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Komodo 11

Komodo 11

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Special Price $59.97

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Komodo 11.3 (Latest version). Faster and meaner! The World's #1 Chess Program!! + comes with one-month ICC membership!

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Regular Price: $69.91

Special Price $59.97

(Digital Download)


Komodo 11.3

The World #1 rated chess engine

Rated #1 by all major chess engine rating lists: CEGT IPON CCRL ,FastGM!

The 2016 and 2017 World Computer Chess Champion and World Computer Rapid Chess Champion!!

Komodo is a three-time TCEC champion and current World Computer Chess Champion. Version 11.2 is an improved version of the one that recently won both the 2017 World Computer Chess Championship (despite a 40 to 1 hardware disadvantage vs. its main rival) and the 2017 World Blitz Software Chess Championships. Komodo 11.2 is an improvement over the version that won the 2017 World Rapid Computer Chess Championship with an incredible 96% score. It also defeated a strong grandmaster by 3 to 1 despite giving him a two pawn handicap.

"I am deeply moved by the style of Komodo. In my opinion it's the perfect combination between computer accuracy and human positional understanding. I get the feeling it's taken positional understanding to the next level. After such an impressive performance I am going to test Komodo in my future work, especially in very positional play, and am really looking forward to working with it."

- GM Boris Avrukh

"I am extremely impressed by Komodo's play. I watched and analyzed every game and it was absolutely flawless positional chess, the likes of which has never been seen before by an engine... or human. Komodo clearly outplayed the other programs in the TCEC tournament."

- GM Roman Dzindzichashvili

Komodo mastermind GM Larry Kaufman introduces Komodo 11.3

[March 5, 2018] We have We have just released Komodo 11.3. It is about 40 elo stronger than Komodo 11.01 and 85 elo stronger than Komodo 10. Komodo 11.3 is free for those with active subscriptions. 

Compatable GUIs

- BlitzIn, Dasher, ICC for Windows, ICC for Mac
- Chessbase 

- Fritz 
- Aquarium 
- Chess Assistant 
- Hiarcs Chess Explorer 
- Shredder (Classic) 
- Arena

System requirements

Minimum : Pentium III 366 MHz, 64 MB ram

Operating system : Windows, Linux, Mac OSX 10.5.8 or higher, ( Android version available only from Google) .(note: Komodo does not include a 'chessboard'. See 

(note: Komodo does not include a 'chessboard'. See Installation instructions .)


Komodo is three-time TCEC champion, the most prestigious online computer chess event, and has also won several CCT events and several World Championships. Komodo has won a four-game match giving various substantial handicaps to World Champion Candidate and then-U.S. Champion Hikaru Nakamura in two-hour games. 

Komodo supports Syzygy tablebases and is available for Windows, Linux, Mac, and Android. 


  •  Evaluation developed by a Grandmaster
  •  Multi-core support (up to 64 cores)
  •  Syzygy endgame tablebase support
  •  Fischer Random Chess support
  •  'Variety' lets you control how likely Komodo is to make a different move at the same depth in the same position.
  •  'Persistent Hash' lets you save Komodo's analysis of a position so you can come back later and resume analysis, saving you time
  •  'Dynamism' lets you control how willing Komodo will be to make long-term sacrifices of material or pawn structure for dynamic play.
  •  'Progress Threshold' (new) lets you control how quickly Komodo starts to worry about the fifty-move rule.
  •  'Skill' (new) this setting allows you to weaken Komodo in 150 elo increments from ELO 200 up to 2900 (from beginner to World Champion).

