[Event "Reggio Emilia-25 1982/83"]
[Site "Reggio Emilia"]
[Date "1982.12.30"]
[Round "4"]
[White "Bertok, Mario"]
[Black "Messa, Roberto"]
[Result "1/2-1/2"]
[WhiteElo "2375"]
[BlackElo "2350"]

1. c4 g6 2. d4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Be3 e5 6. Nge2 Nh6 7. f3 f5 8. d5 Ne7 9. Qd2 Nf7 10. O-O-O a6 11. Kb1 Bd7 12. Nc1 O-O 13. Nb3 b6 14. Be2 Kh8 15. g4 1/2-1/2