[Event "Start Analysis Engine to see Solution #4248 Chess: 5334 Problems, Combination"] [Site "Cleanchess.com"] [Date "2017.07.01"] [Round "0"] [White "Mate in three"] [Black "Black to move"] [FEN "2r3k1/4qpPp/p7/3p1pPQ/5P2/r1P4R/2P5/1K1R4 b - - 0 1"] 1... Ra1+ 2. Kxa1 (2. Kb2 Qa3#) 2... Qa3+ 3. Kb1 Rb8# *