Author: Mark Young
Date: 03:17:06 02/27/99
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On February 26, 1999 at 07:41:57, blass uri wrote: >I am interested in results of programs in these positions to decide which >program to use in correspondence chess. > >I am interested to know the results of Hiarcs7 with selectivity 5,6 and 7. >I want to know if selectivity 6 or 7 is realy better for correspondence games. > >These positions were posted here in the past. > >position number 1: >r1bqr1k1/pp1p1ppp/5n2/1N2n3/2P1PB2/6P1/PP1Q1K1P/4RB1R b - - 0 1 > >The right move is d6 >Ferret solved this position in more than 20 hours in pentium300 >It is a hard position for chess programs. > >position number 2: >r2qr1k1/ppNb1ppp/3Q1n2/8/2P1PBn1/5KP1/PP5P/4RB1R b - - 0 1 Hiarcs7 was unable to find g4 after >8 hours of search. Both selc. 5, and 7 gave to same line and results. Here is Hiarcs7 PV for this position. f6xe4 e1xe4 e8xe4 f3xe4 d7-c6+ e4-d4 d8xd6+ f4xd6 +54 selc. 5, and 7 Mark Young > >This position is a result of the first position after the moves 13...d6 14.Qxd6 >Bd7 15.Nc7 Neg4+ 16.Kf3 >The right move is g5 for example Bxg5 Nxh2+ and white has no advantage. > >position number 3: >7r/1k2P2P/4p3/1pp5/8/2pp4/1n3PP1/R4K1R w - - 0 1 > >The right move is g4 but programs(with the exception of exchess) usually prefer >the losing move e8=Q > >The best reply to g4 is Nc4 (probably black is losing but Nc4 is the best >chance) and programs usually have problems in finding Nc4. > >position number 4: >r4rk1/2p3pp/p7/1p1pq3/8/2P2N2/PPQ2KPP/R1B5 w - - 0 1 > >The task is to avoid Kg1 >Fritz5.16 can do it in something between 10 and 15 minutes >I tries other program and they were slower. >I do not know if Fritz5.32 is better than Fritz5.16 in this position. > >position number 5(the last position that I posted): >3r1b1k/pp6/2n2q1p/2Bp1B1Q/5P2/1P4p1/P7/4R1K1 w - - 0 1 > >The target is to find Re6 >All the programs that I tried(with the exception of chessmaster6000) need more >than an hour to solve it on my pentium200MMX. > >Uri
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