Top Chess Engine Championship, formerly known as Thoresen Chess Engines Competition (TCEC or nTCEC), is a computer chess tournament that has been run since 2010. It was organized, directed, and hosted by Martin Thoresen until the end of Season 6; from Season 7 onward it has been organized by Chessdom. It is often regarded as the Unofficial World Computer Chess Championship because of its strong participant line-up and long time-control matches on high-end hardware, giving rise to very high-class chess.[1][2][3] The tournament has attracted nearly all the top engines compared to the World Computer Chess Championship.
After a short break in 2012,[4] TCEC was restarted in early 2013 (as nTCEC)[5] and is currently active (renamed as TCEC in early 2014) with 24/7 live broadcasts of chess matches on its website.
Chess Engine Vitruvius 1.1
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Prior to season 21, there was originally one tournament in each season. This tournament consisted of several qualifying stages and one "superfinal", and the winner of the superfinal is called the "TCEC Grand Champion" until the next season. Prior to season 11, the tournament used a cup format, while starting in Season 11, the tournament used a division system. Starting in season 13, there was also a cup tournament consisting of the top 32 engines in the main tournament, resulting in a 5-round single elimination tournament.[8]
Pondering is set to off. All engines run on mostly the same hardware[9] and use the same opening book, which is set by the organizers and changed in every stage. Large pages are disabled, but access to various endgame tablebases is permitted. Engines are allowed updates between stages; if there is a critical play-limiting bug, they are also allowed to be updated once during the stage. In previous seasons, if an engine crashes 3 times in one event, it is disqualified to avoid distorting the results for the other engines; however starting in TCEC Season 20, an engine is allowed to crash as many times as possible without being disqualified from the current event; however, the engine will still be disqualified from future events unless the crash is fixed.[10] TCEC generates an Elo rating list from the matches played during the tournament. An initial rating is given to any new participant based on its rating in other chess engine rating lists.
Usually chess engines that support multiprocessor mode are preferred (8-cores or higher), and engines in active development are given preference. Since TCEC 12, engines like LCZero which use GPUs for neural processing were supported.
Initially, the list of participants was personally chosen by Thoresen before the start of a season. His stated goal was to include "every major engine that is not a direct clone".[12] In TCEC 13, DeusX was banned due to being a clone of Leela, and in TCEC 20, Houdini, Fire, Rybka (engine in Fritz up to TCEC 16), and Critter were banned due to allegations of plagiarism.
"Killed" engines are engines we temporarily removed from our list.Most common reason is that they don't have enough games and none of us is enthusiastic to test them more.All games of these engines are removed from the database as well and not used for the rating list.
Select additional individual engines or engine families.You can select multiple items in each list by pressing SHIFT or CTRL while selecting.These lists can be used all at the same time, all selections will be simply combined together.
Reference rating list: 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ELOSTATCCRL-4040.2008-12-19CCRL-4040.2009-01-02CCRL-4040.2009-02-06CCRL-4040.2009-03-06CCRL-4040.2009-04-03CCRL-4040.2009-05-01CCRL-4040.2009-06-06CCRL-4040.2009-07-03CCRL-4040.2009-08-07CCRL-4040.2009-08-14CCRL-4040.2009-08-21CCRL-4040.2009-08-28CCRL-4040.2009-09-04CCRL-4040.2009-09-11CCRL-4040.2009-09-18CCRL-4040.2009-09-25CCRL-4040.2009-10-02CCRL-4040.2009-10-09CCRL-4040.2009-10-16Recalibrate: No recalibration (reference and current list are compared as they are) Recalibrate reference list to current one using selected engines only Recalibrate reference list to current one using all common engines Recalibrate current list to reference using selected engines only Recalibrate current list to reference using all common engines 2ff7e9595c
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