White to move - mate in 3

Alexey Korotylev vs Sergey Smagin, Sochi, 2004

[FEN "3br3/pp2r3/2p4k/4N1pp/3PP3/P1N5/1P2K3/6RR w - - 1 0 KQkq - 0 1"] [NAVIGATION "0"] [CUSTOM_MOVE "1"] 1.Rxh5+ Kg7 2.Rgxg5+ Kf6 3.Rg6#