7 variants of chess

1. Atomic chess: any capture on a square results in an "atomic explosion" which kills (i.e. removes from the game) all pieces in any of the 8 surrounding squares, except for pawns.
2. Andernach chess: a piece making a capture changes colour.
3. Madrasi chess: a piece which is attacked by the same type of piece of the opposite colour is paralysed.
4. PlunderChess: the capturing piece is allowed to temporarily take the moving abilities of the piece taken.
5. Suicide chess: capturing moves are mandatory and the object is to lose all pieces. There is no check - the king is captured like an ordinary piece.
6. Checkless chess: players are forbidden from giving check except to checkmate.
7. Hierarchical chess: pieces must be moved in the following order: pawn, knight, bishop, rook, queen, king. A player who has the corresponding piece but cannot move it loses the game.