Mate in three vs Black to move

Start Analysis Engine to see Solution #4256 Chess: 5334 Problems, Combination | Cleanchess.com | 1 Jul 2017

1014235

[Event "Start Analysis Engine to see Solution #4256 Chess: 5334 Problems, Combination"] [Site "Cleanchess.com"] [Date "2017.07.01"] [Round "0"] [White "Mate in three"] [Black "Black to move"] [FEN "1r4k1/p4p1p/3p2P1/2nPP2P/2N4q/8/BrPR1Q2/K5R1 b - - 0 1"] 1... Rxa2+ 2. Kxa2 Qxc4+ 3. Ka1 Qa4# *

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