Pieces taken are held hostage and can be exchanged against other pieces and then dropped. With sample games and tactical tips. By John Leslie. The Iron Knight , and other variants with uncapturable pieces. J Jumping Chess .
Pieces capture by jumping.
By Peter Aronson. K Kamikaze Chess . Capturing pieces also are removed. King with a Shotgun . Twice each game, the King can make a non-moving Rook capture.