Betza's funny notation ones. The notation is based on dividing moves that can be made on a board of squares into groups of symmetry-equivalent moves, the moves within a group differing only in the direction in which the step is taken. Each such group (referred to as "atom") is indicated by a capital, such as N for the 8 moves of the knight. The letter that represents the atom is usually the first letter of the simplest piece from current or historic chess variants that has this move, such as A and F for the alfil and ferz of shatranj (ancient Arabic/Persian chess).
Mann (chess) Mann (chess) A man (german: Mann) is a fairy chess piece often used in chess variants. It moves like a king, but is not otherwise treated as one (i.e., it has no ). In diagrams in this article, the man is represented by an inverted king. Chess moves in this article use M as notation for the man. The man moves as a king in chess (one square in any direction) but is otherwise treated as a normal chess piece (i.e. can be captured; is not subject to check or checkmate). The man is one of the most simply described