Find the crosses hidden in the colours — and unbuild them in reverse.
Free chess game review that tells you why
Stage
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Founded
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Based in
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Pricing model
Freemium
Freemium
Pricing
Free with ads; premium one-time purchase removes advertising and unlocks larger boards.
Free: $0. Pro: $9.99/month, $69/year, or $149 lifetime (early-bird for first 100 buyers, then $249). Pro covers up to 100 Coach-explained games and 50 scoresheet photos per month.
Key features
Reverse-order puzzle solving with visual stack unwinding
Budget-based scoring system with vessel metaphor
Two-tap control interface with visual feedback
Difficulty selection with variable cross counts
Musical scale progression during gameplay
Hint system with cross visualization
Six language interface support
Interactive help tour
Adjustable board size for varied challenge
Accuracy scoring based on winning chances
Move labels: inaccuracy, mistake, blunder
No account required for free review
Import games from Lichess or Chess.com
Coach written explanations in plain language
Scoresheet photo to PGN conversion
Suspected mistakes checked twice at greater depth
What makes it different
Plays the game's deal sequence backwards as sound when solving
One-time purchase with no subscriptions or additional in-app purchases
Score system uses visual vessel metaphor instead of climbing counter
Clean minimalist UI with readable typography and strong UX
Honest labeling: mistakes rechecked deeper before labeling
No uploads for free review: analysis runs locally in your browser
Free review never requires account or has daily limits
One-click review for returning users with remembered username
Explain My Chess