Dear chess lovers and game collectors, it's our pleasure to announce the biggest collection of human chess games between 1800 and 1990. You will not find a bigger collection of classical chess OTB players. If we missed some games, we challenge you to let us know. It is the complete history of chess in the most cleanest and purest form between 1800 and 1990.

The Nineteen Ninety

The OM OTB Chess database 1800-1990 contains 1,010,437 games. It is based on a large number of sources (internet, chess magazines, books, opening master) and it contains a lot of new, still unpublished data on the Internet - e.g. from Di Felice's series of chess tournaments and many corrections errors that occur in other databases and are the result of many years of work.

Player names and tournament names are normalized, refined. The database is carefully free of duplicates and contains only around 9000 non-stroke games, which are there mainly to generate complete tournament tables. (For comparison, MegaBase 2022 contains about 830 thousand games from the mentioned period, of which 48 thousand are without moves. That means Opening Master has a 30% higher collection of games than in the MegaBase. In our database, data from Czechoslovakia, Hungary, the former Soviet Union, USA, Argentina, Spain, Canada are significantly more accurate and precisely focused on the quality.

Our plan in the future is to gradually add more years and supplement or refine existing data to be a source of the largest historical precise collection of human chess games.

The OM 1990 is already uploaded to OM OTB and OM GOLEM folders for our subscribers. For new chess games enthusiasts please download easily at our website:

man playing chess 1863 by Opening Master

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