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INDEX OF OPENINGS

DEEP SPACE SEVEN
This chapter presents play on the 4 new openings unconditionally approved by the ACF for all postal events:

THE INFERNO
9-13 22-18 10-14

26-22 Attack

Early 24-19 Attack

24-20 Attack

Late 24-19 Attack

Pt-2,25-22 Attack

GEMINI I
10-14 22-17 11-16
Trunk-23-18 Attack

Var-1, 21-17 Attack

GEMINI II
10-15 23-19 11-16

Trunk-21-17 Attack

Var-1-24-20 Attack

BLACK WIDOW
11-16 23-19 16-23
Trunk Game

Var-2-31-26 Defense

Var-3,5-9 Attack

"The Twilight Openings." (See Caytons' Comments P-36)

THE TWILIGHT ZONE
9-13 24-20 11-16

Trunk Game


THE BLACK HOLE
10-14 22-17 9-13
This opening is now regarded as a loss.

Trunk Game


OUTER LIMITS


The 2 following openings must be classified as "Endangered Species."

THE SHARK
11-16 21-17 10-14

Trunk Game

THE CHEETAH
11-16 22-18 10-15


Trunk Game


The Following openings are believed to be untenable.
9-13, 21-17, 10-14..62

9-13, 23-18, 10-14..63-65

9-13, 24-19, 10-15..66

9-13, 24-20, 12-16..67

9-14, 22-18, 12-16..67

9-14, 22-18, 14-17..67

9-14, 24-19, 10-15..68

10-14, 24-19, 11-15..68-9

10-15, 21-17, 9-14..69

10-15, 22-17, 9-14.69-71

10-15, 24-20, 11-16..71-2

11-15, 21-17, 10-14..72-3

11-16, 24-19, 10-15..73

12-16, 23-18, 9-14..74-6

12-16, 23-19, 16-23..76-8
A COMPILATION OF

THE BARRED OPENINGS

by-Dennis C. Cayton

PREFACE

History has been made! In December of 1995, the ACF Executive Committee voted unanimously to tentatively approve four new openings for all postal events:
9-13, 22-18, 10-14; 10-14, 22-17, 11-16; 10-15, 23-19, 11-16 and 11-16, 23-19, 16-23.

Climaxing this event was a majority vote among the ACF postal players to approve these openings unconditionally for all ACF-sanctioned postal events. As a result, these openings have been balloted in the 1997 Inter-District Mail Tournament and in the ACF district mail tournaments this year as well.

History marches on! Earlier this year, the ACF Executive Committee granted tentative approval for another new opening: 12-16, 24-20, 10-15. It is expected that the majority of the ACF postal players will vote affirmatively to approve this opening unconditionally for all official postal events commencing in 1998.

In addition, these new openings were recently presented for a vote among all ACF members for adoption in all crossboard matches and tournaments as well! The results of this vote have not yet been finalised. However, this voting opportunity clearly points to a momentum of growing respectability for our project.

These incredible developments represent the culmination of the dedicated and tireless efforts of a number of persons for whom the highest accolades are warranted.

First, a very special tribute is due to Al Lyman, our dedicated ACFB Editor. Al has undoubtedly been our most generous and prolific contributor of top-level analysis for this project.

As a result of Al's outstanding work, two openings have emerged from the ashes to gain respectability and enjoyment among our postal players. First, his correction of Walter Hellman's analysis on the 9-13, 22-18, 10-14 opening has led to a unanimous consensus that it is sound. Then earlier this year, the 11-16, 23-19, 16-23 opening was in danger of being cast back into the scrap heap, but his fine-tuning of precise move sequences has brought this opening back to life once again.

Al's analytical contributions appear throughout this new edition under a considerable number of openings. We shall forever be indebted to him for his contributions and support.

Next, I thank Brian Hinkle for his incisive and relentless analysis. Brian has served as my "right hand man" for the past several months during my many attempts to unravel the mysteries of the new lines and variations featured in this new edition. His remarkable efforts continue to unearth many new and important findings about these openings. According to Brian: ôCheckers is my way of seeking the truth".

A special tribute is also deserving for Elbert Lowder, who has made a number of fine analytical contributions for our project. His most crowning accomplishment thus far in undoubtedly his superb analysis of the 9-13, 24-20, 11-16 opening, which was believed to be untenable earlier this year. His fine work has brought this opening back to life and it will be submitted to the ACF Executive Committee for tentative approval for all postal events by the end of this year.

Special thanks are also due to Dr. Jonathan Schaeffer, the architect of the awesome Chinook computer program. He has selflessly donated the time for his machine to analyze a great number of settings and variations arising from these openings and he has graciously shared the results with us.

In addition, special thanks are also due to Gil Dodgen, the creator of his excellent computer programs: Checkers 3.0 and his latest version, World Championship Checkers (WCC) . The analytical contributions of these remarkable programs appear throughout this new edition.

Our current knowledge of these openings has been enhanced by a number of analysts and players, both living and deceased. Among the deceased whose contributions grade the pages of this Compilation are John T. Bradford, Ernest Churchill, Jack Cox, John T. Denvir, Eugene Frazier, Walter Hellman, Edwin F. Hunt, Herbert Richter, William F. Ryan, G. H. Snailham and Dr. Marion Tinsley.

Among the living, I acknowledge with special thanks the contributions of Mac Banks, Ben Boland, Jerry Childers, Arnold Cook, Matt T. Long, Carl Marshall, George Miller, Paul Morris, Jerry Lattimer, Bob Podoff, Nigel Proffitt, Carl Reno, Jim Loy, William Schumann, Herschel Smith, Dudley Smithson and Bert Vanderpool.

Finally, special acknowledgments are due for the many others who have provided financial and/or moral support. I thank John Anderson, Leon Creek, Don Deweber, Richard Fortman, Harvey Griffin, Mauro Giusti, James Frank Jones, Leon Kwiatkowski, Bill Lundy, Joseph Malone, Charles Malow, Henderson Marshall, John Meaden, Wayne Miller, Jake Moon, Eddie Moore, Clarence Nuss, Brian Poole, James Randall, George Rizzo, Venice Ryan, John Schmidt, Tom Sheehan, Jim Short, Ronald Sulyma, Keith Weaver, Chris Weiland, Bill Wilkins and Kenneth Wold.

My personal role in this project continues to be one of promotion and organization. My postal ladder, The U.S.S. Starship checkerprise, spawned the idea of the Star Wars Postal Tournament. And with this historic tournament now completing the upcoming Star Wars Postal II Postal Tournament is scheduled for launch during October of this year.

Since the previous edition of this Compilation was completed (August 1996) , the volume of information which has come to my attention in regard to these openings has multiplied almost exponentially. In this new 1997 edition, every effort has been made to include the latest corrections and as many meaningful additions as possible.

The first chapter, titled Deep Space Seven, focuses upon the 5 new openings approved by the ACF for all postal events and 2 other promising openings targeted for future ACF approval; possibly as early as 1998.

Please review this chapter with the highest levels of analytical scrutiny and share with us your findings and recommendations. If you determine that any of the attacks or defenses presented are unsound, please advise us and furnish supporting analysis.

The second chapter, titled The Outer Limits, focuses upon 2 openings which were hopeful of being proven tenable in the previous edition of the Compilation. However, the pages within this chapter appear to present substantial evidence to the contrary.

Nevertheless, we invite all interested analysts and players to give these openings a "second look" in hopes that we may have overlooked something.

The final chapter, titled The Black Hole, focuses upon those openings which we currently suspect are unsound. Some of these openings appear to be absolutely hopeless. But a few of these openings may have a few flickers of hope remaining.

Please review this chapter with a mindset of both discernment and optimism. Perhaps, a new defense to one of these openings can be found, allowing it to rise from the depths of "The Black Hole" and to beam up to "The Next Generation" of the three-move openings. Your analysis and recommendations will be valued most highly.

With the united effort of the entire checker fraternity we hope to achieve our ultimate goal, to complete the three-move deck, before the dawning of the 21st century.

Dennis C. Cayton
October 4, 1997
September 10, 1997
My fellow crew members and checker analysts,

Thanks to the united effort of the entire crew of the Star Wars tournaments, computers and the internet, analytical progress continues toward our goal of "completing the move deck!" The second round of the Star Wars tournament was quite successful; just look at the new discoveries, corrections and improvements to the 1997 compilation! I thank all players who have unselfishly submitted their analysis to our dedicated Captain, Dennis Cayton, to accomplish our goal of completing the 3-move deck. Also, Al Lyman, the editor of the A.C.F., deserves much praise and credit because he has graciously provided much analysis (and space for publication of analysis) in the ACFB and his fantastic home page.

In the next Star Wars round, we need to continue to answer - Are any of these openings drawable or sound? Why or why not? If the crew members give each and every opening a fair investigation, then we will complete the 3-move deck.

Also, we need anyone with a computer to submit analysis where it says in The Compilation needs analysis and submit this to Dennis for publication. Anyone with a Pentium 200 computer (or faster) could help out a lot! Please submit computer analysis!

Additionally, we need players to annotate and edit "The Compilation to the Barred openings" so that all play is presented in a clear, straightforward and teachable manner. Are we explaining why these openings are sound or not? Are there important lines of play missing? Please forward your suggestions and constructive criticism to Dennis Cayton or me to improve the compilation.

The entire Compilation along with an international challenge to correct any play will be posted on the internet (thanks to George Miller) at:
http://Ourworld.compuserve.com/homepages/BDF_Checkers/ 11-16, 23-19 high quality analysis by Al Lyman at:
http://www.primenet.com/#krow/1116.html 9-13 21-17 10-14 analysis/challenge by Jim Loy at: http://www.mcn.net/~jimloy/Ioss.html
Al, George and Jim demonstrate the team spirit needed to complete the 3-move deck of checkers.

I am looking forward to sharing analysis/email and investigating the remaining 3-move openings with all of you in the next round!

Let's complete the 3-move deck of checkers! Brian HinkLe email - hinkle@primary.net Phone (314) 947-3659

INDEX OF OPENINGS

DEEP SPACE SEVEN: PAGES:

9-13, 22-18, 10-14..............................................2-12.... --Go Here
10-14, 22-17, 11-16.............................................13-17....Go Here
10-15, 23-19, 11-16.............................................18-21....Go Here
11-16, 23-19, 16-23............................................22-31....Go Here-Pg-22
12-16, 24-20, 10-15..............."The Black Widow"32-35....Go Here-Pg-32
9-13, 24-20, 11-16................."The Twilight Zone"37-45....Go Here Pg-37
10-14, 22-17, 9-13..."The Black Hole" (opening) 46-50....Go Here Pg-46

THE OUTER LIMITS:
11-16, 21-17, 10-14................................52-54
11-16, 22-18, 10-15................................55-60

THE BLACK HOLE: (Openings that appear to lose)
9-13, 21-17, 10-14.................................62
9-13, 23-18, 10-14.................................63-65
9-13, 24-19, 10-15.................................66
9-13, 24-20, 12-16.................................67
9-14, 22-18, 12-16.................................67
9-14, 22-18, 14-17.................................67
9-14, 24-19, 10-15.................................68
10-14, 24-19, 11-15................................68-69
10-15, 21-17, 9-14..................................69
10-15, 22-17, 9-14..................................69-71
10-15, 24-20, 11-16................................71-72
11-15, 21-17, 10-14................................72-73
11-16, 24-19, 10-15................................73
12-16, 23-18, 9-14..................................74-76
12-16, 23-19, 16-23................................76-78

DEEP SPACE SEVEN
This chapter presents play on the 4 new openings unconditionally approved by the ACF for all postal events:
9-13, 22-18, 10-14 (ACF #4-A)
10-14, 22-17, 11-16 (ACF #45-B)
10-15, 23-19, 11-16 (ACF #79-A)
11-16, 23-19, 16-23 (ACF #121-A)
And one opening which has been tentatively approved by the ACF, with full approval expected during 1998:
12-16, 24-20, 10-15
And two additional openings targeted for future ACF approval:
9-13, 24-20, 11-16
10-14, 22-17, 9-13
-2-

Back to Top---Back to Index

9-13, 22-18, 10-14 (ACF #4-A) Top of Page
OFFICIAL NAME: THE INFERNO

PART I THE 26-22 ATTACK: -(For 25-22 attack-Go Here)

9-13, 22-18, 10-14, 18-9, 5-14, 26-22, 7-10 (A) (B) , 22-18 (C) (D) (E) , 6-9 (F) , 25-22 (Var. I-24-19-Go Here) (var. II-24-20-Go Here) , 1-5, 29-25 (G) , 3-7, 31-26 (Var. III-24-19-Go Here) , 11-15* (H) , 18-11, 8-15, 24-20 (1) , 14-18* (J) , 23-14, 9-18*, 27-24 (K) , 2-6*, 24-19, 15-24, 28-19, 18-23, 22-18, 6-9, 18-15, 10-14, 15-10, 7-11, 10-7, 23-27*, 32-23, 14-17, 21-14, 9-27, 7-3, 27-32* (L) , 26-23, 13-17!*, 23-18, 17-22*, 3-8, 22-29, 8-15, 5-9*, 19-16, 12-19, 15-24, 9-13*, 18-15 (M) , 13-17, 15-11, 32-28, 24-19, 28-32, etc., drawn.


A) Previous editions of the Compilation gave 6-9 first. However, Brian Hinkle has formulated a comprehensive rationale for playing 7-10 first instead.
When this setting was first presented to the experts at the Saint Charles Checker Club, the 7-10 move was recognized as the more natural move and was their overwhelming choice. The 7-10 defense allows Black to develop out of the single-corner and appears to provide more resistance against various secondary attacks. If 6-9 is played first, then white has some promising and unexplored attacks with 23-19, 30-26, and the 22-17 swap.
Another note of significance is that 7-10 here transposes into a new defense from a standard three-move opening: 10-14, 22-18, 7-10, 26-22, 9-13, 18-9, 5-14 same, by Brian Hinkle.

(B) The 1-5?? defense was adopted by John T. Denvir in his Three Move Guide, abandoning his original 6-9 defense as presented earlier in his Guide To Checkers. Eugene Frazier later expanded upon the 1-5?? defense in Checker Player's Delight, commencing with the October 1979 issue, to drawn results.
Brian Hinkle later discovered a win against this defense, which was subsequently improved and published by Eugene Frazier in the November-December 1987 issue of Keystone Checker Review. The trunk line is presented as follows:
After 1-5??: 24-19*, 6-10, 22-17, 13-22, 25-9, 5-14, 29-25, 11-15, 28-24, 15-18, 31-26, 8-11, 21-17, 14-21, 23-14, 10-17, 25-22, 2-6, 22-13, 11-16, 26-22, 16-23, 27-18, 4-8, 24-19, 8-11, 32-27, 11-16, 27-23, 16-20, 19-15, 7-10, 15-11, 10-15, 11-7, 3-10, 18-11, etc. white wins. Start of Game---Index---Top of Page

(C) If 30-26, then 1-5!, 22-17, 13-22, 25-9 (C-1) , 5-14, 29-25, 6-9 transposes into the following line from the Rattlesnake opening: 9-14, 23-19, 10-15, 19-10, 6-15, 26-23, 7-10, 22-18, 15-22, 25-9, 5-14, 29-25, 1-5, 30-26, 5-9 same, by Brian Hinkle.
-3-


(C-1) If 26-17 instead, then 11-15, 25-22, 3-7, 24-20, 8-11, 28-24, 6-9, 17-13, 14-18, 13-6, 2-9, 23-14, 10-26, 31-22, 4-8, etc. drawn, by Checkers 3.0. Start of Game---Index---Top of Page

(D) One reasonable objection against the 7-10 defense is that it allows a further assault upon black's double corner with 22-17, 13-22, 25-9, 6-13, but continue: 24-19 (D-1) , 2-6 (D-2) , 29-25, 6-9, 30-26, 9-14, 27-24, 11-15, 25-22, 8-11, 24-20, 15-24, 28-19, 11-15, 32-28, 15-24, 28-19, 4-8, 22-18, 1-5, 18-9, 5-14, 26-22, 3-7 (D-3) , 22-18, 14-17, 21-14, 10-17, 18-14, 17-22, 14-9, 22-25, 9-6, 25-30, 6-2, and 8-11* forms Robertson's draw, as shown in Boland's Famous Positions, Page 153 - by Brian Hinkle.


(D-1) If 29-25 (D-1a) , then 11-15, 25-22, 8-11, 24-19, 15-24, 28-19, and now the mediocre 1-5? transposes into the trunk line of Game #330 to Eugene Frazier's presentation of this opening in Checker Player's Delight, October 1978, Page 716, to a drawn result. Frazier's run-up is presented as follows: 9-13, 22-18, 10-14, 18-9, 5-14, 26-22, 1-5?? (See Note B on the preceding page) , 22-17?, 13-22, 25-9, 6-13, 29-25, 11-15, 25-22, 8-11, 24-19, 15-24, 28-19, 7-10, same! The fact that black does not have to commit to the 1-5? move in the new run-up suggests that black can survive the best that this attack has to offer, by Brian Hinkle.
Start of Game---Index---Top of Page

(D-1a) A new attack with 24-20 has been tried since going to press, the good news is that 3-7 in reply will draw, thus adding greater credibility to the hypothesis that the ô7-10 defense allows black to develop out of the single corner and appears to provide more resistance against various secondary attacks For the latest update on this attack see the December issue of the ACFB, page 8.

(D-2) Chinook prefers the 11-16 (D-2a) (D-2b) , defense instead, continue: 28-24 (D-2c) , 16-20, 23-18, 3-7, 32-28, 2-6, 19-15, 10-19, 24-15, 1-5, 30-26, 7-10, 29-25, 10-19, 18-14, 8-11, 25-22, 6-9, and Chinook's analysis stopped at 14-10 with no conclusion. One logical continuation noted by the author is as follows: 19-24, 28-19, 11-15, 27-24, 20-27, 31-24, 9-14, 26-23, 13-17, 22-13, 15-18, etc. drawn.

(D-2a) 3-7?? instead runs into the losses shown in Notes E-1 and E-1a.

(D-2b) An interesting note is that both Chinook and Brian Hinkle have avoided the very natural 11-15 instead!

(D-2c) If 29-25, then 8-11, 25-22, 4-8, 22-18, and 3-7 has been confirmed to draw by Chinook. No continuation was available at press time.

(D-3) Forms a transposition available from the 11-15, 22-17, 10-14 opening, continue: 17-10, 7-14, 24-19, 15-24, 28-19, 8-11, 25-22, 6-10, 22-18, 9-13, 18-9, 5-14, 26-22, 11-15, 27-24, 1-5, 30-25, 3-8, 22-18, 15-22, 25-9, 5-14, 24-20, 8-11, 29-25, 4-8, 25-22, 11-15, 32-28, 15-24, 28-19, 2-7 same! As shown by Marion Tinsley to Brian Hinkle.
Start of Game---Index---Top of Page

-4-


(E) If 24-19, then 6-9 (E-1) is now correct to maintain the primary defensive theme, continue 30-26!, 11-15, 19-16, 12-19, 23-16, 15-19, 16-12 (E-2) , 8-11, 27-24, 10-15, 12-8, 3-12, 22-17, 13-22, 26-10, 19-23, 10-7, 15-18, 7-3, 11-15, 24-19, 15-24, 28-19, 9-13, 19-15, 4-8, etc. drawn by Brian Hinkle.

(E-1) If 3-7??, then 22-17!, 13-22, 25-9, 6-13, 29-25, 11-15 (E-1a) , 28-24, 8-11, 25-22, 1-5, 21-17, 5-9, 30-25, 9-14, 25-21, 4-8, 23-18, 14-23, 27-18, etc. white wins, by Checkers 3.0

(E-1a) If 11-16, then 25-22, 8-11, 30-26!, 11-15 (If 16-20, then 19-16, etc. white wins) , 28-24, etc. white wins, by Brian Hinkle.

(E-2) If 27-24 then 10-15, 16-12, 14-18, 31-27, 9-14, 27-23, 18-27, 32-16, 2-7, 24-20 (if 24-19, 15-24, 28-19 then 1-5) , 15-19, 26-23, 19-26, 22-17, 13-22, 25-9, 26-31, etc. to a octane and draw, by Brian Hinkle.
Start of Game---Index---Top of Page

(F) This move marks the continuation of Walter Hellman's defense of this opening, as presented by Eugene Frazier in Checker Player's Delight, October 1978, Page 716, note K.

(G) If 24-19 first, then 3-7, 29-25, etc. runs into Variation III.

(H) Al Lyman's correction of Walter Hellman's 14-17?? exchange, which resulted in a White win. After reviewing Al Lyman's correction and analysis to draw, Brian Hinkle commented: "Al, you have just opened the gates to Checker Hell!"

(I) If 23-18, 14-23, 27-11, 7-16, 24-19 (anything better?) , 16-23, 26-19, then 9-14, 28-24, 4-5*, 32-28, 8-11*, 24-20, 5-9, 30-26, and now either 2-6 or 2-7 should draw, by Al Lyman.

(J) Carl Marshall also discovered and executed this correct defense without prior knowledge against the author in a game contested aboard The Starship Ladder.

(K) If 21-17?, then 4-8* (K-1) , 27-24, 7-11, etc. leaves black with a superior position, by Al Lyman.
Start of Game---Index---Top of Page

(K-1) If 2-6??, then 17-14!, 10-17, 27-24, etc. results in a beautiful white win, by Al Lyman.

(L) Corrects 27-31?? which was given in the 1996 edition of the Compilation. This move is now assessed as a loss, continue: 26-23*, 5-9 (L-1) , 25-22, 31-26 (L-2) (L-3) , 3-8!*, 26-17, 8-15, 17-22 (L-4) , 30-25!!*, 22-29, 23-18!*, 9-14, 18-9, 13-17, 9-6, 17-22, 6-2, 22-26, 15-18* (L-5) , 26-30, 2-7, 30-26, 18-23*, 26-22, 20-16, 29-25, 16-11, 25-30, 7-10, 22-26, 23-27, 26-31, 27-24, 30-26, 11-7, 26-22, 10-14, 31-26, 7-2, 22-25, 2-7, 25-30, 7-11, 26-23, 11-16, 23-26, 16-20, 30-25, 19-15, 25-22, 24-19, 22-25, 15-11, etc. white wins, Gil Dodgen's World Championship Checkers vs. Al Lyman.

(L-1) If 4-8, then 23-18*, 13-17, 25-21, 17-22, 21-17, 31-27, 17-14, 27-23, 3-7, 23-16, 14-10, 5-9, 10-6, 9-13, 6-1, etc. white wins, by Al Lyman.
-5-

(L-2) If 9-14, then 22-18*, 31-27, 18-9, 27-18, 9-6, 18-23, 3-8*, 23-16, 8-15, 16-11, 15-8, 4-11, 6-2, 11-15, 2-7, 15-19, 7-10, 19-24, 10-15, 24-28, 15-18, 13-17, 18-15, 28-32, 15-18, 32-28 (If 32-27, then 30-25 wins) , 18-14, 17-21, 14-18, etc. white wins, by Al Lyman.

(L-3) If 11-15, 19-10, 31-26, then 3-7*, 26-17, 7-11*, 17-22, 11-15*, 9-14, 10-6, 22-26, 23-19, 26-22, 6-1, 22-17, 1-6, 17-22, 20-16, etc. white wins, by Al Lyman.
Start of Game---Index---Top of Page

(L-4) If 17-14, then 20-16*, 13-17, 15-18*, 14-10, 30-26!, 4-8 (L-4a) (L-4b) , 18-22, 17-21, 23-18, 8-11 (L-4c) , 16-7, 10-3, 26-23, 3-7, 18-15, 7-2, 15-11, 2-6, 11-7, 6-10, 7-2, 10-6, 2-7, etc. white wins, by Al Lyman.

(L-4a) If 10-7, then 18-22, 17-21, 23-18, 7-10, 18-15, 10-14 (If 10-6, then 16-11 wins) , 26-23, etc. white wins, by Al Lyman.

(L-4b) If 10-6, then 18-22, 17-21, 23-18, 6-10, 18-15, etc. white wins, by Al Lyman.

(L-4c) If 10-14, then 26-23*, 14-10, 18-15, etc. white wins, by Al Lyman.

(L-5) To prevent the kings from uniting properly into the well-known Skullcracker ending, addressed in Richard Fortman's Basic Checkers, Part 4, Page 36, top. See also Richard Pask's Key Endings.

(M) If 20-16, then 4-8, 24-19, 8-12, 16-11, and 13-17 followed by 17-21, etc. draws, by Al Lyman. Start of Game---Index---Top of Page

-6-


Variation 1: 24-19 (A) , 3-7 (B) , 28-24, 1-5, 25-22, 11-15, 18-11, 8-15, 30-25, 7-11*, 32-28, 2-7! (C) , 22-18, 15-22, 25-18, 14-17, 21-14, 10-17, 18-14, 9-18, 23-14, 17-22, 27-23, 13-17, 23-18, 17-21, 19-15, 12-16, 15-8, 4-11, 24-20, 16-19, 31-27, 19-23, 27-24, 23-27, 24-19, 22-26, 19-15, etc. and white should draw with care, by Al Lyman and George Miller.
Back to Trunk-/Top of Page

(A) An inferior attack which ultimately surrenders the advantage to black. This setting transposes into a variation of the 10-14, 24-19, 7-10 opening, continue: 22-18, 9-13, 18-9, 5-14, 26-22, 6-9, 22-18 same, by A.J. Heffner - Kear's Encyclopedia, Page 314, variation 45, at Move #7.

(B) The more restrictive defense. 11-15, 18-11, 8-24, 28-19, 4-8, instead allows white more scope, continue: 25-22, 8-11, 31-26! (B-1) , 1-5 (B-2) , 22-18, 2-7*, 29-25, 13-17, 25-22, 9-13, 18-9, 5-14, 23-18, 14-23, 21-14, 10-17, 27-18, 11-16, 19-15, 16-19, 18-14, 3-8, 15-10, 7-11, 10-7, 11-16, 7-3, 19-23, 26-19, 16-23, 22-18, 8-11, 3-8, 11-16, 8-11, 16-20, 11-15, 17-22, 14-10, 22-26, 18-14, 26-31, 14-9, etc. drawn, by Al Lyman and George Miller.

(B-1) A new attack which varies from 27-24 as shown in Kear's Encyclopedia.

(B-2) 3-7? instead may be best avoided, continue: 29-25, 1-5, 22-18, 14-17?? (B-2a) , 21-14, 10-17, 19-15*, 7-10, 15-8, 17-22, 26-17, 13-29, 8-3, etc. white wins, W. Wilkins vs. G. Miller, 1997 World Qualifying Round.

(B-2a) 2-6 instead has been rumored to draw, but no play was available at press time.

(C) The best defense and actually forces white upon the defensive, but 4-8 will also draw, continue: 24-20, 15-24, 28-19, 11-15, 19-16, 12-16, 22-17, 13-22, 25-4, 9-13, 31-22, 2-7, 21-17, 14-21, 22-18, 10-14, 18-9, 5-14, 4-8, 7-10, etc. drawn, by Al Lyman and George Miller.
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-7-


Variation II: 24-20 (A) , 11-16 (B) , 20-11, 8-22, 25-18, 4-8, 29-25, 8-11, 25-22 (C) , 1-5, 27-24, 2-7, 31-26, 10-15, 24-19, 15-24, 28-19, 11-16, 32-28, 7-10, 18-15, 16-20, 15-6, 14-17, 21-14, 9-27, 6-1, 27-31, 19-15, 12-16, etc. drawn, P. Morris vs. N. Proffitt, Star Wars Postal Tournament: Final Round.Back to Trunk-/Top of Page

Notes:
(A) Very few legitimate threats have emerged from this attack.

(B) 3-7 (B-1) , 27-24! (B-2) , 11-16 (B-3) , 20-11, 8-22, 25-18, 4-8, 24-19 (B-4) , 8-11, 28-24, 13-17, 24-20 (B-5) , 1-5, 32-28, 17-22, 30-25, 14-17, 21-14, 10-17, 19-15, 17-21, etc. drawn, by Checkers 3.0.

(B-1) This setting forms a transposition from 10-14, 24-20, 7-10, 22-18, 9-13, 18-9, 5-14, 26-22, 6-9, 22-18, 3-7 same, from Ryan's Encyclopedia, Page 198, trunk.

(B-2) A new idea from Nigel Proffitt, 25-22 instead is presented in Ryan's Encyclopedia.

(B-3) An alternate defense with 11-15, 18-11, 8-15 may be at risk, continue: 31-26! (B-3a) , 4-8, 20-16, 12-19, 23-16, 8-12, 32-27, 12-19, 27-23, 1-5, 23-16, 14-17, 21-14, 9-18, 25-22, 18-25, 29-22, 10-14, 24-19, 15-24, 28-19, 2-6, 16-12, 7-11, 12-8, 14-18, 22-15, 11-18, etc. to a result which was unclear at press time, by Brian Hinkle. Analysis is needed.
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(B-3a) A strong attack suggested by Brian Hinkle. If 30-26, then 1-5, 32-27, 4-8, 23-19, 8-11, 19-16, 12-19, 27-23, 14-18, 23-16, 18-22, 25-18, 15-22, 26-17, 13-22, 16-12, 10-15*, 21-17, 9-13, 17-14, 2-6, 12-8, 22-25, 29-22, 15-19, 24-15, 11-25, 8-3, 6-10, etc. drawn, N. Proffitt vs. G. Miller, Star Wars Postal Tournament: Final Round.

(B-4) Varies from 29-25 as played by James Morrison vs. Elbert Lowder in a game transposing from the 10-14, 24-19, 11-16 opening as played in the 40th Natl. Ty. After 29-25, continue: 8-11, 25-22, 11-16, 24-19, 7-11, 30-26, 16-20, 32-27, 11-16, 19-15, 10-19, 22-17, 13-22, 26-10, 19-26, 31-22, 16-19, 18-15, 9-14, 15-11, 2-6, 10-7, 6-10, 7-2, 10-15, 22-17, 14-18, 2-7, 18-22, 7-10, 6-1 drawn, see the October 1997 issue of the ACFB for the complete run up.
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(B-5) 30-26? instead seems to shift the advantage to black, continue: 1-5, 26-22, 17-26, 31-22, 9-13, 18-9, 5-14, 22-18, 14-17, 21-14, 10-17, 19-15, 11-16, 15-10, 7-14, 18-9, 17-22, 23-18, 22-26, 18-15, 16-19, 32-28, 19-23, 15-11, 26-30, 24-19, 23-27, 11-8, 27-32, 9-5, 32-27, 19-15, 2-6, etc. to an eventual draw, B. Hinkle vs. N. Proffitt, Star Wars Postal Tournament: Final Round; black had designs to score with a theme similar to Alfred Jordan's Old Fourteenth line, as shown in Basic Checkers, Part 5, Page 59 - with the intent to "crown more pieces than White", by Brian Hinkle.

