BTW, some variants allow only promotion of a piece that was lost before, and in those it can make sense to collect the captured pieces in a separate area (without color flip), and move them from there to effect promotion.
Game Courier does this automatically. There is an associative array called capturedpieces that keeps track of the pieces captured and the associated count. It uses the starting array to know the total number of each piece. When playing a game, there is a display that shows all the captured pieces for both players, but that box only appears when something has been captured.
Game Courier does this automatically. There is an associative array called capturedpieces that keeps track of the pieces captured and the associated count. It uses the starting array to know the total number of each piece. When playing a game, there is a display that shows all the captured pieces for both players, but that box only appears when something has been captured.