Here you can check out my interview with Magnus Carlsen after his victory over Evgeny Tomashevsky. The World Champion used the London system to beat the Russian Champion in only 30 moves, quite an achievement. I found this game quite instructive and have discussed it some of my pupils. With simple developing moves Magnus obtains a pleasant position out of the opening and gradually outplays Tomashevsky in the middlegame, starting with the powerful pawn sacrifice 16.f4!. Enjoy this free lesson by the World Champ!