Author: Roy Eassa
Date: 13:24:16 02/08/02
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On February 08, 2002 at 16:20:02, Roy Eassa wrote: >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). > > >If it's 100% sound, it's a good one. > >Trying the position before move 22: > >[d] r1bq1r2/p2np2k/3p4/3pP3/2pP3N/4Q3/PP4P1/2KR1B2 w - - 0 22 >Fritz 7 cannot find Bd3+ in 4 minutes (so far) on my Athlon 1.2 GHz. However, if I force 4.Bd3+, Fritz sees that White is better after 42 seconds: [d] r1bq1r2/p2np2k/3p4/3pP3/2pP3N/3BQ3/PP4P1/2KR4 b - - 0 1 1...cxd3 2.Qxd3+ Kh8 3.Rh1 Nf6 4.Ng6+ Kg7 5.Nxf8 Qxf8 6.exf6+ Qxf6 -+ (-1.72) Depth: 8/27 00:00:00 304kN 1...cxd3 2.Qxd3+ Kh8 3.Rh1 Qc7+ 4.Kb1 Nf6 5.Ng6+ Kg7 6.Nxf8 Ne4 7.Rc1 -+ (-1.66) Depth: 9/29 00:00:01 611kN 1...cxd3 2.Qxd3+ Kh8 3.Qg3 Qc7+ 4.Kb1 Nf6 5.Ng6+ Kg7 6.Nxf8+ Kxf8 7.exf6 exf6 -+ (-1.60) Depth: 10/32 00:00:04 2434kN 1...cxd3-- µ (-1.32) Depth: 11/31 00:00:07 4330kN 1...cxd3 2.Qxd3+ Kh8 3.Rh1 Rf1+ 4.Qxf1 Qc7+ 5.Kb1 Kg8 6.Nf5 Nxe5 7.dxe5 dxe5 = (-0.22) Depth: 11/39 00:00:20 11767kN 1...cxd3-- = (0.00) Depth: 12/35 00:00:27 15965kN 1...cxd3 2.Qxd3+ Kh8 3.Rh1 Nf6 4.Nf3+ Bh3 5.Rxh3+ Kg7 6.exf6+ Rxf6 ² (0.50) Depth: 12/41 00:00:42 25452kN so I imagine it would have found 4.Bd3+ in a decent amount of time. But I agree that it would have taken a _long_ time to find the complete win from the original position.
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