Author: Jeff Anderson
Date: 19:07:48 02/20/00
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On February 20, 2000 at 21:36:59, Imran Hendley wrote: >On February 20, 2000 at 21:13:51, Imran Hendley wrote: > >>On February 20, 2000 at 21:01:38, Jeff Anderson wrote: >> >>>Here is a tough position. It is from Marshall's notes of Salwe vs. Marshall. >>>There are 3 difficult moves in the winning line. The only program I have that >>>was able to solve it was Little Goliath 2000a. Can your program find the right >>>move, and see that Black is winning? >>> >>[D]r5k1/2p1b1p1/6bp/p4P2/q3pP2/2PnB2P/PP1N4/KR3Q1R b - - 0 26 >>> >>>The main line goes 26...Nb4! 27.cxb4 axb4 28.a3 Bf6! 29.Bd4 Bf7! and Black wins. >>> >>>Jeff > >On my P200MMX LG2000 v2.5 with 7MB Hashtables Combination ON Solves the position >in 3:28. What does LG2000a do on your system? And does anyone else's program >solve this position? The position is not as difficult as I thought it was. On my computer it took LGoliath 2000a just over three minutes to find 26...Nb4, but other programs like Fritz and Nimzo have found it given sufficient time too. Curiously, none of the programs were able to tell that Black was winning after the move Nb4, instead their evals still gave the edge to White, or evaluated the position approximately equal, but I'm sure given another couple ply they would see that Nb4 was not only the best move but the winning move. Jeff
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