Author: Bertil Eklund
Date: 07:13:54 12/01/01
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On December 01, 2001 at 09:52:54, Harald Faber wrote: >On November 30, 2001 at 18:59:45, Bertil Eklund wrote: > >>Hi! >> >>I can't tell for sure if it is a problem with this match, but that has been >>known for a long time that the matches are played with the four Turbo-Cds from >>Chessbase and some programs handle this wright and some don't. I haven't seen >>this problem in about 200 games with the Tigers but Paul has seen it in several >>games. The main reason that the Tigers (eventually) miss the first place is the >>missing knowledge, that rook and bishop and rook and knight vs rook can't win in >>most endgames. I have seen the Tigers incorrectly exchange down to these >>endgames in several (in fact surprisingigly often) cases. > >So, do you think that Tiger would exchange IF Tiger had ALL TBs and would see >that this 5-man is draw? The problem is that it exchanges down to in example rook and bishop vs rook and pawn and believe it is winning. I believe it is necessary to include this knowledge and for example wrong coloured bishops in the programs otherwise they plays incorrectly when there is one or more pieces included. >>Note that the above >>problem is correctly handled by several engines in example Crafty. > >I can implement the code for mating with b+n or I can let it out and say "the >TBs solve this". Christophe obviously did the 2nd, who is to blame? I think that most users play with the delivered 3 and 4 man tablebases. There are also a lot of users that plays with the four Turbo-cds from Chessbase or Millenium, in fact it is probably a houndred times more people that only use the standard tbs that is included with the programs. Bertil >>It is always >>possible for the programmers to recommend the settings if they for example don't >>want us to use the tbs or recommend other settings. Hopefully before the matches >>and not afterwards. >> >>Bertil
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