5 ms·

Castling is pretty important move in chess. You can hardly claim an implementation to be fully working without it (although it wasn't the author claiming that).

• wensing 16y ago
  I wonder how many characters of code it would take.
  • niyazpk 16y ago
    The problem with castling is that for a move that is only once done in a chess game we have to keep track of a couple of variables and do a check for every move in the tree. It is rather unpleasant to code and it will increase the program size and decrease the speed (by a bit I mean). May be that is because they ended up not implementing castling.
  • Isofarro 16y ago
    it's one of three special cases where it isn't moving a piece from and to a square. The other being capturing enpassant, and queening a pawn. Certainly cannot claim to be complete without being able to play a legal move.
    • jpwagner 16y ago
      ...promoting a pawn ...and then there's the 50 move and repetition draws ...and a non-chess player may not realize how vital a knowledge of openings is but it basically works
      • ars 16y ago
        Also doesn't detect stalemate.
        • jpwagner 16y ago
          Also doesn't detect stalemate. umm...are you saying that when in a position where it's impossible to make a move, it still moves?
          • ars 16y ago
            No, it just sits there. Does it not report win/loose? I only played one game.