Try the real app
Try your own move
Open Légal’s game at 5…Bxd1. Go back one move and drag a piece to explore a different choice.
Open this review in the app →Press ◀ once to return before Bxd1. With “Explain moves I try” checked, drag the knight from b8 to c6. The app will analyze your move.

What you can do
The example opens a precomputed public game at one explained mistake. Use the normal move list, on-board annotations, captions, and Compare button. Drag a piece with “Explain moves I try” enabled to get a fresh explanation from Stockfish on your device.
The review opens without waiting for a full game analysis. Live engine evaluation and explanations of moves you try still take computation time.
Source game
Kermur de Legall – Saint Brie · Legal's mate · 1750.01.01.
Download the game (PGN). The selected explanation comes unchanged from the app’s public review fixtures, recorded at 1,000,000 nodes per position. Only this one moment is included in the demonstration; your saved reviews are not changed.