Author: Dennis Breuker
Date: 07:43:27 11/08/01
Go up one level in this thread
On November 07, 2001 at 08:23:57, leonid wrote:
>Hi!
>
>I hope that your program will do better that mine on this position. For mine it
>went slow on selective and brute force search. At the same time position look
>like very usual.
>
>[D]qrkrqqbq/2b5/2q5/QBpNRN2/2n2Q2/2n2P2/2p2B2/QRqQQKQR w - -
>
>Please indicate your result.
>
>Thanks,
>Leonid.
Duck, using proof number search, finds a mate in 17
(not optimal I guess) in 85 sec on a P4 1700
after 1,530,490 nodes searched
Dennis
Here is the output (whole winning tree):
1.a5xc7 c6xc7 2.d5-e7 f8xe7 3.f5xe7 e8xe7 4.g1-g4 g8-e6
5.g4xe6 d8-d7 6.b5xd7 c8-d8 7.e6xe7 mat
6. .. e7xd7 7.h1xh8 c7-d8 8.e6xd7 mat
6. .. c7xd7 7.d1xd7 e7xd7 8.h1xh8 c8-c7
9.e5xc5 mat
5. .. c8-b7 6.b5-c6 mat
5. .. e7-d7 6.b5xd7 d8xd7 7.h1xh8 c7-d8 8.e6xd7 mat
6. .. c7xd7 7.e5xc5 a8-c6 8.c5xc6 mat
5. .. e7xe6 6.b5-d7 d8xd7 7.h1xh8 d7-d8 8.h8xd8 c7xd8
9.e5xc5 d8-c7 10.c5xc7 mat
9. .. a8-c6 10.f4xb8 mat
9. .. e6-c6 10.e1-e6 d8-d7 11.e6xd7 mat
7. .. c7-d8 8.e5xc5 a8-c6
9.f4xb8 mat
8. .. d7-c7
9.h8xd8 mat
8. .. e6-c6
9.h8xd8 c8xd8 10.f4-f8 d8-c7 11.d1xd7 c7xd7 12.f8-e7 d7-c8
13.c5xc6 a8xc6 14.b1xb8 c8xb8 15.a1-a7 b8-c8 16.e7-f8 c6-e8
17.f8xe8 mat
9. .. d7xd8 10.c5xc6 a8xc6 11.f4xb8 mat
7. .. e6-g8 8.h8xg8 d7-d8
9.f4-f5 c7-d7 10.f5xd7 mat
8. .. c7-d8
9.e5xc5 a8-c6 10.f4xb8 mat
9. .. d7-c7 10.g8xd8 mat
7. .. e6-e8 8.e5xe8 d7-d8
9.e8xd8 c7xd8 10.h8xd8 mat
8. .. c7-d8
9.e8xd8 d7xd8 10.h8xd8 mat
6. .. c7xd7 7.e5xc5 a8-c6 8.f4xb8 mat
7. .. d7-c7 8.c5xc7 mat
7. .. d7-c6 8.e1xe6 d8-d7
9.e6xd7 mat
7. .. e6-c6 8.d1xd7 d8xd7
9.h1xh8 d7-d8 10.c5xc6 c8-d7 11.c6-c7 mat
10. .. a8xc6 11.f4xb8 c8-d7 12.h8xd8 mat
8. .. c8xd7
9.f4-f7 d7-c8 10.c5xc6 a8xc6 11.b1xb8 c8xb8 12.a1-a7 b8-c8
13.f7-f5 d8-d7 14.h1xh8 mat
