Peter Hatch wrote on Wed, Nov 27, 2002 04:08 PM UTC:
>>And there's another detail that all of us forgot! When the crooked
bishop is on the edge of the board, one of its paths in the (0,2)
direction is blocked, even though the (0,2) square might be on the
board.<<
It wasn't forgotten - Betza mentions it on the page, and my second comment
gives what I think is the correct formula for figuring it.