## Jim's Endings

You may print this and show it to others. But, this article will eventually be part of a book that I am writing. So, please do not distribute it widely.

If you need help reading checkers notation, please print out the numbered board.

Also see Loy's Checker Problems and Easy Checkers Problems. These are endings rather than problems. The problems involve shots resulting in gain of material (pieces) or an obviously won (or drawn) ending. These endings are not so straightforward or forced. The win or draw may require typical ending ideas, such as the move or kinging with later win of material. Of course some of these endings have resided in ending databases, along with the winning or drawing moves, before I discovered them. So, I can only claim a share of the credit for some of these discoveries.

 Ending #1: This may be difficult to see. Once the right idea is found, the draw is easy. In fact, there are plenty of opportunities for Red to lose, if he/she tries to avoid a draw. Ending #2: From V. Oquendo - C. Olsen, on ItsYourTurn.com. Ending #3: This is from my work on the 2001 I-D booklet. Ending #4: This is a common ending situation (with the weak pieces on 19 and 24) in which Red is in some trouble. But here, Red can win. Ending #5: A position misjudged by Hall Carr. Ending #6: This is given as a WW in Boland's Bridges (#5, note A). Ending #7: A while back, I experimented with this ending with Nexus, and it looked like it might be a draw. Ending #8: An important position by B. Boland in Boland's Border Classics, p. 52, #9. Ending #9: A position by J. T. Edson in Boland's Border Classics. Ending #10: A position from Boland's Famous Positions, p. 134. Ending #11: A position from Boland's Famous Positions, p. 124. Ending #12: A position by H. Shearer, Lees' Guide supplement, p. 250. Ending #13: Lees' Guide appendix, p. 215. Ending #14: I was studying an opening. Ending #15: Lees' Guide, p.245, v.2 Ending #16: L. Phillips, Lees' Guide, p.175, v.8. Ending #17: E. Ingram - W. Nesbitt, 1952 U.S. Nat., p.5 Ending #18: C. Hollow - R. Shade, 1952 U.S. Nat., p.91 Ending #19: A difficult ending by S. Schonbach in MWC 1980.

Solutions:

Solution #1: 26-22!! (I find that one hard to see) 18-25 (17-26 7-10 regains the piece with a draw) 7-10 (an easily drawn piece-down ending) 25-29 (1-5 9-6 is similar) 9-6 29-25 6-2 25-22 23-19 21-25(A) (rightly accepting the draw) 30-21 14-18 21-14 18-23 27-18 22-24 draw.

A - 22-18 19-16 18-22 16-12 (2-6 22-18 6-9? 18-23 RW) 22-18 12-8 18-22 8-3 White may win. Red must give back the piece sometime before it is too late.

Solution #2: 20-24 (Red moved 3-7? and should have lost) 6-1 24-27! 31-24 30-26 24-19 3-8! draws.

Solution #3: 12-8! 19-15(A) 11-18 4-11 18-23* 11-16 23-17* 16-20 27-32* 20-24 22-26 (or 22-18 similar, but longer) 29-25 26-31* 24-28 31-26 WW, a win in Chinook's ending database.

A - 19-23 (or 19-24) is also a WW, apparently by trading off the king on 29 achieving First Position. Continue 8-3 23-19 3-7 19-23 7-10 23-19 10-14 19-23 11-16 23-27 14-18 27-32 16-11 32-27 11-15 and 22-25 WW

Solution #4: The shot is easy, but does it win? 27-32! 16-23 24-27 31-24 13-17 RW! (like First Position).

Solution #5: 21-25* 7-3 (7-2 8-11* draw) 25-30 draw.

The opening: 9-13 21-17 5-9 25-21 11-15 29-25 9-14 23-18 14-23 27-11 8-15 17-14 10-17 21-14 12-16 24-20 16-19 32-27 4-8 25-21 8-12 27-24 3-8 14-9 7-11 31-27 1-5 27-23 5-9 23-7 2-11 24-19 15-24 28-19 6-10 (14-18 22-15 11-18 19-15 18-22 draws instead of H. Carr's 6-9?) 21-17 14-21 22-18 13-17 19-16 12-19 26-22 17-26 30-7 [diagram] 8-11? (see solution above) 7-3* 21-25 3-8 10-15 18-14 WW, H. Carr, Elam's Checker Board, game 5502.

Solution #6: 3-8!! (A. Anderson gave 26-22 6-2 to a WW) 6-2 26-22 18-14 22-18 14-9 18-15 10-7 15-11 7-3 8-12 3-7 1-6 draw.

Solution #7: 28-24* 18-23 6-2* 7-10 1-6* 23-19 24-20 19-26 (19-23 20-16 draw) 12-8 draw.

Solution #8: 23-27!! (Boland moved 23-26 to make no progress) 24-31 15-19 WW! Boland's positions #2 and #9 are both WW's.

Solution #9: 18-23* 20-24 4-8 10-14 8-11* (Edson's move was 8-12? to lose) 14-10 23-26* 24-27 26-22 27-23 11-16* 10-15 22-17 (heading for the double corner) draw.

