Author: Robert Hyatt
Date: 13:52:11 03/22/99
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On March 22, 1999 at 12:41:44, James T. Walker wrote: >Last night I ran the 2nd 100 games at game/5 minutes between Crafty 16.5 with >and without tabelbases in an attempt to determine the value of the tabelbases. >It is almost like an instant replay. 2nd 100 games score: > >First 50 Crafty w/tb +16 =20 -14 = 26 to 24 >Second 50 "" " +13 =21 -16 = 23.5 to 26.5 >Second 100 games " Total = 49.5 to 50.5 >Total for 200 games Crafty with tb =100.5 to 99.5 > >I only have the 3/4 man tablebases and about 6 of the 5 man tabelbases. Most >notably absent is the KRPKR tablebases. I can't generate them on my computer >and AOL will not leave me alone long enough to download them. [:-) >So far it looks like the tablebases are useless !? I can't believe this though. > I really love to see a program announce "mate in 21" when playing 5 minute >blitz ! Even if that is the only value I get out of the tablebases I still >think they are worth while. I will play a couple hundred more but it looks like >the advantage is minimal without the KRPKR tablebase which I believe will yield >the most advantage. >Jim Walker I find the following most useful: krp vs kr, and kqp vs kq. And in that set, krn vs kr. That last one is normally a draw, but it is _very difficult_ to draw if you don't know what you are doing. I have beaten several programs with 'swindle mode' in this ending, going from 0.00 to mate in 24 or so on one bad (not obviously bad either) move. :)
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