[Event "IBM-19 Grootmeestergroep A"]
[Site "Amsterdam"]
[Date "1979.07.15"]
[Round "4"]
[White "Byrne, Robert Eugene"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]
[WhiteElo "2535"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Be3 c5 7. dxc5 Qa5 8. Bd3 Ng4 9. Bd2 Qxc5 10. Qe2 Nf6 11. Be3 Qa5 12. O-O Bg4 13. Nd1 Nc6 14. c3 e5 15. Nf2 exf4 16. Bxf4 Ne5 17. Bxe5 Bxf3 18. Qxf3 Qxe5 19. Bc4 Rae8 20. Rae1 Qc5 21. Bb3 Re7 22. Kh1 a5 1/2-1/2