"Zugzwang" in Checkers |
by Aron Zlobinskiy January 26, 2004 |
Zugzwang is a situation in a checkers game when the need to move leads to a bad position, even to a loss.
Let us demonstrate a game with such a situation.
L. Margolin - A. Zlobinskiy
Moscow, 1972
The "Old Game"
Trunk Line | Current Position |
Comments |
1.11-15 23-19 |
A. If 8...30-25 then
9.02-07 32-28
10.10-15 19:10 B. The theoretical recommendation is based on: C. 9...21-17? 10.09-14 18:02 11.10-15 19:10 12.07:21 02:16 13.12:17+ |
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10.09-13 22-18 11.10-14 18:09 12.05:14 25-22 13.03-07 15-11! (position) 14.06-10 AB 22-18 15.01-05 18:09 16.05:14 C |
A. 14.07-10? 30-26 15.16:07 19-15 16.10:19 23:16 17.20:11 22-17 18.13:22 26:03+ B. 14.01-05 11-08! was an interesting line C. 16.13:06 would be a mistake because of: 21-17! 17.05-10 D 30-25! 18.09-13 25-22 19.06-09 32-28 20.09-14 19-15!+ D. 17.06-09 17-13 18.09-14 30-25 19.14-18 23:14 20.10:17 13:22 21.16:23 27:18 22.07:16 18-14 and white should win. |
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16....31-26 (position) 17.13-17? AB 19-15! 18.10:19 23-18 19.14:23 21:14 |
A. Black counted 17... 11-08 (on 32-28 or 30-25 strike 14-18) 18.12:03 19:12 19.10-15+ B. The draw was after 17.14-17! 21:14 18.10:17 19-15 19.07-10! C 15:06 20.02:09 11-08 21.12:03 27-24 22.20:18 26-22 23.18:25 30:05= C. 19.17-21? 23-18! 20.13-17 32-28 21.16-19 15:24 22.07:16 27-23 23.20:27 23:32 and white should win |
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A rare position - having an extra checker and their move black must resign - ZUGZWANG! |