Timeline

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* 1995: The domain Chess.com was originally set up by Aficionado, a company based in Berkeley, California, to sell a piece of chess tutoring software called "Chess Mentor".
* 2005: Internet entrepreneur Erik Allebest and partner Jarom ("Jay") Severson bought the domain name and assembled a team of software developers to redevelop the site as a chess portal.
* 2007: The site was relaunched. The site was heavily promoted via social media.
* 2009: Chess.com announced a takeover of a similar chess social networking site, chesspark.com. Chesspark founders Jack Moffitt and Brian Zisk had moved to work on a web search startup.
* October 2013: Chess.com acquired the Amsterdam-based chess news site chessvibes.com, which provided coverage for chess tournaments. It was founded and owned by Dutch chess journalist Peter Doggers in February 2006.
* 2014: The site announced that over a billion live games had been played on the site, including 100 million correspondence games.
* January 2016: Chess.com announced "v3", the two-year overhaul of its previous interface. The site introduced new features including computer analysis of games, and the chess variants of crazyhouse, three-check chess, king of the hill, chess960 and bughouse.
* June 2017: The 2,147,483,647th (= 231-1) game was played, which caused the iOS app to stop working for those with 32-bit Apple devices. This occurred because of an integer overflow problem whereby the number was too large to be represented in the number of storage bits that were used.
* May 2018: Chess.com announced that it had acquired the 3300+ Elo-rated commercial chess engine Komodo, then ranked 3rd behind Stockfish and Houdini. In conjunction, the Komodo team announced the addition of the probabilistic method of Monte Carlo tree search machine learning, the same methods used by the recent chess projects AlphaZero and Leela Chess Zero.
* November 2020: Chess.com acquired the rights to broadcast the World Chess Championship 2021, which is broadcast on live streaming platform Twitch.
* August 2022: The Play Magnus Group accepted an offer to be acquired by Chess.com. The acquisition is scheduled to take place within eight weeks of the agreement at a value of 800 million kr (US$80 million). According to *Dot Esports*, the Play Magnus Group was only making a "sustainable profit" on Chessable and the merge left "no other realistic chess competitor" except the free, open-source Lichess.

1. ↑ Chess Mentor by Aficionado (1997-07-10).
2. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `techcrunch`
3. ↑ Template:Cite news
4. ↑ Peter Doggers (2013-10-03). Breaking: Chess.com to acquire. ChessVibes.
5. ↑ Mike Klein (2013-10-03). Chess.com to Acquire ChessVibes. USCF.
6. ↑ Pete Cilento (2014-12-15). Chess.com: 1 Billion Games Served. Chess.com.
7. ↑ Introducing The New Chess.com (Version 3). Chess.com (2016-01-21).
8. ↑ Template:Cite magazine
9. ↑ Keith Collins (2017-06-14). A popular chess app inadvertently broke the mathematical limits of older Apple devices. QZ.
10. ↑ Why Chess.com Broke on 32-bit iOS Devices. Drinkingcaffeine.com (2017-06-13).
11. ↑ Chess.com Acquires Komodo; Launches New 'Monte Carlo' Version Similar To AlphaZero. Chess.com (2018-05-24).
12. ↑ Komodo 12 with AlphaZero techniques. Chessbase (2018-05-28).
13. ↑ RS, Prasad (November 18, 2020). Chess.com acquires broadcast rights for 2021 FIDE World Championship (en).
14. ↑ Hermann, Lene Marita Berg (24 August 2022). Chess vil by 13 kroner aksjen for hele Play Magnus Group (Norwegian). *Dagens Næringsliv*. Retrieved on August 26, 2022.
15. ↑ Kelemen, Luci (24 August 2022). Chess.com to acquire Play Magnus Group. *Dot Esports*. Retrieved on August 26, 2022.