'Arabian checkmate' is a special type of checkmate in chess that is performed with a rook and a knight. The rook and knight of the attacking side are used to perform this checkmate. The opponent's king is usually in a corner of the board. The rook attacks the king vertically or horizontally from a square adjacent to the king (possible squares are marked with circles). The knight is positioned to attack the square next to the king and simultaneously defend the rook.
The term 'Arabian' is due to the fact that similar positions were often encountered in ancient Arabic chess treatises and problems.