(C) If 28-24, then 10-15, 25-22, 12-16, 24-20, 1-5, 27-24, 3-7, 32-28, 16-19, 23-16, 14-23, 24-19, 15-24, 28-19, 9-14, 16-12, 23-27, 31-24, 11-16, etc. drawn, G. Miller vs. N. Proffitt, Star Wars Postal Tournament: Final Round.
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-8-

Variation III: 24-19! is a powerful line originated by Checkers 3.0, continue: 11-15*, 18-11, 8-24, 28-19, 14-17*, 21-14, 10-26, 31-22, 7-10, (A) (B) , 22-18, 9-14*, 18-9, 5-14, 25-22 (C) , 4-8 (D) , 22-18, 14-17, 18-14 (E) , 17-22*, 14-7, 2-11, 19-15, 11-18, 23-14, 8-11*, 14-10, 11-15, 27-24, 15-18* (F) , 24-19 (G) , 18-23, 10-7, 22-26, 7-3, 26-31, 3-7, 31-27, 7-11, 27-24, 19-15, etc. and black can now crown the piece on square #13 and draw, by Al Lyman.Back to Trunk-/Top of Page

Notes:
(A) A new defense originated by Nigel Proffitt and now preferred by many players. The 1996 edition of the Compilation provided the 9-14 defense instead and started it incorrectly. But new perils of this defense have since been revealed. The following analysis is provided: 9-14, 23-18! (A-1) , 14-23, 27-18, 4-8* (A-2) , 19-15, 7-11* (A-3) , 15-10, 11-16, 18-15, 5-9*, 22-18, 13-17, 25-21, 17-22, 21-17, 9-13, 17-14, 16-19, 10-6, 2-9, 14-5, 12-16, 5-1, 22-26, etc. drawn, by Jerry Lattimer.

(A-1) A new attack which further thins the tightrope upon which black now must tread. The 1996 edition of the Compilation presented 25-21 instead, continue: 7-10, 23-18, 14-23, 27-18, 4-8*, 18-15, 10-14, 15-10, 8-11, 30-26, 11-16, 26-23, 13-17, 22-13, 14-18, 23-14, 16-23, 13-9, 23-26, 32-27 (A-1a) , 26-31, 27-24, 31-27, 24-20, 27-24, 10-6, 24-19, 6-1, 19-15, 1-6, 12-16, 20-11, 15-8, etc. to a setting described by Al Lyman as a technical man-down draw, analysis by Chinook.

(A-1a) A subtle twist to this attack. If 10-6 then 26-31, 6-1, 12-16, 1-6, 31-26, 32-27, 16-20, 6-1, 26-30, 27-23, 20-24, 1-6, 24-27, 23-19, 27-31, 6-1, 31-26, 19-16, 26-23, 1-6, 23-26, 6-10, 26-22, 10-15, 30-26, 16-12, 26-31, 15-10, 22-17, 9-6, 2-18, 21-14, etc. drawn, analysis by Chinook.
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(A-2) If 7-10?? then 18-15* (A-2a) , 12-16, 19-12*, 10-19, 32-27, 2-7, 27-23*, 19-26, 30-23, 7-11, 12-8, 11-16, 8-3, 16-20, 23-18, etc. to a winning white ending, B. Vanderpool vs. J Lattimer, Wood's Ladder.

(A-2a) 25-21? instead returns to the draws shown in notes A-1 and A-1a.

(A3) The only move to draw. Other choices are shown to lose below:

(i) 2-6??, 18-14, 12-16, 30-26, 16-19, 32-27, 8-12, 22-18, 13-17, 25-22, 19-23, 26-19, 17-26, 27-23, etc. white wins, by Jerry Lattimer and Bert Vanderpool.

(ii) 7-10??, 15-6, 2-9, 18-14, 9-18, 22-15, 5-9, 15-10, 8-11, 10-6, 11-15, 6-2, etc. white wins, by Jerry Lattimer and Bert Vanderpool.

-9-

(iii) 5-9??, 32-28, 2-6, 25-21, 7-10, 21-17, 10-19, 17-14, 8-11, 14-5, etc. white wins, by Jerry Lattimer and Bert Vanderpool.

(iv) 12-16, 15-11, 8-15, 18-11, 16-20 (7-10 better?) , 11-8, 7-10, 32-27, 2-6, 8-3, 10-15, 27-23, etc. white wins, by Jerry Lattimer and Bert Vanderpool.
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(B) If 4-8??, then 19-15* (B-1) , 12-16, 22-18*, 16-20 (B-2) , 25-21, 7-11, 15-10, 9-14, 18-9, 5-14, 10-7, 11-15, 7-3, 8-12, 3-8, 15-18, 8-11, 18-22, 11-15, etc. white wins, by Al Lyman.

(B-1) Improves and corrects 23-18? as given in the 1996 edition of the Compilation to a drawn result on Page 3 at Note F-1.

(B-2) If 2-6, then 25-22*, 16-20, 30-25, etc. white wins, by Al Lyman.

(C) If 25-21, then 4-8, 32-28, 8-11, 27-24, 11-15, 24-20, 15-24, 28-19, 2-7, 20-16, etc. drawn, N. Proffitt vs. P. Morris, Star Wars Postal Tournament: Final Round.

(D) Or 14-17 first, then 22-18, 4-8*, etc. same.
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(E) If 18-15, then 10-14*, 23-18 (E-1) (E-2) , 14-23, 27-18, 2-7*, 32-28, 7-11*, 15-10, 11-16*, 19-15, 16-19*, 10-7, 12-16*, 7-3, 8-12, 3-7, 19-23, 7-11, 16-20, etc. drawn, by Al Lyman.

(E-1) If 15-10, then 17-22, 19-15, 22-26, 23-19, 26-31, 27-24, 14-18*, 24-20, 18-23, 20-16, 23-26, 30-23, 31-27, 23-18, etc. drawn, by Al Lyman and Nigel Proffitt.

(E-2) If 27-24, then 17-22, 15-11, 8-15, 19-10, etc. and the bridge ending draws with correct play, by Al Lyman.

(F) 12-16?? loses via 24-20, 16-19, etc. as white can crown two kings, by Al Lyman.
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(G) If 32-27 (G-1) , then 12-16*, 10-7, 13-17*, 7-3, 17-21, 3-7, 16-20*, 24-19, 21-25*, etc. and black draws neatly, by Al Lyman.

(G-1) Or 10-7, then 18-23, 7-3, 22-26, 3-7, 26-31, etc. drawn, by Al Lyman.
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-10-

PART Il THE 25-22 ATTACK: Very little published play exists on this attack. Most of the known play can be found in a compilation of analysis by Eugene Frazier, published in Checker Player's Delight, pages 822-824. Some of its key variations are included here. 9-13, 22-18, 10-14, 18-9, 5-14, 25-22 (A) , 11-15 (B) , 30-25 (C) (D) , 6-9* (E) , 22-18 (F) (G) , 15-22, 26-10 (H) , 7-14, 25-22, 8-11, 24 20, 2-7, 29-25, 7-10, 22-18, 10-15* (I) , 25-22, 1-6, 23-19, 15-24, 28-19, 14-23, 27-18, 6-10, 31-26 (J) , 10-14, 26-23, 3-7, 19-15, 12-16, 15-8, 4-11, 18-15, 11-25, 20-2, 25-30, 2-6, 30-26, etc. drawn, by Eugene Frazier.Back to Trunk-/Top of Page

Notes:
(A) The 24-19 attack instead transposes into ACF #18-A: 9-13, 24-19, 10-14, followed by 22-18 and the 6-10, 18-9, 5-14 defense, for an excellent update on this defense by Al Lyman, see the June 1997 issue of the ACFB, page 8.

(B) The only defense treated by Frazier; 6-9?? instead is a probable loss, continue: 22-18 (3-1) , 11-15, 18-11, 8-15, 29-25, 1-5 (is 4-8 better?) , 24-19, 15-24, 28-19, 4-8, 19-15, 2-6, 23-19, 7-10, 27-23, 3-7, 31-27, 14-18, 23-14, 10-17, 21-14, 9-18, 27-24, 18-23, 26-22, 6-9, 25-21, 7-11, 15-10, 9-14, 10-6, etc. white wins, J. Loy vs. B. Vanderpool, 1997 Inter-District Mail Tournament.

(B-1) 22-17, 13-22, 26-10, 7-14, 29-25 results in a setting which is very similar to 9-13, 22-18, 10-14, 18-9, 5-14, 26-22, 7-10, 22-17, 13-22, 25-9, 6-13, 29-25 which was assessed as sound in Note D of PART I. An analytical comparison of these two settings is warranted. (C) If 24-20, then 7-10 (C-1) , 30-25, 8-11, 27-24, 4-8, 24-19, 15-24, 28-19, 11-15, 32-28, 15-24, 28-19, 6-9, 19-16, 12-19, 23-16, 1-5, 26-23, 8-12, 16-11, 10-15, 22-18, 15-22, 25-18, etc. drawn, John T. Denvir vs. John T. Bradford

(C-1) John T. Denvir also suggested 6-10, 30-25, 1-5, etc. to a drawn result.
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(D) Al Lyman has suggested 22-18 as a worthy attack, continue: 15-22, 26-10, 6-15* (D-1) , 29-25, and now 7-10 results in the same setting as 9-13, 22-18, 10-14, 18-9, 5-14, 26-22, 7-10, 22-17, 13-22, 25-9, 6-13, 29-25, 11-15 same. See Note D of PART I for further comments, by Al Lyman.

(D-1) If 7-14?? (D-1a) , then 29-25, 8-11, 25-22, 1-5, 22-18, 6-10, 18-9, 5-14, 23-18, 14-23, 27-18, 2-7, 31-26, 10-15, 26-22, etc. and any draw is doubtful, by Al Lyman.

(D-1a) This move was played to a draw by G. Miller vs. N. Proffitt in the current World Mail Playoffs. Nigel Proffitt has forwarded his analysis, but it is still in the mail. However as the 6-15 capture is more or less forced from the 26-22 run up the 7-14 is unnecessary burden, by George Miller.
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(E) If 8-11??, then 22-18, 15-22, 25-9, 1-5, 26-22, 5-14, 22-18, 6-9, 29-25, etc. white wins, M. Long vs. B. Vanderpool, 1997 Inter-District Mail Tournament.
-11-

(F) If 24-19, 15-24, 28-19, then 7-10, 22-18 (F-1) , 8-11, 25-22 (F-2) , 4-8, 32-28 (F-3) , 11-16, 18-15, 1-5, 15-6, 14-18, 22-15, 13-17, 21-14, 9-18, 23-14, 2-18, 15-11, 16-30, 11-4, 12-16, 28-24, 18-22, 24-20, 16-19, 20-16, 22-26, 31-22, 30-26, 22-18, 26-31, 16-11, 31-24, 18-15, 19-23, 15-10, 24-19, 10-6, 23-26, 6-2, etc. drawn, by Eugene Frazier.

(F-1) If 27-24, then 8-11, 24-20, 11-15, 32-28, 15-24, 28-19, 4-8, 19-16, 12-19, 23-16, 1-5, 26-23, 8-12, 16-11, 10-15, 22-18, 15-22, 25-18, 12-16, 11-8, 3-12, 20-11, 12-16, 11-8, 16-20, 8-3, 20-24, 3-8, 24-28, 8-11, 28-32, 11-15, 32-28, 29-25, 28-24, 25-22, 2-6, 15-11, etc. drawn, John T. Denvir vs. John T. Bradford.
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(F-2) If 26-22, then 2-6, 27-24, 4-8, 31-27, 11-16, 18-15, 14-18, 23-5, 16-23, 27-18, 10-28, 18-14, 8-11, 14-9, 6-10, 9-6, 10-15, 6-2, 12-16, 22-18, 15-22, 25-18, 16-19, 18-14, 19-23, 14-10, 11-15, 2-7, 15-18, 7-11, 18-22, 11-15, 22-26, 29-25, 26-31, 25-22, 23-26, 15-18, 26-30, 22-17, 13-22, 18-25, 31-26, 10-7, 3-10, 25-22, etc. drawn, by Eugene Frazier.

(F-3) If 27-24, then 11-16, 18-15, 14-18, 15-6, 18-27, 32-23, 1-10, 24-20, 8-11, 22-18, 3-7, 29-25, 9-14, 18-9, 11-15, 20-11, 7-16, etc. drawn, by Eugene Frazier.

(G) If 22-27, 13-22, 26-10, 7-14, 25-22, then 3-7, 22-17 (G-1) (G-2) , 7-10, 17-13, 2-7, 13-6, 14-18, 23-14, 10-17, 21-14, 1-17, 27-23 (G-3) , 8-11, 24-19, 15-24, 28-19, 7-10, 23-18, 17-22, 32-27, 11-16, 27-23, 4-8, 18-15, 10-14, 15-10, etc. drawn, by John T. Denvir.

(G-1) If 24-19, 15-24, 28-19, then 9-13 (G-1a) , 22-18, 1-5, 18-9, 5-14, 29-25, 7-10, 25-22, 2-7, 27-24 (G-1b) , 8-11, 22-18, 14-17, 21-14, 10-17, 18-14, 17-22, 14-9, 22-25, etc. drawn, John T. Bradford vs. John T. Denvir.

(G-1a) Eugene Frazier also analyzed 7-10 to draw.
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(G-1b) 22-18, 14-17, 21-14, 10-17, 18-14, 17-22, 19-15, 8-11, 15-8, 4-11, 14-9, 22-25, 9-6, 25-30, 6-2, 30-25, etc. drawn, John T. Bradford vs. John T. Denvir.

(G-2) If 23-19, then 7-10, 27-23, 8-11, 24-20, 15-24, 28-19, 9-13, 29-25, 11-15, 32-28, 15-24, 28-19, 4-8, 31-26, 1-5, 22-18, 8-11, 18-9, 5-14, 19-16, 12-19, 23-7, 2-11, 25-22, 11-15, 26-23, 15-19, 23-16, 10-15, 11-7, 14-18, 22-17, 13-22, 21-17, etc. drawn, John T. Denvir vs. Lee Trigger.

(G-3) If 29-25, then 15-18, 25-21, 17-22, 21-17, 22-25, 17-14, 25-30, 14-9, 30-25, 9-6, 18-22, 24-19, 25-21, etc. drawn, John T. Denvir vs. John T. Bradford.
-12-

(H) If 25-18, then 8-11, 29-25, 7-10, 25-22, 12-16, 24-19, 10-15, 19-10, 16-19, 23-7, 14-30, 28-24, 2-11, 31-26, 30-23, 27-18, 11-16, 21-17, 4-8, 17-14, 1-5, 10-6, 8-11, 14-10, 9-14, 18-9, 5-14, 6-2, 16-20, etc. drawn, John T. Denvir vs. John T. Bradford.
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(I) If 3-8??, then 25-22, 1-6, 28-24, 13-17, 22-13, 10-15, 21-17, 14-21, 18-14, 9-18, 23-14, 15-18, 31-26!* (I-A) , 21-25, 26-23, 18-22, 23-19, 25-30, 32-28, 30-26, 14-9, etc. white wins, by Bert Vanderpool.

(I-A) An important correction from Bert Vanderpool. Instead, 14-9?, 6-10, etc., was given in Checker Player's Delight, page 823, Note R, to a drawn by John T. Bradford vs. J. H. Scott.

(J) If 21-17, then 3-8, 32-28, 11-15, 18-11, 8-24, 28-19, 4-8, 22-18, 13-22, 18-15, 10-14, 20-16, etc. drawn, by Eugene Frazier.

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-13-
10-14, 22-17, 11-16 (ACF #45-B)
PROPOSED NAME: GEMINI ITop of Page

10-14, 22-17, 11-16, 17-10, 6-15, 23-18 (var. I-21-17 Go Here) (A) (B) (C) , 15-22, 25-18, 7-10 (D) , 29-25 (E) , 3-7 (F) , 25-22, 1-6, 27-23 (G) , 16-19* (H) , 24-15, 10-19, 23-16, 12-19, 22-17, 8-11, 31-27, 4-8 (I) , 17-14, 8-12, 27-24, 11-15, 18-11, 9-18, 24-15, 7-16, 15-11, 18-23, 26-19, 16-23, 28-24 (J) , 12-16, 24-19, 16-20, 11-8, 6-10, 8-3, 10-14, 3-8, 2-6, 8-11, 20-24, 11-15, 24-27, 19-16, 6-9, 16-11, 27-31, 11-7, etc. drawn, analysis by Chinook.

(A) The primary attack, once assessed as a white win by Marion Tinsley. Please note that this attack transposes directly into the next opening treated in this Compilation 10-15, 23-19, 11-16, 19-10, 6-15, 22-18, 15-22, 25-18 same. The twin-like properties of these openings form the basis of its suggested names of Gemini-I and Gemini II. Gemini is a constellation of stars in the Northern Hemisphere bearing the nickname: The Twins.

(B) 26-22! is another attack of merit which has received little attention. Please note its transposition into the Gemini II opening: 10-15, 23-19, 11-16, 19-10, 6-15, 26-23 same. This is another illustration of the docility" of the Gemini openings.

The only published line known to the author on this attack is presented as follows: 26-22, 8-11, 30-26, 16-20, 21-17, 1-6, 17-13, 7-10, 25-21, 9-14, 22-18, 15-22, 26-17, 4-8, 24-19, 11-15, 29-25, 15-24, 28-19, 8-11, 25-22, 3-7, 22-18, 11-15, 18-9, 5-14, 32-28, 15-24, 28-19, 7-11, 19-15, 11-18, 23-19, 18-22, 19-15, etc. drawn, by Jerry Childers, Mail Bag Review, Feb. 1, 1973, page 4.
Start of Gemini I

(C) An alternate attack via 23-19, 16-23, 26-19, 7-14, 25-22, etc. results in a perfect transposition into the Grand Canyon attack of the 10-14, 23-19, 11-15 opening, continue: 19-10, 6-15, 22-18, 15-22, 26-10, 7-14, 25-22 same!

(D) 16-20 at this point recently survived a test on Wood's Ladder, continue: 24-19, 8-11, 26-23, 9-14, 18-9, 5-14, 29-25, 7-10, 25-22, 11-15, 30-26, 15-24, 28-19, 4-8, 22-18, 1-5, 18-9, 5-14, 26-22, 2-7, 22-18, 14-17, 21-14, 10-17, 18-14, 17-22, 23-18, 22-25, 14-9, 25-30, 9-6, 30-25 draw agreed, B. Podoff vs. T. Sheehan.

(E) 27-23! was once suggested to win by Ronnie Winton of Scotland, but continue: 3-7, 29-25, 8-11, 24-19, 1-6, 25-22, 4-8, 32-27 (E-1) , 9-14, 18-9, 6-13* (E-2) , 21-17 (E-3) , 2-6, 30-25 (E-4) , 6-9, 25-21, 9-14*, 22-18, 13-22, 26-17, 16-20, 18-9, 5-14, 27-24, 20-27, 31-24, 11-16, 24-20, 8-11, 19-15, 11-27, 20-2, 14-18, 2-6, 10-15, 6-10, 27-31, 10-19, 18-23, etc. drawn, by Al Lyman.
Start of Gemini I

-14-

(E-1) If 22-17, then 9-14, 18-9, 5-14*, 26-22, 16-20, 30-26, 11-15, 32-27, 15-24, 28-19, 8-11, 22-18, 11-16, 18-9, 6-22, 26-17, 2-6, 17-13, etc. drawn, L. Stubblefield vs. A. Lyman, 1996 Inter-District Mail Tournament.

(E-2) Suggested by Brian Hinkle, Ronnie Winton continued with 5-14??, 22-18, 14-17, 21-14, 10-17, 18-14, 6-10, - 14-9, 17-21, 9-5, 10-14, 19-15, 11-18, 5-1, etc. white wins.

(E-3) If 30-25, then 10-14, 22-18, 7-10, 18-9, 5-14, 25-22, 2-7, 22-28, 14-17, 21-14, 10-17, 18-14, 17-22, 26-17, 13-22, 19-15, 11-18, 14-9, 16-19, 23-14, 7-11, 9-6, 11-15, 6-2, 15-18, 2-7, 19-23, 27-24, 23-26, 24-19, 26-30, 19-15, 12-16!, 14-9 (E-3a) , 18-23, 15-10, 16-20, 10-6, 23-27, etc. drawn, by Al Lyman.

(E-3a) If 7-11, then 18-23 and 30-25 following either jump draws, by Al Lyman.
Start of Gemini I

(E-4) If 22-18, 13-22, 26-17, then 6-9*, 28-24, 16-20!, 17-13, 9-14, 18-9, 5-14, 30-26, 14-18, 23-14, 10-17, etc. drawn, by Al Lyman.

(F) In contrast to Note D, 16-20?? at this point seems to lose, continue: 18-15, 10-19, 24-15, 1-6, 25-22, 8-11 (F-1) , 15-8, 4-11, 26-23, 6-10, 23-18, 10-15, 30-26, 3-7, 26-23, 7-10, 28-24, 2-6, 21-17, 9-13, 18-14, 11-16, 14-7, 16-19, 23-16, 12-28, 7-3, 15-18, 22-15, 13-22, 3-7, 22-25, 7-10, 6-9, 15-11, 25-29, 11-7, 29-25, 7-2, 25-21, 2-6, 9-14, 10-17, 21-14, 27-23, 14-17, 23-18, etc. white wins, M. Banks vs. D. Cayton, The Starship Ladder.

(F-1) If 3-7, then 26-23, 12-16, 23-18, 9-14, 18-9, 5-14, 22-17, 14-18, 17-14, 16-19, 21-17, 18-22, 17-13, 7-10, 14-7, 2-18, 27-24, 20-27, 32-16, 18-23, 28-24, 23-27, 16-12, 8-11, 12-8, 27-32, 8-3, 11-16, 3-7, 4-8, 7-3, etc. white wins, M. Long vs. B. Hinkle, Star Wars Postal Tournament: Round I.

(G) 24-20 is an alternate attack originated by Matt Long, continue: 9-14 (G-1) , 18-9, 5-14, 20-11, 8-15, 22-17, 4-8, 28-24, 8-11, 26-23, 11-16, 24-20, 15-19, 20-11, 19-26, 30-23, 7-16, 23-18, 14-23, 27-18, 16-19, 17-13, 6-9, 13-6, 2-9, 21-17, 9-13, 18-15, 13-22, 15-6, etc. drawn, analysis by Chinook.
Start of Gemini I

(G-1) 10-14 also seems to draw, continue: 20-11, 14-23, 27-18, 8-15, 18-11, 7-16, 28-24, 4-8, 26-23 (G-1a) , 16-20, 24-19, 8-11, 32-27, 11-16, 31-26, 9-14, 22-18, 5-9, 26-22, 6-10, etc. drawn, analysis by Chinook.

(G-1a) Or 22-18, 6-10, 26-23, 8-11, 24-19, 16-20, 30-26, 11-16, 31-27, 9-13, 26-22, 2-6, 18-15, 10-14, 22-18, etc. drawn, B. Hinkle vs. M. Long, Star Wars Postal Tournament: Round I
-15-

(H) This move was first suggested by Percy Crabbe in the August 1940 issue of The New Draughts Review. Previous attempts to prove this opening as an absolute loss with 8-11?? instead were presented in the June and July 1940 issues. After 8-11??, continue: 24-19, 4-8, 32-27, 9-14, 18-9, 5-14, 22-18, 16-20, 18-9, 6-13, 21-17, 13-22, 26-17, 11-16, 30-26, 2-6, 26-22, 6-9, 17-13, 9-14, 13-9, 14-17, 22-13, 7-11, 9-6, 10-14, 19-15, 11-18, 6-2, 18-22, 2-6, 14-17 (H-1) , 13-9, 17-21, 6-10, 21-25, 10-15, 25-30, 9-6, 22-26, 31-22, 30-26, 23-18, 26-17, 6-2, 17-22, 18-14, 22-26, 14-10, 26-31, 15-18, 31-24, 28-19, 16-23, 18-27, etc. white wins, by G. H. Snailham.
Start of Gemini I

(H-1) If 8-11, then 6-9, 14-17, 9-14, 11-15, 14-21, 15-19, 13-9, 19-26, 9-6, 26-30, 6-2, 22-25, 2-6, 25-29, 6-9, 29-25, 9-14, 25-22, 28-24, 22-17 (H-1a) , 14-18, 17-13, 18-23, 13-9, 31-26, 9-14, 26-22, 14-10, 22-18, 10-7, 21-17, 30-25, 18-14, 7-11, 23-18, etc. white wins, by G. H. Snailham.

(H-1a) If 22-25, then 14-18, 25-29, 18-23, 29-25, 21-17, 25-29, 17-22, 30-25, 31-26, 25-18, 23-14, 29-25, 14-18, 25-30, 18-23, etc. white wins, by G. H. Snailham.

(I) Percy Crabbe's analysis continued with 9-13, 17-14, 11-15 (1-A) , 18-11, 7-16, 27-24 (1-B) , 4-8, 24-15, 6-10, 15-6, 2-18, 28-24, 8-11, 32-27, 18-22, 26-17, 13-22, 21-17, 11-15, 27-23, etc. drawn, The New Draughts Review, August 1940, page 317.

(I-A) If 6-9, then 27-24, 11-15, 18-11, 9-18, 24-15, 7-16, 26-23, 18-27, 32-23, 2-7, 15-11, 7-10, 11-7, 10-15, 7-2, etc. drawn, analysis by Chinook.
Start of Gemini I

(I-B) Neither 26-22 nor 27-23 pose a significant threat for black, by Brian Hinkle.

(J) If 11-8 then 6-10, 21-17, 5-9, 17-13, 10-14, 13-6, 2-9, etc. drawn, analysis by Chinook. Start of Gemini I

Variation 1: 21-17 (A) , 7-10, 25-22, 3-7 (B) , 17-13, 9-14 (C) , 29-25 (D) , 16-19, 23-16, 12-19, 25-21, 1-6 (E) , 22-17, 8-11 (F) , 24-20, 4-8, 27-24, 14-18* (G) , 26-23, 19-26 (H) , 30-14, 8-12* (I) , 31-27, 15-18, 24-19 (K) , 11-15, 28-24, 18-22, 27-23, 22-25, 32-28, 6-9, 13-6, 2-27, 17-14, etc. drawn, by Herbert Richter. See Midwest Checkers, June 1988, pages 658-659.Back to Trunk

Notes:
(A) If 24-19, 15-24, 28-19, then 7-10, 25-22, 8-11, 22-18, 3-7, 29-25, 9-14, 18-9, 5-14, 25-22, 11-15, 22-18, 15-22, 26-17, 7-11, 17-13, 16-20, 30-26, 2-7, 26-22, 14-17, 21-14, 10-26, 31-22, 7-10, 23-18, 11-16, 18-15, 16-23, 15-6, 1-10, 27-18, 20-24, 13-9, 10-14, 18-15, 14-18, 22-17, 18-23, etc. drawn, analysis by a Chinook " clone " - submitted by Herschel Smith.
-16-

(B) Brian Hinkle has recently suggested that 9-14 be played first, forcing 17-13, and continuing with 16-19, 23-16, 12-19, and into a new defensive line. Analysis is needed!

(C) If 1-6??, then 24-19, etc. was suggested to win by Brian Hinkle in Midwest Checkers, August 1987, page 581.

(D) 24-19!, 15-24, 28-19 is a powerful attack originated by Mac Banks, continue: 8-11, 22-18, 4-8?? (D-1) , 18-9, 5-14, 26-22, 16-20, 29-25, 14-17, 23-18, 17-26, 30-23, 1-5, 25-22, 5-9, 13-6, 2-9, 27-24, 20-27, 31-24, 11-16, 24-20, 8-11, 22-17, 9-13, 17-14, 10-17, 19-15, 17-22, 15-8, 7-11, 8-3, 22-26, 32-28, etc. white wins, D. Cayton vs. M. Banks, The Starship Ladder.
Start of Gemini I-Var-1

(D-1) Loses, but 1-6*, 18-9, 5-14 has been suggested to draw by Brian Hinkle, with one continuation being 26-22, 11-15, 29-25, 15-24, 27-11, 7-16, 22-18, 6-9, 13-6, 2-9, etc. to a drawn result.

(E) A transposition has now been reached with the 9-14, 22-18, 10-15 opening, continue: 18-9, 5-14, 25-22, 7-10, 29-25, 3-7, 22-17, 11-16, 25-22, 16-19, 23-16, 12-19, 17-13, 1-5 same, by Brian Hinkle.

(F) If 8-12??, then the 26-23 exchange wins for white, by Brian Hinkle.
Start of Gemini I-Var-1

(G) If 8-12??, then 31-27* wins, by Marion Tinsley and corrects Everett Fuller's 32-27? to draw, as shown in ACFB #131, page 26, Variation 3, Note B, at the 13th move. After 31-27* continue: 14-18 (G-1) , 27-23, 18-27, 32-16, 12-19, 26-23, 19-26, 30-23, 15-18, 23-14, 6-9, 13-6, 2-18, 24-19, 18-23, 19-16, 23-26, 16-12, 26-31, 12-8, 31-26, 8-3, 26-23, 3-8, 11-15, 20-16, etc. white wins, analysis by Marion Tinsley.

(G-1) If 11-16, 20-11, 7-16, then 27-23, 2-7, 24-20, 7-11, 26-22, etc. white wins, by Marion Tinsley.

(H) Corrects the 18-27?? jump, as shown to lose in Midwest Checkers, August 1987, page 581. After 18-27?? continue: 32-16, 8-12, 31-26, 12-19, 26-23, 19-26, 30-23, 15-18, (If 5-9, then 23-19, 9-14, 19-16, etc. white wins) , 23-14, 6-9 (If 11-15, then 24-19, 15-24, 28-19, 6-9, 13-6, 2-18, 17-14, etc. white wins) , 13-6, 2-18, 24-19, 18-23, 19-16, 15-18, 16-12, etc. white wins, by Brian Hinkle.
Start of Gemini I-Var-1

(I) An essential waiting move, all other moves lose. If 15-19 (1-A) , then 24-15, 11-18, 20-16, 8-11, 16-12, 18-22, 12-8, 22-26, 31-22, 6-9, 13-6, 2-25, 8-3, etc. white wins, by Brian Hinkle.
-17-

(I-A) If 15-18 (1-B) , then 24-19, 18-22, 20-16, 11-20, 19-15, 10-19, 14-9, 5-14, 17-3, 8-12, 32-27, etc. white wins, by Brian Hinkle.

