this is not a push to implement them, just some thoughts ... Massacre Chess can be played in several different modes (some of them I mentioned earlier) ...
1. Kamizkaze version where a piece after capturing opponent's piece dies with it ...
2. Sphere version where extreme rows and columns "touch" each other ...
3. Progressive version where players start with single capture ... next player has to capture 2 pieces .... next player 3 and so on ...
4. Double version where players capture 2 instead of 1 piece ...
5. Loser's version where the winner is the one who cannot capture ...
6. Small version played on 6x6 board where players have only 16 pieces each (4 rooks, 4 knights, 4 bishops and 4 queens) and there are random 4 holes eliminated from the board ...
7. Dice version as suggested by some players ...
8. Micro version played on a board 4x4 and each player having standard set of chessmen ...
******
Cheers,
Andy.
P.S Abigaill, you were right, white pieces cannot be loser if played till the end ...