Portable Game Notation Specification and Implementation Guide. This is the link to the updated documentation or see the PGN-Standard.txt file in this repository.
- To update the standard for unclear specifications.
- Improve the standard.
- PGN Supplement
Contains the latest proposals and were already applied such as[%clk 1:05:23],[%emt 0:05:42]and others. - Chess Programming
- PGN-extract
- Python-Chess
- Steven Edwards
- The document PGN-Standard.txt is from opensource.apple.com