ECO Database 2025

[jshriver]

Hope everyone here is well. I'm looking for the best and most updated list of ECO positions and moves, preferably in PGN format. However any text format will do (json, xml, etc).

The eco.pgn databased created by David Barnes and others (for pgn-extract) seems to be the best so far. Looking for recommendations if there is a better or more updated version.

For reference:
https://www.cs.kent.ac.uk/~djb/pgn-extract/eco.pgn

Thanks for your time,
-Joshua Shriver

[Frank Quisinsky]

I think this work is genial, by Ferdinand Mosca:

https://github.com/fsmosca/pgnhelper
https://github.com/fsmosca/eco
forum3/viewtopic.php?f=2&t=80006

Best
Frank