> In standard chess it's relatively simple, two position are > equal if: > > - all squares do contain the same pieces > - both positions have same en-passant possibilities > - same sides to move > - same castling rights > > The latter (same castling rights) is also important because > generally > the strategy in a game considers the castling rights.
..... > Steve: The position search in Scid/Scid-vs-PC does only use > the first > three conditions: > - all squares do contain the same pieces > - both positions have same en-passant possibilities > - same sides to move > This means Scid does not consider the castling rights. Try > the appended But does it make any practical difference ? ie - How many real games do you have with identical board setups but different castling rights. (Please forward games to me). cheers, Steve
