Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: A good test position

Author: John Merlino

Date: 09:29:09 02/09/04

Go up one level in this thread


On February 09, 2004 at 10:00:00, Albert Silver wrote:

>Jose Garcia Ruvalcaba posted some correspondence games of his at CTF, including
>a loss in 1999 to Anatoly Sidenko. Sidenko came up with a superb move, that
>makes a good test position for today's super bots.
>
>                                          Albert
>
>[D]r2r1b2/3b1k1p/2p2pp1/p3n3/R3NNP1/7P/PPP5/1KB1R3 w - - 0 30
>
>30. Nxf6!! Kxf6 31. g5+ Kf5 32. Nd5!

Chessmaster 9000, SKR personality on a P4-2.4, needs almost 4 minutes to find
30.Nxf6. It doesn't find the full line above because it prefers 31...Kf7 for
Black.

Time	Depth	Score	Positions	Moves
0:01	1/7	-0.26	257972		30.g5 Bb4 31.c3 c5 32.Nd6+ Kg8
					33.cxb4 Bxa4 34.bxc5
0:01	1/7	-0.08	293867		30.Bd2 Nf3 31.Re2 f5 32.gxf5 Bxf5
					33.Kc1 Nxd2 34.Rxd2 Rxd2 35.Kxd2
0:02	1/8	-0.26	436644		30.Bd2 Nf3 31.Rd1 f5 32.gxf5 gxf5
					33.Bxa5 Rxa5 34.Ng5+ Nxg5 35.Rxa5
0:03	1/8	-0.11	649976		30.g5 Nf3 31.Rf1 c5 32.Ra3 Nxg5
					33.Nxg5+ fxg5 34.Ne2+ Kg8 35.Bxg5
					Re8
0:06	1/9	-0.30	1184350		30.g5 Nf3 31.Rf1 c5 32.Ra3 f5 33.Raxf3
					fxe4 34.Re3 Bf5
0:12	1/9	-0.20	2471512		30.Rf1 Bb4 31.Ne2 c5 32.Rxf6+ Kg7
					33.Rxb4 axb4 34.N2g3 h6 35.Be3
0:26	1/10	-0.25	5211831		30.Rf1 Be7 31.Ne2 c5 32.Ra3 Bc6
					33.N2g3 Bb5 34.Rf2 a4
0:36	1/10	-0.08	7404621		30.g5 Nf3 31.Rf1 c5 32.Ra3 Nxg5
					33.Nxg5+ fxg5 34.Nh5+ Bf5 35.Bxg5
					Be7 36.Bxe7 Kxe7
0:58	1/11	-0.07	11866493	30.g5 Bb4 31.c3 c5 32.Nd6+ Kg8
					33.cxb4 Bxa4 34.bxc5 Nf3 35.Re7
					Nxg5 36.Nd5
2:17	1/12	-0.41	29014096	30.g5 Bb4 31.Re2 c5 32.Rxb4 axb4
					33.gxf6 Bb5 34.Re3 Rac8 35.b3 h6
					36.a4
3:55	1/12	0.31	51993673	30.Nxf6 Kxf6 31.g5+ Kf7 32.Rxe5
					Bb4 33.a3 c5 34.axb4 Bxa4 35.b3
					Bd7 36.bxc5 a4
6:01	2/13	0.07	81179162	30.Nxf6 Kxf6 31.g5+ Kf7 32.Rxe5
					Bb4 33.a3 c5 34.axb4 Bxa4 35.b3
					Bd7 36.bxc5 Bc6 37.Re6 Rac8

Here is what it says after forcing 30.Nxf6 Kxf6 31.g5+:

Time	Depth	Score	Positions	Moves
0:00	1/5	-1.19	22669		31...Kf5 32.Rf1 c5 33.Nd3+ Ke6
					34.Re4 Bd6
0:00	1/6	-0.91	58777		31...Kf5 32.Ne2 Ke6 33.Nf4+ Kd6
					34.Rd4+ Kc5 35.Rdd1 Nf3
0:01	1/7	-1.18	221951		31...Kf5 32.Rf1 Bb4 33.Nd5+ Ke6
					34.Nc7+ Ke7 35.Nxa8 Rxa8 36.h4
					Rf8 37.Rxf8 Kxf8
0:03	1/8	-0.34	732207		31...Kf5 32.Nd5 Bb4 33.Nxb4 axb4
					34.Rxb4 Ke6 35.Rh4 c5 36.Rxh7 Bc6
0:05	1/9	-0.27	1221888		31...Kf5 32.Nd5 Bb4 33.Nxb4 axb4
					34.Rxb4 Ra5 35.Rbe4 Re8 36.Bd2 Raa8
0:14	1/10	-0.14	3292467		31...Kf5 32.Nd5 Bb4 33.Nxb4 axb4
					34.Rxb4 Ra5 35.Rf4+ Ke6 36.Bd2
					Rd5 37.Bc3 Bc8
0:46	1/11	0.50	10886296	31...Kf5 32.Nd5 Bb4 33.Nxb4 axb4
					34.Rxb4 Be8 35.Rf4+ Ke6 36.Rf6+
					Kd5 37.b3 Nf7 38.Re7 Kc5 39.Be3+
					Kb5 40.Rfxf7 Bxf7 41.Rxf7
0:56	1/11	0.27	12970164	31...Kf7 32.Rxe5 Bb4 33.a3 c5 34.axb4
					Bxa4 35.b3 Bd7 36.bxc5 Re8 37.Bb2
					Rxe5 38.Bxe5
1:05	1/12	0.06	14886616	31...Kf7 32.Rxe5 Bb4 33.a3 c5 34.axb4
					Bxa4 35.b3 Bd7 36.bxc5 Bc6 37.Re6
					Rac8
1:31	2/13	0.11	21101857	31...Kf7 32.Rxe5 Bb4 33.a3 c5 34.axb4
					Bxa4 35.b3 Bd7 36.bxc5 Re8 37.Bb2
					Bc6
3:12	3/14	0.06	42066786	31...Kf7 32.Rxe5 Bb4 33.a3 c5 34.axb4
					Bxa4 35.b3 Bd7 36.bxc5 Re8 37.Bb2
					Bc6 38.Bc3 Rxe5 39.Bxe5
6:59	4/15	0.06	95455632	31...Kf7 32.Rxe5 Bb4 33.a3 c5 34.axb4
					Bxa4 35.b3 Bd7 36.bxc5 a4 37.b4
					Ra7 38.Nd5 Bxh3 39.b5

jm



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.