[Event "Start Analysis Engine to see Solution #4227 Chess: 5334 Problems, Combination"] [Site "Cleanchess.com"] [Date "2017.07.01"] [Round "0"] [White "Mate in three"] [Black "Black to move"] [FEN "2b3k1/1ppP2p1/1r5p/4pp2/q1P1p2P/1p2P3/1P1RBPP1/rNKQ3R b - - 0 1"] 1... Rxb1+ 2. Kxb1 Qa2+ 3. Kc1 Qa1# *