(1) Jobava,Baadur (2710) - Carlsen,Magnus (2826)
39th Olympiad Khanty-Mansiysk 2010 Khanty-Mansiysk/Russia (4), 24.09.2010

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 Nc6 6.e4!?

Not a novelty per se, but there isn't even a single player over 2000 Elo on record with it. Jobava has clearly decided to sidestep any preparation Carlsen might have.

6...Nxe4 7.Qg4 f5 8.Qxg7 Qf6 9.Qxf6 Nxf6 10.Nf3 b6
So far, so normal, and the position is quite balanced. Carlsen decides to approach it in classic fashion, attacking the c-pawn weakness.

White wants to keep his opponent off-balance.

11...Na5 12.Nd4 Kf7 13.dxe6+ dxe6 14.Bf4 Ba6 15.Nf3 Ne4 16.Ne5+ Kf6 17.f3 Nd6 18.0-0-0 Rhd8

19.h4! Nf7
[19...Rg8?! 20.Bg5+! Illustrating the dangers involved. 20...Kg7 (20...Kxe5? 21.f4+ Ke4 22.Re1# ; 20...Rxg5 21.hxg5+ Kxe5 22.g3! and black is in serious trouble with the h-pawn falling and the king surrounded by mate threats.) 21.Rg1 h6 22.Bf4 Kh7 23.g4 and white is better.]

20.Nd7+ Kg7 21.Rh3 Kh8 22.Bg5! Nxg5 23.hxg5 Kg7 24.Rh6 Bxc4 25.Bxc4 Nxc4 26.Rdh1 Rh8 27.f4?
This move, which seems calm and logical is in fact a mistake that might have allowed the number one to save the game. [Best was 27.Rxe6 Rae8 28.Rc6 Nd6 29.Nf6 (29.Rxc7? Nb5 30.Rb7 Re7 ) 29...Rc8 30.Nd5 ]

[27...Rad8! would have restored the delicate balance. 28.Nf6 c5 29.Rxh7+ Rxh7 30.Rxh7+ Kg6 31.Rh6+ Kf7 32.Rh7+ Kg6 33.Rxa7 e5! 34.g3 e4! 35.Nd7 e3 36.Kd1 Rh8 37.Rc7 Rh1+ 38.Kc2 Kh5 (38...Rh2+? 39.Kb3 e2 40.Kxc4! e1Q 41.Ne5+ Qxe5 42.Rc6+ Qe6+ 43.Rxe6+ ) 39.Kd3 b5 and it is equal.]

28.Rxe6 Rae8

29.Rxh7+! Rxh7
[29...Kxh7 30.Nf6+ Kg7 31.Nxe8+ Kf7 32.Nc7 ]

30.Rxe8 Kf7 31.Ra8 Rh1+ 32.Kc2 a5 33.Ra7 Nxa3+ 34.Kd2 Rh2 35.Nxb6+ Kg6 36.Rxa5 Rxg2+ 37.Kd1 Nb1 38.Rxc5 Nd2 39.Nd5 Ne4 40.Rc6+ Kf7 41.Ne3 Rg3 42.Ke2 Ke8 43.Re6+ Kf7 44.Re5 Nxc3+ 45.Kf2 Rh3 46.Rxf5+ Kg6 47.Rf6+ Kg7 48.Nf5+ Kg8 49.Kg2 Rd3 50.Rd6 Ne2 51.Rg6+ Kh8 52.Rh6+ Kg8 53.Ne7+ Kf7 54.Ng6 Kg7 55.Kf2 Nc3 56.Ne7 Ne4+ 57.Ke2 Ra3 58.Nf5+ Kg8 59.Re6 Nc3+ 60.Kf3 Nd5+ 61.Kg4 Ra1 62.Re5 Rg1+ 63.Kf3 Rf1+ 64.Ke4 1-0