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a chess engine by primary author [[Don Dailey]] (died at the age of 57 on November 22, 2013) and since October 2013, by [[Mark Lefler]], supported by chess advisor and evaluation expert and Don's long time collaborator [[Larry Kaufman]]. Since 2015, [[:Category:Opening Book Author|opening book expert]] [[Erdogan Günes]] is responsible for Komodo's [[Opening Book|book moves]].

As winner of the TCEC 5 final, Komodo '''TCEC''' was released on December 04, 2013 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=50324 Komodo TCEC released] by [[Larry Kaufman]], [[CCC]], December 04, 2013</ref>, the further improved Komodo '''7''' on May 21, 2014, during the [[TCEC Season 6#Superfinal|TCEC Season 6 final]] versus [[Stockfish]] again, now supporting [[Syzygy Bases]] <ref>[http://komodochess.com/Komodo7-38a.htm Komodo chess engine - Komodo 7]</ref>, probing code interface implementation by [[Jeremy Bernstein]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=52391&start=7 Re: Komodo Syzygy evals] by [[Larry Kaufman]], [[CCC]], May 21, 2014</ref>.

Komodo '''8''', released on September 05, 2014, is was a substantial improvement over Komodo 7a, which was already rated among the top three chess engines on almost all rating lists <ref>[http://komodochess.com/Komodo8-40a.htm Komodo chess engine - Komodo 8]</ref>. Komodo 8 supports [[Syzygy Bases]] and is available for [[Windows]], [[Linux]], [[Mac OS]] and [[Android]], the latter immediately available for import in [[Chess for Android]] and in [[Chess for Glass]] <ref>[http://aartbik.blogspot.de/2014/09/more-on-komodo-8.html More on Komodo 8] by [[Aart Bik]], September 9, 2014</ref>. Since mid September 2014, Komodo 8 for Windows is available as [[ChessBase]] engine, bundled with the [[Fritz#DeepFritz14|Deep Fritz interface]], Syzygy bases not included <ref>[http://shop.chessbase.com/en/products/komodo_chess_8 Komodo 8] - [[ChessBase|ChessBase Shop]], September 10, 2014</ref>.

Komodo '''9''', released on April 28, 2015, continues continued the progress with approximately +50 Elo over Komodo 8 due to improved [[Search|search]], [[Evaluation|evaluation]], and [[Time Management|time management]], as well as more efficient use of multiprocessing <ref>[http://komodochess.com/Komodo9-43a.htm Komodo chess engine - Komodo 9]</ref>. Most noticeable is the increase in [[Depth|search depth]] reached in a given amount of time, which is due to better [[Extensions|extension]], [[Reductions|reduction]], and [[Pruning|pruning]] rules <ref>[http://www.talkchess.com/forum/viewtopic.php?t=56092 Komodo 9 Announcement] by [[Larry Kaufman]], [[CCC]], April 22, 2015</ref>. Further, Komodo 9 now features [[Chess960]] and a [[Persistent Hash Table|persistant hash]] to save and restore analysis.

<span id="MCTS"></span>==Komodo MCTS==In Komodo's [[Monte-Carlo Tree Search|MCTS ]] mode the [[Search Tree|search tree]] is expanded in [[Best-First|best-first]] manner based on [[Pawn Advantage, Win Percentage, and Elo|winning probabilities]] determined not neither by random playoutsnor by a [[Neural Networks|neural network]], but a tiny [[Alpha-Beta|alpha-beta search]] plus [[Quiescence Search|quiescence]] and [[Evaluation|static evaluation]], also similar to [[UCT]], dealing with the crucial trade-off between [https://en.wikipedia.org/wiki/Monte_Carlo_tree_search#Exploration_and_exploitation exploration and exploitation]. While [[Playing Strength|playing strength]] is lower with MCTS, positional play and judgement may well be better in many positions <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67441 Komodo 12 and MCTS] by [[Larry Kaufman]], [[CCC]], May 14, 2018</ref>, not to mention a more risky and entertaining playing style.

* [[Tamal T. Biswas]], [[Kenneth Wingate Regan|Kenneth W. Regan]] ('''2015'''). ''Measuring Level-K Reasoning, Satisficing, and Human Error in Game-Play Data''. [[IEEE]] [http://www.icmla-conference.org/icmla15/ ICMLA 2015], [http://www.cse.buffalo.edu/~regan/papers/pdf/BiRe15_ICMLA2015.pdf pdf preprint]

* [https://rjlipton.wordpress.com/2015/10/06/depth-of-satisficing/ Depth of Satisficing] by [[Kenneth Wingate W. Regan|Ken Regan]], [https://rjlipton.wordpress.com/ Gödel's Lost Letter and P=NP], October 06, 2015 » [[Depth]], [[Match Statistics]], [[Pawn Advantage, Win Percentage, and Elo]], [[Stockfish]], [[Komodo]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=57890 Regan's latest: Depth of Satisficing] by Carl Lumma, [[CCC]], October 09, 2015</ref>* [https://rjlipton.wordpress.com/2016/01/21/a-chess-firewall-at-zero/ A Chess Firewall at Zero?] by [[Kenneth Wingate W. Regan|Ken Regan]], [https://rjlipton.wordpress.com/ Gödel's Lost Letter and P=NP], January 21, 2016

* [https://rjlipton.wordpress.com/2014/12/28/the-new-chess-world-champion/ The New Chess World Champion] by [[Kenneth Wingate W. Regan|Ken Regan]], [http://rjlipton.wordpress.com/ Gödel's Lost Letter and P=NP], December 28, 2014 » [[Larry Kaufman]], [[TCEC Season 7]]