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Subject: Re: Pawn endgame test position

Author: Robert Hyatt

Date: 06:36:23 11/24/04

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On November 24, 2004 at 09:13:08, Jason Kent wrote:

>In this test without TBs, Ruffian 1.05 and Aristarch 4.50 solve this draw in 2
>seconds flat.
>
>Delfi's eval is -0.31 in 1 second and Chessmaster solves in about 20 seconds.
>
>Shredder 8, List512, and Crafty, have problems seeing the draw.
>
>[D]8/4k2p/7P/4P3/5K2/8/8/8 b - - 0 51


I get a draw score in 2 seconds on my 750mhz laptop.  Perhaps you have something
broken, such as a position.bin file with old information:

               26->   1.75   1.74   1. ... Ke6 2. Ke4 Ke7 3. Kf5 Kf7 4.
                                    e6+ Ke8 5. Kf6 Kf8 6. Ke5 Ke7 7. Kd5
                                    Ke8 8. Ke4 Kf8 9. Kf4 Ke8 <HT>
               27     1.78     -1   1. ... Ke6!!
               27     1.81     -3   1. ... Ke6!!
               27     2.25  -0.01   1. ... Ke6 2. Kg5 Kxe5 3. Kg4 Kd4 4.
                                    Kf5 Kd5 5. Kf6 Kd6 6. Kg7 Ke6 7. Kxh7
                                    Kf7 8. Kh8 Kg6 9. h7 Kf7
               27->   2.27  -0.01   1. ... Ke6 2. Kg5 Kxe5 3. Kg4 Kd4 4.
                                    Kf5 Kd5 5. Kf6 Kd6 6. Kg7 Ke6 7. Kxh7
                                    Kf7 8. Kh8 Kg6 9. h7 Kf7




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