Forsyth-Edwards notation

Forsyth-Edwards Notation, which uses run-length-encoding for empty spaces in chess positions.

Forsyth-Edwards Notation, a standard notation for describing a particular board position of a chess game.

The specification of an en passant target differs slightly from standard Forsyth-Edwards Notation.

The positions of other pieces can also be added; this produces a notation that provides the same information as Forsyth-Edwards Notation.

In recent times, Forsyth notation has been extended as Forsyth-Edwards Notation for use with computers.

FEN: The initial position of the chess board, in Forsyth-Edwards Notation.

Forsyth-Edwards notation (FEN).

There is also a notation for recording positions in text format, called the Forsyth-Edwards notation (FEN).

X-FEN is an extension of Forsyth-Edwards Notation (FEN).

Forsyth-Edwards Notation (FEN) is used to record the starting position for variants (such as Chess960) which have initial positions other than the orthodox chess initial position.

The traditional Forsyth-Edwards Notation is not sufficient to represent all possible positions in 8x8 Chess960 (aka Fischer Random Chess) or 10x8 Capablanca random chess (CRC).

From the sample game given in Forsyth-Edwards Notation, we see that FEN includes the square e3 as an en passant square after White makes the first move of the game 1.

Games recorded using the Portable Game Notation (PGN) can record the initial position using Forsyth-Edwards Notation (FEN), as the value of the "FEN" tag.

Nearly all of today's programs can read and write game moves as Portable Game Notation (PGN), and can read and write individual positions as Forsyth-Edwards Notation (FEN).