(I-B) If 6-9, 13-6, 2-18, then 31-26*, etc. white wins, by Brian Hinkle.

(J) 32-27 instead transposes into Game #487 of the 7th American Tourney between Nathan Rubin and Asa Long: 11-16, 24-20, 16-19, 23-16, 12-19, 22-18, 9-14, 18-9, 5-14, 25-22, 8-12, 22-17, 4-8, 17-13, 8-11, 29-25, 10-15, 27-24, 7-10, 32-27, 1-5, 25-22, 14-18, 22-17, 3-7, 26-23, 19-26, 30-14 same, continue: 12-16 (Rubin played 6-9?, etc. and lost, although a draw was later missed) , 14-9, 5-14, 27-23, 15-18, 24-19, etc. to a draw, 7th American Tourney Book, page 202, Note D.

(K) Or 20-16, 11-20, 24-19, 18-22, 19-15, 10-19, 27-24, 20-27, 32-16, 12-19, 14-9, etc. drawn, by Brian Hinkle.
Start of Gemini I-Var-1-/Top of Page-/Index

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10-15, 23-19, 11-16 (ACF #79A) Top of Page
PROPOSED NAME: GEMINI II

10-15, 23-19, 11-16, 19-10, 6-15, 21-17 (var. 1) (A) (B) (C) , 7-10, 17-13, 9-14, 25-21 (D) (E) , 16-20, 29-25, 8-11, 22-17, 3-7* (F) , 26-23, 11-16* (G) , 25-22, 7-11* (H) , 24-19, 15-24, 28-19, 11-15, 32-28, 15-24, 28-19, 4-8, 13-9, 8-11, 22-18, 11-15, 18-11, 1-6, 17-13, 14-18, 23-7, 16-32, 7-3, 5-14, 3-8, 6-9, etc. drawn, by Al Lyman.

(A) 22-18, 15-22, 25-18 transposes into the primary attack featured in the section on the Gemini I opening: 10-14, 22-17, 11-16, 17-10, 6-15, 23-18, 15-22, 25-18 same.

(B) And 26-23 transposes into 10-14, 22-17, 11-16, 17-10, 6-15, 26-22 same. See Note B under the section on this opening for a published line by Jerry Childers.

(C) 24-19, 15-24, 27-11, 8-15, 32-27 (C-1) , 4-8, 27-23, 8-11, 22-18, 15-22, 25-18, 7-10, 29-25, 11-16, 25-22, 1-6, 22-17, 9-14, 18-9, 6-22, 26-17, 16-19, 23-16, 12-19, 17-14, 10-17, 21-14, 3-7, 30-26, 2-6, 31-27, 6-9, 27-24, 9-18, 24-15, 5-9, etc. drawn, by Jerry Childers; Mail Bag Review, Feb. 1, 1973.
Start of Gemini II-/Top of Page

(C-1) 21-17, 7-10 (C-1a) , 17-13, 9-14, 28-24, 12-16, 24-20, 16-19 (C-1b) , 20-16, 1-6, 25-21, 19-24, 22-17, 14-18, 29-25? (C-1c) , 24-28, 26-22, 18-23, 16-11, 15-18, 22-15, 10-19, 25-22, 3-7, 31-27, 7-16, 27-18, 19-23, 17-14, 6-10, 14-7, 2-11, 18-14, 16-19, 14-10, 11-16, 10-7, 23-26, etc. drawn, by Jerry Childers; Mail Bag Review, Feb.1, 1973.
Start of Gemini II-/Top of Page>-/Index

(C-1a) Instead, 4-8! by Matt Long in the Star Wars II Postal Tournament appears to neutralize this attack more effectively.

(C-1b) Checkers 3.0 prefers the 3-7 exchange to draw.

(C-1c) Instead, 16-11!* wins for white, by Brian Hinkle.
Start of Gemini II-/Top of Page

(D) A transposition has now been reached with the 22-17 attack from the Rattlesnake opening: 9-14, 23-19, 10-15, 19-10, 6-15, 22-17, 7-10, 25-22, 11-16, 17-13 same, by Brian Hinkle.

(E) If 24-20, then 16-19, 25-21, 3-7, 27-24, 8-11, etc. runs into Variation 1.

(F) Corrects both 4-8?? and 11-16??, which were shown to lose in the 1993 Inter-District Mail Play Booklet, page 26.

(G) If 1-6??, then 23-19* (G-1) , 11-16, 25-22, 16-23, 27-11* (G-2) , 20-27 (G-3) , 31-24, 7-16, 24-20, 16-19, 32-27*, 4-8, 27-24*, 14-18, 22-15, 19-23, 30-25, 10-19, 24-15, 23-27, 25-22, 27-31, 28-24, 31-26, 24-19, 26-30, 20-16, 30-26, 16-11, 26-23, 11-4, 23-16, 22-18*, 6-9 (G-4) , 13-6, 2-9, 4-8, 9-13, 17-14, 16-19, 15-10, etc. white wins, by Al Lyman.

(G-1) Corrects both 25-22? and 30-26? to draw, as shown in Midwest Checkers, page 531.
Start of Gemini II-/Top of Page>-/Index

(G-2) Corrects 27-9? to draw, as shown in the 1992 Inter District Mail Play Booklet, page 22.
-19-

(G-3) If 7-16, then 32-27*, 4-8, 30-26, etc. white wins, by Al Lyman.

(G-4) If 16-19, then 18-14*, 19-10, 14-7, 2-11, 4-8, etc. white wins, by Al Lyman.

(H) If 16-19??, 23-16, 12-19, then 22-18*, 15-22, 24-6, 1-10, 13-9*, 14-18, 17-14*, etc. white wins, by Al Lyman.

(I) If 31-26, then 4-8, 23-18, 14-23, 27-18, 20-27, 32-23, 2-6, 18-14, 15-18, 14-7, 18-27, 7-2, etc. drawn, T. Sheehan vs. L. Balderson, 1996 Inter-District Mail Tournament.
Start of Gemini II-/Top of Page>-/Index

Variation I: 24-20, 16-19, 27-24, 9-14, 22-17, 7-10, 25-22, 3-7, 17-13, 8-11? (A) , 22-17 (B) , 1-6 (C) , 32-27, 14-18, 17-14, 10-17, 21-14, 4-8 (D) , 30-25 (E) , 6-9, 13-6, 2-9, 26-22, 19-23, 22-17, 23-32, 17-13, 7-10* (F) , 14-7, 9-14, 7-2, 14-17, 25-21, 17-22, 24-19 (G) , 15-24, 28-19, 32-28* (H) , 2-7, 28-24, 7-16, 24-15, 16-11, 15-10, 11-4, 10-15, 4-8 (1) , 22-25, 29-22, 18-25, 8-3, 15-11, 31-26, 25-30, 26-22, 30-25, 22-17, 25-22, 17-14, 11-15, 3-7 (If 3-8, then 22-25, 21-17, 25-22, etc. drawn) , 22-17, 14-10, 15-6, 21-14, 6-10, 7-11, 10-17, 11-15, 17-14, 13-9 (If 20-16, 12-19, 15-24, then 14-10, etc. drawn) , 14-18, 15-22, 5-14, etc. drawn, by Eugene Frazier; from Checker Player's Delight, September 1978, page 704, note N.
Back to Trunk

Notes:
(A) An important setting which has been reached in many important games from the Rattlesnake opening, including Game #3 of the Sixth World Title Mail Match between Richard Fortman and the author as well as in a number of games contested in the 1993 and 1994 Inter-District Mail Tournaments. Following is one transposition: 9-14, 23-19, 10-15, 19-10, 6-15, 22-17, 7-10, 25-22, 11-16, 17-13, 8-11, 24-20, 16-19, 27-24, 3-7 same.

Note: Instead of 8-11 here, Brian Hinkle has recommends that black play 1-6 first, in order to avoid the improvements emanating from the trouble-corner snake breakoff shown in note B via 21-17!.

(B) If 21-17!, 14-21, 22-18, 15-22, 24-6, 1-10, 26-17, then 11-15, 29-25, 15-18* (B-1) , 32-27, 7-11, 31-26 (B-2) , 10-15, 17-14 (B-3) , 15-19, 13-9, 11-15*, 20-16, 19-23!*, 26-10, 12-19, 10-6, etc. drawn, analysis by Tom Sheehan, shown in the 1994 Inter-District Mail Play Booklet, page 28, note D-1.

(B-1) If 12-16??, then 20-11, 7-16, 28-24, 16-20, 25-22*, 20-27, 32-23, 4-8, 31-27, 8-11, 27-24, 2-6, 23-18, 21-25, 30-21, 5-9, 24-20, 15-19, 20-16*, 11-20, 18-15, 9-14, 15-11, 14-18, 22-15, 19-23, 11-8, 10-19, 17-14, 23-26, 8-3, 26-30, 3-8, 30-26, 8-11, etc. white wins, T. Sheehan vs. B. Vanderpool, 1994 Inter-District Mail Tournament.
Back to Gemini II-Var-1-/Top of Page>-/Index

(B-2) A promising attack is 27-23!, 18-27, 31-24. The black piece stranded on square #21 offers white some potentially winning endings, by Brian Hinkle.

(B-3) 2-23! instead has been suggested by Tom Sheehan, continue: 18-22, 25-18, 15-22, 17-14, 22-25, 14-10, 25-29, 10-6, 2-9, 13-6, 29-25, 6-2, 25-22, 2-6, 22-17, 27-24, 17-14, 6-9, 14-17 (B-3a) , 9-13, 17-22, 24-19, 22-26 and white is very powerful, by WCC and Tom Sheehan.

(B-3a) If black plays 14-10 instead the white position is a probable win, by WCC and Tom Sheehan.
-20-

(C) The immediate 14-18 was played by Richard Fortman vs. the author in Game #3 of their WCM. Refer to the 1992 edition of the Checkers annual, page 153 for the continuation and annotations.
Back to Gemini II-Var-1-/Top of Page>-/Index

An alternate continuation with 14-18 was given by J. Alexander in the August 1932 issue of the Indiana Checker Bulletin: 14-18, 17-14, 10-17, 21-14, 4-8 (C-1) , 32-27, 2-6? (C-2) , 30-25, 6-10, 25-21, 10-17, 21-14, 1-6, 26-22 (C-3) , 18-25, 29-22, 6-10, 22-17, 19-23, 27-18, 15-22, 13-9, 22-25, 9-6, 25-30, 6-2, 30-25, 20-16!, 12-19, 24-6, 25-22, 17-13, 22-17, 6-1, 17-10, 28-24, 10-15, 1-6, 8-12 and 31-26? (C-4) , etc. to a draw.

(C-1) Richard Fortman played 1-6 instead vs. the author in their WCM.

(C-2) There is some uncertainty in regard to the final outcome of this move. Instead, 1-6 is recommended as it returns to the Variation 1 trunk line play.

(C-3) If 13-9!, 6-13, 26-22 (an attack suggested by Brian Hinkle) , 18-25, 29-22, then 15-18, 22-15, 11-18, 24-15, 18-22, 15-10, 7-11, 10-6, 22-25, 6-2, 25-30, etc. is suggested to draw, by Al Lyman.

(C-4) However, instead of 31-26?, etc., the following solution to win was later submitted by Rex B. Wood: 13-9*, 5-14, 6-10, 15-6, 2-18, 7-10* ( both 11-16 and 12-16 lose by 24-19) , 24-20, 12-16, 18-23, 10-15, 31-26!, 15-19, 23-18!, 19-24, 26-23!, 24-27, 18-14, 27-32, 23-18!, etc. white wins. Can a sound Black defense be found to avoid this loss and sustain J. Alexander's 2-6 defense?
Back to Gemini II-Var-1-/Top of Page>-/Index

(D) A transposition has now been reached from a 10-15, 23-18, 9-14 game between Elbert Lowder (Black) vs. Marion Tinsley (White) , played in the 39th National Tournament: 10-15, 23-18, 9-14, 18-9, 5-14, 22-17, 7-10, 24-20, 15-19, 27-24, 11-15, 25-22, 8-11, 17-13, 4-8, 22-17, 3-7, 32-27, 14-18, 17-14, 10-17, 21-14, 1-5 same. See ACFB *261, June 1996, page 113, Trunk. (E) It was at this point that J. Alexander stated that black was in a loss in the August 1932 issue of the Indiana Checker Bulletin.

(F) A fine innovation by Brian Hinkle to improve 32-27?, as played by Ed Scheidt vs. Marion Tinsley to a losing cause in the 1970 Southern Tourney. See Checkers The Tinsley Way, page 95.
Back to Gemini II-Var-1-/Top of Page>-/Index
-21-

(G) Marion Tinsley played 21-17 instead against Elbert Lowder in the game mentioned in note D.

(H) Corrects 18-23?? by Brian Hinkle, which was shown in Midwest Checkers, page 531, variation 2. After 18-23??, continue: 2-7, 23-26, 7-16, 26-30, 21-17, 30-26, 29-25, 22-29, 31-22, 29-25, 22-18, 25-22, 18-15, 32-27, 17-14, 27-24, 14-10, 22-18, 10-6, 18-11, 7-16, 24-15, 7-10, 15-19 and now 6-1!*, 8-11, 10-14!*, etc. white wins, by J. Merrick and B. Boland to correct 6-2?, etc. to a draw.

(I) If 21-17, then 22-25, 29-22, 18-25, 17-14, 25-30, 4-8 (if 13-9, then 15-19, etc., draws) , 30-25, etc. drawn, by Eugene Frazier.
Back to Gemini II-Var-1-/Top of Page>-/Index

-22-

11-16, 23-19, 16-23 (ACF #121-A)Top of Page
PROPOSED NAME: THE BLACK WIDOW

This opening was one of the four original Barred Openings of the two move era and was eliminated from the original roster of the 150 three-move openings presented in 1931. Highly suspected to be untenable since that time, this opening was concluded to be a loss by Walter Hellman and Herbert Richter in the June 1988 issue of Midwest Checkers. However, a remarkable defensive innovation discovered by the incredible Chinook computer has resurrected this opening!

11-16, 23-19, 16-23, 26-19* (A) , 8-11 (Var. I-9-14 line) , 27-23* (B) , 11-15 (C) , 22-18* (D) , 15-22, 25-18, 9-13 (E) , 29-25*, 13-17, 21-14, 10-17, 18-15 (Var. II-31-26 line) (F) , 4-8! (Var. III-5-9 line) (G) (H) , 24-20 (I) (J) , 6-9! (K) , 31-26* (L) (M) , 17-21 (N) , 25-22* (O) (P) , 9-13, 32-27 (Q) , 7-11! (R) , 15-10* (S) , 2-7, 22-18*, 7-14, 18-9, 5-14, 19-16, 12-19, 23-7, 3-10, 20-16, 8-12, 16-11, 14-18, 11-7, 18-22, 26-17, 13-22, 7-2, 10-14, 2-7, 12-16, 7-10, 14-17, 10-15, 22-25, 27-23, 25-29, 15-19, 16-20, 19-15, 29-25, 23-18, 25-22, 18-14, etc. a man-down draw!, by Al Lyman.

(A) The 27-18 jump, followed by 12-16, transposes into 12-16, 23-19, 16-23, 27-18, 11-16 same. This opening is treated in The Black Hole chapter of this Compilation.

(B) If 22-18??, then white's formation soon self-destructs with correct play commencing with 11-16*, see Midwest Checkers, April 1980, page 21, Variation 1 for detailed play.

(C) 4-8 instead was originally believed to win by Walter Hellman, until later corrected by Herbert Richter. See Midwest Checkers, April 1980, pages 20-21.

(D) Detailed play to defeat 30-26?? was shown in Midwest Checkers, June 1980, page 88.
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(E) If 7-11, then 30-26, 11-16 (E-1) , 29-25, 10-14, 25-22, 4-8, 32-27 (E-2) , 16-20, 19-15, 9-13, 18-9, 5-14, 22-17, 13-22, 26-10, 2-7, 24-19, 7-14, 27-24, etc. drawn, by Walter Hellman.

(E-1) An unpublished attack is 9-14, 18-9, 5-14, continue: 29-25* (E-1a) , 11-15, 25-22, 4-8, 24-20, 15-24, 28-19, 6-9, 22-18, 8-11, 26-22, etc. to a drawish formation, by Paul Morris and Checkers 3.0.

(E-1a) If 24-20??, then 2-7, 32-27, 4-8, 26-22, 6-9, 22-18, 12-16!, 19-12, 10-15, 21-17, 14-21, 18-14, 9-18, 23-14, 15-18, 27-24, 11-15, 31-26, 8-11, 24-19, 15-24, 28-19, 18-23, 26-22, 23-26, 22-17, 26-31, etc. black wins, P. Morris vs. B. Vanderpool, Star Wars Postal Tournament: Round 1.
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(E-2) Bert Vanderpool has pointed out an alternate draw with 31-27 instead, continue: 16-20, 19-16, 12-19, 24-15, 8-11, 15-8, 3-12, 28-24, 6-10, 24-19, 1-6, 32-28, 2-7, 28-24, 7-11, 22-17, 9-13, 18-2, 13-31, 2-6, 11-15, 23-18, 15-22, 6-15 and Black does not have the "move" to win!
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(F) Chinook's bold and new defensive innovation. Walter Hellman focused upon 31-26 instead, which is treated in Variation II.

(G) A new and powerful attack which, when combined with 6-9! at the next move, was recently thought to knock out the Chinook 18-15 defense and the entire opening. Instead, 5-9 followed by 24-20, 4-8, 28-24, 9-13, 31-26, 17-21, 25-22, 6-9 and 32-28 forms the essential Compilation Landing, described by Al Lyman in the August 1997 issue of the ACFB and which will referred to throughout the remainder of this section. A detailed treatment of this line is presented in Variation III.

(H) If 7-10, then 24-20 (Checkers 3.0 prefers 31-26 instead) , 4-8, 28-24, 3-7, 31-27, 6-9, 13-6, 1-10, 32-28, 10-14, 19-15, 2-6, 24-19, 7-11, etc. drawn, B. Vanderpool vs. D. Cayton, Star Wars Postal Tournament: Round 1.
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(I) 31-26 also seems to draw, continue: 5-9 (1-A) (I-B) , 24-20* (1-C) , 9-14 (I-D) , 28-24*, 7-10, 20-16*, 8-11!, 15-8, 10-15, 19-10, 12-28, 8-4, 6-15, 25-22, 17-21?? (now consigned to the scrap heap as 2-6, 22-13, 14-17, etc. is one way for black to win, by Brian Hinkle) , 23-18*, 14-23, 26-10, 2-6, 4-8!*, 3-12, 10-7, etc. to a man-down draw!, by Al Lyman.

(I-A) If 17-21, then 24-20, 6-9, 25-22*, etc. leads back into the trunk line.

(I-B) If 6-9, then 25-22*, 9-13, 24-20, 5-9 (1-Ba) , 28-24, 17-21, and 32-28 results in the Compilation Landing described in note G above.

(I-Ba) If 7-11, then 15-10*, 2-7, 30-25*, 7-14, 25-21, 1-6, 22-18, 5-9, 32-27, 12-16, 19-12, 6-10, 23-19, etc. drawn, by Al Lyman.
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(I-C) If 25-22?? then 17-21! will win, by Al Lyman.

(I-D) If 9-13, then 28-24, 17-21, 25-22, 6-9 and 32-28 achieves the Compilation Landing described above in note G.

(J) Al Lyman has analyzed 32-27?? as a loss, continue: 5-9*, 31-26 (J-1) , 17-21, 25-22, 9-13*, 24-20, 7-11! (J-2) , 22-18, 1-5*, 19-16 (J-3) , 12-19, 23-7, 3-19, 18-15 (J-4) , 5-9*, 20-16, 8-12, 16-11, 9-14, 11-8, 14-18, 15-11, 18-22, 26-17, 13-22, 8-3, 6-10!*, 3-7, 10-14, 7-10, 14-18, 27-24, 19-23, 10-15 (J-5) , 23-27, 24-20 (J-6) , 27-31!*, 30-26, 22-25!*, 15-29, 31-22, 28-24 (J-7) , 21-25, 11-8, 25-30, 8-3, 30-26, 24-19, 22-18, etc. black wins, by Al Lyman.
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(J-1) If 24-20, then 9-13, 31-26 or 27-24, and 7-11*, etc. will win for black, by Al Lyman.

(J-2) This move prevents the desired Compilation Landing described in note G.

(J-3) If 27-24 then 2-7, 19-16, 12-19, 23-16, 7-10, etc. black wins, by Al Lyman.
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(J-4) "A fine attempt at a man-down draw that comes up just short, " by Al Lyman.

(J-5) If 10-14, then 22-26, 24-19, 26-31, 19-15, 18-22*, 14-18, 23-26, 18-25, 31-27, 30-23, 21-30*, etc. black wins, by Al Lyman.

(J-6) If 11-8 then 18-23!, 24-20, 27-31*, 15-18, 23-26, 18-25, 31-27, 30-23, 21-30*, 23-19, 30-26, 8-3 (J-6a) , 27-24, 19-15, 24-19, 15-11, 26-23, 11-8, 2-7!, 3-10, 12-16, 20-11, 19-24, 28-19, 23-14! black wins, by Al Lyman.

(J-6a) If 8-4, then 2-7*, 4-8, 7-10, 8-11, 27-24, 11-7, 24-15, 7-14, 26-23, 14-9, 23-27, 9-14, 27-32, 14-9, 15-11, 9-14, 12-16, and black holds the two pieces with one to a classic win, by Al Lyman.

(J-7) If 11-8, then 22-18, followed by 2-6, etc. wins for black, by Al Lyman.
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(K) 5-9 instead runs back into the Compilation Landing described in note G.

(L) If 32-27?? then 9-14*, 27-24 (L-1) , 7-11*, 15-10, 11-15, 20-16, 15-18, 19-15!, 12-26, 31-13, 2-6, etc. black wins, by Al Lyman.

(L-1) If 15-10 then 8-11, 27-24, 11-15, 20-16, 15-18, 24-20, 18-27, 31-24, 5-9, 19-15, 12-19, 10-6, 1-10, 15-6, 9-13, etc. black wins, by Al Lyman.

(N) If 28-24?? then 7-11*, 25-21 (M-1) , 11-27, 21-14, 9-18, 32-14, 3-7, etc. black wins, by Al Lyman.

(M-1) If 32-27, 11-18, 23-14, 9-18 and 31-26 then 1-6, 19-15, 3-7, 24-19, 7-11*, etc. black wins, by Al Lyman.
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(N) If 9-13 then 28-24* will draw, by Al Lyman.

(O) If 28-24?? then 7-11*, 32-27, 11-18, 23-14, 9-18, 26-23 (O-1) , 8-11, 23-14, 2-7, 25-22 or 27-23, 7-10, 14-7, 3-10, etc. black wins, by Al Lyman.

(O-1) If 26-22 then 5-9, 22-15, 3-7, 27-23, 7-10, 15-6, 1-10, etc. black wins, by Al Lyman.
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(P) If 32-27?? then 9-14!*, 27-24 (P-1) (P-2) (P-3) , 7-11*, 15-10, 11-15, 25-22, 5-9*, 20-16, 8-11*, 16-7, 2-11, 24-20 (P-4) , 15-24, 28-19, 11-15, 19-16, 12-19, 23-16 (P-5) , 14-18, 22-17, 9-14*, 17-13 (P-6) , 14-17*, 16-11, 15-19!* (P-7) , 11-7, 18-22, 26-23, etc. to a black win, by Al Lyman.

(P-1) If 19-16, 12-19, 23-16, then 7-11*, 16-7, 2-18*, 26-22, 5-9*, 22-15, 14-18*, 28-24, 9-14*, 24-19, 1-6, etc. black wins, by Al Lyman.
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(P-2) If 28-24 then 7-11*, 26-22, 11-18, 22-15, 2-7, 15-10 (If 25-22, then 7-10, etc. black wins) , 8-11, 25-22 14-17, etc. black wins, by Al Lyman.

(P-3) If 15-10 then 8-11, 25-22, 11-15, 27-24, 5-9, 20-16, 9-13*, 10-6!, 1-10, 24-20, 15-24, 28-19, 3-8*, 22-18, 8-11, 18-9, 11-15, 9-5, 15-24, 5-1, etc. black wins, by Al Lyman.

(P-4) If 22-17 then 11-16*, 17-13, 16-20, 13-6, 20-27, 19-16, 12-19, 23-16, 14-17*, 6-2, 27-31, 26-23, 31-27, 23-19, 15-24, 28-19, 27-23, 19-15, 23-19, 16-11, 19-23*, etc. black wins, by Al Lyman.

(P-5) Similar to the bridge ending which emerges in the trunk line of Variation III, but here black still has a piece on square #9 and can crown three kings to win, by Al Lyman.

(P-6) If 16-11 then 18-22, 26-23, 15-18, 23-19, 22-26!*, 30-23, 18-27, etc. gives the "move" back to black and wins, by Al Lyman.
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(P-7) 18-22? as given in the August 1997 issue of the ACFB, page 7 only draws, continue: 26-23, 22-26, 23-18, 15-22, 30-23, 22-26, 11-7, 26-31, 7-2, 31-27, 23-19, 27-24, 19-16!*, 24-19, 16-12*, 21-25, 20-16, 25-30, 16-11, 30-26, 11-8, 26-23, 2-7, 17-22, 8-4, 22-25, 4-8, 23-18, 8-4, etc. to a "standoff" draw!, by Al Lyman.

(Q) 22-18 also seems to draw, continue: 7-11, 15-10*, 2-7, 32-27* (Q-1) , 7-14, 18-9, 5-14, 19-16, 12-19, 23-7, 3-10, 20-16, etc. transposes into the man-down drawing ending of the trunk line, by Tom Sheehan.

(Q-1) If 18-14? then 13-17, 10-6! (Q-1a) , 1-10, 23-18, 12-16, 19-12, 10-15, 26-23, 15-22, 23-19, 22-25, 19-16, 25-29, 14-10, 7-14, 16-7, 3-10, 12-3, etc. to a critical ending unresolved at press time, by Al Lyman.

(Q-1a) If 19-16, 12-19, 23-16 then 8-12, 32-27, 12-19, 27-24, 11-15, 26-22, 17-26, 30-16, 21-25, 24-19, 15-24, 28-19, 5-9*, 14-5, 3-10, etc. to a winning bridge ending, by Al Lyman.

(R) If 5-9 then 27-24 runs back into the Compilation Landing described in note G.

(S) If 22-18?? then 1-6, 27-24, 2-7, 19-16, 12-19, 23-16, etc. and white is lost, by Al Lyman.
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Variation I: John Meaden of England has suggested that 9-14 instead, the prominent attack of the two-move era, is worthy of resurrection. Following are some important games on this line:

9-14, 27-23, 8-11, 22-18 (A) , 4-8, 18-9, 5-14, 25-22, 11-15 (B) , 30-26 (C) , 6-9 (D) , 24-20, 15-24, 28-19, 9-13, 22-18, 14-17, 21-14, 10-17, 26-22, 17-26, 31-22, 7-10, 29-25, 8-11, 32-27, 3-7, 18-15, 11-18, 22-6, 1-10, 25-22 (E) , 10-14, 22-18, 14-17, 18-15, 17-22, 15-11, 7-16, 20-11, 22-25, 27-24, 25-30, 24-20, 30-26, 11-8, 2-6, 8-3, 6-9, 23-18 drawn, Asa Long vs. John F. Horr, Long-Horr Subscription Match, 1923, Game #26.
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Notes:
(A) 22-17? was played by Asa Long to a losing cause, continue: 5-9, 24-20, 4-8, 30-26, 11-15, 26-22? (A-1) , 15-24, 28-19, 9-13, 22-18, 13-22, 18-9, 6-13, 25-18, 8-11, 29-25? (A-2) , 13-17, 21-14, 10-17, 25-22, 17-26, 31-22, 7-10, 22-17, 2-6, 18-14, 11-15, 14-7, 3-10, 20-16, 15-24, 16-11, 10-14 black wins, John F. Horr vs. Asa Long, Long-Horr Subscription Match, 1923, Game #25.

(A-1) "Looks like an absolute loser. 17-13, 15-24, 28-19, 1-5, 32-27 or 19-16 would still give white a lot of fight, yet black has the superior position, " by Newell W. Banks.

(A-2) "Loses at once; 32-27 would have offered more play; however, black has a powerful game against anything, " by Newell W. Banks.

(B) If 14-18 then 22-15, 11-27, 32-23, 8-11, 29-25, 11-15, 21-17, 6-9, 25-21, 9-14, 17-13, 2-6, 30-26, 14-17, 21-14, 10-17, 19-10, 7-14, 26-22, 17-26, 31-22, 14-17, 22-18, 17-22, 18-14, 22-26, 23-19, 26-31, 14-9, 31-27, 9-2, 27-20, 19-15, 12-16, 13-9 drawn, E.C. Waterhouse vs. John F. Horr, Sixth American Tourney - Game #216.

(C) 29-25? may lose, continue: 6-9, 24-20, 15-24, 28-19, 8-11, 32-28, 11-15, 30-26, 15-24, 28-19, 7-11, 22-18, 2-6, 25-22, 10-15, 19-10, 6-15, 22-17, 15-22, 17-10, 22-25, 26-22, 25-30, 22-17, 9-13, 17-14, 11-15, 14-9, 30-25, 9-6, 15-19, 23-16, 12-19, 6-2, 25-22, 2-7, 19-24, 20-16, 22-18, 16-12, 18-23, etc. black wins, John F. Horr vs. E.C. Waterhouse, Sixth American Tourney - Game #215.
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(D) If 8-11 then 22-18, 15-22, 26-17, 11-15, 24-20, 15-24, 28-19, 10-15, 19-10, 6-15, 17-10, 7-14, 29-25, 2-7, 32-27, 1-5, 25-22, 5-9, 22-17, 15-19, 23-16, 12-19, 17-10, 7-14, 20-16, 19-23, 27-18, 14-23, 21-17, etc. drawn, Alfred Jordan vs. John F. Horr, Third American Tourney.

