Author: Heiner Marxen
Date: 14:15:56 05/13/03
Go up one level in this thread
On May 13, 2003 at 00:56:49, Jouni Uski wrote:
>[D]5bk1/p3p1p1/p3P1P1/p7/p7/8/P7/5K2 w - -
>
>This is one of my oldest test positions with mate in 17 (Ke2). It's still
>unsolved by top pros, but Yace and Crafty can solve it. Interestingly
>Shredder7.04 first says mate in 22 and then mate in 0 (#0) !?!?
That's funny :-))
For a mate solver this one is peanuts: Chest needs 0.11 secs to find:
PV: Ke2 a3 Kd3 a4 Kc4 a5 Kb5 Kh8 Ka6 Kg8 Kxa7 Kh8 Ka6 Kg8 Kxa5 Kh8 Kxa4 Kg8 Kxa3
Kh8 Kb3 Kg8 a4 Kh8 a5 Kg8 a6 Kh8 a7 Kg8 a8=Q Kh8 Qxf8#
Ke2 Kh8 Kd2 Kg8 Kc2 Kh8 Kb2 a3+ Kxa3 Kg8 Ka4 ...+11
a4 Kxa4 ...+11
Kg8 Ka3 Kh8 Kxa4 ...+10
a3 Kb3 Kh8 Kxa3 Kg8 Ka4 ...+11
a4 Kxa4 ...+11
a4+ Kxa3 =*= Kxa4 ...+11
a3 Kc3 Kg8 Kb3 Kh8 Kxa3 Kg8 Ka4 ...+11
a4 Kxa4 ...+11
a4+ Kxa3 =*= Kxa4 ...+11
a4 Kb4 Kg8 Kxa3 =*= Kxa4 ...+11
a5+ Kxa3 Kg8 Kxa4 ...+11
a6 Kxa4 ...+10
a3 Kd3 Kh8 Kc3 Kg8 Kb3 Kh8 Kxa3 Kg8 Ka4 ...+11
a4 Kxa4 ...+11
a4+ Kxa3 =*= Kxa4 ...+11
a4 Kb4 Kg8 Kxa3 =*= Kxa4 ...+11
a5+ Kxa3 Kg8 Kxa4 ...+11
a6 Kxa4 ...+10
a4 Kc4 Kh8 Kb4 Kg8 Kxa3 =*= Kxa4 ...+11
a5+ Kxa3 Kg8 Kxa4 ...+11
a6 Kxa4 ...+10
a5 Kb5 Kh8 Ka6 Kg8 Kxa7 ...+11
a6+ Kxa5 Kh8 Kxa6 ...+10
(without duals)
Cheers,
Heiner
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