Author: Dieter Buerssner
Date: 06:31:46 04/09/05
Go up one level in this thread
On April 07, 2005 at 08:23:50, Vincent Lejeune wrote:
>I think yes
>
>4RQ2/5p2/2q2kp1/3p4/3P2PP/8/1K6/8 b - - 0 1
>
>Is there any program find it (in less than 30 min) ?
Not in less than 30 minutes, but after a while it at least shows 0.0. Yace does
not have any drawing heuristics (like for example Little Goliath, which seems to
use something like: when I check my opponent n times in a row, it will be at
least draw). It really has to see, that repetition of position can be forced.
Regards,
Dieter
3763016634 2:46:49 -2.92 17. 1...Qb5+ 2.Kc3 Qc4+ 3.Kd2 Qxd4+ 4.Ke1 Qg1+
5.Ke2 Qxg4+ 6.Ke3 {HT} {-340}
3210389760 4:01:53 -2.52 18++ 1...Qb5+ 2.Kc3 Qc4+ 3.Kd2 Qxd4+ 4.Ke1 Qg1+
5.Ke2 Qxg4+ 6.Ke3 Qg1+ 7.Kd2 Qd4+ 8.Ke1 Qxh4+
9.Kd2 Qf4+ 10.Kd3 Qc4+ 11.Ke3 Qb3+ 12.Kf2 Qb2+
13.Ke1 Qc3+ 14.Kd1 Qd3+ 15.Kc1 Qc4+ 16.Kd1 Qb3+
17.Ke2 Qc4+ 18.Kf2 Qd4+ 19.Kf3 Qd3+ 20.Re3 Qd1+
21.Kg3 Qg1+ 22.Kh4 g5+ 23.Kh5 Qxe3 24.Kg4 {240}
620004974 4:34:43 -1.52 18++ 1...Qb5+ 2.Kc3 Qc4+ 3.Kd2 Qxd4+ 4.Ke1 Qg1+
5.Ke2 Qxg4+ 6.Ke3 Qg1+ 7.Kd2 Qd4+ 8.Ke1 Qxh4+
9.Kd2 Qd4+ 10.Kc2 Qc4+ 11.Kb2 Qb5+ 12.Ka2 Qa4+
13.Qa3 Qxe8 14.Qb4
2808150971 5:15:26 0.00 18t 1...Qb5+ 2.Kc3 Qc4+ 3.Kd2 Qxd4+ 4.Ke1 Qg1+
5.Ke2 Qxg4+ 6.Ke3 Qg1+ 7.Kd2 Qd4+ 8.Ke1 Qxh4+
9.Kd2 Qd4+ 10.Kc2 Qc4+ 11.Kb2 Qb5+ 12.Ka2 Qa4+
13.Kb2 Qb5+ {-260}
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