Author: Howard Exner
Date: 01:59:37 01/20/01
Go up one level in this thread
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 Century 3's Logfile. It would play b4 at 3:17 0n an
Athlon 900 with the intention of following up with b5.
+---+---+---+---+---+---+---+---+ Pos 1 - BMB4.EPD
8 | | *K| | *R| | *B| | *R|
+---+---+---+---+---+---+---+---+ 00:00:00 00:00:00
7 | *p| *p| *p| *Q| *N| *p| *p| *p|
+---+---+---+---+---+---+---+---+
6 | | | | *p| | | | | Time infinite
+---+---+---+---+---+---+---+---+ Hash 80 Mb
5 | | | | p | | | | | Engine Rebel Century 3.0
+---+---+---+---+---+---+---+---+ Personality REBEL.ENG
4 | | | p | N | p | *p| | | anti-GM Off
+---+---+---+---+---+---+---+---+ Tactics Off
3 | Q | | N | | | | | | Bluff Chess Off
+---+---+---+---+---+---+---+---+ Style Normal
2 | p | p | | | | p | p | p | Strength Strongest
+---+---+---+---+---+---+---+---+ Search Normal Search
1 | R | | | | | R | K | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
1k1r1b1r/pppqnppp/3p4/3P4/2PNPp2/Q1N5/PP3PPP/R4RK1 w - -
[Event "?"]
[Site "?"]
[Date "??.??.????"]
[Round "?"]
[White "Pos 1"]
[Black "BMB4.EPD"]
[Result "*"]
[WhiteElo "?"]
[BlackElo "?"]
[FEN "1k1r1b1r/pppqnppp/3p4/3P4/2PNPp2/Q1N5/PP3PPP/R4RK1 w - - 0 1"]
1.*
00:00:00 1.00 -2.75 1.Ne6 fxe6
00:00:00 1.03 -2.32 1.Nc6+ bxc6
00:00:00 1.04 -0.32 1.Nf5 Nxf5 2.exf5 Qxf5
00:00:00 1.05 0.88 1.Rae1
00:00:00 2.00 0.70 1.Rae1 h5
00:00:00 2.01 0.72 1.b4 h5
00:00:00 2.03 0.87 1.Ncb5 a6
00:00:00 3.00 0.58 1.Ncb5 a6 2.Nc3
00:00:00 3.01 0.79 1.b4 h5 2.Ncb5
00:00:00 4.00 0.80 1.b4 h5 2.Ncb5 a6
00:00:00 5.00 0.71 1.b4 h5 2.Rae1 g5 3.Ncb5
00:00:00 6.00 0.51 1.b4 g5 2.Nf3 Bh6 3.Nb5 a6
00:00:01 6.29 0.55 1.Nf3 g6 2.e5 a6 3.Rae1 dxe5
00:00:01 7.00 0.46 1.Nf3 g6 2.e5 h5 3.Rae1 Bg7 4.exd6
cxd6 (1)
00:00:02 8.00 0.48 1.Nf3 g6 2.Rae1 Bg7 3.Ne2 Be5 4.g3
fxg3 5.fxg3 (2)
00:00:04 8.05 0.50 1.Rad1 Re8 2.b4 g5 3.Ncb5 a6 4.Nc3
00:00:07 9.00 0.55 1.Rad1 Re8 2.b4 g5 3.c5 dxc5 4.bxc5
Bg7 5.c6 Qd6 (6)
00:00:16 10.00 0.38 1.Rad1 Re8 2.Nf3 g6 3.Rfe1 Bg7 4.Ne2
Bh6 5.b4 g5 (12)
00:00:20 10.01 0.44 1.Nf3 Ng6 2.Rac1 Be7 3.Rce1 Bf6
4.b4 h5 5.Nb5 (16)
00:00:47 11.00 0.38 1.Nf3 Ng6 2.Rac1 Be7 3.b4 Ne5 4.Nb5
a6 5.Nbd4 h5 6.Rfe1 (41)
00:02:30 12.00 0.32 1.Nf3 g5 2.Nxg5 Rg8 3.h4 Qg4 4.Qa5
a6 5.b4 Qxh4 (121)
00:02:46 12.01 0.34 1.Rad1 g5 2.c5 Bg7 3.Ncb5 a6 4.c6
Qc8 5.cxb7 Qxb7 6.Nc3 h5 7.b4 g4 (150)
00:03:17 12.02 0.34 1.b4
00:03:22 12.02 0.45 1.b4 g5 2.b5 Ka8 3.Rab1 Nc8 4.Nf5
Ne7 5.Nxe7 Bxe7 (197)
Positions : 129.035.887
Nodes per second : 405.773
Extensions (checks) : 4.282.293 (3%)
Extensions (captures) : 886.240 (0%)
Extensions (king safety) : 26.632 (0%)
Extensions (on depth) : 0 (0%)
Extensions (remaining) : 212.435 (0%)
Extensions (total) : 5.407.600 (4%)
Hash Table : 1.670.577 1.497.293 (89%)
Average depth : 13
Deepest depth : 46
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
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