Stockfish, classified moves, named patterns.
Drop a PGN, paste a FEN, or replay your last Maia game. Pawnther runs Stockfish 16 in the cloud, labels every move (brilliant → blunder), and detects the recurring habits behind your losses. Then it queues the drill that fixes them.
Four ways to get a game in.
Last Maia game
Automatic on game end. One tap to open the review.
Paste PGN
Drop the file, paste the text. Lichess/Chess.com export both work.
FEN position
Single position analysis. Useful for studying tactics or your own game in progress.
Lichess sync Soon
OAuth in. Your last 20 games auto-import on every login. Post-launch.
Four layers of feedback.
Each layer is independently useful. The pattern-detection one is what makes Pawnther different.
Eval bar + engine lines
Stockfish 16 at depth 22, three top lines per position, evaluation graph across the game. The classical-strength output you'd expect, served fast from the cloud.
Move classification
Every move labelled: brilliant, good, inaccuracy, mistake, blunder, missed-win. Each label has a one-line reason, not a silent eval-drop.
Pattern detection
"You keep dropping knights after queen trades." "You miss back-rank threats after castling kingside." Patterns are named in human language and aggregated across recent games.
Retry mistakes
Every blunder gets a retry button. Replay the position with Stockfish hints disabled. Find the move you should have played, get it queued for tomorrow's drill.
The analysis line.
Free gets you the essentials. Pro lifts the limits and adds pattern detection across your history.
Trainer analysis
- Stockfish depth 18 on last 3 games per week
- Top 1 engine line per position
- Basic move classification (good / inaccuracy / blunder)
- Retry blunders manually
Pro analysis
- Depth 22, unlimited games
- Top 3 engine lines, depth-adjustable
- Full classification + brilliant moves
- Pattern detection across last 50 games
- Automatic drill queueing from detected patterns
Drop a PGN. See what happened.
The fastest demo of Pawnther: load your own game and read the pattern report.