Software:Chess.com

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Short description: Internet chess website
Chess.com, LLC
Chess.com logo (2020).svg
Chess.com Homepage (as of December 2017).PNG
Chess.com homepage
Type of businessInternet chess server, Social media website
Type of site
Internet chess server
Available inAfrikaans, Albanian, Arabic, Armenian, Azerbaijani, Bengali, Belarusian, Bosnian, Bulgarian, Catalan, Chinese, Chinese (Hong Kong), Chinese (Taiwan), Croatian, Czech, Danish, Dutch, English, Estonian, Filipino, Finnish, Flemish, French, Galician, Georgian, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Malay, Norwegian, Persian, Polish, Portuguese, Portuguese (Brazil), Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swahili, Swedish, Tagalog, Turkish, Turkmen, Ukrainian, Uzbek, Vietnamese
FoundedMay 2007; 16 years ago (2007-05)
Headquarters
United States
Founder(s)
  • Erik Allebest
  • Jay Severson
Key people
  • Erik Allebest (co-founder, CEO)
  • Jay Severson (co-founder, chief technical advisor)
  • Daniel Rensch (chief chess officer)
  • Brenan Klain (chief marketing officer)
IndustryInternet
Employees400+[1]
Website{{{1}}}
RegistrationOptional
Users150 million+
Current statusActive
Written inJava,[2] JavaScript, PHP

Chess.com is an internet chess server and social networking website.[3] The site has a freemium model in which some features are available for free, and others are available for accounts with subscriptions. Live online chess can be played against other users in daily, rapid, blitz or bullet time controls, with a number of chess variants available. Chess versus a chess engine, computer analysis, chess puzzles and teaching resources are offered.

As one of the largest chess platforms in the world,[4] it achieved the milestone of 100 million users on December 16, 2022. Chess.com has hosted online tournaments including Titled Tuesdays, the PRO Chess League, the Speed Chess Championships, PogChamps, Online Chess Olympiads and computer vs. computer events.

History

Founding

The domain Chess.com was originally set up in 1995 by Aficionado, a company based in Berkeley, California to sell Chess Mentor, a chess tutoring software program.[5] In 2005, Internet entrepreneur Erik Allebest and partner Jarom "Jay" Severson, who met as undergraduate students at Brigham Young University, bought the domain name and assembled a team of software developers, redeveloping the site as a chess portal.[6] The site was relaunched in 2007,[3] having heavy campaigning and promotion on social media.

Two years later, Chess.com acquired a similar chess social networking site, chesspark.com.[7] In October 2013, Chess.com acquired the Amsterdam-based chess news site chessvibes.com as well.[8] This news site, founded and operated by Dutch chess journalist Peter Doggers, continued to cover chess tournaments in a digital setting.[9][10]

Growth in the 2010s

The website reached a milestone in 2014, when it announced that over a billion live games had been played on the site, including 100 million correspondence games.[11] In January 2016, Chess.com announced a two-year overhaul of its previous interface (titled 'v3').[12] The site introduced features including computer analysis of games, and the chess variants of crazyhouse, three-check chess, king of the hill, chess960 and bughouse.[12] Chess.com reached another milestone in June 2017, as 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.[13][14]

In May 2018, Chess.com acquired the 3300+ Elo-rated commercial chess engine Komodo, which ranked third behind Stockfish and Houdini at the time of acquisition.[15] 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.[16]

In November 2020, Chess.com acquired the rights to broadcast the World Chess Championship 2021, which is broadcast on live-streaming platform Twitch.[17]

Response to the Russian invasion of Ukraine

In response to the 2022 Russian invasion of Ukraine, Chess.com published two articles that were critical of the invasion and replaced Russian flags with grey flags that linked to these articles. In retaliation, Chess.com was blocked in Russia. The site blocked Sergey Karjakin, Russian (formerly Ukrainian) grandmaster, over his support for the invasion, and Karjakin in turn supported Russia's block of the website.[18][19][20][21]

Chess cheating controversy

In September 2022, Chess.com was caught in the furor of a controversy regarding cheating in professional chess games. A controversy erupted with accusations by grandmaster Magnus Carlsen against Hans Niemann.[22][23] Leaked emails revealed that some people cheated on the Chess.com platform in games involving prize money and that Chess.com removed some players' accounts, including grandmaster Maxim Dlugy, who had been found to be cheating.[24] In August 2023, a US District Court judge dropped the lawsuit filed by Niemann, ending the scandal.[25]

Chess.com Global Championship

In November 2022, The Chess.com Global Championship was inaugurated with a $1,000,000 prize pool.[26] 8 players that advanced from the CGC Knockout competed for a $500,000 total prize fund and Global Champion title in the finals taking place in Toronto, Canada. Wesley So became the first Chess.com Global Champion, defeating Nihal Sarin in the finals with a match score of 4.5–1.5.[27]

Other

Chess.com announced it had over 100,000,000 members in December 2022.[28]

In January 2023, Chess.com added in five new "cat" chessbots, including Mittens.[29] These bots were removed and replaced by AI bots in February 2023.[30]

In January 2023, due to an influx of traffic, Chess.com's databases crashed.[31]

Features

Chess.com operates on a freemium business model. Some features are free but others are unavailable or limited in some respects until a subscription is paid.[32]

Gameplay

Users can play against other players in a variety of time controls which are grouped into Rapid, Blitz, Bullet, Daily, and Monthly (correspondence chess). A number of chess variants are available on the live server, including crazyhouse, three-check, four-player, King of the Hill, chess960, atomic, Racing Kings, Duck Chess and bughouse. Users can also play against a computer. Along with the standard computer, it has bots representing popular streamers and top chess players. One such engine was Mittens, which became popular in early 2023.[33]

Puzzles

There are roughly 600,000 puzzles in the Chess.com database. A player gets a rating based on their performance and speed in solving the puzzles. It offers other special modes of puzzles such as puzzle rush and puzzle battle. Everyday, one puzzle is chosen as the Daily Puzzle which can be played directly from the homepage.[34]

Puzzle Rush

Puzzle Rush is a special mode of puzzles in which the player has to solve as many puzzles as they can within the selected time. If the player solves 3 puzzles incorrectly, their rush finishes.[35][36]

Puzzle Battle

Puzzle Battle is another special mode of puzzles in which a player competes with another player to solve the most puzzles in the given time of 3 minutes. If a player solves 3 puzzles incorrectly, they cannot solve any more puzzles. The person who solves the most puzzles is the winner and the rating of the players change accordingly, you will also gain season points, at the start of every month season points return to zero.[37]

Puzzle Survival

Puzzle Survival is another special mode of puzzles in which a player solves the most puzzles with no time limit.[36] If the player solves 3 puzzles incorrectly and strikes out, they cannot solve any more puzzles the person sets a score of the most puzzles after their 3rd strike.[35][36]

