A Piece of Carlsen Magic

[FEN "3r1k1r/p3Npb1/1q6/1pp3pp/3n4/P2Q3P/1P3PPB/3RR2K w - - 0 27"]
27. Nf5 Qg6 28. Bc7 Rd7 {This is it - White to play.} 29. Re8+ {Black resigned.} 29... Kxe8 30. Qe4+ Ne6 {Qe6 meets the same reply.} 31. Qa8+ Nd8 32. Qxd8+ Rxd8 33. Rxd8 {Checkmate.}