[Event "Interzonal-11a"]
[Site "Riga"]
[Date "1979.09.05"]
[Round "1"]
[White "Gruenfeld, Yehuda"]
[Black "Adorjan, Andras"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2525"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Nxe7 Qxe7 12. Bd3 O-O 13. O-O h6 14. Bh4 Bb7 15. c3 Qe6 1/2-1/2