Author: Robert Hyatt
Date: 07:33:07 04/24/02
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On April 24, 2002 at 01:48:49, Russell Reagan wrote: >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 is correct. > 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 His plan was to lock up the position and shuffle a piece back and forth using "pre-move" or "smart-move" to try to run the computer out of time. He beat me many times doing this until I doctored up the time control code to make it impossible to lose on time...
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