Author: F. Huber
Date: 11:25:20 03/12/03
Go up one level in this thread
On March 12, 2003 at 12:06:29, Omid David Tabibi wrote:
>[Event "Computer chess game"]
>[Site "CHESSPC"]
>[Date "2003.03.12"]
>[Round "-"]
>[White "Omid David Tabibi"]
>[Black "Genesis 2.0 (Beta06)"]
>[Result "1-0"]
>[TimeControl "300"]
>
>1. d4 Nf6 2. f4 e6 3. e3 Be7 4. Bd3 Nc6 5. c3 O-O 6. e4 d5 7. e5 Ne4 8. Nd2
>Nxd2 9. Bxd2 f6 10. Qh5 g6 11. Qg4 fxe5 12. fxe5 Bh4+ 13. g3 Be7 14. O-O-O
>Kh8 15. h4 Bd7 16. Nf3 Be8 17. Ng5 Qd7 18. Qh3 Bxg5 19. hxg5 a5 20. Rh2 Rg8
>21. Rdh1 Rg7 22. Rf2 a4 23. Rf8+ Rg8 24. Rf6 Nd8 25. c4 a3 26. cxd5 axb2+
>27. Kb1 exd5 28. e6 Qg7 29. Bb4 h5 30. g4 Nxe6 31. Rxe6 Bf7 32. gxh5 Rge8
>{Black resigns} 1-0
>
>Position after white's 32nd move:
>
>[D] r5rk/1pp2bq1/4R1p1/3p2PP/1B1P4/3B3Q/Pp6/1K5R b - - 0 32
>
>Now almost all the engines I tested give conflicting mate announcements:
>
Hi Omid,
if you want really correct (and the shortest) solutions to mate problems,
you better should use a mate solve as Chest/ChestUCI. ;-)
Here´s the solution by ChestUCI Ver.2.3:
(about 3 min on my slow Celeron/400, so surely much less
than 1 min on fast computers of today)
Search for Mate in -10 ...
Mate in 7 found ! (31 Solutions in 02:58)
D1 02:58 -M1 Kh7 hxg6
D2 02:58 -M2 Qf8 hxg6 Qh6 Qxh6
D2 02:58 -M2 Qe5 hxg6 Kg7 Qh7
D2 02:58 -M2 Qf6 hxg6 Kg7 gxf6
D2 02:58 -M2 Rxa2 hxg6 Qh6 Qxh6
D2 02:58 -M2 Ra3 hxg6 Qh6 Qxh6
D2 02:58 -M2 Ra4 hxg6 Qh6 Qxh6
D2 02:58 -M2 Ra5 hxg6 Qh6 Qxh6
D2 02:58 -M2 Ra6 hxg6 Qh6 Qxh6
D2 02:58 -M2 Ra7 hxg6 Qh6 Qxh6
D2 02:58 -M2 Raf8 hxg6 Qh6 Qxh6
D2 02:58 -M2 Rae8 hxg6 Qh6 Qxh6
D2 02:58 -M2 Rad8 hxg6 Qh6 Qxh6
D2 02:58 -M2 Rac8 hxg6 Qh6 Qxh6
D2 02:58 -M2 Rab8 hxg6 Qh6 Qxh6
D2 02:58 -M2 Be8 hxg6 Qh6 Qxh6
D2 02:58 -M2 b5 hxg6 Qh6 Qxh6
D2 02:58 -M2 b6 hxg6 Qh6 Qxh6
D2 02:58 -M2 c5 hxg6 Qh6 Qxh6
D2 02:58 -M2 c6 hxg6 Qh6 Qxh6
D3 02:58 -M3 Qxd4 hxg6 Qh4 Qxh4 Kg7 Qh7
D4 02:58 -M4 Qh6 hxg6 Rxg6 Rxg6 Bxg6 Qxh6 Bh7 Qxh7
D4 02:58 -M4 Qh7 hxg6 Rg7 Qxh7 Rxh7 Rxh7 Kg8 gxf7
D4 02:58 -M4 Bxe6 hxg6 Bxh3 Rxh3 Qh6 Rxh6 Kg7 Rh7
D4 02:58 -M4 gxh5 Qxh5 Bxh5 Rxh5 Qh6 Rhxh6 Kg7 Rh7
D5 02:58 -M5 Rgb8 hxg6 Kg8 gxf7 Kxf7 Re7 Kf8 Rxg7 c5 Qh8
D5 02:58 -M5 Rgc8 hxg6 Kg8 gxf7 Kxf7 Re7 Kf8 Rxg7 c5 Qh8
D5 02:58 -M5 Rgd8 hxg6 Kg8 gxf7 Kxf7 Re7 Kf8 Rxg7 c5 Qh8
D6 02:58 -M6 Rgf8 hxg6 Kg8 gxf7 Rxf7 Rg6 Rd7 Rxg7 Rxg7 g6 Rxa2 Qh8
D7 02:58 -M7 Rge8 hxg6 Kg8 gxf7 Kxf7 Rf6 Kg8 Bh7 Kh8 Bg6 Qh6 Qxh6 Kg8 Bf7
D7 02:58 -M7 Rge8 Rxe8 Bxe8 hxg6 Kg8 Qe6 Bf7 gxf7 Qxf7 Bh7 Kg7 Qe5 Qf6 Qxf6
The latest 2 lines are the ´longest´ mates, so the solution has duals.
Of course you´ll have to set the option ´DefenderMoves´ in ChestUCI,
because it´s a mate for WHITE (after every move of black)!
Best regards,
Franz.
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