13.Nh4 The opening had turned out well for Black but putting the White knight on H4 only allows Black to seize the initiative and establish a more meaningful advantage.

13...g5 14.Ng2 f6 15.f4 h6 16.Rae1 Rae8 17.Bg6 Re7 18.fxg5? This does nothing to help White and in fact only gives Black a free hand

18...hxg5 19.Bc2 Kg7 A useful move generally, frees the rook on F8 and allows for the option of using the H file

20.Nf3 b5! 21.a3 Na5 22.Rf2 Nc4 23.Bb1 a5 24.Rfe2 Rfe8 25.Ne3 Nxe3! 26.Rxe3 e5 27.Bd3 [27.dxe5?? Bc5 28.exf6+ Kxf6 Just losses]

27...Bc6 [27...e4? 28.Bxb5 Rd8 29.a4 Rf7 Would leave Black with compensation but maybe not much more.]

28.Bf1 e4 Even though Black has not won any material advantage [yet!] he already has a winning position now.

29.Nd2 f5 30.R1e2 Rh8 31.Rg2 Kf6 32.Nb3 Bc7 33.Rf2 Reh7 34.Nc1 f4 35.Ne2 f3 36.h3 g4 37.Kh2 Kg5 A delicious theme of a Kingside attack with the King!

38.Ng1 Rh6 39.b3 Rf6 40.c4 bxc4 41.bxc4 gxh3 42.cxd5 Bxd5 43.Rc2 Bd6 44.a4 Kg4 I had been dying to play this for several moves but now is the right time.

45.Bxh3+ Rxh3+! The point!

46.Nxh3 Bxg3+ 47.Kg1 Kxh3 48.Rc5 Rb6 49.Rec3 e3 A nice way to end it all. 0-1