Daily Puzzle

Every day Chess.com adds a daily puzzle that gets harder throughout the week, Monday has the easiest puzzle while Sunday has the hardest. Every time a daily puzzle is completed the player gets a streak, but if they don't do the daily puzzle on time, they will lose the streak.[38]

Computer Opponents

In addition to online games, the website has options to play against computers of varying strengths. Games played against computer opponents are not rated and will not affect the ratings given for playing human opponents. The website provides the Komodo chess engine with a scalable difficulty feature. In addition, there are computer personalities that simulate conversation based on actions through the game such as checks and captures. These bots will also play with their styles based on their given personality. With the freemium model the website is built on, the first personality bot in each skill level is free to play against, with the rest being unlocked by purchasing a membership.[39] In addition to the default personalities, there are computer personalities that resemble streamers such as xQc, Pokimane, Andrea Botez, and other PogChamps players.[39]

Lessons

Chess.com has a unique feature of lessons. The lessons have videos which explain the topic and challenges which are puzzles regarding the topic explained in the videos. Contributors can create lessons but some are created by the core Chess.com team.[40] There are multiple stages of difficulty in the lessons ranging from beginner to advanced, as well as specialized lessons for specific openings.[41]

Torch
Original author(s)Finn Eggers, Andrew Grant, Jay Honnold, Kim Kåhre, Dietrich Kappe, Michael Whiteley[42]
Developer(s)Chess.com
TypeChess engine

Torch

Torch is a chess engine created by Chess.com.[42][43] Torch finished second in the Chess.com Computer Chess Championship 20: Bullet,[44] 21: Blitz,[45] and 21: Bullet,[46] only behind Stockfish in each case. It initially participated in the tournament under the name "Mystery".[43][47] It is freely useable through Chess.com's analysis page.[48] It has also been tested by some chess engine rating lists.[49][50]

The team behind Torch is composed of Andrew Grant (author of Ethereal), Finn Eggers and Kim Kåhre (authors of Koivisto), Jay Honnold (author of Berserk), and Michael Whiteley and Dietrich Kappe (current authors of Dragon).[42] The former authors of Dragon, Mark Lefler and Larry Kaufman, are advisors on this project.[43] The development of Torch is supported by many open-source tools, including pytorch-nnue, Cutechess, and OpenBench.[42][43] Torch developers have stated that the entire source code of Torch is original, with no code being used from any other engine.[42][43]

Policy

Chess.com has a policy against the use of chess engines in all forms of the game, except where "specifically permitted (such as a computer tournament)".[51] It utilizes algorithms and statistical data to catch players using engines in games and bans many on a daily basis,[52] and employs six moderators to prevent cheating.[4]

News

Chess.com has a news section in which reporters post reports of major chess tournaments around the world as well as the results of major Chess.com tournaments such as the Speed Chess Championship.[53]

Additional features include chess forums, articles, downloads, opening databases, teams, live broadcasts,[54] online coaching and a game database with millions of games.[55]

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, Sam Shankland, Dan Heisman, Jeremy Silman, Simon Williams, Daniel Naroditsky, Natalia Pogonina and Daniel Rensch.[56]

Insights

Chess.com offers statistics based on all games played for premium members.[57]

Subsidiary companies

ChessKid.com

Chess.com runs the subsidiary site chesskid.com for chess players that are under the minimum age requirement for Chess.com.

ChessKid focuses on a child-friendly environment aimed towards chess improvement for beginners to club players. It has a guardianship program in which parents and authorized coaches can overlook the child's progress over time, to see statistics about their progress in tactics or how many videos they watched so that they can give encouragement and tips on how to improve.[58] ChessKid features no advertising.

ChessKid.com has run a yearly online championship called CONIC (the ChessKid Online National Invitational Championship), since 2012 which is recognized by the United States Chess Federation.[59][60] According to David Petty, the event organizer in 2013,

ChessKid has made agreements and partnerships with chess associations to bring the educational benefit of chess to children in schools. In 2014, for a trial period, all signups to the ICA (Illinois Chess Association) included a free gold member subscription to ChessKid.[58] They have a long-term partnership with the NTCA (North Texas Chess Academy) which gives children access to online instructors.[61]

Play Magnus Group

In August 2022, the Play Magnus Group accepted an offer to be acquired by Chess.com at a value of 800 million kr (US$80 million). The Play Magnus Group owns brands and businesses including the chess server chess24, the mobile app Play Magnus, the Champions Chess Tour, and the chess improvement website Chessable. On December 16, 2022, the acquisition was officially closed.[62][63] According to Dot Esports, the Play Magnus Group was unable to make a "sustainable profit" on anything but Chessable, and the merge left "no other realistic chess competitor" except the free, open-source Lichess.[64]

Tournaments and events

Speed Chess Championship

Chess.com has held the Speed Chess Championship annually since 2016, involving a single-elimination tournament featuring some of the world's best players. Nakamura has won five championships, while Carlsen has won three.[65]

Tournament formula

Due to the very interesting format of the competition, the tournament is very popular among chess fans. Every year, thousands of chess players watch the live broadcast. The most important elements of the tournament formula:[66]

  • 16-player single-elimination bracket
  • Matches consist of three segments: 90 minutes of 5+1, 60 minutes of 3+1, and 30 minutes of 1+1.
  • The player with the most cumulative points at the end of the match wins.
  • Games that start before the time for a segment runs out count toward the final score.
  • Players can resign from the match within the last 10 minutes of the 1+1 segment, with the player's win percentage being capped at 35%.
  • In case of equal number of points - tiebreaks:
    • A four-game 1+1 match.
    • A single bidding armageddon game with a base time of 5 minutes.

Winners of Speed Chess Championships

No Year Winner Runner-up Final score Prize fund
1 2016[67] Magnus Carlsen Hikaru Nakamura 14.5–10.5 $40,000
2 2017[68] Magnus Carlsen Hikaru Nakamura 18–9 $50,000
3 2018[69] Hikaru Nakamura Wesley So 15.5–12.5 $55,000
4 2019[70] Hikaru Nakamura Wesley So 19.5–14.5 $50,000
5 2020[71] Hikaru Nakamura Maxime Vachier-Lagrave 18.5–12.5 $100,000
6 2021[72] Hikaru Nakamura Wesley So 23–8 $100,000
7 2022[73] Hikaru Nakamura Magnus Carlsen 14.5–13.5 $100,000
8 2023[74] Magnus Carlsen Hikaru Nakamura 13.5–12.5 $150,000

