Author: Russell Reagan
Date: 22:48:49 04/23/02
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On April 24, 2002 at 00:20:59, Robert Hyatt wrote: >On April 23, 2002 at 22:35:02, david wight wrote: > >>does anyone know what was the longest chess game between chess computers and if >>you know can you tell me where i my get a print out of it?thanks very much.dave. > > >Crafty played at least one game that went beyond 500 moves. It played >more than one that went way over 200 against a player "SKIPPER" (a human) >on ICC. At one point winboard/xboard had a 500 ply (250 move) limit for >the internal move list. Skipper blew that in a 3 0 game... (he was >a human, remember, not a computer)... Do I understand this right? Skipper played more than 250 moves in less than 180 seconds? That means the slowest average would be 0.72 seconds per move, and in practical play he would have probably played faster than this to go OVER the 250 move limit in LESS than 3 minutes. Even if he had a super fast connection and just barely went over the move limit as his time was expiring we're looking at a more realistic value of a move every 0.7 seconds. When you add in the time it takes to move the mouse, you can easily knock the time per move down to 0.6 seconds, but that's not realistic because I'm assuming he could move at a rate of 10 moves per second. I gave this a try, and just moving pieces around the board in winboard's position editing mode I got about 240 moves in 3 minutes. That's with no time to think, not worrying about the legality of moves (most were probably illegal). I just moved pieces from one square to another and averaged about 80 per minute. Now for any human player to last more than 250 moves against crafty (or any computer program) they're going to have to do SOME thinking about the moves of the program would have put an end to the game long before 250 moves had passed. I really don't see how this could have been a human player. Perhaps if someone who knows about or plays blitz or lightning chess could give some info on how many moves typical 1 minute games last. I suppose it's possible though, but man that's fast! :) Russell
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