, a large U.S. chess website, has numerous features that include a statistical database of more than 2 million games that were played by highly rated chess players.




Log in with the following credentials and click 'remember' to explore the database:


Username: jerryi     Password: abc123


The following information was extracted from Wikipedia. is the most frequently visited chess website according to Alexa Internet rankings.


History was originally set up in 1995 by Aficionado, a company based in Berkeley, California, in order to sell a piece of chess tutoring software called "Chess Mentor". In 2005, internet entrepreneur Erik Allebest and partner Jarom ("Jay") Severson purchased the domain name and assembled a team of software developers to redevelop the site as a chess portal. The site was relaunched in 2007. The site was heavily promoted via social media and grew quickly, attracting mainly casual players. In 2009, announced a takeover of a similar chess social networking site, In 2014, the site announced that over a billion live games had been played on the site, including 100 million correspondence games.


Chess tournaments has held regular "death-matches" since January 2012, whereby titled players are paid to play a series of blitz games over a non-stop 3-hour period (5-minute, 3-minute and 1-minute, all with a one-second increment). To date, there have been 38 death-matches, the participants of which include top grandmasters such as Hikaru Nakamura, Dmitry Andreikin, Maxime Vachier-Lagrave, Simen Agdestein, Le Quang Liem, Wesley So, Georg Meier, Arkadij Naiditsch, Loek van Wely, Fabiano Caruana, Judit Polgar, Nigel Short, Wang Yue, Francisco Vallejo Pons and Ruslan Ponomariov.


Computer chess tournament


In November 2017, held an open tournament of the ten strongest chess engines with $2,500 in prize money. The top-two engines competed in a "Superfinal" tournament between the two finalists - Stockfish and Houdini. In the 20-game Superfinal, Stockfish won over Houdini with a score 10.5-9.5. Five games were decisive, with 15 ending in a draw. Of the decisive games, three games were won by Stockfish, and two by Houdini.


Features operates a freemium business model: main site features are free, but many players pay for additional features. Visitors to the site can play on a live chess server and correspondence style games, referred to on the site as "turn-based". Players may also play against chess engines (computer chess), and participate in voting games, in which players form teams and vote on the best move. Additional features include tactics training, chess forums, articles, chess news, downloads, opening databases, groups, live broadcasts, daily puzzles, online coaching and a game database of over 2 million games.


The company publishes a large number of articles on a variety of chess-related topics, including chess strategy, opening theory and history. Regular contributors include Gregory Serper, Bruce Pandolfini, Rafael Leitao, Dan Heisman, Jeremy Silman, Petar Genov, Daniel Naroditsky, Natalia Pogonina and Daniel Rensch. has a policy against the use of chess engines in all forms of the game, except where "specifically permitted (such as a computer tournament)". It utilizes certain undisclosed techniques to catch players using engines in games and bans many on a daily basis. Cheating at Chess on - Questions and Answers". Retrieved May 11, 2017. "We won't disclose our exact methods for catching cheaters (to prevent cheaters from adapting their methods), but it involves cutting-edge technology and human judgement. ... We don't make huge public statements about catching cheaters, but we close many accounts each week for cheating, including accounts for Premium Members who are cheating. We are constantly going through our top players and submitting them to our cheat detection process. ... We think cheating is a terrible disease in online chess in general (on all sites). We have a very strict no-cheating policy and we enforce it with maximum effect whenever we are confident we have found cheating. We feel that we are extremely effective in identifying and dealing with most cheaters. also mutes and bans users who repeatedly break the forum posting rules.