The bishop is one of the peices of the chess board, You only have 2 bishops, One of them is on a white squar, And the other is on a black squar, The white squared bishop moves diagnolly on the the white squares, The other black squared bishop moves diagnolly on the black squars, Neither bishops can move on the opposite color, How can you get another bishop if it got captured? You can get another bishop by premoting from a pawn.