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Subject: Re: Hard test position for chess programs( Steve Ham-Nimzo7.32)

Author: Ed Schröder

Date: 15:18:25 06/16/00

Go up one level in this thread

On June 16, 2000 at 14:44:39, blass uri wrote:

>[D]2rr4/1b1n1k2/3Bp3/pp4p1/2pPPp2/P4P2/1PB2KP1/R4R2 b - - 0 1
>
>The test is to avoid c3 that is not good because of b4.
>
>Nimzo7.32 failed and played c3 after 18 hours and now some moves after c3 it had
>to admit that Ham has more than 1 pawn advantage.
>
>I am interested in the results of other chess programs.
>
>Hiarcs7.32 could avoid c3 in a short time but it shows a wrong main line after
>90 minutes on pentiumIII450.
>
>Nf6 Be5 c3 b4 Nd7 Bd6 and this line is the same as the game line c3 b4
>
>Hiarcs evaluates the position as a small 0.15 pawns advantage for black(depth
>14/30) after almost 2 hours it did most of iteration 14.
>
>Crafty17.10(engine for hiarcs) after more than 3 hours suggests c3 with 0.00
>evaluation and expect the wrong move bxc3
>
>Uri

Rebel Century 2.0 (beta) running under EPD2DIAG plays 1..Nb6 after 2:59
but the score compared to 1..c3 is pretty small.

00:00  06.01  0.00  1..c3 2.Rfb1 Nb6 3.Bc5 Nd7 4.Bd6 Nb6 5.Bc5 Nd7
00:01  07.00  0.03  1..c3 2.Rab1 Nb6 3.Rh1 Bxe4 4.Bxe4 Rxd6 5.Rh7+ Kf6
00:02  08.00  0.00  1..c3 2.b4 Nf6 3.Be5 Nd7 4.Bd6 Nf6 5.Be5 Nd7
00:05  09.00  0.00  1..c3 2.b4 Rc4 3.Rad1 Nb6 4.Bc5 Nd7 5.Bd6 Nb6 6.Bc5 Nd7
00:11  10.00  -0.17  1..c3 2.b4 Rc4 3.bxa5 Nb8 4.Rh1 Rxd4 5.Rh7+ Kg6 6.Rxb7 Rd2+
00:18  10.02  -0.13  1..Nf6 2.e5 Nd5 3.Rh1 Rh8 4.Rxh8 Rxh8 5.Be4 Rh2 6.Rc1 Bc6
00:32  11.00  -0.13  1..Nf6 2.e5 c3 3.bxc3 Ne8 4.Rac1 Nxd6 5.exd6 Rxd6 6.Rh1 Bd5
7.Rh7+ Kf6
00:39  11.01  -0.08  1..c3 2.b4 Nb6 3.Bc5 Nd7 4.Rfd1 Nxc5 5.bxc5 Kg6 6.Rab1
01:02  12.00  -0.11  1..c3 2.b4 Nb6 3.Bc5 Nd7 4.Rad1 Nxc5 5.bxc5 Rh8 6.Rh1 Bc6
02:17  13.00  -0.13  1..c3 2.b4 Rc4 3.Rad1 Nf6 4.Bc5 Nd7 5.Rh1 Nxc5 6.dxc5 Rxd1
7.Rxd1 Ke7 8.Rh1 g4
02:59  13.04  -0.10  1..Nb6 2.e5 c3 3.bxc3 Nc4 4.Rac1 Nxd6 5.exd6+ Rxd6 6.Rh1
Ba6 7.Bd3
04:30  14.00  -0.11  1..Nb6 2.e5 c3 3.bxc3 Nc4 4.Rac1 Nxd6 5.exd6 Rxd6 6.Rh1 Ba6
7.Rh7
11:55  15.00  -0.07  1..Nb6 2.e5 Nd5 3.Rh1 Rh8 4.Be4

PC: Ahtlon 600, 60 MB hash table.

Ed

• Re: Hard test position for chess programs( Steve Ham-Nimzo7.32) Hans Gerber 16:44:14 06/16/00
  • Re: Hard test position for chess programs( Steve Ham-Nimzo7.32) Jeff Lischer 09:37:39 06/17/00
    • Re: Hard test position for chess programs( Steve Ham-Nimzo7.32) Ernst Walet 10:42:41 06/19/00
    • Re: Hard test position for chess programs( Steve Ham-Nimzo7.32) Jeff Lischer 15:15:07 06/17/00
    • Re: Hard test position for chess programs( Steve Ham-Nimzo7.32) blass uri 09:44:21 06/17/00
      • Re: Hard test position for chess programs( Steve Ham-Nimzo7.32) Jeff Lischer 15:10:24 06/17/00
        • Re: Hard test position for chess programs( Steve Ham-Nimzo7.32) Ed Schröder 00:02:49 06/18/00

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