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Subject: Re: Which Programs will Take the Pawn and Lose in this Position?

Author: Len Eisner

Date: 09:47:41 01/02/00

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On January 02, 2000 at 12:33:42, Anthony Boynes wrote:

>For some reason I could not reply directly to your second post in this thread.
>
>I think Chessbase mangled something in their version of Crafty.  I use the
>compiled version directly from Bob's ftp site.  I ran it again, and here is the
>log file:
>
>
>hash table memory = 48M bytes.
>pawn hash table memory = 16M bytes.
>EGTB access enabled
>using tbpath=./TB
>5 piece tablebase files found
>178kb of RAM used for TB indices and decompression tables
> game/10 minutes primary time control
>
>Crafty v17.5
>
>White(1): analyze
>              clearing hash tables
>               book moves {e4, d4}
>               book   0.0s     47%    e4! c5
>setboard 2k4r/ppp2Qpp/8/q1b1p1P1/1r2Bn1P/1P1P4/P1P2P2/2KR2NR w - - 0 18
>
>              clearing hash tables
>              time limit 15.00 (1:30)
>         nss  depth   time  score   variation (1)
>                6->   0.85   1.98   1. Qxg7 Re8 2. Kb1 Qb5 3. Qxh7 Bxf2
>                7     2.06   2.24   1. Qxg7 Rd8 2. Qxh7 Bxf2 3. Kb1 Qc5
>                                    4. g6
>                7->   2.82   2.24   1. Qxg7 Rd8 2. Qxh7 Bxf2 3. Kb1 Qc5
>                                    4. g6
>                8     5.90   2.25   1. Qxg7 Re8 2. Kb1 Bxf2 3. Qxh7 Kb8
>                                    4. Qd7 Rf8
>                8->   9.86   2.25   1. Qxg7 Re8 2. Kb1 Bxf2 3. Qxh7 Kb8
>                                    4. Qd7 Rf8
>                9    16.87   2.24   1. Qxg7 Re8 2. Kb1 Qa3 3. Qf7 Rf8 4.
>                                    Qxh7 Bxf2 5. Qe7
>                9->  28.63   2.24   1. Qxg7 Re8 2. Kb1 Qa3 3. Qf7 Rf8 4.
>                                    Qxh7 Bxf2 5. Qe7
>               10     1:03     --   1. Qxg7
>               10     1:32   0.94   1. Qxg7 Qa3+ 2. Kd2 Rf8 3. Bxh7 Rb5
>                                    4. Rc1 Qxa2 5. Kd1 Nh5 6. Qh6
>               10     2:40   1.22   1. Kb1 Qa3 2. Rd2 Bd4 3. c3 Bxc3 4.
>                                    Rc2 Rxe4 5. dxe4 Qc5 6. Qxg7
>White(1): end
>execution complete.

That's interesting.  Do you happen to have version 17.04 handy?  It would be
interesting to know if it is a problem with the Chessbase version or an
improvement Bob made to 17.5.

Len



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