[Event "Zagreb, 1955"] [White "Vasily Smyslov"] [Black "Mario Bertok"] [FEN "r7/1p3Q2/2kpr2p/p1p2Rp1/P3Pp2/1P3P2/1B2q1PP/3R3K w - - 1 0"] %Hidden=1 1. Rxc5+ Kb6 2. Qc7+ Ka7 3. Rxa5+ Qa6 4. Bd4#