.PGN File Extension
What is a PGN file?
Text-based file format used to record moves in a chess match; also includes the event name, location, date, round, player names, and result of the game.
The header information of a PGN file is formatted using tags. After the header, player moves are described using "movetext," a syntax based on Standard Algebraic Notation (SAN).
Various chess programs and PGN Viewers can be used to view PGN files.