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Subject: Re: the reason why Anaconda canīt draw against Hydra...

Author: Gabor Szots

Date: 06:40:38 03/01/05

Go up one level in this thread


On March 01, 2005 at 08:47:11, Thomas Lagershausen wrote:

>[D]2r2r1k/1bqnb1pp/p2pB3/1p1Pp3/2n5/5NNP/PP3PP1/R1BQR1K1 b - - 4 20
>
>...is the lack of positional knowledge. This counts for most of curent
>chessprograms.
>
>In the last round of Paderborn Anaconda reaches this position with the black
>pieces against Hydra and lost without any real resistance.
>
>But it is not difficult to see that black has to play against the weak pawn on
>d5 to get enough counterplay. So, the sacrifice of the exchange by 20...Nc5 or
>20...Nf6 give black the chance to free his game and equalize the position.
>
>Please notice that my intention is to help the programers and not to show how
>weak chessprograms are playing chess.
>
>Have fun and improve your chessprograms.
>
>TL


Hi Thomas,

Shredder 9 has been analyzing the position now for 10 minutes, and cannot come
up with your idea (see below).
I (a 2050 Élõ player) think the case is not so simple. The exchange sacrifice
may free the position but equalize? What does black get in exchange? I am sure
that sooner or later the material disadvantage will tell.


2r2r1k/1bqnb1pp/p2pB3/1p1Pp3/2n5/5NNP/PP3PP1/R1BQR1K1 b - -

Engine: Shredder 9 UCI (48 MB)
von Stefan Meyer-Kahlen

9/24   0:01   -0.40    1...Tce8 2.b3 Scb6 3.La3 Sf6 (258.472) 173

9/24   0:01   -0.39++  1...Lf6 (331.065) 170

9/24   0:02   -0.39    1...Lf6 2.Se4 (429.288) 168

10/23  0:04   -0.63    1...Lf6 2.Se4 Tce8 3.b3 Sc5 4.Sxc5 (683.780) 167

10/23  0:04   -0.62++  1...Scb6 (772.321) 167

10/27  0:04   -0.62    1...Scb6 2.Lg5 Ld8 3.Tc1 Sc4 4.b3 (789.646) 167

10/27  0:04   -0.61++  1...Tce8 (809.024) 168

10/27  0:05   -0.37    1...Tce8 2.b3 Scb6 3.Sg5 Lxg5 4.Lxg5 Sc5
                       5.Tc1 Db8 6.Txc5 dxc5 7.Se4 Dc7 (895.144) 168

10/27  0:06   -0.36++  1...Tb8 (1.039.982) 168

10/27  0:06   -0.33    1...Tb8 2.b3 Sc5 3.bxc4 Sxe6 4.dxe6 Lxf3
                       5.gxf3 Dxc4 6.Db3 (1.068.264) 169

11/22  0:07   -0.51    1...Tb8 2.b3 Scb6 3.La3 b4 4.Tc1 Dd8
                       5.Lxb4 Lxd5 6.Lxd5 (1.331.286) 169

11/23  0:08   -0.50++  1...Scb6 (1.516.564) 169

11/25  0:09   -0.37    1...Scb6 2.Lg5 Txf3 3.Lxe7 Txg3
                       4.fxg3 Lxd5 5.Dg4 Dc2 6.Lxd5 Dc5+
                       7.Kh2 Dxd5 (1.655.405) 171

11/25  0:09   -0.36++  1...Tce8 (1.689.495) 171

11/25  0:10   -0.11    1...Tce8 2.b3 Scb6 3.Sg5 Lxg5 4.Lxg5 Sc5
                       5.Tc1 Db8 6.Txc5 dxc5 7.Se4 Da8
                       8.Sc3 (1.813.985) 172

12/26  0:12   -0.36--  1...Tce8 2.b3 (2.235.323) 172

12/26  0:13   -0.45    1...Tce8 2.b3 Scb6 3.Se4 Sf6 4.Sxf6 Lxf6
                       5.La3 Sc8 6.Tc1 Db6 7.Dd2 Le7 8.Lb2 (2.408.105) 173

13/27  0:27   -0.21    1...Tce8 2.b3 Scb6 3.Le3 Sf6 4.Tc1 Dd8
                       5.Sg5 Lxd5 6.Sf5 h6 (4.592.841) 167

14/27  0:38   -0.46--  1...Tce8 2.b3 (6.363.561) 166

14/27  0:41   -0.47    1...Tce8 2.b3 Scb6 3.Se4 Sc5 4.Sxc5 dxc5
                       5.Lg5 Dd6 6.Lxe7 Txe7 7.Txe5 Lxd5
                       8.Txd5 (6.980.965) 168

15/36  1:30   -0.36    1...Tce8 2.b3 Scb6 3.Se4 Sf6 4.Sfg5 Lxd5
                       5.Lxd5 Sbxd5 6.Sxf6 Sxf6 7.Se6 Dc3
                       8.Ld2 (14.885.124) 164

16/34  2:22   -0.52    1...Tce8 2.b3 Scb6 3.Se4 Sf6 4.Sfg5 Sxe4
                       5.Sxe4 Dd8 6.Le3 Lh4 7.Dd3 Lc8
                       8.Lxc8 (23.278.215) 163

17/35  5:11   -0.68    1...Tce8 2.b3 Scb6 3.Le3 La8 4.Se4 Sf6
                       5.Sxf6 Lxf6 6.Dd2 e4 7.Tac1 Db7
                       8.Tc6 Txe6 9.Lxb6 Tee8 10.Sg5 Le5 (50.524.299) 162




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