Sergash: Emil Hermansson is an international master since 2000. Born in 1971, he was 29 or 30 years old when he played this game. At the time of the game, he was rated 2400, compared to Carlsen's 2064. Early 2016, Hermansson is rated 2437.
I checked the game with the program Stockfish 7 - 64 bits POPCNT.
<9.Ne1N Qb6!> appeared to be a novelty at the time of the game. There was 9.Nbd2! Be7 10.a3 c4 = Jordi Estrella Vidiella (2295) vs Carlos Garcia Palermo (2490), Malgrat del Mar (Spain) 1991, 1-0
<10.Qd2?!> 10.b3! = Anastasia Bodnaruk (2412) vs Monika Tsiganova (2185), 13th Woman European Championship 2012, round 2, 1-0
<10...Be7?!> Missing an opportunity to secure an advantage: 10...cxd4! 11.cxd4 Bb4! 12.Nc3 Ndxe5! 13.dxe5 d4! 14.Nf3 and then
A) 14...dxe3 15.Qxe3! Bc5 (or 15...Qxe3 transposing) 16.Qd2
B) 14...Bxc3 15.bxc3 dxe3 16.Qxe3! Qxe3! 17.fxe3
<11.f4?! 0-0!> 11.Bd3! Be4 (or 11...Bg6 = / ) 12.f3 (12.Bxe4 dxe4 ) Bg6! = /
<12.g4?! Be4> A dubious plan by Carlsen that exposes him too much. Better was 12.Bd3 Be4! 13.Bxe4 dxe4 14.Qf2
Also note that 12...Bg6? 13.f5 exf5 14.gxf5 would lose the black bishop.
<17...Nc2?!> Stronger was 17...f6! 18.exf6! Nxf6! 19.Qe2 Qa6! 20.Qd1 (if 20.Qza6 Nxa6 ) Nc6