Daily Chess Championship

Daily Chess Championship is one of the largest online chess tournament. It has been held annually on the chess.com platform since 2018. The competitions, due to their open formula, have attracted thousands of chess players from the very beginning, and this number grows every year. It was especially visible during the lockdown, when people turned to online chess to occupy their minds.[75] Another increase in popularity was when the hit series “The Queen’s Gambit” was released by Netflix.[76]
While the first edition of Daily Chess Championships had just over 7,000 players,[77] after 5 years, in 2023, due to the significant interest in the event, the organizer had to limit the number of participants to 35,000.[78] Due to this turnout success, the organizer decided that in 2024 there will be no limits on the number of participants. This allowed to set another record for the number of chess players in one tournament, which exceeded 60,000.[79]

Tournament formula

The tournament always starts on January 1 and, depending on the number of participants, consists of 4 or 5 rounds.[lower-alpha 1] All players are divided into groups (up to 12 people [lower-alpha 2]), and only the winners advance to the next round. [lower-alpha 3] Players play in each round a maximum of 22 games simultaneously (with each opponent as White and Black), with a maximum of one day allocated for each move. So it can be considered a form of correspondence chess. The winner of the Championship is the player who accumulates the most points in the final round.

Winners of Daily Chess Championships

No Year Gold Silver Bronze Number of players
1 2018[80] Jbd735  USA Rob King  RUS Alexey Zimin 7344
2 2019[81]  GER Sascha Grimm Jbd735  NED Daan Brandenburg 11609
3 2020[82]  DEN Uffe Vinther-Schou  RUS Andrei Belozerov  TUR Irmak Sipahioglu 16831
4 2021[83]  DEN Uffe Vinther-Schou  RUS Andrei Belozerov  UKR Leonid Starozhilov
 POL Marcin Szymański 		16505
5 2022[84]  USA NefariousNebula  RUS Andrei Belozerov  USA volunteers1998 33633
6 2023[85]  POL Marcin Szymański  RUS DanilinDP  POL Kacper Drozdowski 35000
7 2024[86] ? ? ? 60466
Italic font - only usernames available on the chess.com platform.

US Chess League

The USCL was a nationwide national chess league in the United States between 2005 and 2016. Chess.com hosted the event in 2013.[87]

PRO Chess League

The PRO Chess League was the result of the US Chess League changing its name and format, with faster time controls and a focus on the flexibility of forming and managing teams.[88] Chess.com has hosted the PCL starting in 2017, having a regular and a summer series.[89]

Winners of PRO Chess League

No Year Winner Runner-up Final score
1 2017[90] St. Louis Arch Bishops Norway Gnomes 9–7
2 2018[91] Armenia Eagles Chengdu Pandas 12–11
3 2019[92] St. Louis Arch Bishops Baden-Baden Snowballs 10–6
4 2020[93] St. Louis Arch Bishops Canada Chessbrahs/Chengde Panda 9.5-6.5
5 2021[94] Russia Wizards St. Louis Arch Bishops 9–7
6 2023[95] Gotham Knights Shanghai Tigers 9.5-6.5

Titled Tuesdays

Titled Tuesday is an 11-round Swiss-system 3+1 blitz chess tournament held every Tuesday.[96] Grandmaster participants include Hikaru Nakamura, Magnus Carlsen, Maxime Vachier-Lagrave, Alexander Grischuk, Dmitry Andreikin, Alireza Firouzja, Daniel Naroditsky, Wesley So, and Fabiano Caruana.[96] The first event was held on October 28, 2014, with a prize fund of $500 and was won by Baadur Jobava.[97] The prize fund was gradually upgraded to $5000 per week.[98] As of February 2023, GM Hikaru Nakamura has won a total of 62 tournament wins since October 2020 (becoming the first player to have ever achieved that milestone), followed by GM Dmitry Andreikin with 16,[99] Magnus Carlsen has won three of the events in which he has partaken as of 2017.[100]

In June 2018, Chess.com held a special version of the tournament for which the winner would go on to participate in the Isle of Man International which had a prize fund of £144,000.[101] Iranian GM Pouria Darini won the event.[102]

Death Matches

Death Matches were introduced in January 2012. They feature titled players taking part in 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).[103] There have been 38 deathmatches, participants including the grandmasters Hikaru Nakamura, Dmitry Andreikin, Maxime Vachier-Lagrave, Lê Quang Liêm, Wesley So, Fabiano Caruana, Judit Polgár and Nigel Short.[104]

Chess.com Computer Chess Championship

In November 2017, Chess.com held an open tournament, called the Chess.com Computer Chess Championship (CCCC, later CCC), with the ten strongest chess engines, with $2,500 in prize money. The top-two engines competed in a "Superfinale" 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.[105][106]

In August 2018, the site announced that the Chess.com Computer Chess Championship has returned, this time as a non-stop tournament for chess engines.[107][108]

