[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.10.26"]
[Round "2"]
[White "Sigurjonsson, Gudmundur"]
[Black "Matsumoto, Yasuji"]
[Result "1-0"]
[WhiteElo "2500"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. Bd2 b6 6. Nf3 Ne7 7. h4 Ba6 8. Bxa6 Nxa6 9. h5 h6 10. Qe2 Nb8 11. O-O-O c5 12. Nb5 c4 13. Bxb4 Qxb5 14. Bxe7 Kxe7 15. Nh4 Qa4 16. Rh3 Nc6 17. Ra3 Qb5 18. f4 Nb4 19. f5 Rhc8 20. Kb1 a6 21. fxe6 fxe6 22. Rf1 c3 23. Ng6+ Kd7 24. Rf7+ Ke8 25. Rf8+ Kd7 26. Qxb5+ 1-0