Four-handed chess game playable by two or four players. By Rolf W. Jacobson. Super Chess and Monarch . Dutch booklet on two large chess variants with many options for pieces. Pieces can be put on top of rooks and moved with them.
Kings can move like queens.
A large and complicated chess variant from Eugen Laukamp. Surprise chess . Hilarious variant for less serious chess club evenings. 16 identical pieces per player whose moves are determined by a die. By Sergey Sirotkin.