[Event "Biel MTO Open"]
[Site "Biel SUI"]
[Date "1990.07.29"]
[EventDate "1990.07.23"]
[Round "6"]
[Result "1/2-1/2"]
[White "Michael Borgstaedt"]
[Black "Juerg Portenier"]
[ECO "C07"]
[WhiteElo "2240"]
[BlackElo "?"]
[PlyCount "40"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 Nf6 6. Bc4 Qd6 7. O-O cxd4 8.  Nb3 Nc6 9. Nbxd4 Nxd4 10. Qxd4 Qxd4 11. Nxd4 Bd7 12. Be2 Bc5 13. Nb3 Bb6 14. a4  a6 15. Bf3 O-O-O 16. Re1 Kb8 17. Bf4+ Bc7 18. Be3 Bc8 19. Bd4 Rhe8 20. Bxf6  1/2-1/2