Main events
Event Year Time controls Winner Runner-up Ref
Computer Chess Championship 2017 15+2 Stockfish (1) Houdini [106][105]
CCC 1: Rapid Rumble 2018 15+5 Stockfish (2) Houdini [109]
CCC 2: Blitz Battle 2018 5+2 Stockfish (3) Komodo [110]
CCC 3: Rapid Redux 2019 30+5 Stockfish (4) Leela Chess Zero [111]
CCC 4: Bullet Brawl 2019 1+2 Stockfish (5) Leela Chess Zero [112]
CCC 5: Escalation 2019 10+5 Stockfish (6) Leela Chess Zero [113]
CCC 6: Winter Classic 2019 10+10 Stockfish (7) Leela Chess Zero [114]
CCC 7: Blitz Bonanza 2019 5+2 Leela Chess Zero (1) Stockfish [115]
CCC 8: Deep Dive 2019 15+5 Stockfish (8) Leela Chess Zero [116]
CCC 9: The Gauntlet 2019 5+2, 10+5 Stockfish (9) Leelenstein [117]
CCC 10: Double Digits 2019 10+3 Leelenstein (1) Stockfish [118]
CCC 11 2019 30+5 Leela Chess Zero (2) Stockfish [119]
CCC 12: Bullet Madness! 2020 1+1 Leela Chess Zero (3) Leelenstein [120]
CCC 13: Heptagonal 2020 5+5 Leela Chess Zero (4) Stockfish [121]
CCC 14 2020 15+5, 5+2, 1+1 Leela Chess Zero (5) Leelenstein [122]
CCC Blitz 2020 2020 5+5 Stockfish (10) Leela Chess Zero [123]
CCC Rapid 2021 2021 15+3 Stockfish (11) Leela Chess Zero [124]
CCC Blitz 2021 2021 5+5 Stockfish (12) Leela Chess Zero [125]
CCC Chess 960 Blitz 2021 5+5 Stockfish (13) Dragon [126]
CCC 16: Rapid 2021 15+3 Stockfish (14) Leela Chess Zero [127]
CCC 16: Bullet 2021 2+1 Stockfish (15) Dragon [128]
CCC 16: Blitz 2022 5+5 Stockfish (16) Dragon [129]
CCC 17: Rapid 2022 15+3 Stockfish (17) Dragon [130]
CCC 17: Bullet 2022 2+1 Stockfish (18) Dragon [131]
CCC 17: Blitz 2022 5+5 Stockfish (19) Leela Chess Zero [132]
CCC 18: Rapid 2022 15+3 Stockfish (20) Leela Chess Zero [133]
CCC 19: Blitz 2022 5+5 Stockfish (21) Dragon [134]
CCC 19: Rapid 2022 15+3 Stockfish (22) Leela Chess Zero [135]
CCC 19: Bullet 2023 1+1 Stockfish (23) Dragon [136]
CCC 20: Blitz 2023 3+2 Stockfish (24) Dragon [137]
CCC 20: Rapid 2023 10+3 Stockfish (25) Leela Chess Zero [138]
CCC 20: Bullet 2023 1+1 Stockfish (26) Torch [139]
CCC 21: Blitz 2023 3+2 Stockfish (27) Torch [140]
CCC 21: Rapid 2023 10+3 Stockfish (28) Leela Chess Zero [141]
CCC 21: Bullet 2023 1+1 Stockfish (29) Torch [46]
Bonus
Event Year Time Controls Winner Runner-up Ref
CPU Blitz Madness 2020 3+2 Stockfish an older version of Stockfish [142]
Trillion-Node Throwdown III 2020 150+5 Stockfish Leela Chess Zero on the CPU [143]
No-Castle II 2020 5+2 Stockfish an older version of Stockfish [144]
Bullet Chess is Fun 2020 2+1 Stockfish Leela Chess Zero [145]
Checkmate in 4 2020 3+2 Stockfish Leela Chess Zero [146]
Odds Ladder 2020 3+2 Stockfish Leela Chess Zero [147]
Merry Queen Sac 2020 2+1 Stockfish Stoofvlees [148]
Budapest Bullet 2020 2+1 Leela Chess Zero Stockfish [149]
King Gambit Madness 2021 5+5 Stockfish Leela Chess Zero [150]
Drawkiller Update Party 2021 2+1 Stockfish Leela Chess Zero [151]
To Castle Or Not To Castle II 2021 3+2 Stockfish Leela Chess Zero [152]
Eco Mega-Match 2 (part 1) 2021 1+1 Stockfish Leela Chess Zero [153]
Eco Mega-Match 2 (part 2) 2021 1+1 Stockfish Leela Chess Zero [154]
Caro-Kann Special 2021 5+2 Stockfish Leela Chess Zero [155]
King's Indian Defense Special 2021 10+2 Leela Chess Zero Stockfish [156]
Dutch Defense Special 2021 10+2 Stockfish Leela Chess Zero [157]
Evans Gambit Madness 2021 10+2 Leela Chess Zero Stockfish [158]
Sicilian Najdorf Special 2021 10+2 Stockfish Dragon [159]
Belgian Stew 2021 2+1 Stockfish Leela Chess Zero [160]
Saragossa 2021 2+1 Leela Chess Zero Stockfish [161]
Double Bongcloud, Rapid 2021 10+2 Leela Chess Zero Stockfish [162]
The Hillbilly Attack 2021 10+2 Leela Chess Zero Dragon [163]
Romantic Openings: Danish Gambit Accepted 2021 3+2 Stockfish Dragon [164]
Romantic Openings: Evans Gambit Accepted 2021 3+2 Stockfish Leela Chess Zero [165]
Romantic Openings: Urusov Gambit Accepted 2021 5+2 Stockfish Dragon [166]
Romantic Openings: Blackmar-Diemer Gambit 2021 5+2 Stockfish Dragon [167]
Romantic Openings: Stafford Gambit 2021 1+2 Leela Chess Zero Stockfish [168]
Romantic Openings: Calabrese Countergambit 2021 5+2 Stockfish Leela Chess Zero [169]
Romantic Openings: Traxler Counterattack 2021 5+2 Leela Chess Zero Stockfish [170]
No Black Castling 2022 5+5 Stockfish Dragon [171]
Draw Killer 2022 15+5 Stockfish Leela Chess Zero [172]
Romantic Openings: Wing Gambit 2022 5+2 Stockfish Leela Chess Zero [173]
Chess 324 Bonus 2022 5+2 Stockfish Dragon [174]
Classical Cup #1 2023 30+5 Stockfish Leela Chess Zero [175]
Rating Brawl: Fall 2023 2023 1+1 Stockfish Torch [176]

PogChamps

Chess.com has hosted PogChamps, an amateur online tournament featuring Twitch streamers, since 2020. The first PogChamps featured streamers including xQcOW, MoistCr1TiKaL, Ludwig Ahgren, and forsen. New participants from PogChamps 2 included itsHafu and Hafþór Júlíus Björnsson.[177] PogChamps 3, beginning in February 2021, debuted with a wider range of Internet personalities and celebrities, with new competitors including MrBeast, Neekolul, Myth, Pokimane, actor Rainn Wilson, and rapper Logic.[178]

See also

Notes

  1. ↑ Since 2020, due to the steadily growing number of players, a 5-round format is necessary.
  2. ↑ If the number of all players in a given round is not divisible by 12, smaller groups are created. In case all groups cannot be of the same size, players with the highest rankings go to smaller groups.
  3. ↑ In case of equal points, all winners in the group advance.

