Mike Nelson wrote on Tue, Jan 14, 2003 05:50 PM UTC:
I wonder if a game could be devised where you could pocket any piece
execept the king, but there was a cost. For example, using the beginner's
piece values, perhaps in order to pocket a piece, you had to sacrifice 1/3
of its value. This would give:
Pawn = free
Knight or Bishop = pawn
Rook = 2 pawns
Queen = 3 pawns, Knight, or Bishop
Non-material costs could be used instead (double move for enemy, etc.)