(E) If 25-21?? then 13-17, 21-14, 10-17, 19-15 (E-1) , 17-22, 15-11, 7-16, 20-11, 22-26, 27-24, 26-31, 24-20, 31-27, 23-18, 27-23, 18-14, 2-6, etc. black wins, by Newell W. Banks.
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(E-1) If 23-18 then 17-22, 27-23, 22-26, 19-15, 12-16, 20-11, 7-16, 18-14, 26-31, 23-18, 31-26, 15-11 (E-1a) , 26-23, 11-8, 16-20, 8-3, 20-24, 3-8, 24-27, 8-11, 23-19, 11-8, 2-6, 8-3, 27-31, 3-8, 31-26, 8-3, 26-30, 3-8, 30-25, 8-3, 25-21, etc. black wins, by Newell W. Banks.

(E-1a) If 14-9, then 26-23, 18-14, 23-18, 15-11, 16-19, 11-8, 19-23, 8-3, 23-26, 14-10, 18-15, 10-6, 15-10, 6-1, 26-30, 3-8, 30-25, 8-11, 25-22, 11-16, 22-17, 16-19, 17-14, etc. black wins, by Newell W. Banks.
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Variation Il Walter Hellman based his defensive efforts upon 31-26 instead, continue: 12-16! (A) (B) , 19-12, 3-8, 12-3, 17-21, 3-10, 6-31, 23-19, 31-26, 30-23, 21-30, 23-18, 30-25 (C) , 24-20, 25-21, 18-15, 21-17, 19-16, 17-14, 15-11, 14-10, 16-12, 5-9, 12-8, 9-13, 8-3, 13-17 (D) , 3-8, 2-7! (E) , 11-2, 4-11, 2-6*, 10-7, 6-9, 17-22, 28-24!* (F) , 22-26, 24-19, 26-30, 9-14, 1-6, 19-15*, 11-18, 14-23, etc. drawn, by Al Lyman.
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(A) Although this in-and-out shot was briefly mentioned by Hellman, he did not provide any detailed play. Instead, he focused upon the 5-9 attack in the June 1980 issue of Midwest Checkers, page 88. After 5-9 Hellman's analysis continued with 25-22?? (A-1) and a number of black wins were presented.

(A-1) But instead of 25-22??, white can still play Chinook's 18-15* move and draw! If 4-8 in reply, then 24-20* (A-1a) , and now if either 9-13 or 9-14 or 17-21 then white can play 28-24* which steers the game directly back into the Compilation Landing described in note G of the trunk variation.

(A-1a) Both 32-27?? and 25-22?? lead into the Note J losses presented in the trunk variation.

(B) If 4-8 then 25-22 (B-1) , 17-21, 22-17, 8-11, 24-20, 6-10, 28-24, 5-9, 17-13, 2-6, 26-22, 10-14, 19-15, 14-17, 15-8, 17-26, 23-19, 26-31, 8-4, 7-10, 4-8, 10-14, 18-15, 14-18, 15-10, 6-15, 19-10, 9-14, etc. drawn, by Al Lyman.
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(B-1) Or 24-20, 17-21, 28-24*, 5-9, 32-28*, 9-13, 25-22* results in the Compilation Landing described in note G of the trunk variation.

(C) If 30-26, then 24-20, 5-9, 18-15, 1-6, 15-11, 26-23 (C-1) , 20-16, 9-14, 28-24, 14-17, 24-20, 23-18, 11-7, 2-11, 16-7, 17-22, 7-3, 22-26, 19-16, etc. drawn, by Al Lyman.

(C-1) If 9-14 then 20-16, 14-18, 28-24, 18-22, 24-20, 22-25, 11-7, etc. drawn, by Al Lyman.
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(D) If 1-6 then 3-8, 6-9, 8-12, 9-14, 12-16, 13-17, 32-27*, 17-22, 27-23 and white can pitch the piece off square #14 and follow with the 11-8 2x2 to draw, by Al Lyman.

(E) If 17-22, then 8-12, 22-25, 12-16 and the black king is forced to move, allowing 11-7, etc. to draw, by Al Lyman.

(F) White can not move 9-14?? and allow 1-6 and 6-10, etc. to a black win, by Al Lyman.
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Variation Ill The 5-9 attack was treated as the original trunk line in the 1996 edition of the Compilation. The following analysis is presented: 5-9, 24-20*, 4-8, 28-24*, 9-13 (A) , 31-26* (B) (C) , 17-21 (D) (E) , 25-22*, 6-9, 32-28* (F) , 7-11 (G) (H) , 15-10, 11-15, 20-16, 8-11, 16-7, 2-11, 24-20, 15-24, 28-19, 11-15, 19-16, 12-19, 23-16, 9-14, 26-23, 14-17, 23-18, 17-26, 18-11, 26-31 (I) , 11-7, 31-27, 7-2, 13-17, 16-12, 17-22, 20-16, 22-26 (J) , 30-23, 27-18, 16-11, 21-25, 11-8, 25-30 (K) , 8-4, 30-25, 4-8* (L) , 25-21, 8-11, 18-22, 2-6, 22-17, 6-9, 17-13, 9-14, 21-25, 11-15, 25-22, 15-11, 22-26, 11-16, 26-23, 16-11, 23-19, 11-15, etc. a drawn ending, shown by Ben Boland in Boland's Bridges, page 77, note H.
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Notes:
(A) If 9-14 then 15-10, 6-15, 19-10, 8-11, 31-26, 11-15, 25-22, 2-6!, 22-13, 14-17, 13-9, 6-13, 23-19, 7-14, 19-10, 17-22, 26-17, 13-22, etc. and the opposing bridges result in a draw, by Al Lyman.

(B) The 1996 edition of the Compilation game 32-28?? instead, which is now assessed as a loss, continue: 7-11*, 31-27, 11-18, 23-14, 3-7*, 27-23, 17-21* (B-1) , 25-22, 1-5* (B-2) , 22-18, 13-17, 30-26, 21-25*, 19-16, 12-19, 23-16, 8-12!* (B-3) , 16-11, 7-16, 20-11, 25-30, 26-23, 17-21, 11-8, 21-25, 8-3, 25-29, 3-8, 29-25, 23-19, 30-26, etc. and black wins because white cannot protect the pieces, by Al Lyman.

(B-1) If 6-10? then 25-21* (5-la) , 8-11, 23-18, 11-16, 20-11, 7-23, 14-7, 2-11, 21-14, etc. drawn, by Les Balderson
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(B-1a) If 23-18?? then 17-21, 14-9, 10-14, 18-15, 14-18, 20-16, 7-10, 15-6, 1-10, 9-5, 13-17, etc. black wins, L. Balderson vs. D. Cayton, 1997 District #4 Mail Tournament.

(B-2) If 6-10 then 14-9, 10-14, 22-18, 14-17, 18-15, etc. drawn, by Brian Hinkle.

(B-3) Corrects 6-9? to a drawn result by Brian Hinkle in the 1996 edition of the Compilation, page 10, note J.
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(C) If 31-27?? then 17-21, 25-22, 6-9, 22-18, 13-17, 20-16, 17-22*, 16-11, 7-16, 24-20, 22-26, 20-4, 26-31, etc. black wins, A. Cook vs. N. Proffitt, The Starship Ladder.

(D) If 7-11 then 15-10*, 6-15, 19-10, 2-7!, 25-21*, 7-14, 23-18*, 14-23, 21-14*, 1-6, 26-19, 6-10, 14-7, 3-10, 32-27!*, 13-17 (D-1) , 27-23, 10-14, 30-25, 17-21, 25-22, 21-25, 22-18, 14-17, 19-15*, 25-30, 15-10, 30-26, 24-19, 26-22, 19-15*, 22-26, 23-19, 26-23, 18-14, etc. drawn, by Al Lyman.

(D-1) If 11-15 then 27-23*, 13-17* (D-1a) , 30-25, 17-21, 25-22, 21-25, 22-17, 25-30, 17-14, etc. drawn, by Al Lyman.

(D-1a) 8-11?? loses after 30-25, 13-17, 25-21, 17-22, 23-18, 22-26, 18-14, etc. by Al Lyman.
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(E) If 6-9? then white quickly secures an equal or better game with 15-11* (if 15-10?? as originally published then Tom Sheehan now believes this to be a loss) . The correct defense is 1-5*, if 19-15, then 2-7*, etc. to a probable draw, by Brian Hinkle.

(F) The Compilation Landing, described and pictured by Al Lyman in the August 1997 issue of the ACFB - page 8, has now been reached. If 22-18?? instead then 7-11*, 15-10, 2-7*, 19-15, 7-14, 15-10, 14-17, 32-27, 17-22*, 26-17, 13-22, 18-15, 11-18, 23-5, 8-11, 27-23, 22-26, 23-18, 26-31, etc. black wins, by Al Lyman.

(G) If 1-5 then 22-18*, 9-14, 18-9, 5-14, 15-11 (G-1) , 8-15, 19-10, 14-17, 24-19, 7-14, 19-15, 3-8 (G-2) , 28-24, 2-7, 15-10, 7-11, 23-18, 14-23, 26-19, 17-22 (G-3) , 10-6, 22-25, 6-2, 25-29, 2-6, 29-25, 6-10, 25-22, 10-14, 13-17 (G-4) , 19-15, 11-18, 14-23, 22-26, 24-19, 26-31, 23-18, 31-27, 19-15, 27-24, 15-10, 8-11, 10-6, 12-16, 6-2, 24-19, 2-7, 19-15, 18-23, 17-22, 7-3, 22-26, 3-8, 26-31, 8-12, 15-19, 12-8, 19-26, 8-15, etc. a splendid man-down draw!, by Al Lyman.
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(G-1) Al Lyman has analyzed an easier draw with 15-10, 14-17, 19-15, 7-14, 24-19*, 3-7, 15-10, 7-11, 10-7*, 11-15, 19-10, 2-11, 23-18*, 14-23, 26-19, 17-22, 10-6, 22-25, 6-2, 25-29 and 2-6 (G-1a) will draw, by Al Lyman.

(G-1a) Or 2-7, 29-25, 7-16, 25-22, 28-24, 22-18, 16-11, 8-15, 19-10, 18-15, 10-6, 13-17, 6-1, 17-22, 1-6, 22-25, 6-9, 25-29, 9-14, 29-25, 14-17, etc. drawn, by Al Lyman.

(G-2) If 2-6 (G-2a) then 28-24, 3-7, 15-11, 7-16, 20-11, 6-10, 24-19, 17-22, 26-17, 13-22, 11-8, etc. drawn, by Al Lyman.

(G-2a) If 2-7 then 28-24* (G-2aa) and 3-8 returns to the trunk line of Note G. (G-2aa) Beware of 15-11??, 7-16, 20-11 which loses after 21-25!*, 30-21, 12-16*, etc. black wins, D. Cayton vs. L. Martin 1997 District #4 Mail Tournament.
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(G-3) If 11-15 then 10-7, 15-18, 19-15, 18-23, 24-19, etc. drawn, by Al Lyman.

(G-4) If 22-17 then a see-saw draw is available with 14-9, 17-22, 9-14, etc. by Al Lyman.

(H) If 9-14 instead, then 15-10, 14-17, 19-15, 7-14, 22-18, 1-5, 18-9, 5-14, 24-19 transposes into Note G-1 above.
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(I) Left as a draw with no further play in the 1996 edition of the Compilation, page 10, note K, D. Cayton vs. B. Vanderpool, Star Wars Postal Tournament: Round 1.

(J) If 22-25 then 16-11, 25-29, 11-8, 29-25, 8-4, 25-22, 4-8, 27-23, 8-11, 22-17, 2-6, 17-13, 11-8 (J-1) , 23-18, 6-2*, 13-9, 8-11, 18-22, 11-8*, 22-17, 2-7, 17-13, 7-11, 13-17, 11-7, 17-22, 7-2, 22-18, 8-11 drawn, by Ben Roland.
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(J-1) Now the same as Boland's Bridges, page 91, #122 (W. Bryden position) , line #2, move #7 (after 4-8) .

(K) Now the same as Boland's Bridges, page 77, note G, top line (after 26-30) , derived from the #106 A. Hynd position shown on page 71.

(L) If 2-7??, then 18-22, 4-8, 22-17, 8-11, 17-14, 11-16, 14-9, 7-2, 25-22, 16-11, 22-18, etc. black wins, by Ben Boland.
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12-16, 24-20, 10-15 OFFICIAL NAME: THE SKUNK

This new opening recently received tentative approval by the ACF Executive Committee. It may now be played with mutual consent between two players in any ACF sanctioned postal event. Final and unconditional approval for this opening is expected to be finalized for all postal events commencing in 1998.
It should be noted that this is the second of the original 24 Barred Openings which does not involve an immediate exchange. The other opening is 9-13, 24-20, 12-16 and continues to show no hope for survival.
It was Elbert Lowder who first suggested the Skunk as the name for this opening. Just prior to press time, a majority vote of the contestants of the Final Round of the Star Wars Postal Tournament ruled in favor of the Skunk over the Unicorn as the official name for this opening.

12-16, 24-20, 10-15, 22-18 (A) , 15-22, 25-18, 11-15* (B) (C) (D) , 18-11, 8-15, 20-11, 7-16 (E) , 23-19 (F) (G) , 16-23, 27-11, 3-8* (H) , 11-7 (I) , 2-11, 21-17 (J) (K) , 11-15 (L) , 17-13 (M) , 9-14, 29-25, 8-11 (N) , 26-23, 4-8, 28-24, 8-12 (O) , 31-26, 15-18, 32-27, 11-16, 24-20, 16-19, 23-16, 12-19, 20-16, 5-9, 26-23, 19-26, 30-23, 1-5, 16-11, 14-17, etc. drawn, by Al Lyman.

(A) For a superb treatment of the secondary 28-24 attack by Al Lyman, see the June 1996 issue of the ACFB, page 8.

(B) If 8-12?? then 29-25, 9-14 (If 6-10, then 27-24 returns to note C) , 18-9, 5-14, 28-24, 11-15 (B-1) , 20-11, 7-16, 23-19, 16-23, 27-11, 3-8, 11-7, 2-11, 25-22, 11-15, 22-18, 15-22, 26-10, 6-15, 21-17, 1-6, 17-14, 15-18, etc. white wins, analysis by Chinook.

(B-1) If 3-8 then 23-18, 14-23, 27-18, 11-15, 18-11, 8-15, 20-11, 7-16, 24-20, 16-19, 21-17, etc. white wins, by Brian Hinkle.

(C) If 6-10?? then 27-24 (Or 29-25 first) , 8-12, 29-25, 10-15, 25-22, 7-10, 24-19, 15-24, 28-19, 1-6, 22-17*, 9-14, 18-9, 5-14, 26-22, 11-15, 20-11, 15-24, 30-26, etc. white wins, by Brian Hinkle.

(D) If 7-10?? then 29-25, 3-7, 25-22, 9-13, 28-24, 8-12, 24-19, 5-9, 27-24, 1-5, 30-25, 4-8, 32-27*, 10-14, 18-15, 11-18, 20-4, 7-10, 22-15, 12-16, 19-12, 10-28, 26-22, 28-32, 12-8, 6-10, 22-18, etc. white win, M. Long vs. B. Vanderpool, 1997 Inter District Mail Play Tournament.

(E) Results in a transposition from another three-move opening: 11-15, 24-20, 12-16, 20-11, 7-16, 22-18, 15-22, 25-18, 10-15, 18-11, 8-15 same, Churchill's Compilations, page 1797, Column 7, by Earl Hangen.

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(F) Ronnie Winton of Scotland has suggested 28-24 instead as a strong attack. One possible continuation: 16-20, 23-19, 6-10, 19-16, 1-6, 16-11, 9-13, 26-23, 5-9, 30-26, 9-14, 23-19, 15-18, 19-16, 18-22, 26-17, 13-22, 11-7, 2-11, 16-7, 14-17, 21-14, 10-17, 7-2, 6-9, 2-6, 9-13, 24-19, 22-26, etc. drawn, by Checkers 3.0.

(G) If 21-17 then 16-20, 29-25, 4-8, 25-22, 8-11, 23-18, 6-10, 17-14, 10-17, 22-6, 15-22, 26-17, 1-10, 27-23, 11-15, 17-13, 3-7, 23-19, 15-24, 28-19, 7-11, 31-27, 10-14, etc. drawn, B. Vanderpool vs. D. Cayton, Star Wars Postal Tournament: Round 1.

(H) If 3-7??, then 28-24, 7-16, 24-20, 16-19, 20-16, 6-10, 16-11, 10-15, 29-25 (H-1) , 9-14, 31-27, 1-6, 25-22, 6-10, 26-23* (H-2) , 19-26, 30-23, 5-9, 27-24, 2-6, 23-19, 9-13, 11-7, etc. white wins, by Checkers 3.0.

(H-1) Checkers 3.0 has also assessed 21-17 as a winning move.

(H-2) Corrects the continuation of the Churchill's Compilations line mentioned in note B, which gave 22-17? and suggested a white win. But 22-17? allows 5-9* which forces 26-22, and then black seems to survive the bridge ending after 19-23, 27-18, 14-23, by Dennis Cayton and Checkers 3.0.

(I) 28-24 is a feeble attempt to steer one's opponent into the loss mentioned above in note H, continue: 8-15, 24-20, 4-8* (1-A) , 20-16, 8-11, 16-7, 2-11, 21-17, 6-10, 17-13, and 10-14 (1-B) , 13-6, 1-10, 29-25, 15-18, etc. is suggested to draw by Checkers 3.0.

(I-A) 15-19?? instead transposes directly into the loss shown above in note H.

(I-B) If 1-6? then 29-25, 15-19?? (can anything else draw for black?) , 31-27, 9-14, 25-21!* (I-Ba) , 10-15, 26-22, 11-16, 22-17, 6-10, 13-9, 14-18, 9-6, 18-22, 6-2, 22-26, 30-23, 19-26, 32-28!, etc. white wins, by Checkers 3.0

(I-Ba) 25-22? only draws, as played by Earl Hangen vs. the author on a game contested aboard the Starship Ladder.

(J) A powerful attack from Bert Vanderpool. The original trunk line of the 1996 edition of the Compilation featured 29-25 instead, continue: 9-13, 25-22, 11-15, 28-24, 8-11, 26-23, 4-8, 31-27, 5-9, 23-18 (J-1) , 8-12, 27-23, 12-16, 21-17, 6-10, 32-28, 16-20, 24-19, 15-24, 28-19, 20-24, 30-26, 11-15, 18-11, 9-14, etc. drawn, analysis by Brian Hinkle and Chinook.

(J-1) If 24-20 then 1-5, 22-17, 13-22, 30-26, 22-31, 32-28, 31-24, 28-1, 11-15*, 1-6, 15-18*, 23-14, 9-18, etc. drawn, by Brian Hinkle.

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(K) 28-24 is an attack originated by Brian Hinkle, continue: 11-15 (9-13 may also draw) , 26-23, 8-11, 21-17, 6-10 (K-1) , 24-20, 9-14, 17-13, 14-17, 29-25, 4-8, 31-26, 10-14, 32-28, 17-21, 28-24, 15-18, 23-19, 14-17, 19-16, 11-15, 13-9, 5-14, 16-11, 18-23!, etc. drawn, by Brian Hinkle and Chinook.

(K-1) If 4-8, 29-25 then 6-10* is essential to return to the main note K shown above as if 8-12?? instead then 24-20, 6-10, 17-13, 9-14, 13-9, 14-17, 9-6, 17-22, 25-18, 15-22, 23-19, etc. white wins, M. Long vs. B. Podoff, Star Wars Postal Tournament: Round 1.

(L) Black seems not to have an alternate defense with 6-10, continue: 17-13, 10-14* (L-1) , 13-6, 1-10, 28-24, 11-15, 29-25, 8-11, 25-22, 5-9, 26-23!* (32-27?, 9-13, etc. to a probable draw, by Al Lyman) will win by Bert Vanderpool.

(L-1) If 9-14?? then 28-24, 10-15, 29-25, 11-16 (L-1a) , 24-20*, 15-19, 20-11, 8-15, 25-21*, 4-8, 26-22*, etc. white wins, by Al Lyman.

(L-1a) If 15-19, 24-15, 11-18 then 32-27*, 8-11, 13-9*, 18-23, 26-19, 14-18, 27-24*, 5-14, 24-20, etc. white wins, by Al Lyman.

(M) If 26-23 then 8-11* (M-1) , 28-24, 6-10* (M-2) , 23-19 (M-3) , 9-14, 17-13 and now 1-6* stops the deadly 13-9 attack and draws, by Al Lyman.

(M-1) If 8-12?? then 28-24, 4-8, 29-25, 8-11 (M-1a) , 24-20, 12-16, 32-28, 6-10, 17-13, etc. white wins, B. Vanderpool vs. M. Long, 1997 Inter District Mail Tournament.

(M-1a) If 6-10 then 25-21, 8-11, 31-27, 9-13, 17-14, 10-17, 21-14, etc. looks bad for black, by Al Lyman.

(M-2) If 4-8?? then 29-25, 8-12, 24-20*, 6-10, 17-13, 9-14 (M-2a) , 25-22, 14-17, 31-26, 12-16, 23-18*, 5-9, 13-6, 16-19, 22-13, 15-31, 6-2, etc. white wins, by Al Lyman.

(M-2a) If 10-14, 13-6, 1-10 then 25-22, etc. wins for white, by Al Lyman.

(M-3) If 17-13 here then 11-16, 13-6, 15-19, etc. draws easily, by Al Lyman.

(N) 8-12 may also draw, continue: 25-22, 14-17, 32-27, 4-8, 27-23, 15-19, 23-16, 12-19, 31-27, 8-12, 27-24 (N-1) (N-2) , 17-21, 24-15, etc. drawn, by Al Lyman.

(N-1) If 22-18 then 17-21, 18-15, 6-10, etc. drawn, by Al Lyman.

(N-2) If 27-23 then 12-16, etc. draws, by Al Lyman.

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(O) If 6-10?? then 25-21*, 15-18, 23-19*, 18-22 (O-1) , and 13-9*, etc. wins for white, by Al Lyman.

(O-1) If 1-6 instead then 21-17 followed by 19-16 will win for white, by Al Lyman.

36

You unlock this door with the key of imagination. Beyond it is another dimension, a dimension that is as vast as space and as timeless as infinity. It is the middle ground between light and shadow; between science and superstition. It lies between the pit of man's fears and the summit of his knowledge. It is a Journey into a wondrous land whose boundaries are that of imagination. You have Just crossed over into...
THE TWILIGHT ZONE!


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9-13, 24-20, 11-16 OFFICIAL NAME: THE TWILIGHT ZONE

This fascinating opening was the Director's choice in the Final Round of the Star Wars Postal Tournament. We have reached the conclusion that this opening is quite sound. Consequently, it will be submitted to the ACF Executive Committee for official approval for all postal events by the end of 1997.
It was the author who nominated the Twilight Zone as the official name for this opening. This choice was approved by a majority vote of the contestants in the Final Round of the Star Wars Postal Tournament.

9-13, 24-20, 11-16 (A) , 20-11, 8-15, 23-18 (B) (C) (D) , 3-8 (Var. I-Go Here) (E) , 18-11, 8-15, 27-24 (Var. II Go Here) (Var. III-Go Here) (F) , 5-9* (G) , 24-20 (H) (I) , 15-19 (J) (K) , 22-18, 9-14 (L) , 18-9, 1-5, 32-27, 5-14, 25-22, 4-8, 22-17, 13-22, 26-17, 14-18, 30-26, 18-22 (M) *, 27-23 (N) , 6-9, 23-16, 12-19, 17-13, 2-6, 26-17, 8-11, 29-25, 10-15, 17-14, 9-18, 21-17, 7-10, 25-21, 19-24, 28-19, 15-24, 17-14, 10-17, 21-14, 18-22, 14-9, 6-10, 9-6, 10-14, 6-2, 14-17, 2-7, 11-15, etc. draws with care, analysis by Elbert Lowder.

(A) The original move order shown in previous editions of the Compilation was 11-16, 24-20, 9-13. However, the contestants of the Final Round of the Star Wars Postal Tournament agreed that this move order was more natural and voted for its adoption.

(B) Assessed by Brian Hinkle, Elbert Lowder, and others as the strongest attack; Marion Tinsley considered this attack a white win.

(C) 28-24 is another worthy attack, continue: 15-19 (C-1) (This defense has been found to be very questionable. Instead 5-9* in note-C-1 is recommended.) (C-2) , 24-15, 10-19, 23-16, 12-19, 27-23 (C-3) , 4-8, 23-16, 8-12, 16-11, 7-16, 22-18, 6-10, 25-22 and now 3-7 or 1-6 (C-4) may draw, by Brian Hinkle. Analysis is needed!

(C-1) 5-9 (highly recommended) also may also be tenable, continue: 24-20, (if 22-18, 15-22, 25-18, 12-16, 24-19, 16-20, 29-25, 4-8, 25-22, 8-11 we have a transposition into one of the games famous openings. "The Wagram." It is also the trunk game in "Basic Checkers" from the Wagram. 9-13, 24-20, 11-15. In the old days, this was more usually brought up from 11-15, 24-20, 9-13 etc a GAYP opening)7-11, 27-24, 4-8 (C-1a) , 22-18 (C-1b) , 15-22, 25-18, 10-15, 30-25, 15-22, 25-18, 6-10, 24-19, 2-6, 19-16, 12-19, 23-7, 10-14, 26-23, 3-10, 29-25, etc. drawn, B. Hinkle vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.

(C-1a) Transposes into 9-13, 23-18, 11-15, 18-11, 8-15, 24-20, 7-11, 27-23, 5-9, 28-24, 4-8 same, see Keystone Checker Review, January 1994, pages 669-670, for some fine analysis by Brian Hinkle and Jack Mourning on this line.

(C-1b) The KCR game mentioned above proceeded with 23-19 instead.

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(C-2) Brian Hinkle has assessed 3-8?? as a loss, continue: 22-18, 15-22, 25-18, 8-11, 29-25, 10-14, 18-9, 5-14, 25-22, 6-10, 24-20, 14-17, 21-14, 10-17, 23-18, 7-10, 18-14, 2-7, 32-28, 1-5, 27-23, 4-8, 14-9, 5-14, 22-18, 17-22, 18-9, 11-15, 26-17, 13-22, 9-6, 15-18, 23-14, 10-17, 6-2, 8 11, 2-6, 17-21, 30-26, 22-25, 26-23, etc. white wins, M. Long vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(C-3) If 22-18 then 4-8, 25-22, 5-9, 29-25, 7-10, 21-17, 1-5, 25-21, 17-14, 10-17, 21-14, 8-11, 30-25, 6-10, 32-28 7, 18-14, 9-18, 17-21, 25-22, 21-25, 22-17, 13-22, 26-17, 25-30, 8-3, 7-10, 3-8, 30-25, 8-11, 25-22, 11-16, 22-13, 16-23, etc. drawn, B. Vanderpool vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(C-4) But not 5-9??, 29-25, 2-6, 21-17, 3-7, 31-27, 16-19, 25-21, 19-23, 26-19, 7-11, 19-16, 11-20, 32-28, etc. white wins, D. Cayton vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(D) The immediate 22-17 attack also has merit: 22-17, 13-22, 25-11, 7-16, 29-25 (D-1) , 5-22, 5-9, 22-18, 8-11* (D-2) , 18-14, 9-18, 23-7, 3-10, 28 24, 16-20, 26-23, 11-15, 30-26, 10-14, 24-19, 15-24, 32-28, 6-10, 28-19, 2-7, etc. drawn agreed, B. Hinkle vs. P. Morris, Star Wars Postal Tournament: Final Round (unofficial game) .Back to Trunk

(D-1) If 23-18 (D-1a) then 4-8, 29-25, 8-11, 25-22, 5-9, 28-24, 3-7, 2 -23, 10-14, 24-20, 16-19, 23-16, 12-19, 22-17, 14-23, 27-18, 19-23, 17-14, 1-5, 31-26, 23-27, 32-23, 11-15, 18-11, 7-16, 20-11, 9-27, 26-23, 27-32, 23-19, 6-10, 11-8, 32-27, 8-3, 27-23, 19-16, 10-15, 16-11, 15-19, 21-17, 5-9, etc. drawn, N. Proffitt vs. B. Hinkle, Star Wars Postal Tournament; Final Round.

(D-1a) Other promising attacks here include 28-24! and 21-17, by Brian Hinkle. Analysis is needed!

(D-2) 3-7?? instead may appear to be more natural, but it loses!, continue: 28-24, 16-19, 24-15, 10-19, 23-16, 12-19, 21-17, -13, 17-14, 8-11, 30-25, 1-5, 32-28, 11-15, 18-11, -16, 25-21, 2-7, 27-23, 7-11, 31-27, etc. white wins, P. Morris vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(E) If 5-9??, 18-11, 7-16 then 22-18 (E-1) , 16-19, 25-22, 4-8, 29-25, 9-14, 18-9, 1-5, 27-24, 5-14, 24-15, 10-19, 26-23, 19-26, 30-23, 8-11, 2 -18, 6-9, 28-24, etc. white wins, B. Vanderpool vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

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(E-1) Or 28-24, 4-8, 22-18, 8-11, 24-20, 10-15, 26-23, 15-22, 25-18, 6-10, 29-25, 10-15, 18-14, 9-18, 23-14, 16-19, 25-22, 3-7, 30-26, 11-16, 20-11, 7-16, 14-10, 1-5, 22-17, 13-22, 26-17, 5-9, 17-13, 9-14, 10-6, 2-9, 13-6, etc. white wins, G. Miller vs. D. Cayton, Star Wars Postal Tournament; Final Round. (F) A new attack conceived by Elbert Lowder and played during the Final Round of the Star Wars Postal Tournament. Until only recently this attack was believed to knock out the entire opening!Back to Trunk

(G) The only move to draw. If 15-19?? (G-1) , 24-15, 10-19 then 22-18, 5-9, 25-22, 4-8, 32.27*, 12-16 (G-2) , 18-15, 16-20, 30-25, 7-11, 22-18, 1-5, 25-22, 19-23, 26-19, 9-14, 18-9, 11-25, 29-22, 5-14, 27-23, 8-11, 19-16, 11-15, 16-11, etc. white wins, by Elbert Lowder.

(G-1) If 6-9?? then 26-23, 7-11, etc., and white can steer the game into the white win shown in note K, by Elbert Lowder.

(G-2) If 6-10 then 18-15, 1-6, 30-25, etc. leads to a white win, by Elbert Lowder. (H) If 32-27 then 1-5 (H-1) (H-2) , 24-20, 15-19, 22-18, 9-14, 18-9, 5-14, etc. runs into the trunk line.

