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Subject: Re: Good test; CM9K default -> 1 sec !

Author: John Merlino

Date: 11:45:03 04/29/04

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On April 29, 2004 at 14:34:16, Vincent Lejeune wrote:

>On April 29, 2004 at 13:02:52, Rob Basham wrote:
>
>>[D]3r1rk1/p1q2ppp/3bb3/3pB3/1p6/2P2Q1P/PPB2PP1/3RR1K1 w - - 0 1
>>
>>Ruffian 1.0.1 finds Bxh7+ in 22 sec.
>>
>>CM-9000 only 4 sec....!
>>
>>P3/850
>
>Time	Depth	Score	Positions	Moves
>0:00	1/4	0.75	4376		1.Qd3 g6 2.Bxd6 Qxd6 3.Qe3 Rc8
>0:00	1/4	0.79	5139		1.Bxd6 Qxd6 2.Qd3 g6 3.Qe3
>0:00	1/5	0.76	15203		1.Bxd6 Qxd6 2.Qd3 g6 3.Qd4 Rc8
>					4.Qf6 bxc3 5.bxc3
>0:00	1/6	0.60	63753		1.Bxd6 Qxd6 2.Qd3 g6 3.Bb3 bxc3
>					4.Qxc3 d4
>0:00	1/7	0.42	215150		1.Bxd6 Rxd6 2.Qd3 g6 3.Bb3 bxc3
>					4.bxc3 Rc8
>0:01	1/7	0.48	431907		1.Bxh7+ Kxh7 2.Qh5+ Kg8 3.Bxg7
>					Kxg7 4.Qg5+ Kh8 5.Rd4 Qc4 6.Rh4+
>					Qxh4 7.Qxh4+ Kg7 8.cxb4 Rh8
>0:02	1/8	0.67	872315		1.Bxh7+ Kxh7 2.Qh5+ Kg8 3.Bxg7
>					Kxg7 4.Qg5+ Kh8 5.Rd4 Qc4 6.Rh4+
>					Qxh4 7.Qxh4+ Kg7 8.Qg5+ Kh7 9.cxb4
>					Rfe8 10.Qh4+ Kg8
>0:07	1/9	0.73	2590631		1.Bxh7+ Kxh7 2.Qh5+ Kg8 3.Bxg7
>					Kxg7 4.Qg5+ Kh8 5.Rd4 Bf5 6.Qxf5
>					f6 7.Rh4+ Kg8 8.Qxd5+ Qf7 9.Rg4+
>					Kh8
>0:19	1/10	2.87	6767072		1.Bxh7+ Kxh7 2.Qh5+ Kg8 3.Bxg7
>					Kxg7 4.Qg5+ Kh8 5.Rd4 Bf5 6.Qxf5
>					f6 7.Rh4+ Kg8 8.Qh5 Qg7 9.Rg4 Bh2+
>					10.Kxh2
>0:45	2/11	4.14	15861288	1.Bxh7+ Kxh7 2.Qh5+ Kg8 3.Bxg7
>					Kxg7 4.Qg5+ Kh8 5.Rd4 f6 6.Rh4+
>					Qh7 7.Rxh7+ Kxh7 8.Qh4+ Kg7 9.Rxe6
>					bxc3 10.bxc3 Bc5 11.Rc6 Bb6 12.Qg4+
>					Kh8 13.Qg6

Yes, this position is interesting. On my AMD 2500+, the default personality
takes only one second to find Bxh7+, but the popular CM_SKR personality takes 18
seconds. Isn't computer chess fun?? :-)

jm



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