Author: Martin Giepmans
Date: 10:30:48 11/13/01
Go up one level in this thread
On November 12, 2001 at 22:24:39, K. Burcham wrote:
>
>shredder5 has a difficult time with the bishop sac. 19.Bxh7 has shown to be a
>better move. but karpov decides to play 19.Ng5. so at least shredder will
>play karpov's GM move. at this time karpov was rated 2725.
>GM Knaak comment below.
>i have one program that plays 19.Bxh7 in four minutes.
>as you can see shredder5 does not see it at all in the analysis below.
>
>
>
> [D] r4rk1/1b1p1ppp/pq2p3/4P3/Pb2B3/5N2/1P2QPPP/2R2RK1 w - -
>
>
>"Missing the chance of a bishop sacrifice on h7. That would have certainly been
>the better option if Karpov had wanted to play for a win. Of course proving this
>with the help of a computer is much easier than finding it at the board.
>[19.Bxh7+! is certainly more promising." comment by GM Rainer Knaak.
>
>
>Engine: Shredder 5
>by Stefan Meyer-Kahlen
> 12.01 0:50 +0.34 19.Rfd1 Rac8 20.Rxc8 Bxc8 21.Qc2 h6 22.Nd2 d5 23.exd6
>Qxd6 24.Bh7+ Kh8 25.Nf3 Qc5 (15.428.992) 303.0
> 13.01 2:50 +0.25 19.Rfd1 Rac8 20.Ng5 Rxc1 21.Rxc1 h6 22.Bxb7 Qxb7 23.Qe4
>Qxe4 24.Nxe4 Rb8 25.Rc7 Ba3 (51.095.927) 300.2
> 13.04 6:06 +0.26++ 19.Ng5 h6 20.Bh7+ Kh8 21.Bb1 d5 22.Qc2 g6 23.Qc7 Qxc7
>24.Rxc7 hxg5 25.Rxb7 Kg8 26.Bxg6 (111.696.274) 305.0
> 13.04 6:28 +0.28 19.Ng5 h6 20.Bxb7 Qxb7 21.Ne4 Qd5 22.Nf6+ gxf6 23.Qg4+ Kh7
>24.Qxb4 Rg8 25.g3 Qxe5 26.Rfe1 Rab8 27.Qe7 Qxb2 (118.334.908) 304.7
> 14.01 9:54 +0.24 19.Ng5 h6 20.Bxb7 Qxb7 21.Ne4 Qd5 22.Rc4 Rab8 23.f4 Qa5
>24.Qd1 Rfd8 25.Rf2 (179.681.517) 302.4
> 15.01 25:31 +0.21 19.Ng5 h6 20.Bxb7 Qxb7 21.Ne4 Qd5 22.Nf6+ gxf6 23.Qg4+ Kh7
>24.Qxb4 Rg8 25.g3 Qxe5 26.Qb7 Kg7 (456.810.827) 298.2
> 16.01 91:55 +0.19 19.Ng5 h6 20.Bxb7 Qxb7 21.Ne4 Qd5 22.Qc4 Rab8 23.Qxd5 exd5
>24.Nc3 Rfe8 25.Nxd5 Rxe5 26.Rfd1 Re2 27.Nxb4 (1.619.262.011) 293.5
>best move: Nf3-g5 time: 141:38.035 minnodes: 1619.262.011
>
>kburcham
My program (amd 1200) plays Bh7x after 2:31 but the score is rather low:
SpiderChess
05 00:00:00 + 0.19 E4xB7 B6xB7 B2-B3 D7-D6 E5xD6 B4xD6 F3-D4
06 00:00:00 + 0.13 E4xB7 B6xB7 B2-B3 A8-D8 F1-D1 D7-D5 E5xD6 B4xD6
00:00:00 + 0.14 F1-D1 B7xE4 E2xE4 D7-D5 E5xD6 B4xD6 B2-B3
07 00:00:00 + 0.20 F1-D1 B7xE4 E2xE4 D7-D5 E5xD6 B4xD6 C1-C6 B6-B4 E4-D4
08 00:00:03 + 0.14 F1-D1 A8-D8 A4-A5 B6-A7 E4xB7 A7xB7 C1-A1 F7-F5
00:00:04 + 0.24 E4xB7 B6xB7 E2-D3 A8-C8 C1xC8 F8xC8 F1-D1 D7-D6 E5xD6
B7-C6 D6-D7
09 00:00:15 + 0.13 E4xB7 B6xB7 E2-D3 G7-G6 F1-D1 A8-D8 D3-B3 D8-C8 C1-C4
C8-B8 B3-E3
00:00:18 + 0.20 F1-D1 B7xE4 E2xE4 D7-D5 E5xD6 B4-C5 C1-C2 C5xD6 B2-B3
A8-C8 F3-D4 C8xC2 E4xC2
10 00:00:44 + 0.11 F1-D1 F8-C8 E4xB7 B6xB7 C1xC8 A8xC8 E2-D3 C8-C7 F3-G5
H7-H6 G5-E4 B7-B6
00:02:31 + 0.43 E4xH7 G8xH7 F3-G5 H7-G6 E2-G4 F7-F5 E5xF6 G6xF6 G5-H7
F6-F7 C1-C4 B4-D6 H7xF8 D6xF8 G4-H5 F7-G8
11 00:06:01 + 0.29 E4xH7 G8xH7 F3-G5 H7-G6 E2-G4 F7-F5 E5xF6 G6xF6 G5-H7
F6-F7 C1-C4 A6-A5 H7xF8 A8xF8 F1-D1 F7-E8 G4xG7
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