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Subject: For Johan

Author: John Merlino

Date: 16:18:15 04/05/04

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On April 05, 2004 at 12:05:59, John Merlino wrote:

>On April 05, 2004 at 11:39:55, Rex wrote:
>
>>Here move Rxe3 was played.
>>
>>How soon does other programs find it?
>>
>>[D]r5k1/1RR2p1p/5Ppb/3pB3/3Pr1P1/4P2P/5QK1/q7 b - - 0 51
>
>Chessmaster 9000, SKR personality on a P4-2.4, finds Rxe3 in 38 seconds, but
>only sees it as a draw even after 20 minutes:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/5	2.41	48757		51...Rf8 52.g5 Rxe5 53.dxe5 Bxg5
>					54.h4
>0:00	1/5	2.18	79108		51...Bf8 52.Rxf7 Rxe5 53.dxe5 Ra2
>					54.Rxf8+ Kxf8
>0:00	1/6	2.01	99284		51...Bf8 52.Rxf7 Rxe5 53.dxe5 Ra2
>					54.Rg7+ Bxg7 55.Rxg7+ Kf8
>0:01	1/7	1.32	211426		51...Bf8 52.Rxf7 Rxe5 53.Rg7+ Bxg7
>					54.Rxg7+ Kh8 55.dxe5 Qxe5 56.Re7
>0:03	1/8	1.35	752509		51...Bf8 52.Qf1 Qxf1+ 53.Kxf1 Ra1+
>					54.Kf2 Ra2+ 55.Kf3 Ra3 56.Rxf7
>					Rexe3+ 57.Kf2 Rxh3
>0:07	1/9	1.38	1550400		51...Bf8 52.Qf1 Qxf1+ 53.Kxf1 Bh6
>					54.Ra7 Rb8 55.g5 Bxg5 56.Rcb7 Rf8
>					57.Bd6
>0:15	1/10	1.43	3277992		51...Bf8 52.Qf1 Qxf1+ 53.Kxf1 Rxe3
>					54.Rxf7 h6 55.h4 Re4 56.Rfd7 Ra1+
>					57.Kg2 Rxg4+ 58.Kh3
>0:38	1/10	0.20	8358494		51...Rxe3 52.Rxf7 Rxe5 53.Rfc7
>					Qe1 54.Rg7+ Bxg7 55.Rxg7+ Kh8 56.dxe5
>					Qe4+ 57.Kg3 Ra3+ 58.Kh4 Qxe5
>1:24	1/11	0.20	18518116	51...Rxe3 52.Rxf7 Rxe5 53.Rfc7
>					Qe1 54.Rg7+ Bxg7 55.Rxg7+ Kh8 56.dxe5
>					Qe4+ 57.Kg3 Ra3+ 58.Kh4 Qxe5
>4:05	1/12	0.00	54528075	51...Rxe3 52.Re7 Bf8 53.Qxe3 Ra2+
>					54.Kg3 Ra3 55.Rb3 Rxb3 56.Qxb3
>					Qe1+ 57.Kg2 Qe2+ 58.Kg3 Qe1+
>8:44	2/13	0.00	116317176	51...Rxe3 52.Re7 Bf8 53.Qxe3 Ra2+
>					54.Kg3 Ra3 55.Rb3 Rxb3 56.Qxb3
>					Qe1+ 57.Kg2 Qe2+ 58.Kg3 Qe1+
>20:00	3/14	0.00	268161510	51...Rxe3 52.Re7 Bf8 53.Qxe3 Ra2+
>					54.Kg3 Ra3 55.Rb3 Rxb3 56.Qxb3
>					Qe1+ 57.Kg2 Qe2+ 58.Kg3 Qe1+
>
>jm

Johan,

You might be interested, just for comparison's sake, to know that my work
computer (AMD 2500+ @1.83GHz) ran this position over 20% faster. It found Rxe3
in 30 seconds.

jm



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