From your real games
to the right book — in four steps.
Bring your games
Paste your Lichess or Chess.com username, drop in a single game (PGN), or upload a scoresheet photo.
The engine finds the leaks
A full-strength engine (Stockfish) checks every move and pinpoints where the points actually went.
We name the pattern
Your slips are grouped into real weaknesses — back-rank, hanging pieces, rook endgames, calculation.
You get the right book
We match your top weaknesses to a curated catalogue, filtered to your rating, and explain why each pick fits.
Jadoube — I adjust.
In chess, you say j’adoube before touching a piece to adjust it — a small, deliberate correction, made before the real move. That’s the whole idea. We find the small things you’re getting wrong, and adjust them, before they cost you the game.
No incumbent chess shop does this — they’re catalogue-and-cart. We are the recommendation.
Grounded in an engine
The diagnosis comes from objective evaluation, then a coach-style explanation in plain language.
Right difficulty, every time
Each title carries an effective rating range, so a pick lands where it will actually help — never over your head.
It remembers
The more games you bring, the sharper your weakness profile — and the better the recommendations.
Some recommendations link out to partner shops — currently Forward Chess. If you buy through one of those links we may earn a commission, at no extra cost to you. Affiliate links are always marked as such.
The coach lives in your pocket.
/review a game, /scan a diagram, drill your own blunders with /woodpecker. Free for everyone, funded by supporters.
Bring your games. Meet your coach.
The coach is live on Discord — free for everyone, no paywall. Prefer email? Leave your address and we’ll keep you posted.
