A quote inside a tag value is represented by the backslash immediately followed by a quote. Tag pairs begin with an initial left bracket. PGN text begins with a set of 'tag pairs' (a tag name and its value), followed by the 'movetext' (chess moves with optional commentary). The export format representations generated by different programs on the same computer should be exactly equivalent, byte for byte. The export format is rather strict and describes data prepared under program control, similar to a pretty printed source program reformatted by a compiler. The import format describes data that may have been prepared by hand, and is intentionally lax a program that can read PGN data should be able to handle the somewhat lax import format. There are two formats in the PGN specification, the 'import' format and the 'export' format. PGN is structured 'for easy reading and writing by human users and for easy parsing and generation by computer programs.' The chess moves themselves are given in algebraic chess notation using English initials for the pieces. Edwards, and was first popularized and specified via the Usenet newsgroup. There is a discussion regarding these subtleties at the site's forum.PGN was devised around 1993, by Steven J. Also, while it does merge the text comments, it doesn't really merge the annotations (arrows and circles), and it will also include annotations from repertoires of the opposite color (hence the reason why you need to remove all repertoires before you begin). If you are already using the opening trainer at you would have to first export/backup your repertoires and then re-upload them afterwards which could be a nuisance. In order to get a clean merge, you have to remove all existing repertoires and reload the page before uploading the PGN files to merge, and then export them. The modified version is available here.įor those who can't be bothered to install Python, and who doesn't have Chessbase, chesstempo is another free tool that also does real PGN game merging, but there are some issues with that. There are some technical caveats but it works. I looked at the merge-pgn tool and made some modifications to it to have support for also merging text comments and also software comments/annotation (arrows and circles etc).

Create pgn chess file