13. .. c6-d7 14.a7-a8 c8-c7 15.f5-c5 d7-c6 16.c5xc6 mat
13. .. c6-e6 14.f5xe6 d8-d7 15.e6xd7 mat
9. .. d7-d6 10.f7-e7 mat
6. .. e6xd7 7.d1xd7 d8xd7 8.h1xh8 d7-d8
9.f4-f5 c7-d7 10.e5xc5 a8-c6 11.c5xc6 mat
8. .. c7-d8
9.e5xc5 a8-c6 10.f4xb8 mat
9. .. d7-c7 10.c5xc7 mat
7. .. c8xd7 8.e5-e7 d7-c8
9.e7xc7 mat
8. .. d7-c6
9.e7xc7 c6-d5 10.c7xc5 mat
7. .. c7xd7 8.e5xc5 a8-c6
9.f4xb8 mat
8. .. d7-c7
9.c5xc7 mat
8. .. d7-c6
9.c5xc6 c8-d7 10.c6-c7 mat
9. .. a8xc6 10.b1xb8 c8-d7 11.f4-f7 d7-d6 12.f7-e6 d6-c7
13.a1-a7 c6-b7 14.b8xb7 mat
5. .. c7-d7 6.e5xc5 c8-b7 7.e6-c6 d7xc6 8.b5xc6 b7-c8
9.c6-d7 mat
6. .. a8-c6 7.c5xc6 c8-b7 8.a1-a7 mat
6. .. e7xc5 7.e6xd7 d8xd7 8.d1xd7 mat
4. .. d8-d7
5.b5xd7 c8-d8 6.f4-f8 e7xf8 7.e5-e8 f8xe8 8.e1xe8 mat
6. .. e7-e8 7.f8xe8 mat
5. .. e7xd7 6.e5-e8 c7-d8 7.g4xd7 mat
5. .. c7xd7 6.d1xd7 e7xd7 7.e5-e8 mat
4. .. c8-b7
5.b5-c6 b7xc6 6.e5xc5 e7xc5 7.e1-e8 d8xe8 8.f4xc7 c6xc7
9.g4-d7 mat
7. .. d8-d7 8.e8xd7 c7xd7
9.g4xd7 mat
7. .. c7-d7 8.e8xd7 d8xd7
9.g4xd7 mat
4. .. e7-d7
5.b5xd7 d8xd7 6.e5-e8 c7-d8 7.g4xd7 mat
5. .. c7xd7 6.e5xc5 a8-c6 7.c5xc6 mat
4. .. e7-e6
5.d1xd8 c8xd8 6.f4-f8 e6-e8 7.f8xe8 mat
5. .. c8-b7 6.b5-c6 b7xc6 7.e5xc5 mat
5. .. c7xd8 6.e5xc5 d8-c7 7.f4xc7 mat
6. .. c8-b7 7.b5-c6 b7-c8 8.b1xb8 a8xb8
9.a1-a6 b8-b7 10.a6xb7 mat
6. .. a8-c6 7.c5xc6 d8-c7 8.f4xc7 mat
7. .. c8-d7 8.c6-c7 mat
7. .. c8-b7 8.a1-a7 mat
4. .. c7-d7
5.e5xc5 c8-b7 6.b5-c6 b7-c8 7.c6xd7 mat
5. .. a8-c6 6.c5xc6 c8-b7 7.a1-a7 mat
5. .. e7xc5 6.b5xd7 d8xd7 7.g4xd7 mat
3. .. c8-b7 4.b5-c6 mat
3. .. c7xe7 4.e5xc5 e8-c6
5.c5xc6 c8-b7 6.e1xe7 d8-d7 7.e7xd7 mat
5. .. a8xc6 6.f4xb8 c8xb8 7.d1xd8 b8-b7 8.b5-a6 mat
7. .. e7xd8 8.a1-a7 b8-c8
9.b5-a6 c6-b7 10.a7xb7 mat
9. .. c6xa6 10.b1-b8 mat
7. .. c6-c8 8.a1-a8 b8xa8
9.d8xc8 mat
5. .. e7-c7 6.c6xc7 mat
4. .. c8-b7
5.b5-c6 b7-c8 6.c6-d7 mat
4. .. a8-c6
5.a1-a6 b8-b7 6.a6-a8 b7-b8 7.a8xb8 mat
