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(c) The rook moves horizontally or vertically, any number of squares
at once.
(d) The bishop moves diagonally, any number of squares at a time.
The queen, rook and bishop cannot “jump across” another piece.
For the sole exception (where the rook “jumps over” the king), see
below under “Castling”.
(a)
(c)
(b)
(d)