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The Rossolimo Variation, 3.Bb5, is a well-respected alternative to 3.d4. It is named after Nicolas Rossolimo and is related to the Moscow Variation. White's usual intention is to play Bxc6, giving Black doubled pawns. Black's major responses are 3...g6 preparing ...Bg7, 3...d6 preparing ...Bd7 (a hybrid line that also arises from the Moscow Variation after 2...d6 3.Bb5+ Nc6), and 3...e6 preparing 4...Nge7. Sergei Rublevsky and Tomáš Oral both play this line as well as the Moscow Variation. The Italian American Grandmaster Fabiano Caruana is perhaps the biggest proponent of this line at the top level, and has played this variation in Games 1, 3 and 5 of his World Championship Match against Magnus Carlsen.
We start by looking at this video from GM Arturs Neiksans