Your openings. Your lines. Actually memorized.
OpeningDrill turns opening study into muscle memory. Record your repertoire move by move, drill it against a board that plays the other side, and let your real games show you exactly where the holes are.
Free while in beta. Your repertoire syncs to your account on any device.
Unlimited openings, unlimited lines. Record a line by playing the moves for both sides on a full-strength board — legal moves only, chess.com-style arrows and all.
Pick your color and the board fires back with your own prep. Wrong moves bounce, hints appear when you stall, and branch points keep you honest.
Import your chess.com and lichess games and see the exact move you left your prep — or where the engine says you went wrong. Patch the hole in one click.
Stockfish runs right in your browser while you build: eval bar, best moves, and blunder checks before a line earns its place in your repertoire.
Lines come back for review right before you'd forget them. Perfect recall pushes reviews out; mistakes bring them back sooner. Suggestions, never homework.
One account, every screen. Build at your desk, drill from the couch, review on your phone before round one — your repertoire is always with you.
Create an opening and play the moves for both colors — or import a game from chess.com or lichess and build from what you actually played.
Choose your color. The board answers with your recorded moves — miss one and you'll know immediately.
Lines that share moves merge into one tree, drilling covers every branch, and reviews return each line right before you'd forget it.