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Subject: Re: How long to find White's winning move?

Author: Andrew Williams

Date: 02:54:27 01/03/02

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On January 02, 2002 at 18:29:56, Roy Eassa wrote:

>How long does it take your program/engine to find White's winning move (and to
>achieve a score that shows the program understands that White is winning)?
>
>[D] r4b1k/pp3Ppp/n1p5/2q1B3/2r5/6RP/PP2Q1P1/5R1K w - - 0 1

PostModernist on an Athlon 1200 takes 10 seconds to find b4, but it's
32 seconds before a convincing positive score appears.

 1>  -281     0         2   1.a3
 1b  -265     0         6   1.b3
 1b  -259     0        51   1.Re1
 1b  -249     0        90   1.Qh5
 1=  -211     0       242   1.Qh5
 2>  -211     0       244   1.Qh5
 2=  -211     0       304   1.Qh5
 3>  -278     0       885   1.b3 Rh4
 3b  -273     0      1067   1.Rd1
 3=  -267     0      1373   1.Rd1 b6
 4>  -267     0      3032   1.Qh5 h6 2.Re1
 4=  -235     0      3640   1.Qh5 Re4 2.Rf5
 5>  -307     0     13649   1.Re1 Rc1 2.Rxc1 Qxc1 3.Kh2
 5b  -284     0     16415   1.Rg5
 5=  -278     0     17060   1.Rg5
 6>  -278     0     19639   1.Rg5
 6=  -224     0     43335   1.Rg5 Rc2 2.Qh5 Qc4 3.Ra1
 7>  -265     1    178732   1.Rg5 Rc2 2.Qg4 Qc4 3.Qxc4 Rxc4 4.Re1
 7b  -251     1    196414   1.Re1 b5 2.Qh5 Rc1 3.Rxc1 Qxc1 4.Kh2 Rd8
 7=  -251     1    228509   1.Re1 b5 2.Qh5 Rc1 3.Rxc1 Qxc1 4.Kh2 Rd8
 8>  -251     2    296186   1.Re1 Nb4 2.Qh5 Rc1 3.Bxg7 Bxg7 4.Qxc5 Rxc5 5.Re8
 8=  -203     4    673520   1.Re1 Rc1 2.Bxg7 Bxg7 3.Qe8 Qf8 4.Qxf8 Rxf8
                            5.Rxc1 Rxf7
 9>  -203     5    799689   1.Re1 Rc1 2.Bxg7 Bxg7 3.Qe8 Qf8 4.Qxf8 Rxf8
                            5.Rxc1 Rxf7 6.b3
 9b  -198     6    974385   1.Rg5 Rc2 2.Qd3 Qc4 3.Rxg7 Bxg7 4.Bxg7 Kxg7
                            5.Qg3 Kf8 6.Qd6
 9b  -148    10   1375332   1.b4 Rxb4 2.Rg5 Qc4 3.Bxg7 Bxg7 4.f8=Q Bxf8 5.Qe5
 9=    57    14   2106850   1.b4 Nxb4 2.Qb2 h6 3.Bxg7 Kh7 4.Qf6 Qh5 5.Rf5 Bxg7
                            6.Qxg7
10>    57    15   2210563   1.b4 Nxb4 2.Qb2 h6 3.Bxg7 Kh7 4.Qf6 Qh5
                            5.Bxf8 Rxf8 6.Qg7
10=   217    32   5303697   1.b4 Rxb4 2.Rg5 b5 3.Bxg7 Bxg7 4.Rxc5 Nxc5
                            5.Qe8 Rxe8 6.fxe8=Q
11>   217    34   5606383   1.b4 Rxb4 2.Rg5 Rd4 3.Bxg7 Bxg7 4.Rxc5 Nxc5
                            5.Qe8 Rxe8 6.fxe8=Q

Andrew



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