Author: Paul
Date: 03:20:49 05/04/01
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On May 03, 2001 at 18:19:28, Dann Corbit wrote: >I am wondering about tools to tell me if a position is impossible or not. For >instance, this position looks impossible at first glance: >r2qk2r/ppp2ppp/2n2n2/3pp3/1b4b1/8/PPPPPPPP/RNBQKBNR w KQkq - > >But we can see from here, that it is perfectly legal: >[Event "Edited game"] >[Site "DANNFAST"] >[Date "2001.05.03"] >[Round "-"] >[White "-"] >[Black "-"] >[Result "*"] > >1. Nf3 d5 2. Ng1 e5 3. Nf3 Bb4 4. Ng1 Bg4 5. Nf3 Nc6 6. Ng1 Nf6 >* > >So, my burning question is, are there any tools that will tell me if a position >is not valid (could not occur in a chess game)? > >I know beforehand that the piece count will be legal (IOW, no cases with 9 pawns >or two same color kings or anything weird like that...) Searched the CCC archives for backtrack programs (I have a Paradox database), coz I remember something like this came up before, found this: Popeye: http://www.leo.org/pub/rec/games/popeye/ Natch : http://natch.free.fr/index.html. Maybe it's of some use? Paul
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