CHESSExplain

Understand every move.
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Chess Explain combines Stockfish's engine depth with neural coaching. Every mistake comes with a clear explanation in plain English, not just an evaluation bar.

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ANALYSIS
Why was Na4 played here?

15. Na4 is a positional preparation to occupy the c5 outpost. From a4, the knight provides essential overprotection for the c5 square, complementing the Be3.

This maneuver exploits Black's structural weaknesses, specifically the c5 hole and the doubled c-pawns. By establishing a dominant knight on c5, White pressures the Be6, restricts Black's queenside mobility, and cements a lasting positional advantage.

FAQ

Common questions

Yes. Creating an account is free and gives you ~10 AI analyses per month, unlimited puzzles with rating tracking, all training modes, and social features. No credit card required, ever.
Each click of "Analyze position" or each follow-up question you ask about a position counts as one call. Stockfish evaluation (the bar and best move arrow) is unlimited and free — it only counts when the AI generates an explanation in English.
Stockfish tells you what the best move is. Chess Explain tells you why — in plain language matched to your level. It also explains what you missed, names the strategic idea, and lets you ask follow-up questions. Beginners get simple explanations; advanced players get engine-level reasoning.
Yes. Enter your Lichess username and your recent games appear instantly — one click to analyze any of them. You can also paste a PGN, enter a FEN, or set up a position manually on the board.
Yes, cancel anytime from your account settings with one click. You keep Premium access until the end of your current billing period. No questions asked, no cancellation fees.
All levels. The AI calibrates every explanation to your chosen level, so complete beginners get plain-language guidance while club players get engine-level reasoning. Tactical puzzle training adapts to your rating as you improve. Choose Beginner, Intermediate, or Advanced mode and the AI adjusts its language and depth accordingly.
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