Solution #10: 10-15 (Boland moved 10-14?? to a clever draw) RW; the win looks easy. Note A on that same page is a RW.

Solution #11: 10-7!!(A) 26-22 6-2! 22-15 14-9 draw.

A - Boland gave 6-9? 19-16! (26-22? draws as above) 18-15 26-22* (Boland drew with 17-13?) 9-13 26-22 13-9 17-13 RW.

Solution #12: 26-30* (Shearer gave 9-13? to draw) 6-13 30-21 13-9 [28-24 (now or later) 12-16 wins the piece on 24] 21-17 9-6 17-14 6-1 14-10 1-5 12-16 5-9 16-19 9-5 19-23 28-24 (5-9 23-27 will be similar) 23-27 (easiest) 24-19 27-31 5-9 31-27 19-16 10-7* 16-12 7-3 RW (is not difficult).

The opening 11-15 23-18 8-11 27-23 4-8 23-19 10-14 19-10 14-23 26-19 7-14 24-20 6-10 28-24 9-13 32-28 1-6 30-26 3-7 19-15 10-19 24-15 11-18 22-15 7-11 26-22 11-18 22-15 2-7 31-26 14-18 15-10 6-15 26-23 18-27 21-17 13-22 25-2 27-31 2-6 8-11 6-10 5-9 29-25 31-26 10-6? (28-24 draw) [diagram]

Solution #13: 14-18 (A. Bjerkness gave 14-17 to draw, but Red can still win by 17-14 next, and then 14-18) 1-5 18-23 (or 20-24 RW) 5-9 23-19 and 2-6 RW.

The opening: 11-15 23-19 9-14 27-23 8-11 22-18 15-22 25-9 5-14 29-25 6-9 25-22 9-13 24-20 11-15 32-27 15-24 28-19 4-8 22-18 14-17 21-14 10-17 19-15 1-6 23-19 17-22 26-17 13-22 27-24 6-9 20-16 9-13 15-11 8-15 18-11 7-10 24-20 10-15 19-10 12-19 31-27 19-24 27-23 24-27 23-19 27-32 19-16 22-26 30-23 32-27 23-18 27-23 18-14 23-18 10-6 18-9 6-1 9-14 16-12 14-10 20-16 13-17 11-8 17-22 8-4 22-26 4-8 26-31 8-11 31-26 1-5 26-23 5-1 23-18 1-5 10-15 11-8 18-14 8-4 15-19 4-8 19-24 8-11 24-20 5-1 [diagram]

Solution #14: 25-22! 18-9 22-18 3-8 30-25 8-12 10-7 6-10 (otherwise White kings several pieces, and wins) 13-6 10-19 18-15 1-10 15-6 WW!

Solution #15: 31-27* (W. Fox moved 6-1? to lose) 3-8 27-24* 8-12 6-2 12-16 2-6 draw.

The opening: 11-15 22-17 8-11 17-14 9-18 23-14 10-17 21-14 12-16 25-22 4-8 29-25 6-9 24-19 16-23 27-18 8-12 28-24 12-16 24-20 16-19 32-28 1-6 14-10 7-23 28-24 19-28 26-1 9-13 25-21 28-32 30-26 32-28 22-17 13-22 26-17 28-24 17-13 24-19 1-6 2-9 13-6 19-15 6-2 5-9 2-6 9-14 6-1 [diagram] 15-18 1-5 3-8 31-27 8-12 5-1 14-17 21-14 18-9 27-24 11-15 1-5 9-14 5-1 14-10 1-5 15-18 24-19 18-23 20-16 23-27 16-11 27-32 11-8 32-28 8-4 28-24 RW

Solution #16: 3-7!! 10-3 15-18 6-2 18-23 2-6 23-27 6-10 27-32 10-14 32-28 14-10 28-24 10-6! 24-27 (24-20 loses) draw.

The opening: 11-16 22-18 10-14 25-22 8-11 24-20 16-19 23-16 14-23 26-19 9-14 31-26 5-9 27-23 6-10 29-25 2-6 32-27 4-8 27-24 10-15 19-10 12-19 23-16 6-15 24-19 15-24 28-19 14-18 22-15 11-18 26-22 18-23 16-12 23-27 22-18 27-31 25-22 31-27 19-15 7-11 21-17 27-23 17-14 23-19 14-5 19-10 30-25 10-7 25-21 7-10 21-17 10-7 17-13 7-10 22-17 10-6 17-14 6-2 14-10 2-7 10-6 1-10 5-1 7-2 1-6 2-9 13-6 10-15 18-14 15-19 14-10 11-15 20-16 [diagram] 15-18 6-2 19-24 2-6 WW

Solution #17: 18-23* (Red moved 18-22 and drew) 6-2 14-17* 2-6 17-22* 6-9 22-26* 9-14 26-31* 14-18 11-7* RW, and now you may see why all these moves were forced.

Solution #18: 16-12* (White moved 16-11? to draw) 5-9 (24-27 loses a long ending) 13-6 1-10 22-18 (which is why the piece shouldn't be at 11) WW.

Solution #19: 19-15!! (Schonbach gave 19-23? to draw) 14-17 28-24 20-27 32-23 22-26 WW according to the computers.