Author: John Coffey
Date: 10:04:53 10/09/98
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On October 09, 1998 at 09:38:35, Robert Hyatt wrote: >On October 09, 1998 at 02:11:19, Jouni Uski wrote: > >>I have feeling, that using 3-5 pieces tablebases don't give any measurable >>rating gain - may be 2-10 points maximum = no real gain. >> >>Jouni > > >I would disagree here, as I see KRP vs KR regularly. In fact, in long >games on ICC, I'd bet I see this about every 10 games or so. Lonnie >can comment because he has played against Crafty a lot. And it is quite >often for two computers to end up a pawn up or down, in the ending, and >if one knows about this, it will win more, or draw when it should lose, >than without them. > >ditto for endings like KRB vs KR... where it knows to trade into that >when it can be drawn... Fritz5 has KRP vs KR and KQ vs KR. Not sure if it has anything else. I wanted to create a tablebase with all the possible K + 2 pawns (or less) vs all the K + pawn positions. I figured that the number of possible positions is around 489 million, but if I were to store it 2 bits per position (win/loss/draw/unknown) then I could get it in 128 megs. John Coffey
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