Author: Dann Corbit
Date: 15:54:46 01/19/01
Go up one level in this thread
On January 19, 2001 at 18:30:14, Dann Corbit wrote:
>On January 19, 2001 at 15:31:11, Thomas Lagershausen wrote:
>
>>In the following game white has a winning knightsacrifice after the important
>>pawnmoves 15.b4! and 16.b5!.Is a program able to find the plan?
>>
>>[Event "40/120"]
>>[Site "?"]
>>[Date "1992.11.25"]
>>[Round "4"]
>>[White "Lagershausen"]
>>[Black "Fidelity Avantgard#6"]
>>[ECO "A21"]
>>[Result "1-0"]
>>
>>1. c4 e5 2. Nc3 Nc6 3. Nf3 d6 4. d4 Bg4 5. d5 Nce7 6. e4
>>Ng6 7. Be2 Nf4 8. Bxf4 exf4 9. Nd4 Bd7 10. Bg4 Ne7 11. O-O
>>Qc8 12. Bxd7+ Qxd7 13. Qb3 O-O-O 14. Qa3 Kb8 15. b4 g6
>>16. b5 Bg7 17. Nc6+ bxc6 18. bxc6 Nxc6 19. Rab1+ Ka8
>>20. Nb5 Bd4 21. dxc6 Qxc6 22. Nxd4 Qd7 23. Qa6 c5 24. Nb5
>>Rb8 25. Nc3 f5 26. Nd5 fxe4 27. Nb6+ Rxb6 28. Rxb6 Qc8
>>29. Qa4 Qe8 30. Qxe8+ Rxe8 31. Rxd6 1-0
>
>Here is the position in question:
>[D]1k1r1b1r/pppqnppp/3p4/3P4/2PNPp2/Q1N5/PP3PPP/R4RK1 w - - bm b4;
Yace won't find it in tournament time control:
title Thomas Lagershausen on January 19, 2001 at 15:31:11
Stored 2 learned positions into hash table
solution b4
usetime = 599.00, mintime = 599.00 maxtime = 599.00 tl 599.00 ml 0
2 0.001 -7.91 1t 1.Qxa7+ Kxa7 {-931}
9 0.001 0.83 1t 1.Qa5 {-10}
44 0.001 0.83 1. 1.Qa5 {-10}
94 0.002 0.68 2t 1.Qa5 f6 {-10}
464 0.003 0.71 2t+ 1.Ncb5 h5 {-10}
585 0.003 0.89 2t 1.Ncb5 a6 {-10}
805 0.004 0.89 2. 1.Ncb5 a6 {-10}
999 0.007 1.01 3t 1.Ncb5 a6 2.Qa5 {-10}
2182 0.009 1.01 3. 1.Ncb5 a6 2.Qa5 {-10}
3605 0.013 0.79 4t 1.Ncb5 a6 2.Qa5 f6 {-10}
6749 0.021 0.79 4. 1.Ncb5 a6 2.Qa5 f6 {-10}
13305 0.038 0.83 5t 1.Ncb5 a6 2.Qa5 f6 3.Nc3 {-10}
34919 0.078 0.83 5. 1.Ncb5 a6 2.Qa5 f6 3.Nc3 {-10}
51938 0.123 0.78 6t 1.Ncb5 a6 2.Qa5 f6 3.Ne6 Kb8 {-10}
147667 0.364 0.78 6. 1.Ncb5 a6 2.Qa5 f6 3.Ne6 Kb8 {-10}
243029 0.574 0.76 7t 1.Ncb5 a6 2.Rfe1 Qg4 3.Nc3 f5 4.e5 dxe5 5.Rxe5
{-10}
688178 1.407 0.76 7. 1.Ncb5 a6 2.Rfe1 Qg4 3.Nc3 f5 4.e5 dxe5 5.Rxe5
{-10}
896782 1.938 0.72 8t 1.Ncb5 a6 2.Rfe1 Kb8 3.Nc3 f6 4.Qa5 Qg4 {-10}
2115447 4.805 0.73 8t+ 1.Rfe1 Qg4 2.c5 dxc5 3.Qxc5 Qxg2+ 4.Kxg2 b6
5.Qb4 a6 {911}
2257486 5.139 0.75 8t 1.Rfe1 Qg4 2.c5 dxc5 3.Qxc5 Qh4 4.Nf3 Qf6
5.Rac1 {-10}
2752046 6.345 0.76 8t+ 1.Rac1 Qg4 2.c5 Rd8 3.cxd6 a6 4.dxe7 Qd7 {410}
2919646 6.748 0.77 8t 1.Rac1 f5 2.Rfe1 fxe4 3.Rxe4 g5 4.Ncb5 a6
5.Rce1 {-10}
3354824 7.685 0.77 8. 1.Rac1 f5 2.Rfe1 fxe4 3.Rxe4 g5 4.Ncb5 a6
5.Rce1 {-10}
5194511 12.163 0.74 9t 1.Rac1 h6 2.Ncb5 a6 3.c5 dxc5 4.Rxc5 Kb8 5.Nc3
Rd8 {-10}
15336536 35.222 0.74 9. 1.Rac1 h6 2.Ncb5 a6 3.c5 dxc5 4.Rxc5 Kb8 5.Nc3
Rd8 {-10}
19517045 45.999 0.77 10t 1.Rac1 Qd8 2.Rfe1 Bd7 3.Ndb5 Bxb5 4.Nxb5 a6
5.Nd4 Qd7 6.Qa5 Rcd8 {0}
35335660 1:22.7 0.77 10. 1.Rac1 Qd8 2.Rfe1 Bd7 3.Ndb5 Bxb5 4.Nxb5 a6
5.Nd4 Qd7 6.Qa5 Rcd8 {0}
51169204 2:01.0 0.71 11t 1.Rac1 f6 2.Ncb5 a6 3.c5 dxc5 4.Rxc5 Kb8 5.Nc3
Ka8 6.Qa5 Bf7 {-10}
55338382 2:11.5 0.72 11t+ 1.Rfe1 Kb8 2.e5 dxe5 3.Rxe5 Ng6 4.Re2 f6 5.Rae1
Rd8 6.Ncb5 h5 {-10}
73835252 2:53.7 0.73 11t 1.Rfe1 Ng6 2.Ncb5 a6 3.Rac1 Ne5 4.c5 dxc5
5.Rxc5 Kb8 6.Nc3 f6 {-10}
129125428 5:02.2 0.73 11. 1.Rfe1 Ng6 2.Ncb5 a6 3.Rac1 Ne5 4.c5 dxc5
5.Rxc5 Kb8 6.Nc3 f6 {-10}
147906167 5:47.1 0.68 12t 1.Rfe1 Ng6 2.b4 Qg4 3.Ncb5 Bxb5 4.Nxb5 a6 5.h3
Qg5 6.Qa5 Nh4 7.g4 {0}
156206235 6:09.3 0.69 12t+ 1.Rac1 f6 2.Ncb5 a6 3.c5 dxc5 4.Rxc5 Kb8 5.Nc3
Nxd5 6.exd5 b6 7.Nc6+ Ka8 {250}
177184977 7:06.2 0.77 12t 1.Rac1 f6 2.Ncb5 a6 3.c5 dxc5 4.Rxc5 Kb8 5.Nc3
Bf7 6.Qa5 b6 7.Qb4 {-10}
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