If you're unsure of where they want to move, you can request up to 180 days of local storage. If you live in government quarters and separate or retire, you may move locally out of the quarters (Local Move) and still have your shipping rights within the authorized time limit. Unusual or Arduous Sea Duty Orders.
Chess rules say that bishops move just like the queen except they can't move forward, backward, left or right. Diagonally only just as many spaces as desired without jumping another chess piece. Because bishops move diagonally, they will always remain on their original square color as per the rules of chess.
A chess board represents an abstract space and a chess piece is a member of a set of finite elements where to each element is assigned a rule on how to change its coordinates in the abstract space. These rules also depend on the positions of other pieces. For example, a rule for a bishop is that it cannot proceed past another piece in its way.