A couple of remarks: Kakhovskaya line does not exist anymore since it was merged with Bolshaya Koltsevaya in 2023. Also, aren't Kalininskaya and Solntsevskaya lines still considered two separate lines, not the single one? I know that they are going to be merged together, but the central part of the yellow radius is not constructed yet, and they marked on the scheme as two different lines with two different symbols (8 and 8A). But all in all, very decent quiz :)