With a grand total of 119,533 games (73,854 full games and 45,679 game fragments), in numerical terms it is the richest collection of annotated games on the market - pure a triumph of quality over quantity!

Quality Base is a complete collection of all the games ever published in Informant, from its very first issue, presenting games from 1965 right up to the very last issue – Informant 142.

Quality Base by Chess Informant is a unique historical collection of annotated chess games which will serve as a premium database for daily use by competitive players and chess lovers worldwide.