Author: blass uri
Date: 22:16:57 05/22/00
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On May 22, 2000 at 19:01:38, Dann Corbit wrote: >On May 22, 2000 at 15:52:20, Daniel Chancey wrote: > >>I agree that Chessmaster is #1 in finding solutions. If someone could hold a >>checkmating contest (The organizers set up positons in which mate can be forced >>in a number of moves in the middlegame) Chessmaster might be on top. >> >>If anyone knows who's the best in 5 min, 15, 30, 60, and 40/120 times in >>Chessmaster, tell me. If not, I'm on it. > >Chest would slaughter them. Chest can often find mates faster than chessmaster when the target is to find the shortest mate(The first mate that chessmaster finds is sometimes not the shortest mate but my experience is that chessmaster can find often shorter mate if you give it more time) I am not sure which program is better when the target is to find the shortest mate. The difference is that when chest finds the shortest mate you can be sure that it is the shortest mate and when chessmaster finds the shortest mate it does not know that it is the shortest mate and continue to search. I think that there is a bug in the search of chessmaster after finding mate because I can see it sometimes search for lines that are too long to improve the score. There was one case when it show mate in n and in the next iteration showed mate in n+1 and only later showed again mate in n but from my experiebnce always there is mate in at most n moves when it shows mate in n. >Bleeding piles of stinking meat, can the flies be far behind? > >For the three proposed problems, I suspect that: >1. Any chess program in the top 20 will find the key move at 40/2 time >controls. It is not the case for position number 2 when other programs prefer another winning move. >2. Most pairs of top 20 programs will play the exact best possible sequence >given the above constraint. If not, then there may be one or two moves extended >but the results will be the same. I agree that the result of the game will be the same in all 3 cases.
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