(H-1) 9-14 may survive here, continue: 27-23, 6-9, 22-17, 13-22, 25-11, 7-16, 24-20, 16-19, 12-19, 20-16, 2-7, 29-25, 10-15, 25-22, 14-18, 22-17, 9-13, 17-14, 18-22, 26-17, 13-22, 21-17, 15-18, 17-13, 18-23, 16-12, 7-11, 12-8, 11-16, 8-3, 23-26, 30-23, 19-23 draw agreed, B. Vanderpool vs. P. Morris, Star Wars Postal Tournament: Final Round.

(H-2) Or 15-19, 24-15, 10-19, 22-18, 4-8, 25-22, 7-10, 29-25, 9-14*, 18-9, 1-5*, 27-24, 5-14, 24-15, 10-19, 22-17, 13-29, 30-25, 29-22, 26-1, etc. drawn, N. Proffitt vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.Back to Trunk

(I) If 22-18, 15-22, 25-18 then 4-8, 32-27 (1-A) , 8-11, 29-25, 10-15, 25-22, 6-10, 27-23, 1-5, 24-19, 15-24, 28-19, 11-15, 18-11, 7-16, 22-18, 16-20*, 26-22, 20-24, 30-26, 24-28, 18-15, 2-6, 15-11, 28-32, 11-7, 32-28, 7-3, 28-32, 3-8, 32-28, 22-18, 28-24*, 26-22, 24-15, 18-11, 10-14, 22-18, 6-10, 11-7 and 14-17, etc. drawn, by Elbert Lowder. Note: This setting has been confirmed by Chinook as a draw with 99% certainty.

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(I-A) If 26-23 then 8-11, 24-19, 1-5, 29-25, 9-14, 18-9, 5-14, 28-24, 14-17, 21-14, 10-17, 23-18, 6-10, 18-14, 11-16, 14-9, 16-23, 31-26, 17-21, 26-19, 7-11, 24-20, 11-15, 32-28, 15-24, 28-19, 13-17, 20-16, 10-14, etc. drawn, B. Hinkle vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

(J) Black now appears to have an alternate drawing route with 15-18, 22-15, 10-19, continue: 25-22 (J-1) , 1-5, 22-18, 9-14, 18-9, 5-14, 29-25, 4-8, 25-22, 7-10* (J-2) , 32-27, 8-11, 21-17!, 14-21, 22-18, 2-7, 27-24, 10-15, 18-14, 6-10, 14-9, 10-14, 9-6, 14-18, 6-2, 12-16, 31-27, 18-22, 26-17, 13-22, 27-23, 19-26, 30-23, 22-26, 24-19, 15-24, 28-12, etc. drawn, analysis by Elbert Lowder. Confirmed by Chinook.

(J-1) 21-17, 13-22, 25-18 has only led to tame results so far, continue: 4-8, 29-25 (J-1a) , 9-13, 31-27, 8-11, 27-24, 19-23, 26-19, 11-16, 20-11, 7-26, 25-21 (25-22 better?) , 6-9, 24-19, 2-7, 19-15, 7-10, 15-6, 1-10, 28-24, 12-16, 24-19, 16-20, 19-16, 20-24, 16-12, 10-14, 12-8, 24-27, 8-3, 27-31, 18-15, 14-18, etc. drawn, B. Hinkle vs. D. Cayton, Star Wars Postal Tournament: Final Round.Back to Trunk

(J-1a) If 32-27 then 1-5, 27-24, 7-11, 24-15, 9-14, 18-9, 11-18, 28-24, 5-14, 24-19, 6-10, 29-25, 18-23, 25-22, 8-11, 22-18, 14-17, 18-14, 2-7, 14-9, 17-21, 9-6, 21-25, 30-21, 23-30, 6-1, 11-15, 1-6, 15-24, 6-15, 30-25, etc. drawn, B. Hinkle vs. M. Long, Star Wars Postal Tournament: Final Round.

(J-2) If 6-10?? then 32-27, 8-11 (J-2a) , 20-16, 11-20, 27-24, 20-27, 31-6, 2-9, 28-24, 7-11, 24-20, 11-15, 20-16!, 12-19, 26-23, etc. white wins, by Elbert Lowder.

(J-2a) If 2-6 then 22-17, 13-22, 26-17, 14-18, 27-24, etc. white wins, by Elbert Lowder.

(K) If 7-11?? then 26-23, 10-14, 30-26, 6-10, 32-27, 4-8, 20-16, 12-19, 23-7, 2-11, ?6-23, 1-6, 31-26, 8-12, 27-24, 11-16, 24-19, 15-24, 28-19, 16-20, 22-18, 20-24, 18-15, 24-27, 15-11, 27-32, 11-7, 32-27, 7-2, 27-18, 25-22, etc. and white can win, by Elbert Lowder.

(L) Essential to prevent 18-15 and a resulting white win, by Elbert Lowder.

(M) "Until this move was found, I believed that white could beat all defenses against the 27-24 attack", by Elbert Lowder.

(N) If 27-24 then 22-25!*, 24-15, 10-19, 29-22, 8-11, 22-18, 19-24, 28-19, 11-16, 20-11, 7-30, 31-26, 30-14, 17-1, etc. a very pretty draw! G. Miller vs. B. Hinkle, Star Wars Postal Tournament: Final Round.
Back to start of Twilight Zone-/Top of Page-/Index

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Variation I
Black may have an alternate and viable defense with 7-11, which has been studied extensively by Matt Long. The following analysis is provided:
7-11, 18-14, 10-17, 21-14, 6-9, 26-23, 9-18, 23-14, 4-8, 28-24 (A) , 3-7 (3) , 22-18, 15-22, 25-18, 11-16, 27-23, 13-17, 29-25, 1-6 (C) , 25-21, 16-20!* (D) , 24-19, 6-9!*, 19-15, 7-11, 15-10, 11-16, 10-6, 16-19, 23-16, 12-19, 6-1 (E) , 9-13, 31-26, 8-12, 18-15, 17-22, 26-17, 13-22, 14-10, 20-24, 21-17, 11-16, 17-13, 22-26, 30-23, 19-26, etc. drawn, very fine analysis by Matt Long.

(A) 22-28, 15-22, 25-18 may be stronger, continue: 12-16, 28-24 (A-1) , 16-20, 24-19, 13-17, 31-26, 11-16, 19-12, 3-7, 12-3, 2-6, 3-10, 6-31, etc. drawn, B. Hinkle vs. G. Miller, Star Wars Postal Tournament: Final Round.

(A-1) Alert!! Brian Hinkle has suggested that 29-25, 31-26, and 27-23 may be superior attacks which must be fully resolved before the 7-11 defense is completely accepted as a viable defense. Analysis is needed!

(B) If 12-16?? then 24-20!, 8-12, 30-26!, 2-6, 27-24, 3-7, 25-21, 6-10, 29-25, 10-17, 21-14, 1-6, 25-21, 6-9, 14-10, 7-14, 22-17, 13-22, 26-10, etc. white wins, B. Vanderpool vs. D. Cayton, Star Wars Postal Tournament: Final Round.

(C) If 16-20?? then 24-19, 17-22, 25-21, 22-25, 21-17, 25-29, 17-13, 20-24, 14-9, 5-14, 18-9, etc. white wins, by Brian Hinkle.

(D) Improves 17-22?? as given in the 1996 edition of the Compilation, continue: 24-19, 16-20, 19-15, 6-9, 15-10, 7-11, 21-17, 22-25, 30-21, 9-13, 10-7, 13-22, 7-3, 22-25, 21-17, 25-30, 17-13, 30-25, 14-9, 5-14, 18-9, 25-22, 9-6, 2-9, 13-6, etc. to a probable white win, analysis by Brian Hinkle and Checkers 3.0.

(E) If 14-10, 17-22, 10-7, 2-11, 21-17 then 9-13, 17-14, 13-17, 6-2, 17-21, 14-10 (E-1) , 5-9*, 2-7, 11-16, 10-6, 8-12, 6-1, 9-13, 7-11, 19-23*, 18-15, 23-26*, 30-23, 16-19, 23-16, 12-19, 1-5, 19-23, etc. drawn, by Matt Long.

(E-1) If 2-6 instead then 8-12, 14-10, 19-23, 10-7, 11-16, 6-10, 5-9, 18-15, 20-24, 32-28, 16-19, 7-2, 22-25, 2-7, 23-27, 15-11, 25-29, 11-8, 27-32, 7-11, 32-27, etc. drawn, analysis by Chinook.Back to Trunk

< name="tz2">Variation Il
Another significant attack is 22-18, 15-22, 25-18, continue: 4-8, 29-25 (A) , 8-11, 28-24 (B) , 5-9 (C) , 25-22 (D) , 10-15, 27-23 (E) , 6-10, 32-28, 1-5, 24-19, 15-24, 28-19, 9-14 (F) , 18-9, 5-14, 22-18, 11-15, 18-11, 7-16, 26-22, 2-7, 22-18, 14-17, 21-14, 10-17, 19-15, 16-19, 23-16, 12-19, 18-14, 19-24, 14-9, 17-21, 9-6, 7-10, 15-11, 10-15, 6-2, 24-28, 2-6, 28-32, 6-10, 15-19, 10-14, 19-23, etc. draw agreed, P. Morris vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

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(A) If 27-23 then 8-11, 29-25, 10-15, 25-22, 5-9, 28-24, 6-10, 32-28, etc. runs back into the Variation II trunk line.

(B) And if 25-22 then 5-9, 27-23, 10-15* (B-1) , 28-24, etc. runs back into the trunk line.

(B-1) If 11-16?? then 28-24, 7-11, 24-20, 10-15, 21-17, 6-10, 31-27, 1-5, 17-14, 10-17, 27-24, 17-21, 23-19, 16-23, 26-10, 9-14, 18-9, 5-14, 10-7, 11-15, 7-3, 14-18, 24-19, 18-25, 19-10, 25-29, 3-8, 29-25, 10-7, 2-11, 8-15, 25-22, 32-28, etc. white wins, B. Hinkle vs. P. Morris, Star Wars Postal Tournament: Final Round.

(C) 6-9 also seems to survive, continue: 25-22, 9-14, 18-9, 5-14, 27-23, 11-15* (C-1) , 31-27, 7-11, 23-18, 14-23, 27-18, 2-6*, 18-14, 10-17, 21-14, 11-16, 24-20, 16-19, 14-10, 6-9, 10-7, 9-14, 7-3, 14-18, 3-7, 18-25, 30-21, 15-18, 7-11, 18-23* (C-2) , etc. will draw, by Nigel Proffitt.

(C-1) If 1-5?? then 24-19, 11-15, 19-16, 12-19, 23-16, 14-18, 22-17, 13-22, 26-17, 18-22, 16-12, 5-9, 12-8, 22-25, 8-3, 25-29, 17-13, 2-6, 31-26, 29-25, 32-27, 25-29, 27-24, 29-25, 3-8, 15-19, 24-15, 10-19, 21-17*, 25-29, 26-22, etc. white wins, G. Miller vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

(C-2) If 1-6?? then 11-16, 19-24, 16-11, 18-22, 26-17, 13-22, 11-15, 24-28, 15-18, etc. white wins, M. Long vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

(D) If 24-19, then 10-15! (D-1) , 19-3, 2-7, 3-10, 6-29, 21-17, 13-22, 26-17, 1-6, 27-24, 9-13, 17-14, 13-17, 31-26, 17-21, 26-22, 29-25, 22-17, 25-22, 17-13, 22-18, 14-9, 6-10, 9-5, 10-14, 5-1, 14-17, 13-9, 18-14, 9-6, 21-25, 30-21, 14-18, 21-14, 18-2, 24-19, etc. drawn, N. Proffitt vs. G. Miller, Star Wars Postal Tournament: Final Round.

(D-1) A more difficult defense is 11-15, 18-11, 7-23, 27-18, 1-5, 26-23, 12-16, 31-27, 2-7, 27-24, 13-17, 21-14, 10-17, 24-19, 16-20, 18-15, 20-24, 15-11, 7-16, 19-12, 24-27, 23-19, 27-31, 12-8, 17-21!*, 25-22, 21-25!*, 30-21, 31-26, etc. drawn, D. Cayton vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

(E) If 26-23, then 6-10* (E-1) , 23-19, 11-16, 18-11, 16-23, 27-18, 7-16, 30-26, 1-5, 32-27, 9-14, 18-9, 5-14, 24-20, 16-19, 27-23, 2-7, 23-16, 12-19, 22-17, etc. drawn, analysis by Paul Morris.

(E-1) 7-10??, 23-19, 10-14, 19-10, 14-23, 27-18, 6-15, 21-17, 1-5, 17-14, 11-16, 18-11, 9-25, 30-21, 5-9, 11-8, 16-20, 24-19, 9-14, 8-3, 14-18, 3-8, 18-22, 19-15, 22-25, 8-11, 25-30, 15-10, 30-25, etc. white wins, D. Cayton vs. P. Morris, Star Wars Postal Tournament: Final Round.

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(F) 11-15, 18-11, 7-16 will also draw, continue: 22-18, 10-14* (F-1) , 26-22, 2-7*, 30-26, 7-10, 19-15, 10-19, 22-17, etc. drawn, by Nigel Proffitt.

(F-1) If 16-20?? then 26-22, 20-24, 30-26, 2-6, 21-17, 24-28, 19-16, 12-19, 23-16, 10-15, 18-11, 6-10, 11-7, 9-14, 7-2, 14-21, 2-6, 10-15, 6-10, 15-19, 10-15, 19-24, 16-11, 28-32, 22-17, 13-22, 26-17, 5-9, 11-7, 9-13, 17-14, 21-25, 7-2, 25-30, 2-7, 13-17, 15-19, etc. white wins, N. Proffitt vs. P. Morris, Star Wars Postal Tournament: Final Round.Back to Trunk

Variation III
The following attack was featured as the trunk line in the 1996 edition of the Compilation. It was originally favored by Chinook and was once assessed as a white win by Marion Tinsley:
22-17, 13-22, 25-11, 7-16, 28-24 (A) , 16-19 (B) (C) , 24-15, 10-19, 21-17! (D) (E) , 5-9 (F) , 29-25, 4-8* (G) , 26-22, 6-10, 22-18, 1-6, 17-13, 8-11, 31-26, 10-15, 26-22, 2-7, 25-21, 7-10, 22-17, 15-22, 17-14, 9-18, 27-23, 19-26, 30-7, etc. drawn, analysis by Chinook (at depth 27) .

(A) If 27-24 (A-1) then 10-15, 29-25, 4-8, 24-20, 16-19, 32-27, 6-10, 27-24, 5-9, 25-22, 9-13, 20-16, etc. draw agreed, D. Cayton vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.

(A-1) 26-23! is a new attack being tested by Dennis Cayton in Star Wars II.

(B) A defense originally favored by Brian Hinkle. 16-20 instead may also be a viable defense, continue: 24-19 (B-1) , 4-8, 32-28 (B-2) , 10-15, 19-10, 6-15, 29-25, 2-6, 21-17, 6-10, 17-14, 10-17, 25-21, 17-22, 26-17, 5-9, 30-26, 12-16, 17-14, 9-18, 26-23, 8-11, 23-14, 16-19, 31-26, 15-18, 14-10, 11-15, 10-7, 18-22, 26-17, 15-18, 7-2, 19-23, etc. drawn, analysis by Matt Long and Checkers 3.0.

(B-1) Chinook prefers 29-25 instead, continue: 4-8, 25-22, 8-11, 26-23, 10-15, 30-25, 5-9, 22-17, 1-5, 25-22, 6-10, 17-13, 2-6, 23-19, 9-14, 27-23, 20-27, 31-24, 11-16 and 24-20, 15-24, 20-11 leaves a comfortable advantage for white with an unclear result at press time. Analysis is needed!

(B-2) If 27-23 then 8-11, 19-16 (B-2a) , 12-19, 23-7, 2-11, 29-25 (B-2b) , 10-14, 25-22, etc. what result? Analysis is needed!

(B-2a) Brian Hinkle has suggested 10-15 as another possible defense. Analysis is needed!

(B-2b) Both 21-17 and 26-23 are attacks which warrant investigation, by Brian Hinkle.

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(C) The 4-8 defense may rest on shaky ground, continue: 29-25 (C-1) , 8-11, 25-22, 16-20, 26-23, 6-9, 31-26, 9-14, 22-17, 5-9, 17-13, 1-5, 13-6, 2-9 and 26-22 results in another setting assessed by Chinook as a comfortable white advantage with an unclear result, by Brian Hinkle. Analysis is needed!Start of Var-3

(C-1) If 24-20 then 16-19, 29-25, 5-9, 25-22, 8-11 (C-1a) , 32-28 (C-1b) , 11-15, 27-24, 9-13, 20-16, 2-7, 16-11, 7-16, 24-20, 1-5, 20-11, 19-24, 28-19, 15-24, 11-8, 12-16, 8-3, 16-20, 26-23, 6-9, 3-8, 10-14, etc. drawn, analysis by Chinook.

(C-1a) Brian Hinkle has also suggested 10-15 as a possible defense with drawing possibilities. But if 2-7?? then 22-18, 10-14, 26-22, 14-23, 27-18, etc. to a white win, by Marion Tinsley.

(C-1b) If 22-17 then 9-14, 32-28, 11-15, 27-24, 15-18, 24-15, 10-19, 17-10, 6-15, 20-16, 1-6, 16-11, 6-10, 11-8, 19-24, 28-19, 15-24, etc. drawn, analysis by Chinook.

(D) An important attack initiated by Parks Herzog. If 29-25 instead then 5-9 (D-1) is suggested by the author to maintain the primary defensive theme of the trunk line.

(D-1) If 6-10 then 21-17! (D-1a) , 4-8 (D-1b) , 25-22, 5-9, 22-18, 12-16, 17-13, 1-6, 26-22, 10-14, 18-15, 14-18, 22-17, 18-22, 27-23, 19-26, 30-23, 2-7, 23-18, 7-10, 32-28, 10-19, 17-14, etc. to an unclear result, by Checkers 3.0.

(D-1a) The 1996 edition of the Compilation continued with 25-22, 5-9* (D-1aa) , 22-18, 1-6, 32-28, 4-8, 27-24, 12-16, 24-15, 10-19, 21-17, 9-13, 17-14, 6-10, 14-7, 2-11, etc. drawn, by Al Lyman.

(D-1aa) If 10-15?? then 21-17, 5-9, 17-13, 1-6, 22-18, 15-22, 26-17, 4-8, 30-25, 2-7, 27-23, 19-26, 31-22, 7-10, 22-18, 8-11, 32-28, 12-16, 28-24, 10-15, 25-22, 16-20, 17-14, 20-27, 14-5, etc. white wins, by Marion Tinsley.

(D-1b) If 5-9?? then 17-13!, etc. results in the "suspected" white win mentioned in note G below.Start of Var-3

(E) If 26-22 then 4-8, 21-17, 6-10, 22-18, 5-9, 17-13, 8-11, 13-6, 2-9, 31-26, 10-14, 29-25, 14-23, 27-18, 1-5, 18-14, 9-18, 26-23, 19-26, 30-14, etc. drawn, analysis by Chinook.

(F) 4-8 also seems to draw, continue: 17-14, 2-7, 26-22, 8-11, 30-25, 6-10, 22-17, 1-6, 32-28, etc. drawn, analysis by Chinook.

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(G) If 6-10?? then 17-13!* (G-1) is currently suspected by Brian Hinkle and others to win for White. This move was first played by George Miller against the author in the Star Wars Postal Tournament: Final Round, continue: 10-15 (G-2) , 13-6, 1-10, 25-22, 4-8, 22-17, 12-16, 30-25, 2-6, 25-21, etc. white wins.

(G-1) If 25-22? then 9-14, 17-13, 4-8, 22-18, 14-23, 27-18, 8-11, 26-22, 19-24, 30-26, 11-16, 26-23, 24-28, 22-17, 16-19, 23-16, 12-19, 18-15, 19-23, 15-6, 2-9, 13-6, 1-10, etc. drawn!, B. Hinkle vs. P. Herzog, Star Wars Postal Tournament: Round I.

(G-2) A desperate attempt. If 1-6 in reply, then the game saving 2x2 which climaxed the game shown above in Note G-1 is no longer available and if the natural 9-14 instead, then white has a devastating attack with 13-9!, which has been confirmed by Chinook as a white win! However, no detailed continuation was available at press time.Start of Var-3 -/Top of Page-/Index

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10-14, 22-17, 9-13 OFFICIAL NAME: THE BLACK HOLE
As a result of much analysis generated by the Star Wars Postal Tournament, this opening is now concluded to be sound. It will be submitted to the ACF Executive Committee for official approval for all postal events by the end of 1997.
The immediate exchange via 17-10 and 6-15 creates a huge crater of empty squares on #6, #9, and #10. These vacant squares became the rationale for its name: The Black Hole.

10-14, 22-17, 9-13, 17-10, 6-15 (A) , 25-22 (Var. I Go Here) (B) (C) , 5-9 (D) , 23-18 (E) (Note-E is corrected to win. Webmaster. As far as we know, there is no draw in this opening. ) (F) , 12-16, 26-23 (G) , 16-19, 23-16, 11-20, 18-11, 8-15, 24-19 (H) , 15-24, 28-19, 4-8, 22-18 (I) , 1-5, 29-25 (J) , 8-11, 27-23 (K) , 7-10* (L) , 31-27 (M) , 9-14, 18-9, 5-14, 23-18, 14-23, 27-18, 2-6, 25-22, 6-9, 21-17, 20-24, 19-15, 10-19, 17-14, 19-23, 14-5, 24-27, etc. drawn, B. Hinkle vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.

(A) This setting forms a transposition into a standard GAYP opening: 9-14, 22-18, 10-15, 18-9 and now 6-13 same!, by Brian Hinkle; the 7-14?? jump loses and transposes into a barred opening treated later in this Compilation: 9-13, 21-17, 10-14, 17-10, 7-14, 25-21 same, by Carl Reno.

(B) If 26-22 (B-1) then a transposition has been reached from a standard mail play opening: 9-13, 23-19, 10-15, 19-10, 6-15, 26-23 same.

(B-1) And 23-18, 15-22, 25-18 reaches the same setting as 9-13, 23-19, 10-15, 19-10, 6-15, 22-18, 15-22, 25-18.

(C) 24-20 was attempted by the author vs. Brian Hinkle in the Final Round of the Star Wars Postal Tournament: 24-20, 15-19, 23-16, 12-19 (C-1) , 27-24, 5-9 (1-6 may be better) , 24-15, 11-18, 28-24, 9-14, 24-19, 8-11, 19-16, 4-8, 16-12, 11-15, 26-22, 8-11, 30-26 and 11-16* (everything else loses) , 20-11, 7-16, etc. leads to an even or slightly better game for black.Back to Trunk

(C-1) Another transposition is noteworthy: 10-15, 24-20, 15-19, 23-16, 12-19, 22-18, 9-14, 18-9, 6-13 same! A new defence to this opening is born!, by Brian Hinkle.

(D) Favoured by Brian Hinkle. An alternate defence conceived by Chinook: 15-19, 24-15, 11-25, 29-22, 8-11 now appears to be in jeopardy, continue: 22-18 (D-1) , 7-10 (D-2) (D-3) , 28-24, 3-7, 24-19 (D-4) , 13-17, 21-14, 10-17, 27-24, 1-6, 24-20, 6-10, 19-16, 12-19, 23-16, 10-14, 18-9, 5-14, 26-23, 17-22, 32-27, 14-17, 23-18, 17-21, 27-23, 22-25, 23-19, 25-29, 18-14, 29-25, 31-26, 25-29, 14-9, etc. to a probable white win, analysis by Chinook. Can black's defence be improved?

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(D-1) A new attack conceived by Brian Hinkle. If 23-18 then 5-9, 28-24, 7-10, 26-23, 3-8* (D-1a) , 30-25, 10-14, 18-15, 11-18, 22-15, 8-11, 15-8, 4-11, 24-19, 2-7*, 25-22, 7-10*, 22-18, 13-17*, 18-15, 11-18, 19-16, 12-26, 31-6, 10-15, 6-2, 15-19, 2-7, 18-22, 7-11, 14-18, 11-15, 19-23, 21-17, 23-26, 17-14, 26-30, 14-10, 30-26, 10-7, 1-5!*, 7-2, 18-23, 27-18, 26-23, etc. drawn, analysis by Brian Hinkle and Checkers 3.0.Back to Trunk

(D-1a) A defence originally conceived by Nigel Proffitt. If 3-7?? then 24-19, 1-5 (D-1b) , 27-24, 9-14, 18-9, 5-14, 22-18, 14-17, 21-14, 10-17, 18-14, etc. white wins, G. Miller vs. B. Hinkle, Star Wars Postal Tournament: Round I.

(D-1b) If 11-16 then 18-15, 1-6, 22-18, 4-8, 30-25, 7-11, 27-24, 9-14, 18-9, 11-27, 32-23, 10-14, 25-22, 13-17, 22-13, 8-11, 24-20, 14-18, 23-14, 16-23, 21-17, 12-16, 14-10, 6-15, 9-6, 2-9, 13-6, 15-18, 6-2, 18-22, 2-7, 23-26, 31-27, etc. a very pretty white win, analysis by Checkers 3.0.

(D-2) If 1-6 then 28-24, 11-16, 18-14, 16-20, 24-19, 4-8, 23-18, 6-9 and 27-23!* should win, by George Miller and Brian Hinkle.

(D-3) If 2-6 then 28-24, 7-10, 26-22, 4-8, 24-20, 12-16, 27-24, 8-12, 24-19, etc. white wins, G. Miller vs. B. Hinkle, Star Wars Postal Tournament; Final Round.

(D-4) Improves and corrects 26-22? as given to a drawn result in the 1996 edition of the Compilation, page 12, note C-1.

>From Brian Hinkle: "The 15-19 break-up defence reduces the pieces and the chances for black to draw."

(E) 22-17!, 13-22, 26-17 is another new attack developed by Brian Hinkle, continue: 9-13* (E-1) , 17-14, 11-16, 24-19, 15-24, 28-19, 8-11, 29-25, 16-20, 25-22, 11-16, 30-26, 7-10, 14-7, 3-10, 22-18, 4-8, 18-14, (here 21-17 instead wins, then 13-22, 26-17, 8-11 17-13 now if 1-5 13-9 wins and if 1-6 18-15 wins. Webmaster) 10-17, 21-14, 13-17, 26-22, 17-26, 31-22, 2-6, 22-18, 1-5, etc. drawn, M. Long vs. G. Miller, Star Wars Postal Tournament: Final Round.Back to Trunk

(E-1) Assessed by Brian Hinkle as the only sound defence. If 11-16?? then 24-19* (E-1a) , 15-24, 28-19, 9-13, 30-25*, 13-22, 25-18, etc. is suggested to win. Further analysis is invited.

(E-1a) 17-13? instead seems to let black off the hook, continue: 16-19, 23-16, 12-19, 13-6, 2-9, 21-17, 8-11, 17-13, 1-6, 24-20, 19-23!, 27-18, 15-22, 30-25, 7-10, 25-18, 10-15, 18-14, 9-18, 20-16, 11-20, 28-24, 20-27, 32-14, 6-10, 14-7, 3-10, etc. drawn, D. Cayton vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

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(F) Brian Hinkle has conceived another novel attack with 29-25 (F-1) , continue: 7-10, 24-20, 9-14, 23-18, 14-23, 27-18, 10-14, 18-9, 1-5, 9-6, 2-9, 28-24, 12-16 (F-2) , 24-19!, 15-24, 26-23, 24-28, 22-18, 9-14, 18-9, 5-14, 25-22, 11-15, 20-11, 15-19, 23-16, 8-15, 30-26, 14-18, 22-17, 13-22, 26-17, 4-8*, 16-11, 8-12, 17-14, 12-16, 14-10, 18-22? (F-3) , 10-6, 22-25, 6-1, 16-19, 1-6, 19-23, 6-10, 15-18, 11-7, 18-22, 7-2, 23-26, 21-17, 26-30, 10-15, 25-29, 2-6, 29-25, 15-11, 25-21, 17-14, 21-17, 6-10, 17-13, 11-15, 30-25, 31-27, 13-17, 14-9, 22-26, 9-6, 26-31, 27-24, 25-22, 6-2, 22-26, 15-18, 17-21, 2-7, 26-22, 18-25, 30-21, etc. drawn, P. Morris vs. B. Hinkle, Star Wars Postal Tournament: Final Round. Elbert Lowder commented on the ending: "The piece on #3 instead of #4 makes the ending a draw."Back to Trunk

(F-1) 30-25! is a new attack being tested by Dennis Cayton in Stars Wars II. Brian hinkle has expressed the opinion that this attack has ômore scopeö than 29-25.

(F-2) Brian Hinkle has also suggested 3-7 to draw.

(F-3) 18-23, 11-7, 15-19, 7-2, 19-24, 3-8, etc. leads to an easier draw, by Brian Hinkle.

(G) If 21-17 then 7-10, 26-23, 16-20, 29-25, 8-12, 24-19, 15-24, 28-19, 11-15, 18-11, 3-7, 11-8, 4-11, 23-18, 11-15, 18-11, 7-23, 27-18, 1-5, 25-21, 12-16, 30-26, 2-7, 17-14, 10-17, 21-14, 16-19, 32-28, 20-24, 22-17, 13-22, 26-17, etc. drawn, by Checkers 3.0.

(H) If 30-25 then 1-5, 22-18 (H-1) (H-2) , 15-22, 25-18, 9-14, 18-9, 5-14, 29-25, 4-8, 24-19, 7-10, 25-22, 3-7, 22-18, 14-23, 27-18, 13-17, 21-14, 10-17, 18-14, 17-22, 14-9, 22-25, 9-5, 25-30, 5-1, 8-11, 1-5, etc. drawn, M. Long vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(H-1) 24-19, 15-24, 28-19, 4-8, 19-15, 2-6, 22-18, 20-24, 27-20, 7-10, 32-27, 10-19, 18-14, 9-18, 27-23, 19-26, 31-15, 8-11, 15-8, 3-12, 21-17, 13-22, 25-18, etc. drawn, B. Hinkle vs. M. Long, Star Wars Postal Tournament: Final Round.Back to Trunk

(H-2) 22-17!, 13-22, 25-11, 7-16, 21-17! is a new variation introduced by Dennis Cayton in Star Wars II.