5. .. e7-b7 6.c5xc6 e8xc6 7.f4xb8 c8xb8 8.d1xd8 b7-c8
9.a6-a7 mat
8. .. c6-c8
9.a6-a7 b7xa7 10.f2xa7 b8-a8 11.d8xc8 mat
10. .. b8-b7 11.d8xc8 b7xc8 12.g1-c5 c8-d8
13.a7-b6 c4xb6 14.c5-e7 d8-c8 15.b5-a6 c8-b8 16.e7-b7 mat
12. .. c8-b7
13.c5-c6 b7xa7 14.c6-c7 a7-a8 15.b5-c6 mat
4. .. e7-c7
5.c5xc7 mat
4. .. e7xc5
5.a1-a6 b8-b7 6.a6xa8 b7-b8 7.a8xb8 mat
5. .. a8-b7 6.b5-d7 e8xd7 7.f4xb8 c8xb8 8.b1xb7 b8-c8
9.a6-a8 mat
8. .. d7xb7
9.d1xd8 b7-c8 10.d8xc8 c5xc8 11.a6-a7 mat
9. .. c5-c8 10.f2-a7 b8-a8 11.d8xc8 b7xc8 12.a6xc8 mat
11. .. b7-b8 12.c8xb8 mat
10. .. b7xa7 11.d8xc8 mat
6. .. d8xd7 7.e1xe8 d7-d8 8.e8xd8 mat
5. .. a8xa6 6.b5xa6 b8-b7 7.a6xb7 mat
2. .. e8xe7 3.f5xe7 f8xe7 4.g1-g4 g8-e6
5.g4xe6 d8-d7 6.b5xd7 c8-d8 7.e6xe7 mat
6. .. e7xd7 7.h1xh8 c7-d8 8.e6xd7 mat
6. .. c7xd7 7.d1xd7 e7xd7 8.h1xh8 c8-c7
9.e5xc5 mat
5. .. c8-b7 6.b5-c6 mat
5. .. e7-d7 6.b5xd7 d8xd7 7.h1xh8 c7-d8 8.e6xd7 mat
6. .. c7xd7 7.e5xc5 a8-c6 8.c5xc6 mat
5. .. e7xe6 6.b5-d7 d8xd7 7.h1xh8 d7-d8 8.h8xd8 c7xd8
9.e5xc5 d8-c7 10.c5xc7 mat
9. .. a8-c6 10.f4xb8 mat
9. .. e6-c6 10.e1-e6 d8-d7 11.e6xd7 mat
7. .. c7-d8 8.e5xc5 a8-c6
9.f4xb8 mat
8. .. d7-c7
9.h8xd8 mat
8. .. e6-c6
9.h8xd8 c8xd8 10.f4-f8 d8-c7 11.d1xd7 c7xd7 12.f8-e7 d7-c8
13.c5xc6 a8xc6 14.b1xb8 c8xb8 15.a1-a7 b8-c8 16.e7-f8 c6-e8
17.f8xe8 mat
9. .. d7xd8 10.c5xc6 a8xc6 11.f4xb8 mat
7. .. e6-g8 8.h8xg8 d7-d8
9.f4-f5 c7-d7 10.f5xd7 mat
8. .. c7-d8
9.e5xc5 a8-c6 10.f4xb8 mat
9. .. d7-c7 10.g8xd8 mat
7. .. e6-e8 8.e5xe8 d7-d8
9.e8xd8 c7xd8 10.h8xd8 mat
8. .. c7-d8
9.e8xd8 d7xd8 10.h8xd8 mat
6. .. c7xd7 7.e5xc5 a8-c6 8.f4xb8 mat
7. .. d7-c7 8.c5xc7 mat
7. .. d7-c6 8.e1xe6 d8-d7
9.e6xd7 mat
7. .. e6-c6 8.d1xd7 d8xd7
9.h1xh8 d7-d8 10.c5xc6 c8-d7 11.c6-c7 mat
10. .. a8xc6 11.f4xb8 c8-d7 12.h8xd8 mat
8. .. c8xd7
9.f4-f7 d7-c8 10.c5xc6 a8xc6 11.b1xb8 c8xb8 12.a1-a7 b8-c8
13.f7-f5 d8-d7 14.h1xh8 mat
