Mate in two vs White to move

Start Analysis Engine to see Solution No. 2863 Tactic: Chess, Combination | Cleanchess.com | 1 Jul 2017

1012849

[Event "Start Analysis Engine to see Solution No. 2863 Tactic: Chess, Combination"] [Site "Cleanchess.com"] [Date "2017.07.01"] [Round "0"] [White "Mate in two"] [Black "White to move"] [FEN "7Q/k2N4/1r6/1p6/1N6/1K6/8/8 w - - 0 1"] 1.Qd8 Kb7 ( 1...Ra6 ) ( 1...Rb7 ) *

http://chessmicrobase.com/microbases/11080/games/1012849?token=4ukson1f