(I) If 30-26 then 8-11, 26-23, 9-14, 22-18, 1-5, 18-9, 5-14, 29-25, 2-6, 25-22, 6-10, 22-18, 14-17, 21-14, 10-17, 18-14, 17-21, etc. draws with care, analysis by Chinook.

(J) 30-26 instead runs back into the note I play.

(K) 19-16, 9-14, 18-9, 5-14, 25-22, 11-15, 31-26, 14-18, 30-25, 7-10, 16-11, 10-14, 32-28, 13-17!, 22-13, 15-19, 26-22, 19-24!, 22-15, 24-31, 15-10 draw agreed, G. Miller vs. M. Long, Star Wars Postal Tournament: Final Round.

(L) If 20-24?? then 32-28, 7-10, 25-22, 2-7, 30-26, 3-8, 22-17, 13-22, 26-17, 9-14, 18-9, 5-14, 17-13, 11-15, 13-9, 7-11, 9-6, 15-18, 6-2, 18-27, 2-7, 8-12, 7-16, 27-32, etc. white wins, N. Proffitt vs. P. Morris, Star Wars Postal Tournament: Final Round.

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(M) If 25-22 then 2-7, 32-28! (M-1) , 3-8* (M-2) , 28-24, 20-27, 31-24, 10-14, 19-15 (M-3) , 13-17, 22-6, 7-10, 18-9, 10-28, 6-2, 5-14, etc. drawn, B. Hinkle vs. P. Morris, Star Wars Postal Tournament: Final Round (unofficial game) .

(M-1) If 30-26 then 9-14, 18-9, 5-14, etc. draws, by Brian Hinkle.

(M-2) If 20-24?? then 30-26, 3-8, 22-17, 13-22, 26-17, 9-14, 18-9, 5-14, 17-13, 11-15, 13-9, 15-18, 9-6, 18-27, 6-2, 8-11, 2-6, 11-15, 19-16, etc. white wins, B. Hinkle vs. P. Morris, Star Wars Postal Tournament: Final Round.

(M-3) If 24-20 then 7-10, 19-16, 8-12, 16-7, 14-17, etc. draws, by Paul Morris.

Variation 1: Back to Trunk
24-19, 15-24, 28-19, 1-6 (A) (B) , 23-18 (C) , 6-9 (D) , 19-15 (E) (F) , 9-14, 18-9, 5-14, 26-22 (G) , 11-18, 22-15, 14-18 (H) , 21-17, 13-22, 15-10, 7-14, 27-23, 18-27, 25-9, 12-16, 31-24, 8-11, 9-5, 11-15, 5-1, 16-19, 24-20, 19-23, 1-5, 15-19, 5-9, 19-24, 9-14, 24-27, 29-25, 27-31, 14-17, 4-8, 25-22, 8-11, 22-18, 11-16, 20-11, 23-27, 32-23, 31-26, 18-14, 26-19, 14-9, 19-16, 17-22, 16-7, 9-5, 7-10, 5-1, 10-14, 22-26, 14-18, 1-5, 3-8, etc. drawn, B. Hinkle vs. N. Proffitt, Star Wars Postal Tournament: Round I.

(A) 7-10 is a new and undeveloped defensive idea which may draw, by Brian Hinkle. Analysis is needed.

(B) 11-16? leads to a precarious development for black and may lose, continue: 25-22, 8-11, 22-18, 7-10, 29-25, 3-7, 25-22, 5-9, 22-17, 13-22, 26-17, 9-13, 30-26, 13-22, 26-17, 1-5, 27-24, 16-20, 32-28, 20-27, 31-24, etc. white wins, by Brian Hinkle.

(C) If 19-15 then 11-18, 23-14, 6-9, 26-23, 9-18, 23-14, 7-10, 14-7, 3-10, 30-26, 8-11, 26-23, 11-16, 23-18, 5-9, 25-22, 4-8, 29-25 (C-1) , 16-19, 31-26, 10-14, 18-15, 2-6, 32-28, 14-18, etc. drawn, by Brian Hinkle.

(C-1) If 27-24 then 16-20, 21-17, 20-27, 32-23, 12-16, 29-25, 8-11, 25-21 (C-1a) , 10-15, 31-26, 15-19, 17-14, 19-24, 14-5, 24-27, etc. will draw, by Brian Hinkle and Elbert Lowder.

(C-1a) If 31-27 then 2-7, 18-14, 9-18, 23-14, 16-19, 14-9, 11-16, 9-6, 16-20, etc. will draw, by Brian Hinkle and Elbert Lowder.

(D) 7-10 also seems to draw, continue: 18-14, 10-17, 21-14, 11-16, 25-21, 16-23, 27-18, 3-7, 29-25 (D-1) , 6-9, 31-27, 8-11, 27-24, 11-16, 32-27, 2-6, 26-23, 16-20, 24-19, 6-10, 30-26, 10-17, 21-14, 13-17, etc. drawn, analysis by Checkers 3.0.Back to Start of Var-1

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(D-1) If 26-23 then 6-9, 23-19, 13-17, 18-15, 9-18, 21-14 is a continuation generated by Chinook, with 7-11 in reply suggested to draw by Brian Hinkle.

(E) If 26-23 then 7-10, 18-15 (E-1) , 11-18, 23-7, 3-10, 25-22, 8-11, 22-18, 9-14, 18-9, 5-14, 29-25, 11-15, 27-23 (is 27-24 better?) , 15-24, 25-22, 10-15, 32-28, 15-19, 23-16, 12-19, 30-26, etc. drawn, by Brian Hinkle.

(E-1) If 27-24! (an attack by Elbert Lowder) , then 3-7*, 25-22, 11-15*, 18-11, 8-15, etc. will draw, by Elbert Lowder and Brian Hinkle.

(F) If 27-23 then 7-10, 19-15, 10-19, 23-7, 3-10, 26-23, 8-11, 31-27, 2-7 (F-1) , 18-14, 9-18, 23-14, 10-17, 21-14, 13-17, 25-22, 17-26, 30-23, 11-15, 27-24, 7-11, etc. drawn, analysis by Chinook (at depth 29)

. (F-1) Or 10-14, 25-22, 2-7*, 27-24, 11-16, 29-25, 16-20, 32-27, 4-8, 24-19, 7-11*, 18-15, 11-18, 22-15, 20-24, 27-20, 14-17, 21-14, 9-27, 20-16, 27-32, 16-11, 32-27, 11-4, 27-23, etc. drawn, analysis by Nigel Proffitt.

(G) If 15-10 then 14-18, 10-6, 2-9, 26-23, 9-14, 25-22, 18-25, 29-22, 7-10, 22-18, 14-17, 21-7, 3-10, 27-24, 11-15, 18-11, 8-15, 32-28, 4-8, 24-20, 13-17, 31-26, 8-11, 28-24, 10-14, etc. drawn, by Brian Hinkle.

(H) 2-6, 25-22, 14-18, 29-25, 12-16, 27-24, 16-19, 24-20, 7-11, 21-17, 6-10, 15-6, 3-7, 22-15, 13-29, 6-1, 11-18, 1-6, 8-12, 6-2, 7-11, 2-6, 18-22, 6-10, 19-23, 30-25, 22-26, 31-22, 23-26, 25-21, 29-25, 22-17, 25-22, 17-13, 26-31, 21-17, 31-26, 17-14, 22-17, 14-9, 26-23, etc. drawn, N. Proffitt vs. B. Hinkle, Star Wars Postal Tournament: Final Round.Back to Start of Var-1-Back to Trunk/-Index/Top of Page

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THE OUTER LIMITS

The following two openings must now be classified as "endangered species". The following pages present some compelling evidence that these openings may be unsound: -
11-16, 21-17, 10-14: The Shark
11-16, 22-18, 10-15: The Cheetah
Before these creatures are permanently cast into the Black Hole of the barred openings, we would like to invite all analysts and players to join us in one last rescue mission in an attempt to salvage these openings.

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11-16, 21-17, 10-14 SUGGESTED NAME: THE SHARK

The play which follows strongly suggests that the Shark may have been harpooned. But before this opening is permanently exiled to "The Black Hole" we would like to invite all interested analysts and players to take a second look. Can The Shark be rescued?

11-16, 21-17, 10-14, 17-10, 6-15, 22-18 (A) , 15-22, 25-18, 16-20 (B) (C) , 29-25 (D) , 8-11, 25-21! (E) , 1-6 (F) (G) (H) , 30-25 (1) , 6-10 (J) , 25-22, 10-14, 22-17, 7-10, 17-13, 3-7, 13-6, 2-9, 26-22, 9-13, 18-9, 5-14, 22-18, 14-17, 21-14, 10-17 (K) , 24-19, 11-16, 19-15, 4-8, 18-14, 7-11, 14-10, 11-18, 23-14, 17-22, 10-7, 22-25, 7-3, 25-30, 14-9, 13-17, 9-6, 17-22, 6-2, 22-25, 2-7, 25-29, 7-10, 29-25, 3-7, 25-22, 10-15, 16-19, 15-24, 12-16, 24-19, 16-23, 27-18, 11-18, 7-11 (L) , etc. white wins, P. Morris vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(A) Nigel Proffitt has suggested that 23-18 may also win, continue: 16-20 (A-1) , 18-11, 8-15, 26-23, 1-6, 24-19, 15-24, 28-19, 4-8, 22-18, 8-11, 25-22, 9-14, 18-9, 5-14, 29-25, 7-10, 25-21, 3-7, 30-25*, etc. white wins, N. Proffitt vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.

(A-1) If 1-6, 18-11, 8-15, 26-23, 16-19, 23-16, 12-19 then 30-26 (A-1a) now 4-8, 22-18, 15-22, 24-15, 7-11, 25-18, 9-14, 18-9, 11-18, 29-25, 5-14, 26-2, 3-7, 22-15, 7-11, 31-26, 11-18, etc. will draw, by Bert Vanderpool.

(A-1a) Originally thought to correct 22-18, 15-22, 25-18 as given by Chinook to draw in the 1996 edition of the Compilation, page 16, note B-1.

(B) If 1-6 here then 29-25* (B-1) , 7-10 (B-2) (B-3) , 25-22, 9-14, 18-9, 5-14, 22-18, 14-17, 18-15, 10-19, 24-15, 3-7, 23-18, 6-9, 27-23, 17-21, 26-22, 8-11, 15-8, 4-11, 22-17, 7-10, 32-27, etc. to a probable white win, by Brian Hinkle and Chinook.

(B-1) If 24-19? then 8-11, 29-25, 7-10*, 26-22, 3-7, 30-26, 4-8, 25-21, 9-14, 18-9, 5-14, 22-18, 14-17, 21-14, 10-17, 26-22, 17-26, 31-22, 6-10, 28-24, 16-20, 22-17, 2-6, 17-13, 11-16, 18-15, 7-11, 13-9, 11-18, 23-7, 6-13, 7-2, etc. drawn, by Checkers 3.0.

(B-2) If 8-11 then 24-20!*, 9-14, 18-9, 5-14, 28-24, 3-8, 25-21, 16-19, 24-15, 11-18, 21-17, 14-21, 23-14, 12-16, 20-11, 8-15, 27-23, 15-18, 32-27, 4-8, 14-9, 6-13, 23-14, etc. to a probable white win, by Checkers 3.0.Back to Trunk

(B-3) If 16-20 then 25-21, 8-11, 30-25, etc. returns to the trunk line.

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(C) If 8-11 then 24-20, 7-10, 28-24, 10-15, 26-22, 1-6 (C-1) , 24-19, 15-24, 32-28, 9-14, 28-19, 6-9, 29-25, 3-7, 25-21, 7-10, 27-24, 2-7, 31-27, 9-13, 18-9, 5-14, 22-18, 14-17, 21-14, 10-17, 18-15, etc. white wins, by Carl Reno and Checkers 3.0.

(C-1) If 3-7 then 32-28, 7-10, 24-19, 15-24, 28-19, 1-6, 29-25, 9-14, 18-9, 6-13, 25-21, 10-14, 22-18, 13-17, 18-9, 5-14, 30-26, 2-6, 26-22, 17-26, 31-22, 4-8, 22-18, 6-10, 18-9, 11-15, 20-4, 15-31, 23-18, etc. white wins, by Carl Reno and Checkers 3.0.

(D) If 26-22? then 7-10, 24-19, 8-11, 29-25, 11-16, 18-15, 1-6, 15-11, 9-14*, 28-24, 3-8, 11-7, 2-11, 22-18, 5-9, 25-22, 11-15, 18-11, 8-15, 31-26, 14-17, 22-13, 9-14, 26-22, 14-17, 23-18, 17-26, 18-11, 16-23, 27-18, 20-27, 30-23, 27-31, 11-7, 31-26, 7-3, 26-19, 3-7, 4-8, 7-14, 19-23, 32-27, 23-32, 18-15, 12-16, 14-9, 6-10, etc. drawn, by Carl Reno and Checkers 3.0.

(E) This is the move which seems to harpoon the Shark; 24-19? instead only seems to draw, continue: 11-16, 19-15 (E-1) , 1-6, 18-14!, 9-18, 23-14, 7-10, 14-7, 3-19, 26-22, 2-7, 25-21, 5-9, 22-18, 19-23, 21-17, 9-13, 17-14, 7-11, 14-9, 6-10, 9-6, 10-15, 18-14, 13-17, 27-18, 15-22, 14-10, 17-21, 10-7, 4-8, 7-3, 22-25, 31-27, 11-15, 3-7, 25-29, 7-11, 15-19, 11-4, 29-25, 6-1, 25-22, 4-8, 22-26, 30-23, 19-26, etc. drawn!, analysis by Chinook.

(E-1) If 25-22 then 4-8*, 22-17 (E-1a) , 7-10, 17-13, 9-14, 18-9, 5-14, 13-9, 14-17, 26-22, 17-26, 31-22, 8-11, 28-24, 10-14, 22-18, 14-17, 19-15, 16-19, 15-8, 19-26!, 30-23, 17-22, etc. drawn, analysis by Chinook.Back to Trunk

(E-1a) If 19-15 then 16-19, 23-16, 12-19, etc. may draw, by Brian Hinkle.

(F) If 11-16 then 26-22, 7-10, 22-17, 9-13, 17-14, 10-17, 21-14, 13-17, 31-26, 1-6, 18-15, 6-9, 15-10, 9-18, 23-14, 4-8, 14-9, 5-14, 24-19, 16-23, 27-9, 8-11, 10-6, etc. white wins, P. Morris vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(G) If 4-8 then 21-17, 1-6, 24-19, 11-16, 26-22, 7-10, 17-13, 9-14, 18-9, 5-14, 22-18, 14-17, 31-26, 8-11, 28-24,17-21, 32-28, 3-8, 26-22, 6-9, 13-6, 2-9, 22-17, 9-13, 18-14, 13-22, 14-7, etc. white wins, by Checkers 3.0.

(H) If 9-14, 18-9, 5-14 then 24-19, 4-8, 23-18, 14-23, 27-18, 7-10, 31-27, 11-16, 26-23, 1-6, 21-17, 6-9, 17-13, 10-14, 13-6, 2-9, 19-15, 14-17, 15-10, 17-22, 10-6, 22-26, 6-2, 26-31, 2-6, 31-24, 28-19, etc. white wins, by Checkers 3.0.Back to Trunk

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(I) 21-17 instead is a visually powerful attack, but one which only seems to draw, continue: 9-13* (I-A) , 24-19 (I-B) , 13-22, 26-17, 7-10, 30-25, 4-8 (I-C) , 25-21 (I-D) , 11-16, 31-26, 6-9, 17-14, 10-17, 21-14, 2-7, 19-15, 16-19, 23-16, 12-19, 15-10, 9-13, 10-6, 7-11, 6-2, 11-16, 18-15, 13-17, 15-10, 8-12, 27-23, 20-24, 23-18, 17-21, 2-7, 21-25, 7-11, 5-9!, 11-27, 25-30, 14-5, 30-7, etc. drawn, by Checkers 3.0.

(I-A) If 7-10?? then 18-15, 11-18, 23-7, 3-10, 17-13, 9-14 (I-AA) , 24-19, 4-8, 27-23, 2-7, 19-16, 12-19, 23-16, 8-12, 31-27, 12-19, 27-24, 20-27, 32-16, 10-15, 16-12, 14-18, 12-8, 15-19, 8-3, 6-10, 3-8, 18-23, 28-24*, 19-28, 26-19, etc. white wins, G. Miller vs. D. Cayton, Star Wars Postal Tournament: Final Round.

(I-AA) If 10-15 then 24-19, 15-24, 28-19, 4-8, 19-15, 9-14, 27-23, 14-17, 23-18, 12-16, 26-22, 17-26, 31-22, 8-12, 15-10, 6-15, 18-11, etc. white wins, D. Cayton vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.

(I-B) If 17-14 then 13-17, 24-19, 11-16, 28-24, 7-10 (4-8 will also draw) , 14-7, 3-10, etc. will draw, by Nigel Proffitt.

(I-C) If 3-7?? then 25-21, 4-8, 31-26, etc. white wins, B. Vanderpool vs. P. Morris, Star Wars Postal Tournament: Final Round.

(I-D) If 31-26 then 6-9, 17-13, 9-14, 18-9, 5-14 and a draw was agreed, P. Morris vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.Back to Trunk

(J) If 7-10?? then Chinook has reported a winning result for white after the 18-15 bust-up, but no detailed play was available at press time.

(K) Left at this point with an unclear result in the 1996 edition of the Compilation, page 15, note D.

(L) The ending is very similar to Game #8 of the World Title Mail Championship Match between Richard Fortman and Jerry Childers, by Brian Hinkle.Back to Trunk

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Top of Page> //Index

11-16, 22-18, 10-15 SUGGESTED NAME: THE CHEETAH

The Cheetah remains in captivity! The Final Round of the Star Wars Postal Tournament has failed to reveal an escape route against white's strongest attacks. FLASH see variation II for Bert VanderpoolÆs important analysis. The following analysis is provided:

11-16, 22-18, 10-15, 18-11, 8-15, 24-20!* (Var. I) (A) , 9-14 (B) (C) , 20-11, 7-16, 25-22, 3-8, 23-18* (D) , 14-23, 26-10, 6-15, 21-17, 5-9 (E) , 29-25 (F) , 1-6? (Var. II) , 28-24 (G) , 6-10, 17-13 (H) , 2-6, 24-20 (1) , 15-19, 20-11, 8-15, 25-21*, 9-14 (J) , 31-26*, 14-18 (K) , 21-17*, 18-25, 30-21, 12-16, 27-23*, 19-24, 26-22, 24-27, 32-28, etc. white wins, D. Cayton vs. B. Hinkle, Star Wars Postal Tournament: Final Round.

(A) The attack which apparently immobilises the Cheetah. The 25-22 attack, once preferred by Marion Tinsley, may only allow a draw and is featured in Variation I.

(B) The 6-10 defence consumed many of our early efforts to tame this opening. The following analysis is provided: 6-10, 20-11, 7-16, 25-22, 1-6 (B-1) (B-2) , 23-18, 3-8 (D-3) , 18-11, 8-15, 22-17, 16-19, 27-24, 4-8 (B-4) , 32-27, 9-14, 17-13, 2-7 (B-5) , 29-25, 8-11 (B-6) , 25-22, 14-18, 22-17, 19-23, 26-19, 11-16, 27-23, 18-27, 17-14, 16-23, 31-26, etc. white wins, D. Cayton vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.

(B-1) If 3-7 then 23-18, 7-11, 29-25!* (a "knockout" waiting move from Elbert Lowder) , 1-6 (B-1a) , 26-23, 2-7 (B-1b) , 21-17!*, 9-13, 31-26*, 6-9, 17-14!, 10-17, 25-21, 16-19 (B-1c) , 23-16, 12-19, 21-14, 13-17, 22-6, 15-31, 27-24, 4-8, 24-15, 11-18, 6-2, 7-11, 14-10, 18-23, 10-7, etc. to a winning bridge ending for white, by Elbert Lowder and Brian Hinkle.

(B-1a) If 4-8 then 28-24*, 16-20, 26-23, 12-16, 31-26*, 2-7 (B-1aa) , 18-14, 10-17, 21-14, 9-18, 23-14, 16-19, 32-28, 8-12, 22-17, 1-6, 17-13*, etc. white wins, by Al Lyman.

(B-1aa) If 8-12 then 18-14, 10-17, 21-14, 9-18, 23-14, 16-19, 32-28, 11-16, 25-21, 1-6, 14-10, 6-9*, 21-17, 9-14, 17-13, 14-18, 10-6, 18-25, 30-21, 2-9, 13-6, etc. white wins, by Al Lyman.

(B-1b) If 4-8 then 30-26!, 9-14, 18-9, 5-14 (B-1bb) , 22-17*, 16-20, 17-13*, 11-16, 25-22*, 6-9, 13-6, 2-9, 28-24*, 16-19 (B-1bc) , 23-16, 12-28, 22-17*, 9-13, 26-23!, 13-22, 23-18, 14-23, 27-4, 22-25, 4-8, 10-14, 8-11, 25-30, 11-15, 30-25, 15-10, 14-18, 10-15, 18-22, 15-19, 25-30, 19-23, 22-25, 23-27, 25-29, 31-26, etc. white wins. by Elbert Lowder and Brian Hinkle.Back to Trunk

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(B-1bb) If 6-13 then 21-17, 16-20, 25-21, etc. white wins, by Elbert Lowder and Brian Hinkle.

(B-1bc) If 16-20 then 21-14, 15-19, 23-16, 12-19, 27-23*, 11-16, 32-27*, etc. white wins, by Elbert Lowder and Brian Hinkle.

(B-1c) If 16-20 then 21-14, 15-19, 23-16, 12-19, 27.23*, 11-16, 32-27*, etc. white wins, by Elbert Lowder and Brian Hinkle.

(B-2) If 3-8 then 27-24, 16-20, 24-19, 15-24, 28-19, 8-11, 31-27 (B-2a) , 4-8, 22-17, 11-16, 17-14, 10-17, 21-14, 9-18, 23-14, 16-23, 26-19, 8-11, 29-25, 1-6, 30-26, 11-16, 26-23, 6-9, 14-10, 9-14, 25-21, 5-9, 10-6, 9-13, 6-1, 13-17, 1-5, 17-22, 5-9, 22-26, 9-18, 26-31, 27-24, 20-27, 18-22, etc. white wins, N. Proffitt vs. G. Miller, Star Wars Postal Tournament: Final Round.

(B-2a) Or 19-16, 12-19, 23-7, 2-11, 29-25, 4-8, 21-17, 11-15, 26-23, 9-14, 25-21, 8-12, 31-27*, 15-19, 23-16, 12-19, 27-23*, 19-26, 30-23, 20-24, 23-19, etc. white wins, N. Proffitt vs. M. Long, Star Wars Postal Tournament: Final Round.

(B-3) If 15-19 then 22-17, 3-7, 17-13*, 4-8, 27-23, 9-14, 18-9, 5-14, 29-25, 8-11, 25-22, 11-15, 31-27, 7-11, 22-17, 2-7, 30-25, 16-20, 23-16, 12-19, 27-23, 19-24, 28-19, 15-24, 26-22, 11-15, 32-28, 24-27, 23-19, 15-24, 28-19, etc. white wins, B. Hinkle vs. B. Vanderpool, Star Wars Postal Tournament: Final Round.

(B-4) A formation described as a "losing Dyke, " by Brian Hinkle.

(B-5) If 5-9 then 27-23, 2-7, 23-16, 12-19, 31-27, 8-12, 29-25, 7-11, 27-23, 11-16, 21-17*, 14-21, 24-20, 19-24, 20-11, 24-27, 11-7, 27-31, 25-22, 31-27, 23-18, 15-19, 22-17, 27-31, 26-22, etc. white wins, by Bert Vanderpool.

(B-6) If 5-9 then 26-23, 19-26, 30-23, 15-19, 23-16, 12-19, 24-15, 10-19, 27-24, 19-23, 24-19, 7-11, 28-24, 23-27, 24-20, 27-32, 19-16, etc. white wins, by Bert Vanderpool.

(C) If 7-11 then 28-24 (C-1) , 6-10, 23-18, 15-22, 25-18, 1-6, 27-23, 10-15, 30-25, 15-22, 25-18, 6-10, 24-19, 3-8, 26-22, 9-14, 18-9, 5-14, 22-18, 11-15, 18-9, 15-24, 20-11, 8-15, 29-25, 4-8, 21-17, etc. white wins, B. Vanderpool vs. P. Morris, Star Wars Postal Tournament: Final Round.Back to Trunk

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(C-1) Or 25-22, 6-10, 27-24, 9-14, 22-18*, 15-22, 26-17, 5-9, 17-13, 2-6, 29-25, 3-8, 31-26, 10-15, 23-19, 16-23, 26-10, 6-15, 13-6, 1-10, 25-22, 14-18, 22-17, 18-23, 17-14, 10-17, 21-14, 15-18, 14-9, 18-22, 9-6, 22-26, 6-2, 26-31, 2-7, 11-15, 7-10, 8-11, 10-26, 31-22, 24-19, 22-17, 32-27, etc. white wins, G. Miller vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

(D) A powerful bust-up which leaves the Cheetah scrambling for cover. If 22-18?, 15-22, 26-10, 6-15, 29-25 then 16-19, 23-16, 12-19, 25-22, 8-11, 21-17, 5-9, 27-24, 4-8, 30-26, 1-6, 32-27, 2-7, 24-20, 7-10, 27-23, 19-24, 28-19, 15-24, 23-18, 24-28, 17-14!, 10-17, 22-13, 8-12, 31-27, 28-32, 26-23, 6.10!*, 13-6, 10-15, 18-14, 12-16*, 6-2, 15-19, 23-18, 32-23, 2-7, 19-24, 7-3, 23-27*, 3-7, 27-23, 7-10, 23-19, 14-9, 19-23, 18-14, 16-19, 10-7, 11-15, etc. drawn!, D. Cayton vs. M. Long, Star Wars Postal Tournament: Final Round.

(E) If 1-6 then 17-14, 2-7, 22-17*, 6-9, 30-26, 9-18, 26-23, 8-11, 23-14, 16-19, 27-24, 19-23, 24-19, 15-24, 28-19, 11-16, 19-15, 7-11, 15-8, 4-11, 14-10, 11-15, 10-7, 16-20, 7-3, 15-19, 32-28, etc. white wins, by Al Lyman.

(F) Now the recommended follow up, 28-24 instead was featured in the 1996 edition of the Compilation, may allow the Cheetah more fight for survival; for example: 28-24, 16-20 (F-1) (F-2) (F-3) , 30-26, 8-11 (F-4) , 26-23, 4-8, 29-25, 1-6, 17-14, 9-18, 23-14, 2-7 (F-5) , 22-17, 12-16 (F-6) , 31-26, 15-18, 17-13, 6-10, 14-9, 10-15, 9-6, 16-19, 6-2, 19-28, 25-21, 8-12, 13-9, 15-19, 27-24, 20-27, 32-14, 28-32, 9-6, 32-27, 6-1, 27-23, 26-22, 19-24, 22-17, 24-27, 17-13, 27-31 (F-7) , 1-6, 23-18, 13-9, 18-22, 9-5, 31-26, 6-9, and now 22-17* by Jerry Lattimer draws and corrects 22-25? to a white win, as shown in the June 1995 issue of the ACFB, page 7, note C.Back to Trunk

(F-1) If 8-11 then 24-20*, 16-19, 30-26 (F-1a) , 1-6 (F-1b) , 29-25, 4-8, 25-21, 9-13 (F-1c) , 17-14, 15-18, 22-15, 11-18, 26-23, 19-26, 31-15, 6-10, 14-7, 2-18, 27-23, 18-27, 32-23, 8-11, 23-19, etc. white wins, D. Cayton vs. D. Smithson, Star Wars Postal Tournament: Round 1.

(F-1a) Or 29-25, 4-8, 25-21!, 2-7, 30-26*, 19-24, 26-23*, 15-19 (if 9-13 then 23-18, etc. white wins) , 23-16, 12-19, 22-18*, 19-23, 17-14, 9-13, 32-28!*, 23-32, 28-19, 32-28, 19-15*, 1-6, 31-26!*, 13-17, 26-23, 28-24, 14-9, 6-13, 21-14, 24-27, 23-19!*, 27-23, 15-10, etc. white wins, by Al Lyman.

(F-1b) If 2-7 then 29-25, 19-24, 25-21, 24-28, 17-13*, 9-14, 26-23*, 15-19, 23-16, 12-19, 22-17, 7-10, 13-9, 19-23, 27-18, 14-23, 9-6, 10-15, 6-2, 4-8, 17-14, 15-18, etc. white wins, by Al Lyman.

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(F-1c) If 6-10 then 27-23*, 2-7, 23-16, 12-19, 22-18, 15-22, 17-13, 22-25, 13-6, 8-12, 6-2, 25-29, 2-6, 10-15, 21-17, 29-25, 17-14, 25-21 (if 12-16 then 32-27 wins) , 32-28, etc. white wins, by Al Lyman.

(F-2) If 1-6 then 17-13* (F-2a) , 16-19, 24-20, 9-14, 20-16, 19-24, 27-20, 12-19 and 29-25*, etc. was suggested to win by Al Lyman.Back to Trunk

(F-2a) If 24-20? then 15-19, 20-11, 8-15, 30-25, 4-8 (F-2aa) , 22-18, 15-22, 25-18, 6-10, 17-13, 19-23, 13-6, 2-9, 18-15, 10-19, 27-18, 8-11, 29-25, 19-23, 25-21, 12-16, 21-17, 9-13, 17-14, 16-19, 14-10, 11-16, 10-7, 16-20, 32-28, 13-17, 18-14, 17-22, etc. drawn, M. Long vs. D. Cayton, Star Wars Postal Tournament: Final Round.

(F-2aa) Or 6-10, 17-13, 10-14*, 13-6, 2-9, 22-18, 15-22, 25-18, 14-23, 27-18, 19-23, 18-15, 9-14, etc. drawn, by Ronnie Winton.

(F-3) If 2-6 then 24-20, 15-19, 20-11, 8-15, 30-25, 6-10, 17-13, 1-6, 22-18, 15-22, 25-18, 4-8, 29-25, 8-11 (F-3a) (F-3b) , 31-26, 11-16, 25-21, 19-23, 26-19, 16-23, 18-15, 10-19, 27-18, 19-23, 21-17, 23-26, 17-14, 26-30, 14-5, 6-10, 5-1, etc. white wins, by Dennis Cayton.

