[Event "Olympiad-26"]
[Site "Thessaloniki"]
[Date "1984.12.02"]
[Round "13"]
[White "Ruefenacht, Matthias"]
[Black "Rocha, Antonio Cavilhas"]
[Result "1/2-1/2"]
[WhiteElo "2275"]
[BlackElo "2340"]
1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Be2 Nf6 7. O-O Be7 8. Be3 d6 9. f4 O-O 10. Qe1 Nbd7 11. Qg3 Kh8 12. Nf3 e5 13. fxe5 dxe5 14. Nh4 Nc5 15. Nf5 Bxf5 16. Rxf5 Ncxe4 17. Nxe4 Nxe4 18. Qxe5 Qxc2 19. Qxe7 Rfe8 20. Qa3 Qxe2 21. Rxf7 Nd6 22. Qxd6 Qxe3+ 1/2-1/2