Author: Dieter Buerssner
Date: 11:27:48 11/17/05
Go up one level in this thread
On November 17, 2005 at 10:13:27, Uri Blass wrote:
>The original position is mate in 36 based on backward analysis by yace
You might be interested to know how to find the mate score in such a position
with Yace even without TBs. Set Endgame Database usage to high (or when using
console mode, tb_u 4). With your computer, it should take less than 3 minutes,
to show a mate in 36 (in console mode even with a PV until the end).
1.Ke4 Ke8 2.Ke3 Kd7 3.Kd3 Kc8 4.Kc4 Kd8 5.Kd4
Ke8 6.Kc5 Kd7 7.Kd5 Ke7 8.Kc6 Kf6 9.Kd6 Kf7
10.Kd7 Kf8 11.Ke6 Ke8 12.f6 g6 13.f7+ Kf8
14.Kd6 Kxf7 15.Kd7 Kf8 16.Ke6 Kg7 17.Ke7 Kh7H
18.Kf7H Kh6H 19.Kf6H Kh7H 20.Kxg5H {EGTB}
20...Kg7! 21.h4! Kh7 22.Kf6! Kh6! 23.g5+! Kh5!
24.Kf7 Kxh4 25.Kxg6!! Kg4 26.Kf6! Kh4 27.g6!
Kg4 28.g7 Kf4 29.g8=Q! Ke4 30.Qd8 Ke3 31.Kf5
Kf2! 32.Qd3 Kg2 33.Qe2+ Kg3 34.Kg5! Kh3 35.Kf4!
Kh4 36.Qh2# {1001}
Yace thinks, that Kd4 is also a mate in 36, Kd5 mate in 37 and the pawn moves
are draw.
BTW. I am not sure, if Yace was here just lucky. (José Raul Capablanca, "A good
player is always lucky." :-)
Regards,
Dieter
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