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Subject: Re: Promotion to Knight Wins

Author: F. Huber

Date: 02:09:58 05/23/04

Go up one level in this thread


On May 22, 2004 at 20:12:00, Rob Basham wrote:

>[D]8/p1P5/P7/3p4/5p1p/3p1P1P/K2p2pp/3R2nk w - -
>
>White mates by 1. c8N....etc
>
>This should make a good test move..
>
>White promotes to a knight twice and mates in about 10 or 12 moves...

Very easy to find for ChestUCI in automatic mode (with reversed search order):

ChestUCI Ver.3.5  UCI1:

CPU: Celeron 400MHz
FEN: 8/p1P5/P7/3p4/5p1p/3p1P1P/K2p2pp/3R2nk w - -
Search for Auto-Special-Mate [C+/K0/P0/X0] in 12 ...  (Hash=64MB)
Search for Auto-Special-Mate [C-/K0/P0/X1] in 12 ...  (Hash=64MB)
Search for Auto-Special-Mate [C-/K0/P0/X2] in 12 ...  (Hash=64MB)
Search for Auto-Special-Mate [C-/K0/P0/X3] in 12 ...  (Hash=64MB)
Search for Auto-Special-Mate [C-/K0/P0/X4] in 12 ...  (Hash=64MB)
12   00:05  M12  1.c8S
1.c8N d4 2.Nb6 axb6 3.a7 b5 4.a8N b4 5.Nb6 b3+ 6.Ka3 b2 7.Nc4 b1N+ 8.Rxb1 d1Q
9.Rxd1 d2 10.Nxd2 d3 11.Ne4 d2 12.Nf2#
Search for Auto-Special-Mate [C-/K0/P1/X4] in 12 ...  (Hash=64MB)
12   00:08  M12  1.c8S
1.c8N d4 2.Nb6 axb6 3.a7 b5 4.a8N b4 5.Nb6 b3+ 6.Ka3 b2 7.Nc4 b1N+ 8.Rxb1 d1Q
9.Rxd1 d2 10.Nxd2 d3 11.Ne4 d2 12.Nf2#
Search for Auto-Special-Mate [C-/K1/P1/X4] in 12 ...  (Hash=64MB)
12   00:12  M12  1.c8S
1.c8N d4 2.Nb6 axb6 3.a7 b5 4.a8N b4 5.Nb6 b3+ 6.Ka3 b2 7.Nc4 b1N+ 8.Rxb1 d1Q
9.Rxd1 d2 10.Nxd2 d3 11.Ne4 d2 12.Nf2#
Auto-Special-Mate in 12 found !  (00:02)
1.c8N d4 2.Nb6 axb6 3.a7 b5 4.a8N b4 5.Nb6 b3+ 6.Ka3 b2 7.Nc4 b1N+ 8.Rxb1 d1Q
9.Rxd1 d2 10.Nxd2 d3 11.Ne4 d2 12.Nf2#
1 Solution  (Auto-Special-Mate in 12)

Best regards,
Franz.



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