Author: blass uri
Date: 06:40:37 03/27/00
Go up one level in this thread
On March 27, 2000 at 09:08:59, Robert Hyatt wrote: >On March 26, 2000 at 11:45:38, Christophe Theron wrote: > >>On March 25, 2000 at 23:13:49, Tina Long wrote: >> >>>On March 25, 2000 at 14:28:13, James Robertson wrote: >>> >>>>On March 25, 2000 at 13:41:28, Roger wrote: >>>> >>>>>Would tablebases for Tiger have changed this result at all? >>>>> >>>>>Roger >>>> >>>>Maybe a quarter of a point.... My experience with tablebases is that if the >>>>program is moderately smart it doesn't benefit tremendously from them. >>>> >>>>James >>>> >>>Ed Schroder said about 6 months ago that Tablebases were worth about 10 points >>>on the SSDF scale. >>> >>>I'm 70% sure he said that! I'm 100% sure that Ed said once that something was >>>worth very little rating points. >>> >>>I'm glad I could add some real detail to this discussion. >>> >>>Tina Long >> >> >>As far as I know, endgames are not Tiger's weak point. >> >>One thing I'm sure about: as far as playing strength is the subject, I have a >>long list of ideas that, in my opinion, will give much more than tablebases. >> >>It does not matter if tablebases are easy to implement or not (they are not, >>unless you want to do it the dirty way, and I won't), I don't see the point in >>working on this before I fix more important things. >> >> >> >> Christophe > > >I am not wild about helping the competition, but you have one huge hold. You >don't know that KPB vs K is a draw if the wrong colored bishop is on the board. >Ditto for KPPB vs K, assuming all P's are rook pawns. I have seen Crafty draw >lost endings when you let it swindle you into such an ending. One ending >was you had a king, and pawns on a and b file + wrong bishop. Crafty had a pawn >on the a file. It pushed and you took with your b pawn rather than just pushing >past it and winning... > >Consider that my tip of the year. :) > >There are others. But I also have them too. :) I guess that christophe knows about this problem. I saw the problem of KBPP vs K some monthes ago also in tiger's game against hiarcs in enrique's games on unequal hardware when tiger only drew hiarcs instead of winning. I know that I told amir ban about the problem of KBPP vs K a long time ago and he did not fix it for a long time (I did not buy Junior6 so I do not know if he fixed the problem in Junior6 but I am sure that he did not fix it in Junior5.9) Junior at least knows about the case of KBP vs something when there is only one pawn but the point is that knowing about positional problems of your program is easier than fixing them without creating new problems(for example being slower). Uri
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