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) an ellipsis (...) fills the position of the White move, for example: Descriptive notation was usual in the Middle Ages in Europe. However, a form of algebraic chess notation, that seems to have been borrowed from Muslim chess, appeared in Europe in a 12th-century manuscript, referred to as MS. Paris Fr. 1173 (PP.). The files run from a to h, just as they do in the current standard algebraic notation. The ranks, however, are also designated by letters, with the exception of the 8th rank which is distinct because it has no letter. The ranks are lettered in reverse –