Change log

Komodo 11.3 (March 5, 2018)
  • Added Skill levels for weaker play
  • Added new BMI2-optimized version
  • Revised Contempt
  • Removed useless code
  • Revised search params
  • Revised Material Value params
  • Modified Aspiration
  • Modified low pawn count scaling
  • Modified Singular Extension
  • Speedups
  • Removed generation and counting of illegal king moves
  • Removed some scalings
  • Thread changes by Jeremy Bernstein
  • Fixed a 50-move rule bug
  • Modified passed pawn values
  • Modified Null Move
  • Modified Time Management to fix too rapid play on many threads
    one new eval term
Komodo 11.2 (July 17, 2017)
  • Removed one extension
  • Retuned search terms
  • Revised LMR
  • Revised Pruning
  • Revised Null Move
  • Revised Time Management
  • Revised Contempt
  • Changed Candidate Passed Pawns
  • Changed King Safety
  • Several speedups
  • Several Bugfixes
  • Made MP more NUMA-friendly
  • Revised Windowing
  • Revised Lazy Evaluation
  • Revised check and singular extensions
  • Revised Eval Scaling
  • Raised Knight value (to narrow bishop - knight gap)
Komodo 11.01 (May 22, 2017)
  • Several new eval terms
  • Revised King Safety
  • Several speedups
  • Minor bugfixes
  • revised quiescence search
  • revised Singular Extension
  • revised MP search
  • revised LMR
Komodo 10.4 (March 14, 2017)
  • Revised LMR
  • Revised Pruning
  • Revised Extensions
  • Revised IID
  • Revised Null Move
  • Speedups
  • New Eval terms
  • Changed Mobility
  • Tuned search and eval terms
  • Improved Move ordering
  • Faster Compile for Linux
  • New UCI option "variety" lets user control likelihood of same move at same depth in same position.
Komodo 10.3 (Dec. 21, 2016)
  • Better evaluation of king and pawn endgames
  • Revised LMR and IID
  • Speedups
  • Improved MP performance
  • History changes and move order improvements
  • Revised Pruning and Singular Extension
  • Many changes to Null Move
Komodo 10.2 (Oct. 29, 2016)
  • New Eval terms and revised Eval values
  • Better assessment of mobility/activity
  • More weight on king safety and attack
  • Revised LMR
  • Several speedups
  • Improved time management
  • Revised check extension
  • History changes
  • Bugfixes
  • Revised definition of candidate passed pawn
  • Move order improvements
  • Better pin handling
  • Revised pawn structure
  • Revised Pruning
  • Major changes to material evaluation
  • Revised stage weights
  • Many changes to Null Move
  • Faster Windows compile
Komodo 10.1 (July 21, 2016)
  • Added 'Progress Threshold', a UCI option which specifies how many plies must go by without capture or pawn move before Komodo starts pulling the score towards a draw.
  • Added 'Null Scale', a UCI option which controls how aggressively Komodo uses Null Move. Higher values make Komodo search deeper but miss more.
  • Improved use of Syzygy Tablebases.
  • Many changes to Null Move.
  • Many changes to LMR.
  • Revised values for several parameters.
  • Revised extensions.
  • Revised move-count pruning.
  • Revised quiescence search.
    Komodo 10 (May 18, 2016)
    • Added 'Magnify', a UCI option which multiplies the final eval by the given percentage
    • Revised Pawn Storm
    • Revised Extensions
    • Raised Dynamism default
    • Revised King Safety
    • Revised LMR
    • Revised Contempt
    • Adjusted Null Move constants
    • Revised IID
    • Revised History
    • Edited documentation

    Komodo 9.4 (March 18, 2016)
    • (new UCI parameter) 'Contempt for White' makes Contempt useful for analysis, by consistently assigning contempt to one color rather than to the player on move.
    • (new UCI parameter) 'Dynamism' gives the user control over how actively Komodo will play (at the expense of long-term factors).
    • Many search changes
    • MP changes
    • Speedups
    • New eval terms
    • Improved King Safety
    • Improved passed pawn scoring

    Komodo 9.3 (November 26, 2015)
    • As usual, the gains come from many areas. Many eval weights were re-tuned, some free speedups were found, lmr was refined, and a change was made to MP search. The readme file has more details.
    • Revised Contempt
    • Improved Selectivity
    • Tuning many eval terms plus some new ones
    • Several MP changes
    • Better time management
    • Stricter extension rules

    Komodo 9.2 (August 21, 2015)
    • New Contempt replaces Drawscore
    • Major re-tuning of most eval and many search parameters
    • Improved in time management
    • Improved move-ordering
    • Increased weight on all "dynamic" terms

    Komodo 9.1 (June 20, 2015)
    • Komodo searches faster due to optimizations in the program's code
    • Detailed improvements (for those of you ultra-technical chess engine geeks who want to see what's changed under the hood: New Endgame term, Revised LMR rules, Re-tuned eval terms, More efficient hash table, Revision to King Safety, Improved MP scaling, Improved trade-down incentives, Revised Selectivity Default, Improved Persistent Hash, Better fen position parser

    Komodo 9 (May 6, 2015)
    • Komodo was modified to ignore GUIs that repeatedly send the same commands. This was done to deal with the Aquarium GUI, which sends repeatedly sends Chess 960 commands with each new move. When receiving this command, Komodo 9 thinks the game type is changing, and clears its hash table, which reduces play quality.
    • The sudden death time control was improved.
    • The Windows 32 bit compile was modified to properly handle multiple threads.
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