The mann (plural mannen[1]) or man is a fairy chess piece that may move to any adjoining square.
It is similar to the king, but it is not a royal piece (i.e. it is not subject to check and checkmate), and it cannot castle.
It is otherwise treated as a normal chess piece (i.e. it can be captured and is not subject to check or checkmate).
Although it is rather slow, the mann is excellent at both attacking and defending nearby pieces and pawns, similar to the king.
The mann is one of the most simply described chess pieces and as such has a long history and has gone by many names.