Sharpen your game
Four ways to train, all free, all in your browser. Drill openings until they’re second nature, test your memory, solve real-game puzzles, or evaluate a position with Stockfish.
Opening Drill
Pick an opening, choose your color, and play the moves. The computer plays the book line back. Miss a move and we catch it on the spot.
Start drilling →Memorise the Position
Study a position from a real opening, then reconstruct it from memory. Tests how well you actually see the board.
Test your memory →Puzzles from Real Games
Solve blunders and missed tactics extracted from actual grandmaster games. Find the move they missed.
Solve puzzles →Free Analysis
Paste a position, get instant Stockfish evaluation in your browser. No signup, no daily limit.
Open analysis →Opening Explorer
Live position-keyed tree of 4 billion Lichess games. Click any move to drill deeper. Switch to Masters to see how strong players handle it.
Explore positions →