Author: Heiner Marxen
Date: 06:09:57 04/17/03
Go up one level in this thread
On April 16, 2003 at 01:55:22, Martin Bauer wrote: >On April 15, 2003 at 20:29:26, Djordje Vidanovic wrote: > >>Chess Tiger 15 finds the mate, in 17 moves... which is strange. According to Chest this really is a mate in 19 (0.12 secs :-). >Strange, but same "problem" with my own Engine: > > >Analysis by DelphiMAX 2.6: > >1.Ta7 > -+ (-7.47) Tiefe: 1/2 00:00:00 >1.Ta7 > -+ (-8.62) Tiefe: 2/3 00:00:00 >1.Ta7 e5 2.a6 > -+ (-7.75) Tiefe: 3/5 00:00:00 >1.Ta7 g5 2.a6 h5 > -+ (-7.78) Tiefe: 4/6 00:00:00 >1.Ta7 h5 2.c5 dxc5 3.a6 > -+ (-7.88) Tiefe: 5/7 00:00:00 >1.Ta7 h5 2.c5 dxc5 3.a6 g5 > -+ (-8.32) Tiefe: 6/7 00:00:00 1kN >1.Ta7 e5 2.c5 d5 3.a6 d4 4.c6 > -+ (-7.72) Tiefe: 7/9 00:00:00 2kN >1.Ta7 > -+ (-7.22) Tiefe: 8/10 00:00:00 5kN >1.Ta7 > = (0.00) Tiefe: 9/10 00:00:00 8kN >1.Ta7 g5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 10/10 00:00:00 11kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 11/10 00:00:00 14kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 12/10 00:00:00 18kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 13/11 00:00:00 21kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 14/11 00:00:00 24kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 15/14 00:00:00 28kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 16/14 00:00:01 31kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 17/16 00:00:01 35kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 18/16 00:00:01 39kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 19/18 00:00:01 42kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 20/18 00:00:01 46kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 21/20 00:00:01 50kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 22/20 00:00:01 53kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 23/22 00:00:01 57kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 24/22 00:00:01 61kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 25/24 00:00:01 64kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 26/24 00:00:01 68kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 27/26 00:00:01 72kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 28/26 00:00:01 76kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 29/28 00:00:01 79kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 30/28 00:00:02 83kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 31/32 00:00:02 87kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 32/32 00:00:02 91kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 33/32 00:00:02 94kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 34/32 00:00:02 98kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 35/34 00:00:02 102kN >1.Ta7 e5 2.c5 dxc5 3.a6 h5 > = (0.00) Tiefe: 36/34 00:00:02 106kN >1.Ta7 > +- (#17) Tiefe: 37/36 00:00:02 257kN >1.Ta7 > +- (#17) Tiefe: 37/36 00:00:03 257kN >1.Ta7 g5 2.Ta6 h5 3.Ta7 e5 4.Ta6 e4 5.Ta7 g4 6.Ta6 h4 7.Ta7 h6 8.Ta6 h5 9.Ta7 g3 Since this is a zugzwang problem, immediate 1... g5 cannot be part of the PV. 1...g6 would be ok. Here is a PV from Chest: PV: Ra7 h5 Ra6 h4 Ra7 h3 Ra6 h2 Ra7 h6 Ra6 h5 Ra7 h4 Ra6 h3 Ra7 g6 Ra6 g5 Ra7 g4 Ra6 g3 Ra7 e6 Ra6 e5 Ra7 e4 a6 d5 c5 d4 c6 d3 c7# Cheers, Heiner
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