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Betza notation (extended). The powerful XBetza extension to Betza's funny notation.[All Comments] [Add Comment or Rating]
💡📝H. G. Muller wrote on Fri, Jan 27, 2023 11:45 AM UTC in reply to Ruei Ching Hong from Thu Jan 26 11:40 PM:

Kamikaze pieces are a form of promotion (namely promotion to an empty square). The Interactive Diagram does support mechanisms for indicating unusual promotions (like the captureMatrix), but unfortunately promotion to empty is not amongst those. The problem is that promotion code 0 (the code of an empty square) is used to indicate there is no promotion, and the piece remains itself.

It should be possible to use another code for indicating promotion to empty, though, and recognize that as a special case in the routine that performs the moves.