Train

Sharpen your game. Practice vs. the engine with branching variations, run drills, or explore a position freely.

Practice Game

Play vs. the engine with branching variations, swap sides at any move, and (soon) ask a coach for explanations. Pick a difficulty to start.

Solve tactics tuned to your level. A puzzle rating that adapts as you go, plus a strengths radar across forks, pins, endgames, and more.

Move both sides yourself, at your own pace. Good for drilling openings or analyzing a finished game.

Load a FEN or PGN and explore freely — no engine opponent, full branching tree, coach available.