[Event "Hoogovens"] [Site "Wijk aan Zee"] [Date "1972.01.29"] [Round "15"] [White "Hartoch, Robert G"] [Black "Portisch, Lajos"] [Result "1/2-1/2"] 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 Nc6 7. Ne5 dxc4 8. Nxc6 1/2-1/2