Adhiban's Glek/Mieses Vienna: Unusual Openings Tata pt8

Adhiban pulls yet another obscure e4 e5 opening out of his hat, this time the Vienna with immediate g3 Bg2. This unassuming variation hasn't been seen at a high level since Smyslov (afaik), and 2700+ Andreikin appears clueless in the opening.
I explain why and how Adhiban gains a big advantage, and a better approach to this opening for black.

PGN:
[White "Baskaran Adhiban"]
[Black "Dmitry Andreikin"]
[Result "1-0"]

1.e4 e5 2.Nc3 Nc6 ( 2...Nf6 3.g3 d5 4.exd5 Nxd5 5.Bg2 ) 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 Nge7 ( 6...f5 7.Nf3 ( 7.fxe5 Nxe5 8.d4 Nc6 9.Nf3 Nf6 10.exf5 ( 10.e5 dxe5 11.dxe5 Qxd1+ 12.Nxd1 Ng4 ) 10...Bxf5 ) 7...fxe4 ( 7...Nf6 8.fxe5 dxe5 9.O-O ) ( 7...Nge7 8.fxe5 ( 8.O-O O-O 9.Bd2 ( 9.Be3 ) ) 8...Nxe5 9.d4 Nxf3+ 10.Bxf3 O-O 11.O-O fxe4 12.Nxe4 d5 13.Ng5 ) 8.Nxe4 exf4 9.Bxf4 d5 ) 7.Nf3 Nd4 ( 7...f5 ) 8.O-O Bg4 9.Be3 c5 10.Qd2 O-O ( 10...Nxf3+ 11.Bxf3 Bxf3 12.Rxf3 f5 13.fxe5 dxe5 ( 13...Bxe5 14.Bg5 ( 14.Bh6 ) 14...Bxc3 15.Qxc3 O-O 16.Raf1 ) 14.Bg5 ) ( 10...Bxf3 11.Bxf3 Kf8 ( 11...O-O 12.Bg4 ) ) 11.Nh4 exf4 ( 11...Rb8 12.f5 ( 12.h3 Bc8 13.g4 ) 12...gxf5 13.h3 Bh5 14.exf5 f6 ) 12.Bxf4 Qd7 13.Rf2 Rae8 14.Bh6 Bxh6 15.Qxh6 b5 16.h3 Be6 17.Raf1 Qd8 18.Nb1 d5 19.Nd2 dxe4 20.Nxe4 Nef5 21.Rxf5 Nxf5 22.Rxf5 Qd4+ 23.Rf2 f5 24.Ng5 Qg7 25.Qxg7+ Kxg7 26.Bc6 h6 27.Nxe6+ Rxe6 28.Bxb5 Rb8 29.a4 a6 30.Bc4 Re1+ 31.Kg2 Rxb2 32.Bxa6 Rc1 33.Bc4 Rcxc2 34.Rxc2 Rxc2+ 35.Kf3 Kf6 36.a5 g5 37.a6 Rc1 38.Ng2 Ke5 39.Ne3 h5 40.Nc2 g4+ 41.Ke3 gxh3 42.a7 h2 43.a8=Q h1=Q 44.Qb8+ Kf6 45.Qf8+ Kg6 46.Bf7+ -- Watch live at   / dpruess