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Subject: Re: Position stumps Shredder 6.02 & Fritz 6 but not most others +diagram

Author: John Merlino

Date: 11:00:24 11/20/02

Go up one level in this thread


On November 19, 2002 at 19:19:24, Roy Eassa wrote:

>On November 19, 2002 at 19:18:55, Roy Eassa wrote:
>
>White to move and win.
>
>[d] 1q1k4/2Rr4/8/2Q3K1/8/8/8/8 w - - 0 1
>
>Shredder 6.02 and Fritz 6 can't find it; most of the other top engines see it
>instantly.  It's zugzwang, of course; I knew Fritz was susceptible but I'm
>surprised by Shredder.

Chessmaster 9000, on a P3-733, finds Kh6 instantly:

Time	Depth	Score	Positions	Moves
0:00	1/3	1.95	3318		1.Kh6 Qa8 2.Qf8+ Kxc7 3.Qxa8
0:00	1/4	1.97	14261		1.Kh6 Rxc7 2.Qf8+ Kd7 3.Qxb8 Rc6+
					4.Kg5
0:00	1/5	1.99	54995		1.Kh6 Rxc7 2.Qf8+ Kd7 3.Qxb8 Rc5
					4.Qf4 Rc2
0:00	1/6	2.02	86278		1.Kh6 Rxc7 2.Qf8+ Kd7 3.Qxb8 Rc5
					4.Qf4 Rc6+ 5.Kg5
0:01	1/7	2.02	170816		1.Kh6 Rxc7 2.Qf8+ Kd7 3.Qxb8 Rc5
					4.Qf4 Kc6 5.Kg7 Rd5
0:03	2/8	2.04	387756		1.Kh6 Rxc7 2.Qf8+ Kd7 3.Qxb8 Rc5
					4.Qb4 Rd5 5.Kg6 Kc6 6.Qc4+ Kd6
0:10	3/9	2.04	1170384		1.Kh6 Rxc7 2.Qf8+ Kd7 3.Qxb8 Rc5
					4.Qb4 Kd6 5.Qd4+ Rd5 6.Qf6+ Kc5
					7.Qc3+ Kd6 8.Kg6

jm



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