Mate in three vs Black to move
Start Analysis Engine to see Solution #4172 Chess: 5334 Problems, Combination | Cleanchess.com | 1 Jul 2017
1014151
[Event "Start Analysis Engine to see Solution #4172 Chess: 5334 Problems, Combination"]
[Site "Cleanchess.com"]
[Date "2017.07.01"]
[Round "0"]
[White "Mate in three"]
[Black "Black to move"]
[FEN "r4b2/2k2p2/3p4/2nP4/1R1N4/5r2/PKPQR2P/5q2 b - - 0 1"]
1... Rxa2+ 2. Kxa2 Ra3+ 3. Kxa3 Qa1# *
http://chessmicrobase.com/microbases/11081/games/1014151?token=qt9ptmtb