Forsyth-Edwards notation


Forsyth-Edwards Notation, abbreviated FEN, is a chess entry for determining the position of a chess game. The goal of FEN is to provide all the necessary information to re-start the game from the position.

FEN is based on a system invented by Scottish journalist David Forsyth. His system became popular in the nineteenth century; Steven J. Edwards developed the system to work with computers. FEN is part of the Portable Game Notation for Chess, because it defines positions different from the initial. Definition

The FEN record defines a game position, all in one line and using only ASCII characters. FEN has 6 fields, each field is separated from the other. The fields are:

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