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

Author: Jeff Lischer

Date: 20:18:43 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

Gandalf 6.0 does very well on this position. It takes about 30 sec on my P4,
3GHz for it to find Nf6. Then it oscillates for awhile between Nf6 and Nc5
before settling on Nc5 in about 2:00.

Gandalf 6.0:
 13/39	01:52	  -0.41	Nd7f6 Be6xc8 Rf8xc8 b2b3 Nc4b6 Ng3f5 Nb6xd5 Bc1b2 Qc7d7
Nf5xe7 Nd5xe7 Nf3g5 Kh8g8 f2f4 e5xf4 Bb2xf6 g7xf6
 13/40+	01:58	  -0.41	Nd7c5 Be6xc8
 13/40	02:03	  -0.38	Nd7c5 Be6xc8 Qc7xc8 b2b3 Nc4b6 Bc1g5 Qc8d8 Bg5e3 Nc5d7
Ng3e4 Nb6xd5 Ra1c1 Nd7f6 Be3d2 Nf6xe4 Re1xe4
 14/42	03:21	  -0.32	Nd7c5 Be6xc8 Qc7xc8 b2b3 Nc4b6 Bc1g5 Qc8d8 Bg5e3 Nc5d7
Ng3e4 Nb6xd5 Ra1c1 Nd7f6 Ne4c3 Nd5xe3 Re1xe3
 15/46	06:00	  -0.16	Nd7c5 Be6xc8 Qc7xc8 b2b3 Nc4b6 Bc1g5 Qc8d8 Bg5e3 Nc5d7
Ng3e4 Nb6xd5 Ra1c1 Nd7f6 Ne4c3 Nd5xe3 Re1xe3 Qd8d7





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