The Knight technically does not 'jump' but it appears to be able to 'jump' over pieces of its own color as well as pieces of its opponent's color. The other pieces of the same color cannot jump over each other. Neither can the other pieces jump over an opponent's piece.
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Unless the piece is a knight, you cannot jump your own pieces. It would also be helpful to review the rules on castling as the king appears to jump its own rook in this move.