Chessgames.com

Chessgames.com is an Internet chess community with over 224,000 members. The site maintains a large database of chess games, where each game has its own discussion page for comments and analysis. Limited primarily to games where at least one player is of master strength, the database begins with the earliest known recorded games and is updated with games from current top-level tournaments. Basic membership is free, and the site is open to players at all levels of ability, with additional features available for Premium members. While the primary purpose of Chessgames.com is to provide an outlet for chess discussion and analysis, consultation games are periodically organized with teams of members playing either other teams of members or very strong masters, including a former US champion and two former world correspondence champions. Members can maintain their own discussion pages, and there are features to assist study of openings, endgames and sacrifices. The front page also features a puzzle of the day, player of the day, and game of the day, the puzzle varying in difficulty throughout the week from "very easy" on Mondays to "insane" on Sundays.

Chessgames.com was founded in 2001 by Daniel Freeman and Alberto Artidiello in association with 20/20 Technologies. They developed software to integrate a chess database with a discussion forum, so that all games and players have a unique message board. The concept was immediately popular as users can kibitz (post comments) on multiple games and pages throughout the site. The Kramnik–Lékó World Championship 2004 match in Brissago was broadcast live on the site. This led to substantial growth in membership and interest, which has steadily increased since then due to other live events and multiple site enhancements.

Co-founder Alberto Artidiello died on March 1, 2015, at the age of 56.

The site's database of games was originally constructed by combining six large databases while weeding out duplicate games. The primary factor for inclusion in the Chessgames.com database is that one of the players should be master strength (an Elo rating of 2200 or above) to reduce low quality games and erroneous fabrications. Their original goal was 750,000 games, their estimate of the total number of serious chess games ever recorded through 2005. The database presently contains over 700,000 games. Each game page lists a user feedback process to eliminate bad games, help correct errors, and remove any duplicates.

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