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Subject: Re: Another Candidate for the Most Difficult Tactical Combo in the World

Author: Ed Schröder

Date: 00:40:10 02/09/02

Go up one level in this thread


On February 08, 2002 at 16:05:22, ALI MIRAFZALI wrote:

>Some of my previous posting on this Topic where solved By some programs;
>(Like Sjeng)(which I do not think is a good program) this time I am
>sure That no program in The WORLD will even Come close to Solving
>this.Theposition is from a game between an IM and a GM (with the GM winning).
>In my opinion the Position is More difficult than all of THE NOLOT famous
>test Positions.It should therefore serve an a benchmark.Needless to say finding
>such positions is no easy matter ;because it requires many hours (days;Months)
>of research.
>[D]r1bq1r2/p2np1k1/3p2pR/3pP3/2pP4/5N2/PP2Q1P1/2KR1B2 w
>Important Note:the solution is not sensative to Extentions!!
>The solution as played in the actual game is:(in great style):19.Rxg6+!! Kxg6
>20.Nh4+ Kh6 21.Qe3+ Kh7 22.Bd3+!! cxb3 23.Qxd3+ Kh8 24.Rh1 Nf6 25.exf6 Qc7+
>26.Kb1 Rxf6 27.Nf3+ Kg8 28.Qh7+ Kf8 29.Qh8+ Kf7 30.Ng5+ Kg6.31.Qh5+ (1-0)
>What does your program say? For Comparison here is the line given by
>CM 8000 after 11 hours of furious Computation on a 500 MHZ Computer
>19.Qe3 Rxf3 20.gxf3 Nf8 21.Bh3 Qb6 22.exd6 Rb8 23.Rd2 Qxd6 (No Cigar).

Rebel Century 4 (WB) 7 hours and something, note the small difference in score
in comparison with 19.Qe3

22.Bd3+ is included in the mainline.

Ed

=============================================================
00:00:03.5	0,65	8	1266203	Qe3 dxe5 dxe5 Qb6 Qd2 Rb8 Rh4 Kf7
00:00:11.7	1,40	9	7048836	Qe3 dxe5 Qg5 Qb6 Bd3 e4 Qxe7+ Rf7
00:00:33.0	1,59	10	23060987	Qe3 dxe5 Qg5 Qe8 Qh4
00:01:28.3	1,68	11	61760918	Qe3 dxe5 Qg5 Qe8 dxe5 Rf5 Qh4 Rh5
00:03:44.7	1,67	12	160711607	Qe3 Rh8 Ng5 Nb6 Rxh8
00:12:53.5	1,88	13	566130239	Qe3 Rh8 Ng5 Nb6 Rxh8 Qxh8 exd6
00:46:54.5	1,88	14	1980123692	Qe3 Rh8 Ng5 Nb6 Rxh8
03:40:12.6	1,89	15	588334505	Qe3 Rh8 Ng5 Nb6 Rxh8
07:09:42.1	1,98	15	555159517	Rxg6+ Kxg6 Nh4+ Kh6 Qe3+ Kh7 Bd3+ cxd3



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