13. .. c6-d7 14.a7-a8 c8-c7 15.f5-c5 d7-c6 16.c5xc6 mat
13. .. c6-e6 14.f5xe6 d8-d7 15.e6xd7 mat
9. .. d7-d6 10.f7-e7 mat
6. .. e6xd7 7.d1xd7 d8xd7 8.h1xh8 d7-d8
9.f4-f5 c7-d7 10.e5xc5 a8-c6 11.c5xc6 mat
8. .. c7-d8
9.e5xc5 a8-c6 10.f4xb8 mat
9. .. d7-c7 10.c5xc7 mat
7. .. c8xd7 8.e5-e7 d7-c8
9.e7xc7 mat
8. .. d7-c6
9.e7xc7 c6-d5 10.c7xc5 mat
7. .. c7xd7 8.e5xc5 a8-c6
9.f4xb8 mat
8. .. d7-c7
9.c5xc7 mat
8. .. d7-c6
9.c5xc6 c8-d7 10.c6-c7 mat
9. .. a8xc6 10.b1xb8 c8-d7 11.f4-f7 d7-d6 12.f7-e6 d6-c7
13.a1-a7 c6-b7 14.b8xb7 mat
5. .. c7-d7 6.e5xc5 c8-b7 7.e6-c6 d7xc6 8.b5xc6 b7-c8
9.c6-d7 mat
6. .. a8-c6 7.c5xc6 c8-b7 8.a1-a7 mat
6. .. e7xc5 7.e6xd7 d8xd7 8.d1xd7 mat
4. .. d8-d7
5.b5xd7 c8-d8 6.f4-f8 e7xf8 7.e5-e8 f8xe8 8.e1xe8 mat
6. .. e7-e8 7.f8xe8 mat
5. .. e7xd7 6.e5-e8 c7-d8 7.g4xd7 mat
5. .. c7xd7 6.d1xd7 e7xd7 7.e5-e8 mat
4. .. c8-b7
5.b5-c6 b7xc6 6.e5xc5 e7xc5 7.e1-e8 d8xe8 8.f4xc7 c6xc7
9.g4-d7 mat
7. .. d8-d7 8.e8xd7 c7xd7
9.g4xd7 mat
7. .. c7-d7 8.e8xd7 d8xd7
9.g4xd7 mat
4. .. e7-d7
5.b5xd7 d8xd7 6.e5-e8 c7-d8 7.g4xd7 mat
5. .. c7xd7 6.e5xc5 a8-c6 7.c5xc6 mat
4. .. e7-e6
5.d1xd8 c8xd8 6.f4-f8 e6-e8 7.f8xe8 mat
5. .. c8-b7 6.b5-c6 b7xc6 7.e5xc5 mat
5. .. c7xd8 6.e5xc5 d8-c7 7.f4xc7 mat
6. .. c8-b7 7.b5-c6 b7-c8 8.b1xb8 a8xb8
9.a1-a6 b8-b7 10.a6xb7 mat
6. .. a8-c6 7.c5xc6 d8-c7 8.f4xc7 mat
7. .. c8-d7 8.c6-c7 mat
7. .. c8-b7 8.a1-a7 mat
4. .. c7-d7
5.e5xc5 c8-b7 6.b5-c6 b7-c8 7.c6xd7 mat
5. .. a8-c6 6.c5xc6 c8-b7 7.a1-a7 mat
5. .. e7xc5 6.b5xd7 d8xd7 7.g4xd7 mat
3. .. c8-b7 4.b5-c6 mat
3. .. c7xe7 4.e5xc5 c8-b7
5.b5-c6 b7-c8 6.c6-d7 mat
4. .. a8-c6
5.c5xc6 c8-b7 6.a1-a7 mat
5. .. e7-c7 6.c6xc7 mat
4. .. e7-c7
5.c5xc7 mat
4. .. e7xc5
5.b5-d7 d8xd7 6.b1xb8 a8xb8 7.a1-a6 c8-d8 8.f4xb8 c5-c8
9.b8xc8 mat
7. .. b8-b7 8.d1xd7 c8xd7
9.a6xb7 d7-d8 10.f4xf8 c5xf8 11.f2-b6 c4xb6 12.g1xb6 mat
