Analysis lab
Explore positions move-by-move and ask the engine for the best move. This is for study and experimentation — not the same as post-game review on finished games.
Finished bot or online games are saved to your profile with a dedicated review page (accuracy, blunders, eval graph).
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Create a free account to save progress, sync across devices, and subscribe to Pro on web or mobile.
Position explorer
Red to move
Click a highlighted column header to drop a disc. Headers brighten on hover.
Use Engine: best move for a single-line recommendation without running a full game review.