References

  1. ↑ "About Chess.com". https://www.chess.com/about. 
  2. ↑ "Chess.com chooses Azul Zing to enhance real-time gaming experience". Marketwired. April 26, 2016. http://www.marketwired.com/press-release/chesscom-chooses-azul-zing-to-enhance-real-time-gaming-experience-2118463.htm. 
  3. ↑ 3.0 3.1 "Chess.com: A Social Networking Site For...Well You Can Probably Guess" (in en-US). 2007-07-08. https://techcrunch.com/2007/07/08/chesscom-a-social-networking-site-forwell-you-can-probably-guess/. 
  4. ↑ 4.0 4.1 Waldstein, David (2020-03-15). "Think Cheating in Baseball Is Bad? Try Chess". https://www.nytimes.com/2020/03/15/sports/chess-cheating.html. 
  5. ↑ "Chess Mentor by Aficionado". http://www.chess.com/home.html. 
  6. ↑ Tomco, Brigham (2023-01-31). "How two BYU grads launched the world's most popular chess website" (in en). https://www.deseret.com/2023/1/30/23578327/how-two-byu-grads-launched-the-worlds-most-popular-chess-website. 
  7. ↑ "Chesspark And Chess.com Put Their Pawns Together" (in en-US). 2009-12-22. https://techcrunch.com/2009/12/22/chesspark-chess-com-merger/. 
  8. ↑ "Chess.com to Acquire ChessVibes". 2013-10-03. http://www.blackandwhiteindia.com/2013/10/chesscom-to-acquire-chessvibes.html. 
  9. ↑ Peter Doggers (October 3, 2013). "Breaking: Chess.com to acquire ChessVibes". http://www.chessvibes.com/?q=breaking-chesscom-to-acquire-chessvibes. 
  10. ↑ Mike Klein (October 3, 2013). "Chess.com to Acquire ChessVibes". USCF. http://www.uschess.org/content/view/12379/319/. 
  11. ↑ Cilento, Pete (2014-12-15). "Chess.com: 1 Billion Games Served". http://www.chess.com/article/view/chesscom-1-billion-games-served. 
  12. ↑ 12.0 12.1 "Introducing The New Chess.com (Version 3)". 2016-01-26. https://www.chess.com/article/view/introducing-chess-com-version-3. 
  13. ↑ Angelica Cabral (June 15, 2017). "Chess.com App Crashes on Older Apple Devices After People Played One Game Too Many". Slate. ISSN 1091-2339. http://www.slate.com/blogs/future_tense/2017/06/15/chess_com_app_crashes_on_older_apple_devices_after_people_played_one_game.html?via=gdpr-consent. Retrieved September 5, 2018. 
  14. ↑ Collins, Keith (2017-06-14). "A popular chess app inadvertently broke the mathematical limits of older Apple devices". https://qz.com/1005230/chess-coms-ios-app-inadvertently-broke-the-mathematical-limits-of-older-apple-devices/. 
  15. ↑ "Chess.com Acquires Komodo; Launches New 'Monte Carlo' Version Similar To AlphaZero". May 24, 2018. https://www.chess.com/news/view/chess-com-acquires-komodo-launches-new-monte-carlo-version-similar-to-alphazero. 
  16. ↑ "Komodo 12 with AlphaZero techniques". May 28, 2018. https://en.chessbase.com/post/komodo-12-with-alphazero-techniques. 
  17. ↑ RS, Prasad (November 18, 2020). "Chess.com acquires broadcast rights for 2021 FIDE World Championship" (in en). https://timesofindia.indiatimes.com/sports/chess/chess-com-acquires-broadcast-rights-for-2021-fide-world-championship/articleshow/79275204.cms. 
  18. ↑ "Russia blocks chess website over Ukraine". April 24, 2022. https://www.france24.com/en/live-news/20220424-russia-blocks-chess-website-over-ukraine. 
  19. ↑ "Роскомнадзор заблокировал самый популярный шахматный сайт chess.com — там заменяли флаг России на статью об Украине". April 24, 2022. https://tjournal.ru/news/600988-roskomnadzor-zablokiroval-samyy-populyarnyy-shahmatnyy-sayt-chess-com-tam-zamenyali-flag-rossii-na-statyu-ob-ukraine. 
  20. ↑ Пастух, Юлия (April 17, 2022). "Сергей Карякин призвал РКН заблокировать шахматный сайт chess.com". https://www.oblgazeta.ru/society/134720/. 
  21. ↑ "On The Invasion Of Ukraine". February 27, 2022. https://www.chess.com/article/view/on-the-invasion-of-ukraine. 
  22. ↑ Hallam, Mark (September 27, 2022). "Chess: Carlsen expands on 'cheating' suspicions". https://www.dw.com/en/chess-carlsen-expands-on-cheating-suspicions-against-niemann/a-63247686. 
  23. ↑ Chappell, Bill (September 21, 2022). "The cheating scandal roiling the chess world has a new wrinkle". https://www.npr.org/2022/09/21/1124082877/chess-cheating-scandal-niemann-carlsen. 
  24. ↑ Koebler, Jason (September 28, 2022). "Chess Grandmaster Maxim Dlugy Admitted to Cheating on Chess.com, Emails Show". https://www.vice.com/en/article/z34qz8/chess-grandmaster-maxim-dlugy-admitted-to-cheating-on-chesscom-emails-show. 
  25. ↑ Morse, Ben (June 28, 2023). "Judge dismisses Hans Niemann's $100 million lawsuit against Magnus Carlsen, among others, in chess cheating scandal". https://www.cnn.com/2023/06/28/sport/judge-dismisses-niemann-lawsuit-carlsen-chess-spt-intl/index.html. 
  26. ↑ "Chess.com Global Championship 2022: All The Information" (in en-US). April 27, 2022. https://www.chess.com/article/view/chesscom-global-championship-2022. 
  27. ↑ West, Vanessa (November 7, 2022). "Wesley So Becomes First-Ever Chess.com Global Champion" (in en-US). https://www.chess.com/news/view/2022-chesscom-global-championship-final-d2. 
  28. ↑ "Chess.com Reaches 100 Million Members" (in en-US). 2022-12-16. https://www.chess.com/article/view/chesscom-reaches-100-million-members. 
  29. ↑ "Cat Bots: The Purrfect Way To Start The Year" (in en-US). December 31, 2022. https://www.chess.com/news/view/chesscom-announces-cat-bots. 
  30. ↑ "Battle Against The A.I. Bots!" (in en-US). February 1, 2023. https://www.chess.com/news/view/chesscom-ai-bots. 
  31. ↑ Kayzee, Sarah (January 25, 2023). "Chess.com crashes as it hits highest-ever daily active users" (in en-US). https://esports.gg/news/chess/chess-com-crashes-as-it-hits-the-highest-ever-daily-active-users/. 
  32. ↑ "Improve Your Chess with a Premium Membership" (in en-US). https://www.chess.com/membership. 
  33. ↑ "Mittens - The Chess-Playing Cat That Conquered the Internet!" (in en-US). February 23, 2023. https://www.chess.com/terms/mittens-chess. 
  34. ↑ "Chess Puzzles - Improve Your Chess by Solving Tactics" (in en-US). https://www.chess.com/puzzles/rated. 
  35. ↑ 35.0 35.1 "Puzzle Rush - Compete to Solve Chess Puzzles" (in en-US). https://www.chess.com/puzzles/rush. 
  36. ↑ 36.0 36.1 36.2 "FEATURE: New Puzzle Rush Formats Released" (in en-US). 2019-08-20. https://www.chess.com/news/view/feature-new-puzzle-rush-formats-released. 
  37. ↑ "Puzzle Battle - Compete with your Chess Friends" (in en-US). https://www.chess.com/puzzles/battle. 