(F-3a) If 12-16 then 25-21, 10-14 (F-3aa) , 18-15, 19-23 (F-3ab) , 27-18, 14-23, 21-17, 16-20, 31-27!*, 23-26, 17-14, 9-18, 27-24, 20-27, 32-14, etc. white wins, by Dennis Cayton.

(F-3aa) If 16-20 then 31-26!, 19-24, 27-23, 8-11 or 8-12, 32-28, etc. white wins, by Dennis Cayton.

(F-3ab) If 14-18 then 21-17, 18-22, 15-10, etc. white wins, by Dennis Cayton. (F-3b) If 19-23 then 27-24, 8-11, 24-19, 11-16, 25-21, 10-14, 19-15, etc. white wins, by Dennis Cayton.Back to Trunk

(F-4) If 2-6 then 29-25, 6-10, 17-14, 10-17, 22-6, 1-10, 25-21, 10-14, 26-23, 8-11, 23-19, 15-18, 31-26, 11-16, 19-15, 16-19, 32-28, 19-23, 26-19, 18-22, 15-11, 14-18, 11-8, 4-11, 19-16, 12-19, 24-8, etc. white wins, D. Cayton vs. P. Morris, Star Wars Postal Tournament: Final Round.

(F-5) If 15-18, 22-15, 11-18 then 24-19*, 2-7, 27-24, 20-27, 32-23*, 18-27, 31-24, etc. white wins, by Al Lyman.

(F-6) If 15-18 then 24-19*, 11-16, 19-15, etc. white wins, by Al Lyman.

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(F-7) If 23-19 then 1-6, 19-15, 13-9, 27-31, 9-5, 15-18, 6-9, 31-26, 5-1, etc. white wins, by Al Lyman.

(G) Or 17-13, 2-7, 28-24, 16-19 (G-1) (G-2) , 24-20, 8-11, 30-26, 9-14, 25-21, 14-18, 22-17, 18-22, 27-23*, 22-25, 23-16, 12-19, 17-14, 25-29, 14-9, 6-10, 9-6, 10-14, 6-2, 14-18, 20-16, 11-20, 2-11, 29-25, 11-16, 18-23, 31-27!, 23-26, 16-23, etc. to an "elegant white win", as featured in the ACFB, December 1996 - page 13, by Al Lyman.Back to Trunk

(G-1) If 16-20 then 31-26*, 7-10 (G-1a) , 26-23*, 8-11, 25-21, 9-14, 23-18*, 14-23, 27-18, 20-27, 32-23, 12-16, 21-17*, 15-19, 18-14, 19-16, 14-7, 26-31, 7-3, etc. white wins, by Al Lyman.

(G-1a) 12-16*, 26-23, 8-11*, 25-21, 4-8*, 23-18, 7-10*, 21-17, 8-12*, 32-28, 16-19*, 17-14, 10-26, 30-7, 15-22, 7-2, 22-26, 24-19, 26-30, 19-15, 30-26, 15-11, 26-22, 11-8, 22-18, 8-3, 12-16, 3-7, 16-19 drawn, by Bert Vanderpool.

(G-2) 7-10 instead runs back into the Trunk Line.

(H) 25-21 instead may also win, continue: 2-6, 32-28, 9-14, 17-13, 16-19, 30-26, 14-18, 22-17, 18-22, 17-14, 10-17, 21-14, 22-25, 26-22, 25-30, 14-9, 30-26, 9-2, 26-17, 2-7, 17-14, 31-26, 12-16, 13-9, 14-5, 7-11, etc. white wins, D. Cayton vs. N. Proffitt, Star Wars Postal Tournament: Final Round.

(I) Al Lyman presented an alternate win with 32-28 in the April 1997 issue of the ACFB, page 9: 32-28, 16-20 (1-A) , 24-19*, 15-24, 28-19, 8-11, 22-18*, 11-16, 27-23*, 20-24, 25-21, 24-28 (if 16-20 then 30-25* wins) , 21-17, 28-32, 30-25, 32-28, 31-27*, etc. white wins.

(I-A) If 9-14 then 25-21, 16-19, 31-26, 14-18, 21-17, 18-25, 30-21, 15-18, 24-15, 10-19, 17-14, 8-11, 27-24, 11-15, 24-20, 4-8, 20-16, 6-10, 14-7, 8-11, 7-2, 11-20, 2-7, 20-24, 7-10, etc. white wins, by Al Lyman.

(J) If 12-16 then 31-26, 9-14, 27-23, 4-8, 32-27, 8-12, 30-25, 16-20, 23-16, 12-19, 27-23, 19-24, 23-19, 24-27, 26-23!, 15-24, 22-18, etc. white wins, by Dennis Cayton.

(K) If 4-8 then 21-17!, 14-21, 30-25, 21-30, 22-17, 30-23, 27-4, 19-23, 4-8, 23-26, 8-3!* (not 8-11? which allows the 12-16!* pitch to draw) , 10-15, 3-7, 15-18, 17-14, 6-10, 14-9, etc. white wins, by Al Lyman.Back to Trunk

Variation I:
The preceding play may offer compelling evidence that the 24-20!* attack is a solid win. The following play on the 25-22 attack is presented in case a draw is later found against this attack. Although Marion Tinsley favoured the 25-22 attack, black appears to survive the following continuation: 9-14 (A) , 29-25 (B) (C) , 6-10, 23-18, 14-23, 27-11, 3-8, 26-23, 8-15, 24-19, 15-24, 28-19, 4-8, 21-17, 8-11, 22-18, 16-20, 31-27, 11-15, 18-11, 7-16, etc. drawn, analysis by Chinook.

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(A) If 16-20 then 23-18, 3-8 (A-1) , 18-11, 8-15, 24-19, 15-24, 28-19, 4-8, 22-18, 9-14, 18-9, 5-14, 29-25, 8-11, 25-22, 6-10, 27-23, 20-24, 22-17, 1-6 (if 24-28 then 31-27 wins) , 26-22, 24-28, 31-26, 11-15 (if 6-9 then 17-13, 11-15, 13-6, 15-24, 6-1, etc. white wins) , 19-16, 12-19, 23-16, 14-18 (if 7-11, 16-7, 2-11 then 26-23, 11-16, 30-26, 16-20, 17-13, 20-24, 22-17, 15-18, 23-19, etc. white wins) , 30-25, 7-11, 16-7, 2-11, 32-27!, etc. white wins, by Marion Tinsley.

(A-1) If 7-11 then 21-17, 3-7, 17-14, 11-16, 18-11, 9-25, 29-22, 5-9, 22-18, 9-14, 18-9, 6-13, 26-22, 1-6, 22-18, 13-17, 31-26, 6-10, 18-14, 10-15, 14-9, 16-19, 9-5, 7-16, 5-1, 15-18, 24-15, 18-22, 26-23, etc, white wins, C. Marshall vs. D. Cayton, Star Wars Postal Tournament: Round 1.

(B) If 24-20 then 3-8 (B-1) , 20-11, 7-16, 23-18 (B-2) , etc. transposes into the trunk play from the 24-20! attack. (B-1) For the reason stated above, play 14-18!, 20-11, 18-25, 29-22, 7-16, etc. instead, which seems to draw. Notice that this fine defensive innovation is not available from the immediate 24-20! attack, by Brian Hinkle and Al Lyman.

(B-2) If 22-17 then 6-10, 29-25, l6-19*, 23-16, 12-19, 25-22 (B-3) , 8-12, 17-13, 4-8* (B-4) , 22-17, 8-11, 27-24, 1-6 (B-5) , 32-27, 2-7, 30-25, 5-9*, 25-22, 19-23*, 26-19, 11-16, 27-23, 16-20, 22-18, 15-22, 19-15, 20-27, 31-24, 10-26, 17-1, 9-14, 1-6, 14-18, 6-2, 7-11, 2-7, 11-16, 7-10, 26-31, 13-9, 31-27, 24-20, 16-19, 10-15, 27-24, 9-6, 18-23, 6-2, 23-27, 2-7, 23-26, 7-11, 26-31, 21-17, 27-32, etc. and black can draw, by Jack Cox - from Ryan's Modern Encyclopedia of Checkers, page 165, note B.Back to Var-1
Back to Trunk
Top of Page
Index

THE BLACK HOLE

This chapter presents play on those barred openings currently suspected to be untenable:
9-13, 21-17, 10-14
9-13, 23-18, 10-14
9-13, 24-19, 10-15
9-13, 24-20, 12-16
9-14, 22-18, 12-16
9-14, 22-18, 14-17
9-14, 24-19, 10-15
10-14, 24-19, 11-15
10-15, 21-17, 9-14
0-15, 22-17, 9-14
10-15, 24-20, 11-16
11-15, 21-17, 10-14
11-16, 24-19, 10-15
12-16, 23-18, 9-14
12-16, 23-19, 16-23

Can any of the openings listed above be rescued from the Black Hole and beam up to the Next Generation of the Three-Move Openings?

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9-13, 21-17, 10-14: This opening is currently rated as a loss. Following the exchange with 17-10 and either the 6-15 or the 7-14 jump, white appears to have a number of potentially winning attacks. The following analysis presents what is judged to be one winning attack against both of the aforementioned jumps.

9-13, 21-17, 10-14, 17-10, 7-14 (A) (B) , 25-21 (C) , 6-10 (D) , 22-18, 11-15, 18-9, 5-14, 29-25, 8-11, 25-22, 3-8 (E) , 24-20, 2-6, 27-24, 15-18, 22-15, 11-27, 32-23, 8-11, 24-19, 11-15, 30-25, 15-24, 28-19, 10-15, 19-10, 6-15, 25-22, 15-19, 23-16, 12-19, 22-17, 13-22, 26-10, etc. white wins, analysis by Checkers 3.0 and Carl Reno.

(A) Jim Loy has presented this defense for examination on his web pages: http://www.mcn.net/~jimloy/loss.html. Players with computer access may wish to visit these pages periodically to keep informed of the latest developments.

(B) If 6-15 then 24-20 (B-1) , 7-10 (B-2) , 28-24, 1-6, 23-18, 3-7, 25-21, 5-9, 21-17, 9-14, 18-9, 15-18, 22-15, 13-22, 26-17, 6-22, 15-6, 2-9, 24-19, 7-10, 32-28, 10-14, 27-23, 11-16, 20-11, 8-24, 28-19, 9-13, 30-25, 22-26, 31-22, 14-17, 22-18, 17-21, 25-22, 21-25, 18-14, 25-30, 14-10, 30-26, 22-18, 26-22, 18-15, etc. white wins, analysis by Herschel Smith and his ôcloneö of the Chinook computer.

(B-1) 25-21? instead is not a viable winning attack, as this setting transposes directly into the Black Hole: 10-14, 22-17, 9-13, 17-10, 6-15, 25-22 same.

(B-2) See the Appendix for Herschel Smith's computer-generated winning attacks against 1-6, 5-9, 11-16, 12-16, and 15-19.

(C) Another transposition from the Black Hole should be noted: 10-14, 22-17, 9-13, 17-10, 7-14??, 25-22 same.

(D) If 11-15 then 22-17, 13-22, 26-10, 2-7, 29-25, 7-14, 25-22, 6-10 (D-1) , 22-17, 5-9, 17-13, 3-7, 13-6, 14-18, 23-14, 10-17, 21-14, 1-17, 27-23, 7-10, 24-20, 10-14, 28-24* (20-16? allows a draw) , 28-24, 15-18, 24-19, 18-27, 32-23, 17-22, 19-15, 14-17, 15-10, 17-21, 10-7, 22-25, 7-2, 25-29, 2-6, 29-25, 31-26, 25-29, etc. white wins, by Checkers 3.0 and Carl Reno.

(D-1) If 8-11 then 22-17, 6-10, 23-19, 4-8, 30-26, 3-7, 27-23, 5-9, 26-22, 9-13, 31-27, 15-18, 22-6, 1-10, 23-18, 14-23, 27-18, 13-22, 24-20, 22-26, 28-24, 26-31, 32-28, etc. white wins, by Checkers 3.0.

(E) If 1-5 (by Jim Loy) then 23-18, 14-23, 27-18, 12-16 (E-1) , 18-14, 10-17, 21-14, 16-20, 24-19, 15-24, 28-19, 2-6, 26-23, etc. white wins, by Checkers 3.0.

(E-1) If 5-9 then 26-23, 3-7, 23-19, 11-16, 18-11, 16-23, 24-20, 7-16, 20-11, 12-16, 31-26, 16-19, 28-24, 19-28, 26-19, 9-14, 30-26, etc. white wins, by Checkers 3.0.

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9-13, 23-18, 10-14: Although similar to 9-13, 22-18, 10-14 (ACF #4-A) , the prospects for this opening remain unfavorable. We have yet to construct a sound defensive strategy against the 27-23* attack shown in PART I below.

PART I: THE 27-23 ATTACK:
9-13, 23-18, 10-14, 18-9, 5-14, 27-23* (A) , 7-10 (B) (C) , 22-18 (24-19 runs into Part II) , 6-9, 25-22, 3-7 (D) (E) (F) , 24-20 (G) , 1-5 (H) , 30-25, 11-16, 20-11, 8-15, 18-11, 7-16, 28-24, 2-7, 22-17, 13-22, 26-17, 14-18, 23-14, 9-18, 17-14, 10-17, 21-14, etc. white wins, by Checkers 3.0.

(A) The alternate 24-19? attack only seems to draw and is treated in PART II; and 26-23? results in the same setting as the primary attack of ACF #4-A: 9-13, 22-18, 10-14, 18-9, 5-14, 26-22 same.

(B) If 11-16 then 32-27 (B-1) , 6-9 (B-2) , 24-20, 7-10, 20-11, 8-15, 28-24, 3-7, 22-17, 13-22, 25-11, 7-16, 24-20, 16-19, 23-16, 12-19, 20-16, etc. white wins, by Brian Hinkle and Chinook.

(B-1) 24-19? is inferior, continue: 8-11, 22-18, 6-9, 25-22, 7-10, 22-17, 13-22, 26-17, 3-8, 17-13, 11-15, 18-11, 8-24, 13-6, 2-9, 28-19, 4-8, 29-25, 8-11, 25-22, 16-20, 22-18, 20-24, 30-25, 11-16, 18-15, 16-20, 15-6, 1-10, 31-26, 24-28, 25-22, 20-24, 22-18, 24-27, 18-15, 27-31, 15-6, 31-22, 6-1, 22-18, 1-6, etc. finely drawn, P. Morris vs. N. Proffitt, Star Wars Postal Tournament: Round 1.

(B-2) If 7-10 then 22-18, 6-9, 18-15, 10-19, 24-15, 2-7, 25-22, 16-19, 23-16, 12-19, 30-25*, 14-18, 21-17*, etc. white wins, A. Cook vs. N. Proffitt, The Starship Ladder.

(C) If 6-9 then 22-17, 13-22, 26-10, 7-14, 25-22 results in a perfect transposition into Al Lyman's ôThe Rattlesnakeö, page 24, as follows: 9-14, 23-19, 10-15, 19-10, 6-15, 22-18, 14-23, 26-10, 7-14, 27-23, 5-9, 25-22 same. The trunk line continues as follows: 11-16, 24-19, 1-5 (C-1) , 22-18, 8-11, 29-25, 3-7, 28-24!*, 16-20, 25-22*, 20-27, 31-24, 7-10, 24-20*, 4-8, 32-27, 2-7, 27-24, 9-13, 18-9, 5-14, 22-18 white wins, by Al Lyman.

(C-1) If 3-7 then 22-17 (22-18 also wins, as shown by Al Lyman in ôThe Rattlesnakeö, page 24, note D) , 7-10, 17-13, 2-7, 13-6, 14-18, 23-14, 10-17, 21-14, 1-17, 19-15, 8-11, 15-8, 4-11, 29-25, etc. white wins, B. Vanderpool vs. N. Proffitt, Star Wars Postal Tournament: Round 1.

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(D) If 1-5 then 24-20, 11-15, 18-11, 8-15, 31-27, 3-8, 28-24, 8-11, 29-25, etc. white wins, by Checkers 3.0.

(E) If 11-15, 18-11, 8-15 then 30-25, 3-8, 24-20, 8-11, 20-16, 12-19, 23-7, 2-11, 28-24, 4-8, 26-23, 1-6, 23-19, 8-12, 32-27*, etc. white wins, D. Cayton vs. N. Proffitt, Star Wars Postal Tournament: Round 1.

(F) If 11-16 then 18-15, 10-19, 24-15, 8-11, 15-8, 4-11, 28-24, 2-7, 24-19, 16-20, 31-27, 11-16, 29-25, 7-10, 22-18, etc. white wins, D. Smithson vs. N. Proffitt, Star Wars Postal Tournament: Round 1.

(G) Improves previous efforts with 24-19 and 29-25, both of which led to drawn results. However, Nigel Proffitt has suggested that 32-27 also wins when it is followed up with 24-19.

(H) If 11-15, 18-11, 8-15 then 20-16, 12-19, 23-16, 1-5, 29-25, etc. white wins, by Brian Hinkle.

PART II THE 24-19 ATTACK:
The following play reveals that white wins with the immediate 24-19 attack are elusive when black responds with stout defenses. Our current verdict is that this attack only draws when met with correct defensive execution.

9-13, 23-18, 10-14, 18-9, 5-14, 24-19?, 7-10, 27-23, 7-10 (A) , 32-27 (B) (C) , 1-5 (D) , 22-17 (E) , 13-22, 25-9, 5-14, 29-25, 11-15, 25-22, 15-24, 28-19, 7-11, 22-18, 11-15, 18-9, 15-24, 27-20, 6-13, 26-22, 10-15, 31-27, 2-7, 21-17, 15-19, 23-16, 12-19, 27-23, 19-26, 30-23, 7-10, 20-16, etc. drawn, N. Proffitt vs. P. Morris, Star Wars Postal Tournament: Round 1.

(A) If 1-5?? then 22-18, 3-7, 18-9, 5-14, 25-22, 6-9, 28-24, 11-15, 30-25, 8-11, 32-28, 11-16, 24-20, 15-24, 28-19, etc. white wins, C. Marshall vs. D. Cayton, Star Wars Postal Tournament: Round 1.

(B) If 22-17, 13-22, 25-9, 6-13, 29-25 then 11-15, 25-22, 15-24, 28-19, 8-11, 22-18, 13-17*, 21-14, 10-17, 18-14, 11-16*, 26-22, 17-26, 31-22, 4-8, 22-18, 16-20, 32-27, 1-6, etc. drawn, N. Proffitt vs. D. Smithson, Star Wars Postal Tournament: Round 1.

(C) If 22-18 then 6-9, 25-22, 1-5, 28-24 (C-1) , 11-15, 18-11, 8-15, 30-25, 7-11 (C-2) , 22-18, 15-22, 25-18, 13-17, 26-22, 17-26, 31-22, 2-7, 24-20, 9-13, 18-9, 5-14, 22-18, 14-17, 21-14, 10-17, 18-14, 17-22, etc. drawn, by Checkers 3.0.

(C-1) If 29-25 then 11-15, 18-11, 8-24, 28-19, 14-17, 21-14, 9-27, 32-23, 4-8, 23-18, 2-6*, 31-27, etc. drawn, N. Proffitt vs. B. Vanderpool, Star Wars Postal Tournament: Round 1.

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(C-2) If 14-17??, 21-14, 9-27, 32-23, 7-11 then 22-18, 15-22, 26-17, 13-22, 25-18, 4-8 (C-2a) , 24-20, etc. white wins, W. Schumann vs. D. Cayton, Star Wars Postal Tournament: Round 1.

(C-2a) If 10-14, 18-9, 5-14 then 29-25!* will win, by Brian Hinkle.

(D) 11-15 may also draw, continue: 22-18, 15-22, 25-9, 1-5, 29-25, 5-14, 25-22, 8-11, 22-18, 14-17, 21-14, 10-17, 28-24, 17-22, 26-17, 13-22, 18-14, 11-16, 14-10, 7-14, 24-20, 14-17, 20-11, 17-21, 23-18, 6-9, 19-15, 22-25, 11-8, 4-11, 15-8, 25-29, 8-3, 29-25, 18-15, 25-22, 15-11, 22-17, 3-8, 17-14, 11-7, 2-11, 8-15, 12-16, 27-23, 14-17, 15-18, 17-14, 18-22, 14-10, 31-27, 10-14, etc. finely drawn, P. Morris vs. D. Cayton, Star Wars Postal Tournament: Round 1.

(E) The 22-18 attack may also fail to score, continue: 11-16, 18-9, 5-14, 27-24, 7-11, 26-22, 16-20, 31-27, 6-9, 22-18, 13-17, 25-22* (E-1) , 17-26, 19-16, 12-19, 24-6, 11-16, 18-15, 16-19, 23-16, 8-12, 30-23, 12-26, 6-1, 9-13, 1-5, 14-18!, etc. drawn! An unusual game worthy of further study. Did white miss winning play? Analysis is invited! N. Proffitt vs. D. Cayton, Star Wars Postal Tournament: Round 1.

Author's Comments: This is one opening which I feel is deserving of a second look. Its companion opening 9-13, 22-18, 10-14 (The Inferno) is now assessed as being fully sound. It is astonishing to me that the difference between moving the checker on square #22 vs. #23 at only the second move results in an entirely different outcome.

Are we overlooking a sound and drawable defense against the 22-18 attack treated in PART I? Are we overlooking a winning attack against the 24-19 attack treated in Part II? Or are our conclusions already sound?

We invite all analysts and players to explore these questions and share their findings with us. Will the gates of The Inferno II be soon opening behind us? Or will this opening remain forever banished to its lake of fire?

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9-13, 24-19, 10-15: this opening bears a strong resemblance to ACF #15-A (9-13, 23-19, 10-15) , which has been tamed in recent Inter District Mail Tournaments since 1989. The key difference is that the exchange leaves a white piece stationed on square #23 instead of square #24.

This difference appears to be substantial; after 19-10, 6-15, then 21-17! by Brian Hinkle appears to be a winning attack, continue: 1-6 (A) (B) , 17-14, 15-18 (C) , 22-15, 11-18, 26-22!, 12-16 (the 7-11 exchange defense instead was examined by both Brian Hinkle and Al Lyman. However, a black draw did not materialize) , 22-15, 7-10, 14-7, 3-26, 30-23, 6-10, 25-21, etc. to a position confirmed by Chinook as a white win.

After 25-21, then one possible continuation is 8-11, 29-25, 2-7, 25-22 (the 28-24 attack should also win) , 16-19, 23-16, 11-20, 27-23, 4-8, 23-19, 8-11 (if 8-12 then 32-27, etc. white wins) , 22-18, 10-14, 18-9, 5-14, 31-27, 13-17, 19-16, etc. white wins, by Paul Morris.

(A) If 7-10 then 17-14, 10-17, 25-21, 1-6, 21-14, 15-18, 22-15, 11-18, 29-25, 8-11, 23-19, 3-7, 19-15, 11-16, 26-22!, 16-19, 27-24 and now 19-23 loses by 24-20 and 4-8 loses by 31-27, analysis by Al Lyman.

(B) If 5-9 then 17-14, 9-18, 23-14, 11-16 (B-1) , 22-18, 15-22, 25-18, 13-17, 29-25, 17-21, 25-22, 8-11, 28-24, 16-20, 26-23, 1-6, 24-19, 11-16, 32-28, 3-8, 28-24, 6-10, 14-9, 7-11, 9-5, 11-15, 18-11, 8-15, 5-1, 4-8, 1-5, 2-6, 5-1, white wins, P. Morris vs. N. Proffitt, Star Wars Postal Tournament: Round 1.

(B-1) If 12-16 then 28-24, 7-10 (B-2) (B-3) , 14-7, 3-10, 24-20, 16-19, 27-23, 19-24, 25-21, etc. should win for white, by Nigel Proffitt.

(B-2) If 16-19 then 32-28*, 1-5, 25-21, etc. should win for white, by Nigel Proffitt.

(B-3) If 15-18, 22-15, 11-18 instead then Brian Hinkle has suggested 24-20 to win for white.

(C) If 15-19, 23-16, 12-19 then 25-21, 6-10, 22-18, 10-17, 21-14, 11-15, 18-11, 8-15, 29-25, 4-8, 25-22, 7-10, 14-7, 3-10, 27-24, etc. white wins, by Brian Hinkle and Chinook.

COMMENT: A sound black defense against Brian Hinkle's 21-17! attack has yet to emerge. Are we overlooking something?

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9-13, 24-20, 12-16: one of the two barred openings which does not involve an immediate exchange, continue: 28-24, 8-12, 24-19* (22-18? transposes into standard play from the 9-13, 22-18, 12-16 opening) , 11-15, 20-11, 7-16, 23-18, 16-23 (A) , 18-11, 3-7, 27-18, 7-16, 18-14, 10-17, 21-14, 16-19, 14-10, 6-15, 22-17, 13-22, 25-11, 5-9, 29-25, 1-6 and 25-21 seals the win, correcting 25-22? to a drawn result as given in the 1995 edition of this Compilation, by Brian Hinkle.Back to Openings that may lose Index|Top of Page|Main Index

(A) The 15-24 jump leads to a similar fate, continue: 27-11, 3-7, 18-14, 10-17, 21-14, 7-16, 14-10, 6-15, 22-17, 13-22, 25-11, 1-6, 29-25, 5-9, 26-22, 9-13, 22-18, 6-10, and 25-21!, etc. leads to a white win, correcting 25-22? to a drawn result as given in the 1995 edition of this Compilation, by Brian Hinkle.

9-14, 22-18, 12-16:after 18-9, 6-13 then 23-18! (A) , etc. white wins. This attack transposes directly into 12-16, 23-18, 9-14, 18-9, 6-13, 22-18 same. See the section on that opening for what we believe to be comprehensive evidence for a solid white win.

(A) Furthermore, white seems to have an alternate winning attack with 24-20, continue: 11-15, 20-11, 7-16, - 23-19, 16-23, 27-11, 8-15, 28-24! (21-17?, 13-22, 25-11, 3-8, etc. seems to draw) , 3-8 (A-1) , 24-20, 15-19, 20-16, 8-11, 16-7, 2-11, 25-22, 4-8, 22-18, etc. white wins, analysis by Checkers 3.0.

(A-1) If 10-14 then 26-22, 1-6, 30-26, 6-10, 26-23, 3-8, 24-20, 8-11, 32-27, 5-9, 20-16, 11-20, 22-17, 13-22, 25-11, 10-15, 31-26, 9-13, 26-22, etc. white wins, analysis by Checkers 3.0.

9-14, 22-18, 14-17: This opening has been appropriately named Pluto by Brian Hinkle. After the 21-14, 10-17 exchange, it would appear that white can win via "automatic pilot". Caution: the white advantage can vanish in the "twinkle of an eye" if care is not taken.

Following the exchange, the 25-21 attack is favored by both Brian Hinkle and Chinook, continue: 6-10, 21-14, 10-17, 24-19, 17-21, 29-25, 1-6, 25-22, 6-10, 28-24, 11-15, 18-11, 7-16, 22-17, 5-9, 17-13, 10-14, 13-6, 2-9, 26-22, 9-13, 22-18, etc. white wins, analysis by Chinook.

Pluto may derive its best use as an entertaining "handicap" opening.

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9-14, 24-19, 10-15: although the Rattlesnake II has been suggested as a name for this opening, it may not survive. After 19-10, 6-15, and 22-18 (A) , 15-22, 26-10, 7-14, then 25-22 (B) launches a powerful attack upon black's double-corner. With proper execution, black's defensive formation appears to self-destruct.

(A) The previous edition to this Compilation mentioned 23-18, 14-23, 26-10, 7-14, 22-17, etc. as another powerful attack, but continue: 5-9* (A-1) , 17-10, 2-6*, 21-17, 6-15, 30-2, 3-7, 28-24, 12-16, 25-22, 15-19, 24-15, 11-25, 29-22, 7-10, 26-23, 8-12, 23-18, 4-8, 27-24, 8-11, 17-13, 10-14, 13-6, 14-23, 6-2, 23-26, 22-17, 26-30, 17-14, 30-25, 14-10, 25-22, 10-7, 11-15, 24-20, 16-19, 20-l6, 15-18, 7-3, etc. drawn, analysis by Herschel Smith's Chinook ôcloneö.

(A-1) Both 2-6 and 2-7 have lost repeatedly in matches on the Starship Ladder.

(B) 27-24 instead results in a perfect transposition into the regular Rattlesnake opening: 9-14, 23-19, 10-15, 19-10, 6-15, 22-18, 15-22, 26-10, 7-14, 27-23 same.

Can the Snake charmers extract a draw from the fangs of this creature?

10-14, 24-19, 11-15: after the 19-10, 6-15 exchange, white appears to have a wide choice of powerful attacks. However, the simple 22-17 attack is the only one shown to win so far.

10-14, 24-19, 11-15, 19-10, 6-15, 22-17! (A) , 7-10 (B) , 17-13, 1-6, 25-22, 3-7, 22-17, 12-16? 28-24, 14-18 (C) , 23-14, 9-18, 24-20, 8-11, 26-23, 4-8, 23-14 , 8-12, 30-26, 16-19, 32-28, 19-24, 28-19, 15-24, 26-23, 12-16, 23-18, 16-19, 27-23, 19-26, 31-22, 24-27, 29-25, etc. white wins, by Brian Hinkle.

(A) The 22-18 "bust-up" attack only draws! After 22-18, 15-22, 26-10, 7-14, 25-22 then 1-6*, 22-18 (A-1) , 6-10*, 29-25, 10-15, 18-11, 8-15, 23-19, 15-24, 28-19, 3-7, 25-22, 7-10, 32-28, 4-8, 27-24, etc. drawn, G. Miller vs. B. Hinkle, Star Wars Postal Tournament: Round 1.

(A-1) If 28-24 then 3-7, 29-25, 6-10, 31-26, 8-11, 22-18, 11-16, 26-22, 7-11, 24-20, 4-8, 27-24, 10-15, 24-19, 15-24, 22-17, 24-27, 17-10, 9-14, 18-9, 5-14, 25-22? 27-31, 22-17, 31-26, 32-27, 26-19, 27-23, 19-26, 30-23, 14-18, 23-14, 16-19, 14-9, 19-23, 17-13, 23-26, 9-6, 2-9, 13-6, 26-31, etc. drawn, analysis by Herschel Smith's Chinook ôcloneö.Back to Openings that may lose Index|Top of Page|Main Index

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(B) The awkward 2-6, 17-10, 7-14 defense puts up some resistance, but ultimately fails, continue: 28-24, 8-11, 23-19 (B-1) , 14-18 (3-2) , 19-10, 6-15, 21-17, 12-16, 17-13, 16-19, 13-6, 1-10, 27-23, 19-28, 23-7, 3-10, 25-22, 5-9, 29-25, 4-8, 22-17, 9-13, 25-21, 13-22, 26-17, 15-19, 17-14, 10-17, 21-14, etc. white wins, analysis by Herschel Smith's Chinook "clone."

