Knight (chess) king); in descriptive chess notation, "Kt" is sometimes used instead, mainly in older literature. In chess problems and endgame studies, the letter "S", standing for the German name for the piece, "Springer", is often used (and in some variants of fairy chess "N" is used for the popular fairy chess piece, the nightrider). Even among sets of the standard Staunton pattern, the style of the pieces varies. The knights vary considerably. Here are some examples. The knight, along with the king and the rook, has the oldest defined movement of any chess piece, its movement being unchanged since the invention
Algebraic notation (chess) problems (where "N" stands for the nightrider, a popular fairy chess piece). Players who speak other languages may employ different letters, for example, French-speaking players use "F" for bishop (from "fou"). In chess literature, especially that intended for an international audience, the language-specific letters are often replaced by universal icons for the pieces, for example, Nf3 is represented as ♘f3. This style is known as figurine algebraic notation. Pawns are not identified by uppercase letters, but rather by the absence of one. Distinguishing between pawns is not necessary for recording moves, since only one pawn can move to a given