  38. ↑ "Daily Chess Puzzles - Your Daily Chess Challenge" (in en-US). https://www.chess.com/daily-chess-puzzle. 
  39. ↑ 39.0 39.1 "How can I play against the Chess.com computer?" (in en-US). https://support.chess.com/article/694-how-can-i-play-against-the-chess-com-computer. 
  40. ↑ "Chess Lessons - Learn with Online Courses" (in en-US). https://www.chess.com/lessons. 
  41. ↑ "How do Lessons Work?" (in en-US). https://support.chess.com/article/284-how-do-lessons-work. 
  42. ↑ 42.0 42.1 42.2 42.3 42.4 Kelemen, Luci (14 July 2023). "Chess.com announces new super-strong chess engine to challenge Stockfish". https://dotesports.com/chess/news/chess-com-announces-new-super-strong-chess-engine-to-challenge-stockfish. 
  43. ↑ 43.0 43.1 43.2 43.3 43.4 "Announcing Torch: New #2 Chess Engine" (in en-US). 2023-07-13. https://www.chess.com/news/view/torch-chess-engine. 
  44. ↑ "CCC: Torch vs Stockfish - Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc20-bullet-finals. 
  45. ↑ "CCC: Torch vs Stockfish - Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc21-blitz-finals. 
  46. ↑ 46.0 46.1 "CCC: Torch vs Stockfish - Computer Chess Championship" (in en-US). https://www.chess.com/computer-chess-championship#event=ccc21-bullet-finals. 
  47. ↑ "CCC: Mystery vs Dragon - Computer Chess Championship" (in en-US). https://www.chess.com/computer-chess-championship#event=ccc20-bullet-finals. 
  48. ↑ "Enlighten Your Analysis With Torch, The New Top Engine Now Available On Chess.com" (in en-US). 2023-10-18. https://www.chess.com/news/view/torch-engine-available-on-chesscom. 
  49. ↑ Pohl, Stefan. "Stefan Pohl Computer Chess". https://www.sp-cc.de/. 
  50. ↑ "CCRL Blitz - Index". https://ccrl.chessdom.com/ccrl/404/. 
  51. ↑ "What are the site's policies?". https://support.chess.com/customer/portal/articles/1444772. 
  52. ↑ Rensch, Daniel (June 3, 2015). "Cheating On Chess.com". https://www.chess.com/blog/DanielRensch/cheating-on-chesscom. 
  53. ↑ "Chess News and Event Coverage" (in en-US). https://www.chess.com/news. 
  54. ↑ "Chess.com, red social para los jugadores de ajedrez" (in es). July 8, 2007. https://www.genbeta.com/web/chesscom-red-social-para-los-jugadores-de-ajedrez. 
  55. ↑ "Chess Database with Master Chess Games" (in en-US). https://www.chess.com/games. 
  56. ↑ "Chess Video Authors". https://www.chess.com/videos/authors. 
  57. ↑ "Chess Insights - Understand and Improve Your Game" (in en-US). https://www.chess.com/insights. 
  58. ↑ 58.0 58.1 "ICA Offers Free ChessKid Gold Upgrade to K-12 Members". http://www.il-chess.org/youthnews/700-chess-kid-membership-offer. 
  59. ↑ Pruess, David (May 31, 2012). "Nation's Top Chess Kids to Battle in Online Invitational". http://www.uschess.org/content/view/11761/319/. 
  60. ↑ Jordan, Robert (June 15, 2013). "Bay Area kids look to checkmate opponents from a computer screen". Contra Costa Times. http://www.contracostatimes.com/ci_23470145/chess-bay-area-kids-look-checkmate-opponents-from. 
  61. ↑ "ChessKid Gold Membership". https://www.northtexaschessacademy.com/product-page/chesskid-com-gold-membership. 
  62. ↑ Marita, Lene (August 24, 2022). "Chess vil by 13 kroner aksjen for hele Play Magnus Group" (in no). Dagens Næringsliv. https://www.dn.no/marked/chess-vil-by-13-kroner-aksjen-for-hele-play-magnus-group/2-1-1284026. Retrieved August 26, 2022. 
  63. ↑ "Chess.com Officially Acquires Play Magnus, Carlsen Signs As Ambassador". December 21, 2021. https://www.chess.com/news/view/chesscom-acquires-pmg. 
  64. ↑ Kelemen, Luci (August 24, 2022). "Chess.com to acquire Play Magnus Group". Dot Esports. https://dotesports.com/chess/news/chess-com-to-acquire-play-magnus-group. Retrieved August 26, 2022. 
  65. ↑ Mark Crowther (October 27, 2016). "Carlsen-Nakamura chess.com GM Blitz Battle Final 2016". http://theweekinchess.com/chessnews/events/carlsen-nakamura-chess.com-gm-blitz-battle-final-2016. 
  66. ↑ "Speed Chess Championship 2023". chess.com. https://www.chess.com/events/info/2023-speed-chess-championship. Retrieved 2024-01-06. 
  67. ↑ Mike Klein (July 1, 2016). "GM Blitz Battle Historical Archive". Chess.com. https://www.chess.com/article/view/gm-blitz-battle-historical-archive. 
  68. ↑ Pete Cilento (May 2, 2017). "2017 Speed Chess Championship Schedule, Results, Information". Chess.com. https://www.chess.com/article/view/2017-speed-chess-championship-information. 
  69. ↑ "Speed Chess Championship 2018 – Official Information". Chess.com. August 18, 2018. https://www.chess.com/article/view/2018-speed-chess-championship-official-schedule-players-prizes-information. 
  70. ↑ "Nakamura Defeats So To Repeat As Speed Chess Champion". Chess.com. April 20, 2018. https://www.chess.com/article/view/2019-speed-chess-championship. 
  71. ↑ "Nakamura Wins 2020 Speed Chess Championship Final Presented By OnJuno". Chess.com. December 15, 2020. https://www.chess.com/news/view/nakamura-wins-2020-speed-chess-championship. 
  72. ↑ (Samcopeland), Sam Copeland (December 19, 2021). "Nakamura Wins 2021 Speed Chess Championship Final With Double-Digit Dominance". Chess.com. https://www.chess.com/news/view/nakamura-wins-speed-chess-championship-final-with-double-digit-dominance. 
  73. ↑ "2022 Speed Chess Championship Main Event". https://www.chess.com/events/2022-speed-chess-championship-main-event. 
  74. ↑ "Speed Chess Championship 2023". https://www.chess.com/events/info/2023-speed-chess-championship. 
  75. ↑ "Chess is Booming". The New York Times. 2022-06-16. https://www.nytimes.com/2022/06/17/crosswords/chess/chess-is-booming.html. Retrieved 2023-12-10. 
  76. ↑ "'The Queen's Gambit' is sparking a surge of interest in chess". cnn.com. 2020-12-06. https://edition.cnn.com/2020/12/06/us/queens-gambit-chess-popularity-trnd/index.html. Retrieved 2023-12-10. 
  77. ↑ "Daily Chess Championship 2018". chess.com. 2018-09-04. https://www.chess.com/tournament/2018-chess-com-daily-chess-championship. Retrieved 2023-11-15. 
  78. ↑ "Daily Chess Championship 2023". chess.com. 2023-10-20. https://www.chess.com/tournament/2023-chess-com-daily-chess-championship. Retrieved 2023-11-15. 
  79. ↑ "Daily Chess Championship 2024". chess.com. https://www.chess.com/tournament/2024-chess-com-daily-chess-championship. Retrieved 2023-12-10. 
  80. ↑ "2018 Chess.com Daily Chess Championship". chess.com. 2018-09-04. https://www.chess.com/tournament/2018-chess-com-daily-chess-championship/players. Retrieved 2023-11-15. 
