Master chess openings, one move at a time.

Chess Opening Trainer turns opening theory into short, focused drills so it actually sticks at the board — not just in a database.

Move-by-move drills

Every line is broken into single moves, so you build real board recognition instead of memorizing a wall of notation.

Miss a move and the trainer loops you back, the same way spaced repetition works for flashcards — but for openings.

Courses are labeled by the color you're training, so you can drill your White repertoire or your Black defenses.