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Subject: Re: CSVN Leiden: ChessTiger vs IsiChess (3) 1-0 (Commented Game)

Author: John Merlino

Date: 12:31:24 04/24/04

Go up one level in this thread


On April 24, 2004 at 14:50:18, Uri Blass wrote:

>On April 24, 2004 at 13:06:18, Djordje Vidanovic wrote:
>
><snipped>
>>Tiger played just like a human.  Exploited the immobility of the opponent's rook
>>with uncanny, almost human, understanding...  I like Tiger a lot.
>>
>>Djordje
>
>I suspect that cxb4 is also a search problem and Isichess did not search deep
>enough.
>
>Of course it is possible to solve everything by better evaluation but as you
>said search is also knowledge.
>
>Here is some search of movei(p850,32 mbytes hash).
>
>Movei needs a long time to avoid cxb4 but I doubt if the laternative that it
>finds is better(it is not the Rh4 move that was suggested by Kurt).
>
>[D]7R/p1k4p/6p1/1ppp3r/1P6/2P4P/P4PP1/6K1 b - - 0 1

CM_SKR on a P4-2.4 gives up on cxb4 after 7 seconds:

Time	Depth	Score	Positions	Moves
0:00	1/4	-0.32	2406		1...cxb4 2.cxb4 Rh4 3.Ra8 a6
0:00	1/5	-0.26	4841		1...cxb4 2.cxb4 d4 3.Ra8 Kb6 4.Rd8
0:00	1/6	-0.30	11902		1...cxb4 2.cxb4 d4 3.Ra8 d3 4.Rxa7+
					Kc6 5.Kf1 d2
0:00	1/7	-0.35	35035		1...cxb4 2.cxb4 Rh4 3.Ra8 Kb6 4.Rd8
					Kc6 5.Rc8+ Kd7
0:00	1/8	-0.20	98743		1...cxb4 2.cxb4 Rh4 3.Kf1 Kd6 4.a3
					Ke5 5.Ra8 Rd4 6.Rxa7
0:01	1/9	-0.16	231305		1...cxb4 2.cxb4 Rh4 3.Kf1 Kd6 4.a3
					h6 5.Ra8 Rd4 6.Rxa7 Ke5
0:02	1/10	-0.16	552316		1...cxb4 2.cxb4 Rh4 3.Kf1 Kc6 4.a3
					a6 5.Ke2 Re4+ 6.Kd3 Rf4 7.Rc8+ Kd6
0:05	2/11	-0.09	1192340		1...cxb4 2.cxb4 Rh4 3.Kf1 Kc6 4.a3
					a6 5.Ke2 Kc7 6.Ra8 Re4+ 7.Kd3 Rf4
					8.Ke2
0:07	2/11	-0.17	1902276		1...d4 2.cxd4 c4 3.Kf1 Rh4 4.d5
					Kd6 5.Rb8 a6 6.Rd8+ Ke5 7.Rd7 Rd4
0:10	3/12	-0.14	2514008		1...d4 2.cxd4 c4 3.Kf1 Rh4 4.Ra8
					Rxd4 5.Rxa7+ Kb6 6.Rxh7 Rd1+ 7.Ke2
					Ra1 8.a3 Rxa3 9.Kd2
0:22	4/13	0.00	5514382		1...d4 2.cxd4 c4 3.Kf1 Rh4 4.Ra8
					Rxd4 5.Rxa7+ Kb8 6.Rxh7 c3 7.Ke1
					c2 8.Rh8+ Kb7 9.Rh7+ Kb8
1:09	5/14	-0.03	17769426	1...d4 2.cxd4 c4 3.Kf1 Rh4 4.Ra8
					Rxd4 5.Rxa7+ Kd6 6.Ra6+ Ke5 7.Rc6
					Rd5 8.Ke2 g5 9.Rc5

jm



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