  81. ↑ "2019 Chess.com Daily Chess Championship". chess.com. 2019-11-22. https://www.chess.com/tournament/2019-chess-com-daily-chess-championship/players. Retrieved 2023-11-15. 
  82. ↑ "2020 Chess.com Daily Chess Championship". chess.com. 2020-10-13. https://www.chess.com/tournament/2020-chess-com-daily-chess-championship/players. Retrieved 2023-11-15. 
  83. ↑ "2021 Chess.com Daily Chess Championship". chess.com. 2022-01-09. https://www.chess.com/tournament/2021-chess-com-daily-chess-championship/players. Retrieved 2023-11-15. 
  84. ↑ "2022 Chess.com Daily Chess Championship". chess.com. 2022-10-11. https://www.chess.com/tournament/2022-chess-com-daily-chess-championship/players. Retrieved 2023-11-15. 
  85. ↑ "2023 Chess.com Daily Chess Championship". chess.com. 2023-10-20. https://www.chess.com/tournament/2023-chess-com-daily-chess-championship/players. Retrieved 2023-11-15. 
  86. ↑ "2024 Chess.com Daily Chess Championship". chess.com. 2023-12-10. https://www.chess.com/tournament/2024-chess-com-daily-chess-championship/players. Retrieved 2023-12-10. 
  87. ↑ Klein, Mike (August 5, 2013). "Chess.com to Host 2013 US Chess League". https://www.chess.com/news/view/chesscom-to-host-all-2013-uscl-action-5107. 
  88. ↑ Doggers, Peter (August 25, 2016). "U.S. Chess League Becomes PRO Chess League". Chess.com. https://www.chess.com/news/view/u-s-chess-league-becomes-pro-chess-league-5789. 
  89. ↑ Steincamp, Isaac (May 22, 2019). "PRO Chess League Summer Series: 16 Teams, 16 Stories". Chess.com. https://www.chess.com/news/view/pro-chess-league-summer-series-16-teams-16-stories. 
  90. ↑ Mike Klein (March 26, 2017). "St. Louis Arch Bishops Win Inaugural PRO League Title". Chess.com. https://www.chess.com/news/view/saint-louis-arch-bishops-win-inaugural-pro-league-title-7360. 
  91. ↑ Devanshi Rathi (April 11, 2018). "The PRO Chess League Finals: The biggest event in Chess e-sports history". https://www.sportskeeda.com/chess/the-pro-chess-league-finals-the-biggest-event-in-chess-e-sports-history. 
  92. ↑ Mike Klein (May 8, 2019). "Arch Bishops Capture 2nd PRO Chess League Title". Chess.com. https://www.chess.com/news/view/saint-louis-arch-bishops-win-2019-pro-chess-league. 
  93. ↑ Peter Doggers (Oct 2, 2020). "Saint Louis Arch Bishops Win 2020 PRO Chess League". Chess.com. https://www.chess.com/news/view/arch-bishops-win-2020-pro-chess-league. 
  94. ↑ Yuriy Krykun (Nov 3, 2021). "PRO Chess League Finals: Russia Wizards Win". Chess.com. https://www.chess.com/news/view/2021-pro-chess-league-finals. 
  95. ↑ Venkatachalam Saravanan (May 17, 2023). "Gotham Knights Beat Shanghai Tigers To Win 2023 Title, Yogis Finish 3rd". Chess.com. https://www.chess.com/news/view/2023-pcl-finals-gotham-knights-win. 
  96. ↑ 96.0 96.1 Lee, John (February 8, 2017). "Safarli Wins Chess.com 'Titled Tuesday' for February". https://hotoffthechess.com/safarli-wins-chess-com-titled-tuesday-for-february/. 
  97. ↑ Klein, Mike (October 28, 2014). "Jobava Stays Up Late, Routs Chess.com's First Titled Tuesday". https://www.chess.com/news/view/jobava-stays-up-late-routs-chesscoms-first-titled-player-tuesday-6127. 
  98. ↑ "Titled Tuesday: All The Information". September 21, 2022. https://www.chess.com/article/view/titled-tuesday. 
  99. ↑ "Titled Tuesday: All The Information" (in en-US). 2024-01-10. https://www.chess.com/article/view/titled-tuesday. 
  100. ↑ Monokroussos, Dennis (November 15, 2017). "Carlsen Wins November's "Titled Tuesday"". http://www.thechessmind.net/blog/2017/11/15/carlsen-wins-novembers-titled-tuesday.html. 
  101. ↑ "Announcement of the 2018 Chess.com Isle of Man International". May 25, 2018. http://iominternationalchess.com/news-media/news/208-win-earn-an-expenses-paid-spot-in-the-chess-com-isle-of-man-international.html. 
  102. ↑ Copeland, Sam (June 9, 2018). "Iranians Darini, Hejazipour Win IoM Trips In Titled Tuesday". https://www.chess.com/news/view/iranians-darini-hejazipour-win-iom-trips-in-titled-tuesday-3288. 
  103. ↑ "Death-match Historical Archive". May 17, 2012. http://www.chess.com/article/view/death-match-historical-archive. 
  104. ↑ Klein, Mike (May 30, 2013). "Death Match 15: Caruana vs. Aveskulov". http://www.uschess.org/content/view/12225/709. 
  105. ↑ 105.0 105.1 Cilento, Pete (November 18, 2018). "Chess.com Announces Computer Chess Championship [Updated With Results"]. https://www.chess.com/article/view/chess-com-announces-computer-chess-championship. 
  106. ↑ 106.0 106.1 Cilento, Pete (November 18, 2017). "Stockfish Wins Chess.com Computer Championship". https://www.chess.com/news/view/stockfish-wins-chess-com-computer-championship. 
  107. ↑ Cliento, Pete (November 21, 2018). "Live Now: The New Computer Chess Championship" (in en-US). https://www.chess.com/news/view/announcing-the-new-computer-chess-championship. 
  108. ↑ Cliento, Pete (September 11, 2018). "Machine-Learning Lc0 Joins 'Big 3' Engines Atop Computer Chess Championship At Half" (in en-US). https://www.chess.com/news/view/machine-learning-lc0-joins-big-3-engines-atop-computer-chess-championship-half. 
  109. ↑ Cilento, Pete (October 4, 2018). "Stockfish Wins Computer Chess Championship Rapid; Lc0 Finishes 3rd" (in en-US). https://www.chess.com/news/view/stockfish-wins-computer-chess-championship-rapid-lc0-finishes-3rd-3887. 
  110. ↑ Cilento, Pete (November 20, 2018). "Stockfish Wins Computer Chess Championship Blitz" (in en-US). https://www.chess.com/news/view/stockfish-wins-computer-chess-championship-blitz. 
  111. ↑ Cilento, Pete. "Stockfish Wins Rapid Computer Championship Over Lc0; Bullet Chess Next" (in en-US). https://www.chess.com/news/view/stockfish-wins-rapid-computer-championship-over-lc0-bullet-chess-next. 
  112. ↑ Cilento, Pete (January 31, 2019). "Stockfish Wins Computer Chess Championship Bullet; 'Escalation' Next" (in en-US). https://www.chess.com/news/view/stockfish-wins-computer-chess-championship-bullet-escalation-next. 
  113. ↑ https://cccfiles.chess.com/archive/tournament-18208.pgn [bare URL]
  114. ↑ Cilento, Pete. "Computer Chess Championship Plays Blitz After Stockfish Defends Title" (in en-US). https://www.chess.com/news/view/computer-chess-championship-playing-blitz-after-stockfish-defends-title. 
  115. ↑ Cilento, Pete (April 17, 2019). "Lc0 Wins Computer Chess Championship, Makes History". https://www.chess.com/news/view/lc0-wins-computer-chess-championship-makes-history. 
