[Event "Vienna, 1961"] [White "Enrico Paoli"] [Black "Miroslav Filip"] [FEN "8/4k3/1p2p1p1/pP1pPnP1/P1rPq2p/1KP2R1N/8/5Q2 b - - 0 1"] %Hidden=1 1... Nxd4+ 2. Ka3 Rxa4+ 3. Kxa4 Qc2+ 4. Ka3 Qb3#