A Chess Engine That Explains

The first AI chess tutor, DecodeChess explains the why behind chess engine moves in rich, intuitive language. Start improving your chess with the most advanced chess analysis software , for free!

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chess analysis software - screenshot from decodechess

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Recommended by Top Players & Coaches

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GM Anish Giri

“DecodeChess are taking chess tech to a new level and have created a software that explains the engine recommendation in simple and understandable terms. “

Top #10, Dutch #1

GM Boris Gelfand

“It helps trainers to spot and understand the hidden possibilities of the positions.”

World Championship Challenger

GM Sam Shankland

“…it’s absolutely astounding. Their program explains the best engine moves in very understandable, human terms- not evaluation numbers. This could be a tremendously useful training tool for club players. “

Former US Chess Champ

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Explanations that Help You Win

Powered by a unique AI algorithm, DecodeChess combines the merits of a chess master and the strongest chess engine available (Stockfish 12). By providing personal feedback on your own chess moves, we help you improve your skills and win more games. We invite you to try the next generation of chess analysis software for free.

Watch GM Sam Shankland analyzing a notable game with DecodeChess:

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Play Against a Human-like Opponent

Our computer opponent adapts to your game style and responds accordingly to create a balanced game experience. In addition, you can decode positions as you play, to create a personalized instructional chess analysis mode!

Who is it for?DecodeChess Technology Founders’ Message

Who is it for?

DecodeChess was created for chess enthusiasts who want to improve their skills and understand the reasoning behind every chess move. If you are a chess player with an ELO rating of up to 2000; using a chess engine and can’t figure out its recommendations; always wondering “what is the next best chess move?”; Can’t stop thinking to yourself “why is this move good?”; want to discover the beauty and logic behind your games or behind masters’ games; appreciate the advantages of self-analysis;

then we think DecodeChess is the right place for you :)

We are here to help you win more moves and to become a better chess player, by adding a dimension to chess analysis that was so far out of reach.

The Technology Behind DecodeChess

DecodeChess introduces Explainable AI (XAI) to the world of chess analysis, by providing in-depth explanations to a chess engine’s moves. Until today, chess engines could tell you what the next best chess move is, but they couldn’t explain why that move was chosen. Learn More…

A Word from the Founders

We are delighted you can join us on this chess adventure. Understanding Chess and AI has been a great source of interest and inspiration for us for a long time. We worked to combine these two worlds for several years and are excited with the results which we call DecodeChess: a tool that promotes chess understanding for the community of chess players.

There is still much more to come, we hope that you enjoy DecodeChess and help us expand this exciting project.

Sincerely yours,
Ofer & Zeev

What Chess Players Say About Us

“DecodeChess helps me go through all of my games and assess my strengths and weaknesses. With a chess coach, I might be able to analyze one or two games per week. With your product, I can analyze many times more. In that way, the technology you’ve invented is helping make me a better chess player.”

Peter RadaelliUnited States

“I have been playing the DecodeChess computer and using the Decode process to work through the various main lines. The running graph that is displayed is excellent as well. Whole setup is working really well and I am learning a lot, easily the best chess education around.”

Ray JohnsonNSW - Australia

“I am really engaged, and like the way it describes everything in human language and is easy to understand. I fully studied the Danish Gambit, and use it as my main opening now.”

Harut BadalyanOxford - United Kingdom

“I enjoy the insights Decode Chess supplies, especially on the complex mid-game positions. Although I’m not a very strong player (yet) I appreciate the depth and explanations that Decode Chess provides. I highly recommend this app.”

Guy BekerMelbourne - Australia

I love the range and depth of the analysis provided after a “decode.” This is the most helpful feedback I have ever found.

John WilliamsenUnited States (US)

Thanks again for making DecodeChess in the first place. It’s like those wonderful books I learned so much from where the reasons behind each move were explained, getting ideas pointed out to me like a chess coach does.

Dan O’hanlonUnited States