How the Bishop Moves and Captures
The Bishop moves diagonally any number of squares, forwards or backwards. The diagram below shows all the possible squares to which the bishop may move. Each side has two bishops; one bishop moves along the light coloured squares and the other bishop moves along the dark coloured squares.
The Bishop's path can be blocked by other pieces on the chessboard. In the diagram below the Bishop now has less choice of squares to which it can move because the other White pieces block its path.
In the diagram below the White Bishop is able to capture the Rook. She does this by removing the Rook from the board and placing her Bishop in its place.
This diagram shows the position after the Bishop has captured the Rook.