4. Chess variants with modified rules
These chess variants change one of the general rules of chess, such as the objective of the game.
Checkmate the knight – the kings are regular, capturable pieces
Capturing is compulsory, the player who loses all pieces wins
No check or checkmate – players win by capturing all opposing pieces
The left and right sides of the board are joined, as if the game was played on a cylinder
The bishop and the queen bounce off from the left and the right sides of the board.
The bishop and the queen bounce off from the four edges of the board
Pawns move diagonally and capture orthogonally forwards