  116. ↑ Pete (pete) (May 24, 2019). "Stockfish Strikes Back, Tops Lc0 In Computer Chess Championship" (in en-US). https://www.chess.com/news/view/computer-chess-championship-9-stockfish-lc0. 
  117. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-9-the-gauntlet-final. 
  118. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc10-finals. 
  119. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc11-finals. 
  120. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc1218-scorpio-vs-stockfish-thirdplace-match. 
  121. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc13-finals. 
  122. ↑ "CCC 14". https://www.chess.com/computer-chess-championship#event=ccc1429-stockfish-vs-lc0-tiebreak. 
  123. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-blitz-championship-2020-finals. 
  124. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-rapid-2021-finals. 
  125. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-blitz-championship-2021-finals. 
  126. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-chess-960-blitz-championship-finals. 
  127. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-16-rapid-finals. 
  128. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-16-bullet-finals. 
  129. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-16-blitz-finals. 
  130. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-17-rapid-finals. 
  131. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-17-bullet-finals. 
  132. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-17-blitz-finals. 
  133. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-18-rapid-finals. 
  134. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-19-blitz-finals. 
  135. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-19-rapid-finals. 
  136. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-19-bullet-finals. 
  137. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-20-blitz-finals. 
  138. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc-20-rapid-finals. 
  139. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc20-bullet-finals. 
  140. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=ccc21-blitz-finals. 
  141. ↑ "Computer Chess Championship 21: Rapid Finals". https://www.chess.com/computer-chess-championship#event=ccc21-rapid-finals. 
  142. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=cpu-blitz-madness. 
  143. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=trillionnode-throwdown-iii. 
  144. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=nocastle-ii. 
  145. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=bullet-chess-is-fun. 
  146. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=checkmate-in-4. 
  147. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=odds-ladder. 
  148. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=merry-queen-sac. 
  149. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=budapest-bullet. 
  150. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=king-gambit-madness. 
  151. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=drawkiller-update-party. 
  152. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=to-castle-or-not-to-castle-ii. 
  153. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=eco-megamatch-2-part-1. 
  154. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=eco-megamatch-2-part-2. 
  155. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=carokann-special. 
  156. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=kings-indian-defense-special. 
  157. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=dutch-defense-special. 
  158. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=evans-gambit-madness. 
  159. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=sicilian-najdorf-special. 
  160. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=belgian-stew. 
  161. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=saragossa. 
  162. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=double-bongcloud-rapid. 
  163. ↑ "Computer Chess Championship". https://www.chess.com/computer-chess-championship#event=the-hillbilly-attack. 
  164. ↑ "Romantic Openings: Danish Gambit Accepted". https://www.chess.com/computer-chess-championship#event=romantic-openings-danish-gambit-accepted. 
  165. ↑ "Romantic Openings: Evans Gambit Accepted". https://www.chess.com/computer-chess-championship#event=romantic-openings-evans-gambit-accepted. 
  166. ↑ "Romantic Openings: Urusov Gambit Accepted". https://www.chess.com/computer-chess-championship#event=romantic-openings-urusov-gambit-accepted. 
  167. ↑ "Romantic Openings: Blackmar-Diemer Gambit". https://www.chess.com/computer-chess-championship#event=romantic-openings-blackmardiemer-gambit. 
  168. ↑ "Romantic Openings: Stafford Gambit". https://www.chess.com/computer-chess-championship#event=romantic-openings-stafford-gambit. 
  169. ↑ "Romantic Openings: Calabrese Countergambit". https://www.chess.com/computer-chess-championship#event=romantic-openings-calabrese-countergambit. 
  170. ↑ "Romantic Openings: Traxler Counterattack". https://www.chess.com/computer-chess-championship#event=romantic-openings-traxler-counterattack. 
  171. ↑ "No Black Castling Bonus". https://www.chess.com/computer-chess-championship#event=no-black-castling-bonus. 
  172. ↑ "Draw Killer Bonus". https://www.chess.com/computer-chess-championship#event=draw-killer-bonus. 
  173. ↑ "Romantic Openings: Wing Gambit". https://www.chess.com/computer-chess-championship#event=romantic-openings-wing-gambit. 
  174. ↑ "Computer Chess Championship Chess 324 Bonus" (in en-US). https://www.chess.com/computer-chess-championship#event=chess-324-bonus. 
  175. ↑ "Computer Chess Championship Classical Cup 1 Final" (in en-US). https://www.chess.com/computer-chess-championship#event=classical-cup-1-match-15. 
  176. ↑ "Computer Chess Championship - Rating Brawl : Fall 2023" (in en-US). https://www.chess.com/computer-chess-championship#event=rating-brawl-fall-2023. 
  177. ↑ "Chess.com Launches PogChamps With Top Twitch Streamers". https://www.chess.com/news/view/chess-com-pogchamps-twitch-rivals. 
  178. ↑ "PogChamps 3 Infographics" (in en-US). 2021-02-28. https://www.chess.com/news/view/pogchamps-3-infographics-chess-com. 

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