[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.10.25"]
[Round "1"]
[White "Jakobsen, Ole"]
[Black "Matsumoto, Yasuji"]
[Result "1-0"]
[WhiteElo "2400"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ndf3 Qb6 8. Ne2 cxd4 9. cxd4 f6 10. exf6 Nxf6 11. O-O Bd6 12. a3 O-O 13. Nc3 Bd7 14. Re1 Rac8 15. Bg5 Na5 16. Rb1 Nc4 17. Qe2 Qc7 18. Rbc1 Qb6 19. Rc2 a5 20. Ne5 Bxe5 21. dxe5 Ng4 22. Qxg4 d4 23. Qh5 h6 24. Qg6 1-0