A study room for chess
Stop watching chess.
Start understanding it.
Drill openings until they’re second nature. Review your own games with a strong engine in your browser. No accounts, no scattered YouTube tabs — just focused practice.
- 184
- curated openings
- Stockfish 18
- runs in your browser
- 0 ms
- server roundtrip
Featured opening
London System D02
1.d4 d5 2.Nf3 Nf6 3.Bf44 lines · 7 moves
01Lessons & drills
Drill openings
Step through main lines and side variations. The app plays for your opponent — you find the right reply.
1.d4 · Italian · Najdorf · Caro-Kann
02In-browser engine
Review your games
Paste a PGN or upload .pgn. Stockfish flags every inaccuracy, mistake, blunder, and brilliancy — with explanations.
depth 20 · classified · PV shown
03Lichess & Chess.com
Import & study
Pull your last 50 games from Lichess or Chess.com by username. Pick one and the analyzer opens it in a click.
public APIs · no login