Game sources
Connections
Link your chess accounts so Mainline can analyse your games.
Connect your accounts to enable blunder practice
Mainline imports your public game history to detect key tactical mistakes and convert them into personalized spaced-repetition drills.
Lichess
Link by username to import public profile and game data. Your Lichess password and token are not stored.
Chess.com
Link by username (read-only public data; no password or token stored).
Connected accounts
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Connect an account above to unlock calibration.