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Forsyth-Edwards Notation

Tool to display / translate a Forsyth-Edwards notation (FEN) of a chess game. The line notation FEN allows to describe any position of a chess game.

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Forsyth-Edwards Notation -

Tag(s) : Notation System, Board Games

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Forsyth-Edwards Notation

FEN Reader


See also: Chess Notations

Answers to Questions (FAQ)

How does FEN notation work?

In chess games, the FEN notation uses a single line to describe the contents of each box of the box in rows from top to bottom (seen from the white side). The characters describing the parts ar:

KWhite KingkBlack King
QWhite QueenqBlack Queen
RWhite RookrBlack Rook
BWhite BishopbBlack Bishop
NWhite KnightnBlack Knight
PWhite PawnpBlack Pawn
1-81 to 8 empty boxes

Example: The starting position of a chess board is: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR

The chessboard description is completed with 5 informations:

w or bIndicates the next player (w = white, b = black)
KQkqIndicates possible castling. K and / or Q for black castle respectively coded King or Queen and likewise k and / or q for the white castle
- or coordinateCoordinates of a possible case of taking en passant
0 to 50Number of moves since last catch
1 to 999Move number

What does FEN stand for?

FEN is the acronym for Forsyth-Edwards Notation, named after David Forsyth, a Scottish journalist who invented this notation and Steven Edwards who adapted it to make it unambiguous and compatible with computers.

See also SAN notation

Source code

dCode retains ownership of the online "Forsyth-Edwards Notation" source code. Except explicit open source licence (indicated CC / Creative Commons / free), the "Forsyth-Edwards Notation" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "Forsyth-Edwards Notation" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, copy-paste, or API access for "Forsyth-Edwards Notation" are not public, same for offline use on PC, tablet, iPhone or Android ! Remainder : dCode is free to use.

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Please, check our dCode Discord community for help requests!
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Questions / Comments

Thanks to your feedback and relevant comments, dCode has developed the best 'Forsyth-Edwards Notation' tool, so feel free to write! Thank you!


Source : https://www.dcode.fr/fen-chess-notation
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