[Event "Bundesliga 8687"]
[Site "Germany"]
[Date "1986.??.??"]
[Round "0(1)"]
[White "Gruen, Gerd Peter"]
[Black "Nunn, John DM"]
[Result "1/2-1/2"]
[EventArchiveKey "bundesliga-1986-87"]
[WhiteElo "2410"]
[BlackElo "2590"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 Nc6 6. O-O a6 7. Nc3 Rb8 8. d5 Na5 9. c5 e6 10. e4 b6 11. cxb6 Rxb6 12. Qa4 Nb7 13. Be3 Rxb2 14. Qa3 Rb6 15. Bxb6 cxb6 16. Rab1 Qc7 17. e5 Nxd5 18. Nxd5 exd5 19. Qxa6 d6 20. exd6 Nxd6 21. Qxb6 Qd7 22. Rfd1 Nc4 23. Qb5 Qa7 24. Nd2 Bg4 25. Nf3 Bf5 26. Rb4 Qxa2 27. Qxd5 Be6 28. Qb7 Bc3 1/2-1/2