derived from the Arabic sheikh, who during the Islamic period rode from village to village on donkeys collecting taxes. In mathematics The knight is relevant in some mathematical problems. For example, the knight's tour problem is the problem of finding a series of moves by a knight on a chessboard in which every square is visited exactly once. Knight variations Even among sets of the standard Staunton pattern, the style of the pieces varies. The knights vary considerably. Here are some examples. Unicode Unicode defines two codepoints for knight: ♘ U+2658 White Chess Knight (HTML &#9816;) ♞ U+265E Black Chess Knight (HTML &#9822;) See also Notes Citations References External links Piececlopedia: Knight by Fergus Duniho and Hans Bodlaender, The Chess Variant Pages “The Knight Challenge” by Edward Winter Chess pieces Horses in art