Author: Sune Fischer
Date: 06:13:31 12/27/03
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On December 27, 2003 at 08:10:23, Ingo Bauer wrote: >Hallo > >[D]5rk1/p4p1p/6b1/q7/6P1/1P6/Q4p1P/K1R5 b - - > >This nice position was reached by YACE against The Baron on ICC. It seems that >some engines have a problem to find a mate, not to speak of a mate in 8! Frenzee needs almost 26 seconds (@2GHz AMD) to see the mate 7 -1639 10 45590 1...Qe1 3.Qb2 Rc8 4.Ka2 Rxc1 5.Qxc1 Qxc1 8 -1905 19 130492 1...Qe1 3.Qb2 Rc8 4.Rb1 f1=Q 5.Qh8+ Kxh8 9 -1931 43 361221 1...Qe1 3.Qb1 10 -2177 146 1241710 1...Qe1 3.Qb2 Rc8 4.Ka2 Rxc1 5.b4 11 -2526 268 2406959 1...Qe1 3.Qb2 Re8 12 -299985 2563 23874386 [Mate in 8] 1...Qe1 3.Kb2 Qd2+ 4.Ka3 Qxc1+ 5.Qb2 f1=Q 6.Qxc1 Qxc1+ 7.Ka2 Bc2 8.b4 I think it actually gets a mate bound faster, the current version just doesn't output fail highs on the first move and a mate score is definitely outside the initial window. -S.
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