The two 2800s started with wins in the first round of the Zurich Chess Challenge. Magnus Carlsen defeated Boris Gelfand in an incredibly tactical queenless middlegame, while Levon Aronian won against Vishy Anand after 73 moves in an ending with a knight against two pawns. Hikaru Nakamura and Fabiano Caruana drew a Grünfeld game after 67 moves.