Author: Pete Galati
Date: 13:54:13 02/09/01
Go up one level in this thread
On February 09, 2001 at 15:45:05, leonid wrote: >On February 09, 2001 at 11:51:37, Pete Galati wrote: > >>On February 09, 2001 at 08:40:05, Uri Blass wrote: >> >>>On February 09, 2001 at 08:25:02, Hans Havermann wrote: >>> >>>>On February 09, 2001 at 06:51:15, leonid wrote: >>>> >>>>>>[D]1bqQBnRn/3N2Qb/Q1QN2np/1Q1Q1qpk/4Qqbn/2B1Qrnn/2Q5/K1R5 w - - >>>> >>>>Black has too many promotions. :) >>> >>>Right. >>> >>>Most chess programs cannot analyze positions when black has 7 promotions and 2 >>>pawns. >>> >>>Chessbase programs do not accept the position and the engine is not >>>important(after Board, Setup position,paste Fen I cannot tell the program ok. >>> >>>I think that it is a bug in the chessbase interface because the interface is >>>made for many engines and it is possible that some of the engines have no >>>problem to analyze the illegal position. >>> >>>I think that the interface should allow putting illegal position in the board >>>and I do not understand the decision not to allow putting illegal positions. >>> >>>Uri >> >>Well, look at it this way though, this position crashes Crafty when I paste it >>into Crafty running in text mode, and I can paste the position into Winboard, >>but niether TCB nor Crafty will analyze the position once it's there. I suppose >>I could fix the position so it IS legal, but then it would be a different >>position. >> >>Pete > >I have no idea why in Crafty it could be the problem to solve position like >above. I never used Crafty for this purpose. I used it only for playing chess. >Great program! But I was very interested to know why many of programs that I >used around 4 eyars ago crashed on positions, even every modest compared with >the last one. Now I only have some guessing about what it could be. Maybe some >programs use some look-up tables that is the beginning for all limitations. >Maybe number of moves was limited for each ply, taking in consideration that DOS >was very restrictive system. I just don't know... > >Leonid. Well, fwiw, I removed one Queen, the one on Wht's 8th rank, and then Crafty didn't mind the position [D]1bq1BnRn/3N2Qb/Q1QN2np/1Q1Q1qpk/4Qqbn/2B1Qrnn/2Q5/K1R5 w - - 0 1 but I have no idea how important that Queen was to that position. With the position like that, Crafty is intent on doing Nxf5 but it hasn't shown me # yet. Pete
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