[Event "Frankfurt/Oder, 1977"] [White "Thomas Casper"] [Black "Reinhard Postler"] [FEN "r1bq2k1/pp2n1p1/5r2/2p2pNQ/3p4/3P4/PPP2PBP/R3R1K1 w - - 1 0"] %Hidden=1 1. Rxe7 Rg6 2. Qxg6 Qxe7 3. Qh7+ Kf8 4. Qh8#