💡📝Ken Franklin wrote on Thu, Jan 22, 2004 10:53 PM UTC:
Peter's piece comments re Alfils, etc is half right. That's one way
the pieces move. It is also the only way those pieces may capture!
But... Bishops, Rooks, and Queens may also move into one adjacent space
when it's empty. Therefore, it is not a coding bug.
Also the win-conditions (captured King) come into effect with the
accompanying variants featuring multiple captures. In these cases,
Zillions was not recognizing a checkmate via indirect capturing
movements.
One factor that can be confusing is an announced checkmate when
(apparently) the defending King can either move out of the way or the
attacking piece could be taken. Remember that capturing moves have a
mandatory priority (including before defense of a Check).