[Event "Interzonal-11a"]
[Site "Riga"]
[Date "1979.09.11"]
[Round "6"]
[White "Adorjan, Andras"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]
[WhiteElo "2525"]
[BlackElo "2625"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e6 6. Nge2 Nge7 7. O-O O-O 8. d4 cxd4 9. Nxd4 d5 10. cxd5 Nxd5 11. Nxd5 Nxd4 1/2-1/2