e4coach

Find the weaknesses costing you rating.

A personal chess coach that turns your own games into a clear, honest report — free.

  • ✓We import your games. Your recent public Lichess games — no password, no OAuth.
  • ✓We find your patterns. A chess engine reviews every move to pinpoint what costs you rating.
  • ✓You get a clear plan. Your top 3 weaknesses, in plain language, with your own positions.

We only ever read your public games. Your email is used to send your report and nothing else.

Time controls

The core idea

Fix the mistakes you keep repeating.

A single-game review tells you what went wrong in that game. e4coach reviews a batch of your games together, groups the mistakes, and shows the weakness patterns costing you the most rating — so you train the root cause, not one-off blunders.

From scattered mistakes to ranked weakness patternsSix of your games each show mistakes; e4coach reviews every move and ranks the mistakes you repeat most, such as hanging pieces, missed tactics, and weak defense.Your gamesEvery move reviewedYour top patternsHanging pieces×7Missed tactics×5Weak defense×4
We review every move across your games and rank the mistakes you make most — so you know exactly what to work on.

Most analysis looks at one game

An engine shows the best move and where you slipped — game by game. Helpful, but it's on you to notice what keeps happening.

e4coach looks across your games

We review every move in up to 25 games and cluster your mistakes, so your recurring habits rise to the top — each shown with your own positions.

The patterns we look for

  • Hanging pieces
  • Missed tactics
  • Opening inaccuracies
  • Failing to convert
  • Defending under pressure
  • Endgame technique
  • Time management
  • Positional drift

Beginner → ~1800Built for beginners through intermediate players, where clear, repeated patterns are the easiest wins — and still useful for stronger players to catch their blind spots.

Going deeper

Not just what — but where.

Knowing you hang pieces is useful. Knowing you hang them mostly in isolated-pawn positions or rook endgames tells you exactly what to study. e4coach tags every position by its structure and finds the ones where you slip far more than usual.

Mistake rate by position type versus your baselineFor each kind of position, e4coach compares how often you err against your own overall mistake rate, so the structures where you slip most — such as isolated pawns and open files — rise to the top.Your usual rate2.1×Isolated pawns1.6×Open files1.3×Rook endgames1.1×Open positionsClosed positionsQueenless
Each position type compared to your own mistake rate — the tall red bars are the structures quietly costing you the most.

The positions we look at

Pawn structure

  • Isolated pawns
  • Isolated queen pawn
  • Doubled pawns
  • Passed pawns

Position type

  • Open positions
  • Closed positions
  • Open files

King safety

  • Opposite-side castling
  • Exposed king

Endgames

  • Rook endgames
  • King & pawn
  • Minor-piece
  • Opposite bishops

Only structures where you have enough games to be sure are shown — so you get a real signal, not noise from a single bad day.

Want a weekly training plan built from your games?

Targeted drills and a plan that adapts as you improve. Coming soon.