Author: Robert Hyatt
Date: 18:11:22 07/23/02
Go up one level in this thread
On July 23, 2002 at 20:07:11, Dann Corbit wrote: >On July 23, 2002 at 18:32:27, Robert Hyatt wrote: > >>A few years ago, Komputer Korner had a "correspondence kup" match with Crafty, >>chessmaster and some other programs, playing a correspondence tournament. In >>that match, Crafty found a wild sacrifice to play against Chessmaster, I think >>it was Nf6. After searching for 24 hours or whatever the time limit was, Crafty >>saw a draw score. And it saw a draw score for the next couple of moves. >> >>Right after Crafty played that move, Hsu sent me an email saying "brilliant >>move". I told him Crafty only saw a draw. He said "let it keep searching... >>DB Jr saw +2.5 very quickly." Sure enough, a few moves later Crafty realized >>it was not just drawing, it was winning easily. >> >>I will try to find the game. If anybody has it, perhaps _that_ position will >>be a good one to see how long it takes today's programs to find the move and >>find it is winning, compared to DB1 back in 1996... >> >>I will see what I can find... >> >>I think the event was called "the komputer kup korrespondence tournament" or >>something similar... > >After 12 minutes on a 950 MHz Athlon, Chess Tiger 14 wants to move the Bishop to >h6: > >[D]r1b1r1k1/1q3ppp/ppn5/2bNp3/P4B2/5Q1P/BP3PP1/R2R2K1 w - - ce 10; acd 15; acs >720; pv Bh6 Re6 Be3 Rb8 Bxc5 bxc5 Nc3 Re7 Rd6 e4 Qg3 Rc7 Rb1 Bf5 Nd5;|Bf4h6 > >Approximately a draw score. This will take a while. But the score will go _way_ up eventually, although I don't remember how deep Crafty went. I believe that KK had normalized the event to 8 hours of pentium pro 200 time. For those with slower machiens, they got proportionally more time, based on pre-match benchmarks... Crafty found Nf6 with 0.00 after a long search. At the time DB Jr found it with +2.5 after a couple of minutes. Crafty got there after a couple of more moves maybe...
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