Click a piece, then click squares to place it (click the same square again to remove). Drag pieces on the board to move them; drag off the board to delete. Max 20 pieces.
Photos are read by AI on my relay and never stored. Engine analysis runs entirely in your browser; only ≤7-piece positions query the Lichess tablebase.
Mission brief
AI coach
Move by move
Play a move — every move is graded against the tablebase or engine, and blunders that change the result are called out immediately.