games - Generates a database file called games (with extension specified by flag) in the current directory.DATABASE - The path to the newly generated database file.# Converts the metadata of PGN files from Lichess' game database to a database file. $ zugzwang create * -adapter, -adapter=ADAPTER Once you have installed the CLI, you can use it with the command: $ zugzwang To install the CLI: $ gem install zugzwang To fit with SQL data-type format specifications (and in order to optimize querying), the following PGN metadata fields have had their formats changed within the generated database file: Fieldġ1 or -11 (Integer without + for positive) Since this CLI is not concerned with individual moves or position analysis, this data is discarded during the parsing process. Particularly with the game record and some of the metadata fields. This format is essentially the same as standard PGN formats, but with a few differences. The extensive game database provided by Lichess (over 368 million games as of July 2018) uses the following format for each game of within their PGN files. PGN ( Portable Game Notation) files are plain-text files that provide records of chess games along with their metadata. Lightweight CLI for converting the metadata of PGN files from Lichess' game database to a database file, using lazy file enumerators for optimizing the conversion of large PGN files with millions of chess games.

Create a pgn chess file