H. G. Muller wrote on Sun, Nov 20, 2016 10:45 PM UTC:
In Fairy-Max I use the ultimate robust way for testing whether in check: just run the move generator for the opponent, and see if it captures King. But that is slow. A more general fast way for detecting attacks would be to not start from the board but from the piece list, and check for every piece whether is is alligned with the King for checking based on a lookup table indexed by the relative position to the King.
In Fairy-Max I use the ultimate robust way for testing whether in check: just run the move generator for the opponent, and see if it captures King. But that is slow. A more general fast way for detecting attacks would be to not start from the board but from the piece list, and check for every piece whether is is alligned with the King for checking based on a lookup table indexed by the relative position to the King.