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Subject: Re: Caged King blunder by El Chinito

Author: John Merlino

Date: 09:50:21 12/30/03

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On December 30, 2003 at 03:19:52, David Dahlem wrote:

>El Chinito 3.25 was winning in this game but seemed to have trouble with this
>critical position, with large jumps in evaluation up and down. After 44. Bxc5,
>Ktulu announced mate in 11 two moves later.
>
>[D]R7/p1p1kp2/2p2p2/2Np1Pr1/1P6/P1P2b1r/KR2N2P/6b1 b - - 4 44

Chessmaster 9000, SKR personality on a P4-2.4, gives up on Bxc5 in less than a
second. Depending on the time control, it will play either Rxh2 or d4:

Time	Depth	Score	Positions	Moves
0:00	1/6	-1.38	32473		44...Rxh2 45.Nd4 Rxb2+ 46.Kxb2
					Rg2+ 47.Ka1 Bxd4 48.cxd4 Rg1+ 49.Kb2

0:00	1/7	-0.42	70728		44...Rxh2 45.Nxg1 Rxb2+ 46.Kxb2
					Rg2+ 47.Kc1 Rxg1+ 48.Kd2 Rg2+ 49.Ke3
					Bg4 50.Rxa7
0:01	1/8	-0.46	191211		44...Rxh2 45.Nxg1 Rxb2+ 46.Kxb2
					Rg2+ 47.Kc1 Rxg1+ 48.Kd2 a5 49.Rxa5
					Rg2+ 50.Ke3 Bg4
0:02	1/8	-0.54	450766		44...d4 45.Nxg1 Bd5+ 46.Ka1 Rxg1+
					47.Rb1 Rg2 48.Re1+ Re3 49.Rxe3+
					dxe3 50.Rxa7 Rxh2 51.Rxc7+ Kd6
0:06	1/9	-0.60	1154689		44...d4 45.c4 Rxh2 46.Nxg1 Rxb2+
					47.Kxb2 Rg2+ 48.Kc1 Rxg1+ 49.Kd2
					a6 50.Rxa6 Rg2+ 51.Kd3
0:11	1/10	-0.60	2280931		44...d4 45.c4 Rxh2 46.Nxg1 Rxb2+
					47.Kxb2 Rg2+ 48.Kc1 Rxg1+ 49.Kd2
					a6 50.Rxa6 Rg2+ 51.Kd3
0:22	1/11	-0.32	4492176		44...d4 45.c4 Rxh2 46.Nxg1 Rxb2+
					47.Kxb2 Rg2+ 48.Kc1 Rxg1+ 49.Kd2
					a6 50.Rxa6 Rd1+ 51.Kc2 Re1 52.a4
					Ra1
0:29	1/11	-0.60	5988632		44...Rxh2 45.Nxg1 Rxb2+ 46.Kxb2
					Rg2+ 47.Kc1 Rxg1+ 48.Kd2 Bg4 49.Rxa7
					Kd6 50.Nb7+ Ke5 51.Nc5 Rg2+ 52.Ke3
					Kxf5 53.Rxc7
0:34	1/12	-0.60	7048631		44...Rxh2 45.Nxg1 Rxb2+ 46.Kxb2
					Rg2+ 47.Kc1 Rxg1+ 48.Kd2 Bg4 49.Rxa7
					Kd6 50.Nb7+ Ke5 51.Nc5 Rg2+ 52.Ke3
					Kxf5 53.Rxc7
1:04	2/13	-0.65	13569257	44...Rxh2 45.Nd4 Rxb2+ 46.Kxb2
					Rg2+ 47.Ka1 Bg4 48.Rxa7 Kd6 49.Nb7+
					Ke5 50.Na5 c5 51.Nac6+ Ke4 52.bxc5
					Bh2
2:35	3/14	-0.58	34536656	44...Rxh2 45.Nd4 Be2 46.Nxe2 Rgg2
					47.Rxa7 Rxe2 48.Rxe2+ Rxe2+ 49.Kb3
					Bxc5 50.bxc5 Kd7 51.Ra8 Re8 52.Ra4
					Re5 53.Rf4 Re4

jm



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