Author: Robert Hyatt
Date: 14:46:57 08/05/02
Go up one level in this thread
On August 05, 2002 at 16:40:17, John Merlino wrote: >On August 05, 2002 at 03:10:07, Jouni Uski wrote: > >>[D]8/4rk2/1p2r3/1Pp5/2Pp4/1K1P4/2PQ4/8 w - - >> >>Crafty's evalution after 14 ply +1,56. >> >>Jouni > >Chessmaster 9000 says draw: > >Time Depth Score Positions Moves >0:00 1/3 -0.11 931 1.Qg2 Rf6 2.Qd5+ Ree6 3.c3 >0:00 1/3 -0.09 1210 1.Qg5 Ke8 2.Qh5+ Rf7 3.Qd5 >0:00 1/4 0.00 3468 1.Qg5 Ke8 2.Qd5 Kf7 3.Qg5 >0:00 1/5 0.00 10927 1.Qg5 Ke8 2.Qd5 Kf7 3.Qg5 >0:00 1/6 0.00 22026 1.Qg5 Ke8 2.Qd5 Kf7 3.Qg5 >0:01 1/7 -0.01 60257 1.Qg5 Ke8 2.Qg8+ Kd7 3.Qb8 Rf6 > 4.Qb7+ Ke8 5.Qd5 Rfe6 6.c3 >0:01 2/8 0.00 90638 1.Qg5 Ke8 2.Qd5 Rf6 3.c3 Re3 4.Qb7 > Kf8 >0:02 3/9 0.00 203356 1.Qg5 Ke8 2.Qd5 Rf6 3.c3 Re3 4.Kc2 > Rf2+ 5.Kb3 Rf6 >0:06 4/10 0.00 509136 1.Qg5 Ke8 2.Qd5 Rf6 3.c3 Re3 4.Kc2 > Rf2+ 5.Kb3 Rf6 >0:16 5/11 0.00 1401084 1.Qg5 Ke8 2.Qd5 Rf6 3.c3 Re3 4.Kc2 > Rf2+ 5.Kb3 Rf6 >0:42 6/12 0.00 3677032 1.Qg5 Ke8 2.Qd5 Rf6 3.c3 Re3 4.Kc2 > Rf2+ 5.Kb3 Rf6 >1:51 7/13 0.00 9804440 1.Qg5 Ke8 2.Qd5 Rf6 3.c3 Re3 4.Kc2 > Rf2+ 5.Kb3 Rf6 >4:49 8/14 0.00 25940648 1.Qg5 Ke8 2.Qd5 Rf6 3.c3 Re3 4.Kc2 > Rf2+ 5.Kb3 Rf6 > >jm The problem is that CM believes black is _losing_. And so will try to go for a perpetual. If the eval were a tad different, and it believed that white is winning here, then it would not see the repetition as it could avoid it whenever it wants with WTM...
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