Karpov vs Ziuliarkin

35. Nxg6! Kg6 36.Bf4+ and 37.Bd6

If ..Rg8? I'm guessed Be7 Qb8 (...Rxg6 Qxg6!) Qg5, but then black hits first with ...Rxh2. Improvements? I still think white is winning after Kg1 (Not Rxh2), and if Rh1 Bxg1 since Qh2 now leads to Rxh2. The only problem is to improve on Qg5, since on Qf6+ Ke8,  white can only threaten mate on e7 by moving the bishop, sacking the exchange for the knight, etc... too slow. anyone see what im missing? perhaps after Rg8, Ne7? 

35...Rg8 36.Bf4 Rg6 37.Bd6 Rg1+ 38.Kg1 and white has a winning ending.