Object: Checkmate the opponent's King.
 
Knights cannot jump, only 'limp': they need a free adjacent square to move one step orthogonally and then one step diagonally.
Apart from this, standard chess rules apply.
 
Variant 2: the Knights can jump over friendly pieces, but not over enemy pieces.
Variant 3: the Knights can jump over enemy pieces, but not over friendly pieces.
 
 
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