Atomic Chess

Every capture detonates, clearing the square and its non-pawn neighbours. Blow up the king to win.

Every capture sets off an explosion. The captured piece, the piece that took it, and every non-pawn piece on the eight surrounding squares are all blown off the board at once. You win by exploding the enemy king. You may never make a capture whose blast would also destroy your own king, which means a king can never capture.