[Event "Reykjavik, 1988"] [White "John Nunn"] [Black "Lajos Portisch"] [FEN "6rk/2p2p1p/p2q1p1Q/2p1pP2/1nP1R3/1P5P/P5P1/2B3K1 w - - 1 0"] %Hidden=1 1. Qxh7+ Kxh7 2. Rh4+ Kg7 3. Bh6+ Kh7 4. Bf8#