Try the real app
Compare a missed chance
Open a real review at 9…Bb7 in Lasker–Thomas. Use Compare to see where the played and best lines finish.
Open this review in the app →Press Compare in the explanation, then close it and follow the green Better was line.

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
Edward Lasker – George Alan Thomas · London · 1912.10.29.
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.