White to move - mate in 3

Parimarjan Negi vs Arnd Lauber, Germany, 3/17/2013

[FEN "3R4/r6p/Pkp1N1p1/3p1n2/1P3P2/2P2K2/7P/8 w - - 1 0 KQkq - 0 1"] [NAVIGATION "0"] [CUSTOM_MOVE "1"] 1.Rb8+ Rb7 2.Rxb7+ Kxa6 3.Nc5#