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Subject: Re: Difficult? Position

Author: Ernst Walet

Date: 00:43:51 03/26/00

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On March 25, 2000 at 15:02:50, James Robertson wrote:

>Yesterday Insomniac played a game against CSTal(C). Who knows what engine it was
>using (it wasn't LG, as the notes said). During one of the games, Insomniac
>reached this position with black and played ... Nc4. At the time I suspected
>Bxh3 might be better, and confirmed this after the game.
>
>r1b1r1k1/pp3ppp/3b4/3pn3/3N3q/2P1B2P/PP2BPP1/R2Q1RK1 b - - bm Bxh3;
>
>1. ... Bxh3 2. gxh3? Qxh3 3. Bf4 {Re1? Nd3!} Nf3+ 4. Nxf3 Bxf4 5. Qxd5 Re6 6.
>Qxe6 Qxe6 and black wins.
>
>Unfortunately, this position completely stumped Insomniac. What do other
>programs think?
>
>James

Shredder4 plays Bxh3 in 13 seconds.

 6.02   0:01.43  -0.30   Nc4 Bxc4 dxc4 Qa4 Qe4 Rad1 f6 Qxc4+ Be6 (133.619) 93.1
 6 ->   0:02.77  -0.30   Nc4 Bxc4 dxc4 Qa4 Qe4 Rad1 f6 Qxc4+ Be6 (262.065) 94.4
 7.01   0:03.35  -0.05++ Nc4 Bxc4 dxc4 Qa4 Bxh3 Kh1 Rxe3 Qe8+ Raxe8 (311.064)
92.7
 7.01   0:03.90  +0.18   Nc4 Bxc4 dxc4 Nb5 Bb8 Nd6 Rd8 Bc5 (366.026) 93.7
 7 ->   0:04.88  +0.18   Nc4 Bxc4 dxc4 Nb5 Bb8 Nd6 Rd8 Bc5 (465.121) 95.1
 8.01   0:06.72  -0.07-- Nc4 Bxc4 dxc4 Qf3 Bxh3 gxh3 Rxe3 fxe3 Qg4+ Qxg4
(649.815) 96.6
 8.01   0:07.95  -0.07   Nc4 Bxc4 dxc4 Qf3 Qe4 Nf5 Bxf5 Kh1 Qxf3 (765.406) 96.2
 8.09   0:13.75  -0.06++ Bxh3 gxh3 Qxh3 Re1 Nc4 Rf1 (1.306.555) 94.9
 8.09   0:14.45  -0.01   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Bxf3 Bxf4 Re1 Qh2+ Kf1
(1.385.713) 95.8
 8 ->   0:15.91  -0.01   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Bxf3 Bxf4 Re1 Qh2+ Kf1
(1.537.351) 96.6
 9.01   0:21.18  +0.11   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3 Rxe1+
Nxe1 (2.031.546) 95.9
 9 ->   0:26.13  +0.11   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3
(2.535.364) 97.0
10.01   0:44.70  +0.17   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3 Rxe1+
Nxe1 Qh2+ (4.293.639) 96.0
10 ->   0:52.49  +0.17   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3 Rxe1+
(5.052.499) 96.2
11.01   1:35.74  +0.34   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3 Rxe1+
Nxe1 (9.156.801) 95.6
11 ->   2:00.02  +0.34   Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3 Rxe1+
(11.470.988) 95.5
12.01   4:06.87  +0.59++ Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3 Rxe1+ Bf1
(23.270.426) 94.2
12.01   7:17.04  +1.09++ Bxh3 gxh3 Qxh3 Bf4 Nf3+ Nxf3 Bxf4 Re1 Re6 Bd3 Rxe1+ Bf1
(41.649.494) 95.2
12.01  15:04.52  +1.79   Bxh3 Re1 Bg4 Bxg4 Nxg4 Nf3 Bh2+ Kh1 Qh5 Bd4 a6 Qd3
(86.980.266) 96.1
12 ->  15:17.05  +1.79   Bxh3 Re1 Bg4 Bxg4 Nxg4 Nf3 Bh2+ Kh1 Qh5 Bd4 a6 Qd3
(88.301.538) 96.2

Ernst.



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