Is my analysis always sent to Let's Check?
No. Clicking the button "Disconnect" breaks the connection and no more data is sent via the Internet.
To do this the program must have been activated with a valid activation key.
When Let’s Check is active engine analysis is sent to the database, and already existing analyses are received. All queries of a position are stored in the database and counted as “visits”. No other data is sent, and no complete games.
If information has been sent it means the user has entered this move notation with the Let’s Check feature running.