(B-1) Or 26-22, 4-8, 22-18, 15-22, 25-18, 6-10, 29-25, 11-16, 25-33, 16-20, 24-19, 8-11, 31-26, etc. white wins, analysis by Checkers 3.0.

(B-2) If 4-8, 19-10, 6-15 then 24-20, 3-7, 25-22, 15-18, 22-15, 11-18, 27-24, 1-6, 24-19, 9-13, 29-25, 5-9, 26-23*, 18-27, 32-23, 8-11, 25-22, 7-10, 22-18, 13-17, 30-26 white wins, D. Cayton vs. P. Herzog, The Starship Ladder.

(C) If 16-20 then 23-19, 8-11, 19-16, 14-18, 26-23 white wins, G. Miller vs. M. Long, Star Wars Postal Tournament: Round 1.

10-15, 21-17, 9-14: after 17-10, 7-14 then 25-21 transposes into the next opening: 10-15, 22-17, 9-14, 17-10, 7-14, 25-22 same. Because this opening is presented as a very probable loss, the 10-15, 21-17, 9-14 opening should not merit any further investigation unless a drawable defense from the 10-15, 22-17, 9-14 opening is discovered. Otherwise it appears that the 10-15, 21-17, 9-14 will be permanently exiled to the "Black Hole".

10-15, 22-17, 9-14: forms the Nutcracker opening, which was the subject of much controversy during the 1930's. See: A History Of The Barred Openings Part II, in Keystone Checker Review, January 1994 for details.

Several pages of analysis devoted to this opening were provided in Denvir's Three-Move Guide, pages 16-24. Emphasis was placed upon the 25-22 attack with the 6-10 defense, with the conclusion that this opening was sound. The alternate 11-16 defense was demonstrated to be a loss.

However William F. Ryan published new analysis to knock out the 6-10 defense in the January 1938 issue of Our Checker Player, pages 162-163. We have labored diligently to upset Ryan's analysis, but to no avail. The trunk line of Ryan's winning attack is shown below.

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10-15, 22-17, 9-14, 17-10, 7-14, 25-22, 6-10, 24-20, 3-7 (A) , 28-24, 5-9 (B) , 22-17, 11-16, 20-11, 7-16, 24-20, 9-13, 20-11, 13-22, 26-17, 15-19, 23-16, 12-19, 11-7!, 2-11, l7-13*, 1-6, 29-25*, 8-12, 25-22*, 11-15, 31-26* (C) , 14-18, 21-17*, 18-25, 30-21, 12-16, 27-23*, 19-24, 26-22*, 24-27, 32-28*, etc. white wins, by William F. Ryan.
(A) If 1-6 then 22-17, 12-16 (6-9 instead runs into note B) , 29-25, 8-12, 25-22* (A-1) , 3-7, 23-18, 14-23, 27-18, 16-19, 17-13, 12-16, 32-27, 4-8, 27-24, 5-9, 21-17, 8-12, 30-25, 19-23, 26-19, 16-23, 18-14, 9-18, 24-19, 15-24, 22-8, 7-11, 28-19, 11-15, 17-14, 15-24, 14-7, 2-11, 8-3, 6-10, 3-8, 11-15, 8-11, 15-18, 13-9* (A-2) , 23-27 (A-3) , 11-7, 10-15, 7-10, 15-19, 10-15, 18-23, 15-11, 27-32, 11-16, etc. white wins, analysis by Asa Long.

(A-1) If 27-24? then 3-7, 24-19, 15-24, 28-19, 14-18, 23-14, 16-23, 26-19, 11-15, 32-28, 15-24, 28-19, 6-9, 30-26, 9-18, 19-16, 12-19, 26-23, 18-27, 31-6, 2-9, 17-13, 9-14, 13-9, 4-8, 9-6, 7-11, 6-2, 14-18, 2-6, 18-23, 25-22, 23-27 drawn, M. Long vs. G. Miller, Star Wars Postal Tournament: Round 1.

(A-2) In game #21 of the Banks-Long World Championship Match (1934) , Asa Long played 11-7? instead to a drawn result.

(A-3) If 24-28 then 9-6, 28-32, 6-2, 32-28, 2-7, 10-14, 7-10, 14-17, 25-21, 17-22, 11-15, 23-26, 10-14, 18-23, 15-18, etc. white wins, analysis by Asa Long.

(B) If 1-6 then 22-17, 11-16 (B-1) , 20-11, 7-16, 24-20, 15-19, 20-11, 8-15, 23-16, 12-19, 27-23, 19-24, 23-19, 4-8, 19-16, 8-11, 16-7, 2-11, 17-13, 5-9, 26-22, 24-28, 30-26, 14-18, 29-25, 11-16, 31-27, 9-14, 22-17, etc. white wins, analysis by Edwin F. Hunt.

(B-1) Or a more desperate attempt with 6-9, 17-13, 14-17, 13-6, 2-9, 21-14, 9-18, 23-14, 10-17, 29-25, 17-21, 27-23, 15-19, 24-15, 11-27, 31-24, 7-10, 24-19, 8-11, 26-23, 11-15, 32-28, 15-24, 28-19, 5-9, 25-22, 4-8, 23-18, 10-14, 18-15, 14-18, 22-17, 18-23, 17-13, 9-14, 20-16, etc. white wins, D. Cayton vs. E. Hangen, The Starship Ladder.

C. Corrects 30-26 as previously analyzed to draw.

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In the June 1995 issue of the ACFB, Editor Al Lyman subjected the alternate 11-16 defense to a "fresh look", including several variations not covered in Denvir's Three-Move Guide. The following analysis is provided:

10-15, 22-17, 9-14, 17-10, 7-14, 25-22, 11-16, 22-18* (A) 15-22, 26-10, 6-15, 24-19*, 15-24, 28-19, 5-9 (B) , 29-25, 9-14, 25-22, 3-7, 22-18, 1-6, 18-9, 6-13, 30-26, 2-6, 26-22, 8-11, 22-18, 6-10, forming the diagram shown in the December 1995 issue of the ACFB, page 12, top right. Note: a single white piece needs to be added to square #31.

The position is as follows: White: 32, 31, 27, 23, 21, 19, 18
Black: 4, 7, 10, 11, 12, 13, 16

Continue: 18-15!* (by Brian Hinkle) , 11-18, 23-14, 10-17, 21-14, 16-23, 27-18, 4-8, 14-9 (by Chinook) , 7-10, 9-6, 8-11, 6-2, 10-15, 18-14, 15-18, 14-10*, 18-22, 2-6!*, 22-25, 6-9*, 13-17, 10-7, 25-30, 9-14, 17-22, 7-3, 30-25, 14-10, 25-21, 3-7, 11-16, 7-11, 16-20, 10.14!*, etc. white wins. A splendid cooperative effort by Brian Hinkle, Al Lyman, and Chinook.

(A) Denvir showed the immediate 24-19, 15-24, 28-19 exchange to only draw in his Three-Move Guide, pages 22-24.

(B) Denvir demonstrated a number of white wins against both 3-7 and 8-11 instead.

10-15, 24-20, 11-16:after 20-11, 7-16, then the natural 22-18, 15-22, 25-18 exchange appears to be the strongest attack, continue: 3-7 (A) , 28-24 (B) , 8-11 (C) (D) , 29-25, 6-10 (E) , 25-22, 1-6, 24-19, 4-8, 22-17, etc. to a position assessed as a probable white win by Chinook.

(A) The following game ensued from the 8-11 defense, continue: 28-24, 16-20, 21-17, 6-10, 17-13, 9-14, 18-9, 5-14, 13-9, 14-17, 9-5? (29-25 instead should win for white) , 11-15, 29-25, 17-21, 25-22, 4-8, 22-17, 2-6, 17-13, 3-7*, 13-9 (a surprise pitch with intentions to win!) , 6-13, 26-22, 7-11* (white can win if black pitches back with 13-17, etc.) , 23-19, 1.6!* (the biggest surprise of all!) , 5-1, 15-18, 22-15, 11-18, 32-28, 13-17*, etc. drawn, M. Banks vs. D. Cayton, The Starship Ladder. See Keystone Checker Review, July 1993, pages 559-560, for additional comments.Back to Openings that may lose Index|Top of Page|Main Index

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(B) The 29-25 attack instead may only draw, continue: 16-19, 23-16, 12-19, 25-22, 6-10, 27-24, 10-15, 18-11, 8-15, 32-27, 4-8, 24-20, 8-12, 20-16, 1-6, 27-23, 6-10, 23-18, 7-11, 16-7, 2-11, 22-17, 15-22, 17-13, 9-14, 26-17, 14-18, 17-14, 10-17, 21-14, 11-16, 13-9, 19-24, 28-19, 16-23, 9-6, 12-16, 14-10 drawn, D. Cayton vs. M. Banks, The Starship Ladder.

(C) If 6-10 then 29-25, 1-6, 24-19, 9-14, 18-9, 6-13, 26-22, 8-11, 22-18, 2-6, 25-22, etc. to a white win, analysis by Chinook.

(D) If 9-14, 18-9, 5-14 then 29-25, 7-10, 24-20, 16-19, 23-16, 12-19, 20-16, 8-11, 16-7, 2-11, 27-23, 19-24, 25-22, 6-9, 22-18, 24-28, 31-27, etc. to a white win, analysis by Chinook.

(E) Transposes into a setting which evolves from another barred opening: 11-16, 24-19, 10-15, 19-10, 6-15, 22-18, 15-22, 25-18, 8-11, 28-24, 7-10, 29-25, 3-7 same.

COMMENT: The natural 22-18, 15-22, 25-18 attack, followed up with 28-24, appears to place black's position in the "self-destruct" mode. Can a sturdier defense for black be discovered?

11-15, 21-17, 10-14: the last remaining "Old Faithful" opening. Can it be revived?

Note the similarity of this opening to 11-15, 22-17, 10-14 (ACF #89-A) . The difference is that white has additional strength with the piece stationed on square #22 instead of square #21. The following analysis is provided:

11-15, 21-17, 10-14, 17-10, 7-14, 24-20!* (A) , 6-10, 28-24, 8-11 (B) , 25-21, 9-13 (C) , 23-19, 14-18, 26-23, 18-25, 29-22, 5-9, 23-18, 10-14 (D) , 19-10, 14-23, 27-18, 2-7, 10-6, 1-10, 31-27, 4-8, 27-23, 12-16, 24-19, 8-12, 32-28, 10-14, 19-15, etc. white wins, analysis by Chinook.

(A) A subtle attack discovered by Brian Hinkle which appears to win. If the natural 24-19?, 15-24, 28-19 attack is taken, then one possible continuation might be 6-10, 22-18, 8-11, 25-22, 11-16, 29-25, 1-6, 18-15, 3-7, 15-11, 9-13 and now 25-21 transposes into Game #8 of my WCM against Richard Fortman, in which a draw was later missed. See the 1992 Checkers Annual, pages 158-159, for further details.Back to Openings that may lose Index|Top of Page|Main Index

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(B) If 9-13 then 22-18, 15-22, 25-9, 5-14, 29-25 and white is powerful, by Brian Hinkle.

(C) If 4-8 (C-1) then 23-19, 2-7, 32-28!, 9-13, 22-17, 13-22, 26-17, 5-9, 30-25, etc. white wins, analysis by Checkers 3.0.

(C-1) If 1-6 then 23-19, 14-18, 22-17, 9-14, 26-23, 3-7, 30-26, 18-22, 17-13, 15-18, 26-17, 18-22, 19-15, 11-18, 24-19, 4-8, 19-15, 10-26, 17-1, etc. white wins, analysis by Chinook.

(D) If 1-5 then 27-23, 9-14, 18-9, 5-14, 31-27, 11-16, 20-11, 3-7, 11-8, 4-11, 23-18, 14-23, 27-18, 11-16, 18-11, 16-23, 11-8, 7-11, 8-3, 11-16, 24-20, etc. white wins, analysis by Chinook.

11-16, 24-19, 10-15: after 19-10, 6-15 then 22-18, 15-22, 25-18, 8-11 (A) (B) , 28-24, 7-10, 29-25, 3-7, 25-22, 1-6, 24-19, 4-8 and 22-17 results in a setting currently rated by Chinook as a white win. This setting transposes from a natural run-up from another barred opening: 10-15, 24-20, 11-16, 20-11, 7-16, 22-18, 15-22, 25-18, 3-7, 28-24, 8-11, 29-25, 6-10, 25-22, 1-6, 24-19, 4-8, 22-17 same.

(A) If 1-6 then 28-24, 6-10, 18-14, 9-18, 23-14, 10-17, 21-14, 7-10, 14-7, 3-10, 29-25, 10-15, 24-20, 15-19, 20-11, 8-15, 32-28, 4-8, 25-22, 5-9, 27-24, 9-14, 24-20, 14-18, 22-17, 2-7, 17-14, 8-11, 14-9, 7-10, 26-23, 18-27, 31-24, etc. white wins, D. Cayton vs. E. Hangen, The Starship Ladder.

(B) If 7-10 then 18-14, 10-17, 21-14, 9-18, 23-14, 3-7, 28-24, 1-6, 29-25, 16-20, 25-22, 8-11, 26-23, 6-10, 22-17, 11-15, 23-19, 15-18, 30-25, 4-8, 27-23*, 18-27, 32-23, 20-27, 31-24, 8-11, 25-22, 2-6, 22-18, 12-16, 19-12, 10-15, 12-8, 15-22, 23-18, 11-16, 8-3, etc. white wins, J. Moon vs. D. Cayton, The Starship Ladder.

COMMENT: The prospects for this opening are discouraging. However, surprisingly little attention has been given to it. Additional analysis is needed before this opening is permanently exiled to the ôBlack Holeö.Back to Openings that may lose Index|Top of Page|Main Index

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12-16, 23-18, 9-14: this opening was selected as the ôDirectorÆs Choiceö in Round 1 of the Star Wars Postal Tournament. In view of the following play, this opening is now in Jeopardy.

12-16, 23-18, 9-14, 18-9, 6-13, 22-18 (A) , 1-6 (B) (C) , 24-20 (D) , 16-19, 25-22, 5-9 (Var. I, II) , 29-25, 10-14 (E) , 18-15, 11-18, 22-15, 7-11 (F) (G) , 27-24, 11-18, 24-15, 3-7 (H) , 28-24, 13-17, 24-19, 7-11 (I) , 20-16 (J) , 11-20, 19-16, 8-12, 16-11, 20-24, 11-7, 2-11, 15-8, 4-11, 26-22, 17-26, 31-8, 14-18, 8-3, 9-14 (K) , 3-7, 6-9, 7-11, 9-13, 11-7, 13-17, 7-10, 24-27, 32-23, 18-27, 25-22, 17-26, 30-23, etc. white wins, analysis by Elbert Lowder.

(A) The power attack, also reached from another barred opening: 9-14, 22-18, 12-16, 18-9, 6-13, 23-18 same. If the 26-23 attack is selected then 16-20, 22-18 and Nigel Proffitt suggests 5-9*, etc. to draw.

(B) The 10-15 defense seems to lose, continue: 27-23!, 15-22, 25-18, 1-6 (B-1) , 24-19, 16-20, 29-25, 6-9, 32-27*, 7-10, 18-14, 10-17, 21-14, 9-18, 23-14, 3-7, 27-23, 2-6, 28-24, 20-27, 31-24 white wins, B. Hinkle vs. G. Miller, Star Wars Postal Tournament: Round 1.

(B-1) 8-12, 29-25, 4-8, 25-22, 2-6, 24-19, 5-9, 22-17, 13-22, 26-17, 9-13, 17-14, 7-10, 14-7, 3-10, 18-14, 10-17, 21-14, 13-17, 28-24, 16-20, 14-10, 20-27, 31-24, 6-15, 19-10, 11-16, 24-20, 16-19, 23-16, 12-19, 10-7, 8-12, 7-3, 19-23, 3-7 white wins, M. Long vs. G. Miller, Star Wars Postal Tournament: Round 1.

(C) The 16-20 defense has resulted in a number of failed attempts, continue: 18-14, 10-17, 21-14, 11-15 (C-1) , 24-19, 15-24, 28-19, 8-11, 25-22, 4-8, 22-18, 8-12 (C-2) , 19-15, 11-16, 15-11, 16-19, 11-8, 12-16, 8-4, 19-24, 29-25, 24-28, 14-10, 7-23, 26-12 white wins, G. Miller vs. B. Hinkle, Star Wars Postal Tournament: Round 1.

(C-1) If 1-6 then 24-19, 8-12, 26-23, 6-10, 25-21, 10-17, 21-14, 2-6, 29-25, 4-8, 25-21, 7-10, 14-7, 3-10, 31-26, 11-16, 23-18, 16-23, 26-19, 6-9, 18-15, 10-14, 15-10, 14-18, 10-6 white wins, J. Moon vs. D. Cayton, The Starship Ladder.

(C-2) If 1-6 then 29-25, 8-12, 19-15, 11-16, 15-11, 6-10, 25-21, 10-17, 21-14, 16-19, 11-8, 2-6, 18-15, 19-24, 8-4, 24-28, 4-8, 13-17, 8-4 white wins, M. Long vs. B. Hinkle, Star Wars Postal Tournament: Round 1.Back to Openings that may lose Index|Top of Page|Main Index

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(D) A cook developed by Brian Hinkle which appears to win! The natural 25-22 attack has resulted in a number of drawn games on both the Starship Ladder and in Round 1 of the Star Wars Postal Tournament. An interesting note is that Chinook completely overlooked the 24-20 attack? Perhaps, computers will not completely dominate our game after all.

(E) If 11-15, 18-11, 8-15 then 27-23, 19-24, 28-19, 15-24, 32-28, 7-11, 28-19, 11-15, 23-18!, 15-24, 21-17, etc. white wins, by Elbert Lowder.

(F) If 8-12 then 15-11, 7-16, 20-11, 6-10, 25-22, 3-8, 27-24!, 8-15, 22-18!, 14-23, 31-27!, etc. white wins, by Brian Hinkle.

(G) If 19-23, 26-19, 7-11 then 15-10, 6-24, 28-19, 3-7, 27-23, 7-10, 25-22, etc. white wins, by Elbert Lowder.

(H) If 2-7 then 28-24, 13-17 (H-1) , 24-19, 9-13 (H-2) , 23-27, 7-10 (H-3) (H-4) , 27-23, 18-27, 31-24, 3-7, 25-22, 8-12, 20-16, 4-8, 24-20, 14-18, 21-14, 10-17, 16-11!, 7-23, 26-19, 17-26, 30-14 white wins, by Elbert Lowder.

(H-l) If 7-10 then 24-19, 18-22, 25-18, 14-23, 26-22, 10-14, 22-18, etc. white wins, by Elbert Lowder.

(H-2) If 7-11 then 32-27, 3-7, 26-22 (if 19-16? then 8-12, 15-8, 4-11!, etc. and black can draw!) , 17-26, 30-23, 7-10 (if 9-13 then 27-24, 18-27, 15-10, etc. white wins) , 31-26, 9-13, 26-22, etc. white wins, by Elbert Lowder.

(H-3) If 8-12 then 27-24, 7-10, 26-22, 17-26, 31-22, 3-8 (if 3-7 then 20-16, 18-23, 22-18, 14-17, 21-14, 10-17, 25-21, etc. white wins) , 30-26* (if 20-16? then 18-23, 6-2, 23-30, 20-16, etc. white wins, by Elbert Lowder.Back to Openings that may lose Index|Top of Page|Main Index

(H-4) If 6-9 (7-11, 19-16, etc. white wins) , 27-23*, 18-27, 31-24, 7-11, 15-10, 17-22, 25-18, 14-23, 19-16, etc. white wins, by Elbert Lowder.

(I) If 9-13 the 19-16, 7-11, 16-7, 2-11, 32-27, 6-9, 27-24, 18-23, 26-19, 11-18, 31-26, 18-23, 25-22, 23-27, 20-16, 8-12, 16-11, 27-31, 24-20, 31-27, 22-18, etc. white wins, by Elbert Lowder.

(J) ôThe surest way to get the win and in my opinion, the only way, ö Elbert Lowder.

(K) If 9-13 then 3-7, 18-23, 7-11, 24-27, 25-22, 27-31, 22-18, 6-9, 11-15, etc. white wins, by Elbert Lowder.

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Variation I If 10-15 then 18-14, 15-18, 22-15, 11-18, 29-25, 6-9, 26-22, 8-12, 22-15, 9-18, 15-11, 7-16, 20-11, 19-23, 28-24, 5-9, 24-19, 3-7, 11-8, 4-11, 19-15, 11-16, 15-11, 16-19 (A) , 11-8, 7-11, 8-4, 11-16, 4-8, 2-7!, 8-4, 16-20, 4-8, 19-24, 8-4, 12-16!, 4-8, 16-19, 8-12, 7-10, 12-16, 10-14, 16-11, 13-17, 11-15, 17-22, 15-10, 22-29, 10-17, 9-13, 17-14, 29-25, 14-10, 18-22, 27-18, 19-23, 10-15*, 24-27, 31-24, 20-27 and the piece on square #15 is advanced to square #24 to win, by Brian Hinkle and Chinook.

(A) If 7-10 then 11-8, 10-14, 8-4, 13-17, 25-22, 17-26, 31-15, 16-20, 27-18, 14-23, 4-8, 20-24, 15-10, 24-27, 8-11, 27-31, 10-6, 9-14, 6-1, 14-18, 21-17, 18-22, 17-13, 2-7, 11-2, 31-27, 2-7, 22-26, 7-10, 26-31, 10-15, etc. white wins, analysis by Chinook.

Variation Il If 8-12 then 29-25, 3-8, 18-14!, 10-17, 21-14, etc. seems to win. If 6-9 then 27-24, etc. wins and if 11-15 then 25-21, etc. wins, by Nigel Proffitt.

12-16, 23-19, 16-23: this opening was regarded as the weakest of the barred openings during the two-move era. Published analysis of this opening made a prominent appearance in Kear's Encyclopedia, pages 44-49, with a very doubtful prognosis. A more substantial compilation appeared in the American Checker Player's Handbook (1931) , pages 45-67, within which a total of 51 variations were covered. This source shall be abbreviated and referred to as ACPH in future annotations.

The following play seems to refute the most recent attempts to extract a draw from this opening:Back to Openings that may lose Index|Top of Page|Main Index

12-16, 23-19, 16-23, 27-18 (A) , 11-16 (B) , 26-23 (C) , 16-20, 24-19 (D) , 8-11, 30-26, 4-8, 32-27, 10-14, 19-15, 20-24, 27-20, 9-13, 18-9, 11-27, 31-24, 5-14, 26-23, 13-17, 22-13, 6-10 (E) , 13-9 (F) , 14-17, 21-14, 10-17, 25-21, 17-22, 21-17, 22-26, 29-25, 26-30, 25-21, 8-11, 17-13, 30-25, 21-17, 25-22, 9-5, 11-16!* (G) , 20-11, 7-16, 24-19, 22-26, 19-12, 26-19, 17-14, 19-15, 28-24, 15-11, 24-20, 11-15, 14-9, 15-11, etc. black wins, by Dennis Cayton.

(A) The alternate 26-19 capture does not survive, see Kear's Encyclopedia, page 49.

(B) Transposes into 11-16, 23-19, 16-23 (ACF #121-A) , 27-18??, 12-16 same.

(C) If 22-17 then 16-20, 24-19, 9-14, 18-9, 5-14, 25-22, 8-11, 26-23, 11-15, 30-26, 15-24, 28-19, 4-8, 17-13, 14-17, 21-14, 10-17, 22-18, 8-11, 32-27, 17-21, 26-22, 21-25, 18-15, 11-18, 22-15, 25-30, 15-11, 7-16, 19-12, 6-10, 23-19, 10-14, etc. black wins, B. Hinkle vs. M. Long, Star Wars Postal Tournament: Final Round.

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(D) If 32-27 then 8-11, 30-26 (D-1) , 4-8, 22-17 (D-2) (D-3) , 9-14, 18-9, 5-14, 24-19 (D-4) , 11-15, 25-22, 15-24, 28-19, 8-11 (D-5) , 22-18, 1-5, 18-9, 6-22 (D-6) , 26-17, 11-15, 19-16, 5-9, 17-13, 2-6, 16-12, 9-14, 27-24, 20-27, 31-24, 15-18, 23-19, 18-23, 19-16, 23-26, 24-20, 26-30, 16-11, 7-16, 20-11, 10-15, 11-8, 15-18, 8-4, 18-22, 4-8, 30-26, 8-11, 14-17, 21-14, 22-25, 29-22, 26-10, 11-7, 10-14, 7-11, 14-18, etc. black wins via Second position, B. Hinkle vs. B. Podoff, Star Wars Postal Tournament: Round 1.

(D-1) If 22-17 then 9-14, 18-9, 5-14, 24-19, 11-15, 19-16, 4-8, 30-26, 15-18, 25-22, 18-15, 29-22, 8-12*, 27-24, 20-27, 31-24, 12-19, 24-15, 10-19, 17-10, 6-15, 23-16, 2-6, 22-17, 15-19, 17-13, 1-5, etc. black wins, M. Long vs. D. Cayton, Star Wars Postal Tournament: Final Round. Back to Openings that may lose Index|Top of Page|Main Index

(D-2) The 18-15 double-exchange has been shown to lose in Kear's Encyclopedia and ACPH, continue: 11-18, 22-15, 10-19, 24-15, 7-10, 25-22, 10-19, 23-16, 6-10, 29-25, 9-13, 22-18, 2-7, 28-24, 8-11, 25-22, 10-15, 16-12, 5-9, 27-23, 20-27, 31-24, 1-5, 21-17, 7-10, 17-14, 10-17, 23-19, 11-16, 19-10, 16-20, 24-19 and 20-24! (varies from 17-21 by P. H. Ketchum to win in ACPH, page 58, Var. 31) , etc. black wins, B. Podoff vs. B. Hinkle, Star Wars Postal Tournament: Round 1.

(D-3) The other double-exchange via 18-14 also seems to lose, continue: 9-18, 22-15 (D-3a) , 11-18* (D-3b) , 23-14, 10-17, 21-14, 6-9, 26-23, 9-18, 23-14, 2-6, 25-22, 6-10, 22-17, 1-6, 31-26, 10-15, 26-23, 15-19, 23-16, 6-9, 29-25, 9-18, 24-19, 8-12, 28-24, 18-23, 27-18, 20-27, 18-15, 27-31, 15-11, 7-10, 11-7, 31-27, etc. black wins, by P. H. Ketchum, ACPH, pages 58-59, Var. 32.

(D-3a) If 23-14 then 10-17, 21-14, 11-15, 25-21, 8-11, 29-25, 11-16, 22-17, 16-19, 14-10, 7-14, 17-10, 2-7, 27-23, 7-14, 23-16, 20-27, 31-24, 5-9, 24-19, 15-24, 28-19, 14-18, 19-15, 9-13, 26-22, 18-23, 22-18, 6-9, 15-10, 23-26, 18-15, 26-31, 15-11 and now 9-14* (corrects 31-27? to a draw shown in ACPH, page 59, Var. 33) , 11-7, 14-18, etc. black wins, by Ernest Churchill, Checker Player's Delight, October 1977, page 568.

(D-3b) If 10-19? then 24-15, 11-18, 23-14, 8-11, 25-22, 11-15, 29-25, 6-9, 26-23, 9-18, 23-14, 7-11, 22-17, 2-6 (D-3bb) , 17-13, 15-18, 31-26, 11-15, 18-23, 3-7, 21-17, 7-11, 14-10, 18-22, 25-18, 15-22, 10-7, 22-26, 23-18, 26-30, 18-14, 30-26, etc. drawn, L. Bollinger vs. B. Vanderpool, Wood's Ladder.

(D-3bb) ACPH continued with 11-16, etc. to a drawn result, page 53, Variation 15. Back to Openings that may lose Index|Top of Page|Main Index

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(D-4) An unpublished defense with 25-22 fails, continue: 11-15, 23-19, 8-12, 27-23, 20-27, 31-24, 6-9!, 17-13, 7-11, 13-6, 2-9, 24-20, 15-24, 28-19, 11-15, 19-16, 12-19, 23-16, 9-13, 16-11, 15-19, 20-16, 19-24, 26-23, 24-27, 22-18, 27-31, 18-9, 10-15, etc. black wins, by Checkers 3.0.

(D-5) 7-11 also wins, continue: 22-18, 8-12!* (D-5a) , 18-9, 6-22, 26-17, 20-24!* (D-5b) , 27-20, 11-15, 17-14, 15-24, 14-7, 2-11, etc. black wins, see ACPH, page 56, variation 25, for further play.

(D-5a) Corrects 1-5? as previously analyzed by Checkers 3.0 and featured in the 1996 edition of the Compilation, page 39, Notes G and G-1.

(D-5b) If 11-15 then 27-24, etc. draws, by Brian Hinkle.

(D-6) Corrects the 5-14? jump to a drawn result as shown by Albert Rickard in a brief compilation of this opening published in 1949. He had based his premise that this opening was sound upon this jump.

(E) Left as a black win in ACPH, page 55, variation #23, note W.

(F) Matt Long's idea to extract a draw from this variation in an effort to prove this opening sound.

(G) Corrects 11-15? by Matt Long to a drawn result, as shown in the 1996 edition of the Compilation, page 38, note C.Back to Openings that may lose Index|Top of Page|Main Index

Please send all comments, criticisms, and supporting analysis to:
Brian Hinkle
2030 Phyllis
Saint Charles, MO 63301
Phone: 1-636-379-2483
E-Mail: hinkle@primary.net

and/or:
Dennis C. Cayton
601 Pembroke Avenue
Apartment #409
Norfolk, VA 23507-2049
E-Mail: starcap50@aol.com

and/or:
Alfred E. Lyman
3328 N. Garfield
Kansas City, MO 64116
E-Mail: krow@mailhost.primenet.com

and/or:
George Miller
384a Wells Road
Knowle, Bristol
BS4 2QP - England
E-Mail: 100622.1614@compuserve.com

Back to Openings that may lose Index|Top of Page|Main Index

Start 522.