9. .. c5-c7 10.b7xc7 mat
7. .. d7-b7 8.e1-e6 g8xe6
9.a6xe6 b7-d7 10.e6xd7 mat
2. .. c8-b7 3.b5-c6 mat
2. .. c7xe7 3.f5xe7 f8xe7 4.e5xc5 e8-c6
5.c5xc6 c8-b7 6.e1xe7 d8-d7 7.e7xd7 mat
5. .. a8xc6 6.f4xb8 c8xb8 7.d1xd8 b8-b7 8.b5-a6 mat
7. .. e7xd8 8.a1-a7 b8-c8
9.b5-a6 c6-b7 10.a7xb7 mat
9. .. c6xa6 10.b1-b8 mat
7. .. c6-c8 8.a1-a8 b8xa8
9.d8xc8 mat
5. .. e7-c7 6.c6xc7 mat
4. .. c8-b7
5.b5-c6 b7-c8 6.c6-d7 mat
4. .. a8-c6
5.a1-a6 b8-b7 6.a6-a8 b7-b8 7.a8xb8 mat
5. .. e7-b7 6.c5xc6 e8xc6 7.f4xb8 c8xb8 8.d1xd8 b7-c8
9.a6-a7 mat
8. .. c6-c8
9.a6-a7 b7xa7 10.f2xa7 b8-a8 11.d8xc8 mat
10. .. b8-b7 11.d8xc8 b7xc8 12.g1-c5 c8-d8
13.a7-b6 c4xb6 14.c5-e7 d8-c8 15.b5-a6 c8-b8 16.e7-b7 mat
12. .. c8-b7
13.c5-c6 b7xa7 14.c6-c7 a7-a8 15.b5-c6 mat
4. .. e7-c7
5.c5xc7 mat
4. .. e7xc5
5.a1-a6 b8-b7 6.a6xa8 b7-b8 7.a8xb8 mat
5. .. a8-b7 6.b5-d7 e8xd7 7.f4xb8 c8xb8 8.b1xb7 b8-c8
9.a6-a8 mat
8. .. d7xb7
9.d1xd8 b7-c8 10.d8xc8 c5xc8 11.a6-a7 mat
9. .. c5-c8 10.f2-a7 b8-a8 11.d8xc8 b7xc8 12.a6xc8 mat
11. .. b7-b8 12.c8xb8 mat
10. .. b7xa7 11.d8xc8 mat
6. .. d8xd7 7.e1xe8 d7-d8 8.e8xd8 mat
5. .. a8xa6 6.b5xa6 b8-b7 7.a6xb7 mat
3. .. e8xe7 4.e5xc5 c8-b7
5.b5-c6 b7-c8 6.c6-d7 mat
4. .. a8-c6
5.c5xc6 c8-b7 6.a1-a7 mat
5. .. e7-c7 6.c6xc7 mat
4. .. e7-c7
5.c5xc7 mat
4. .. e7xc5
5.b5-d7 d8xd7 6.b1xb8 a8xb8 7.a1-a6 c8-d8 8.f4xb8 c5-c8
9.b8xc8 mat
7. .. b8-b7 8.d1xd7 c8xd7
9.a6xb7 d7-d8 10.f4xf8 c5xf8 11.f2-b6 c4xb6 12.g1xb6 mat
9. .. c5-c7 10.b7xc7 mat
7. .. d7-b7 8.e1-e6 g8xe6
9.a6xe6 b7-d7 10.e6xd7 mat
3. .. c8-c7 4.e5xc5 c7-b7
5.c5-c7 mat
4. .. c7-b6
5.f4-c7 mat
3. .. c8-b7 4.b5-a6 b7-c7
5.e5xc5 mat
4. .. b7-a7
5.f2xc5 b8-b6 6.c5xb6 a7-b8 7.b6-c7 b8xc7 8.e5-c5 mat
6. .. c4xb6 7.g1xb6 mat
5. .. c4-b6 6.c5xb6 b8xb6 7.g1xb6 mat
*** MAT IN 17 ***
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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