Castle your king with the rook to get into a safer position! Write 0-0 for a two-square move, or 0-0-0 for a three-square move. Look at the worksheet with your child; on the first chessboard, the king has moved two squares and the rook is beside it. On the second, the rook has jumped over the king. Let your child use their castling knowledge to answer the questions in the easy pdf.