[Event "Porz op"]
[Site "Cologne"]
[Date "1994.??.??"]
[Round "9"]
[White "Keisner, Stephan"]
[Black "Birkhahn, Martin"]
[Result "0-1"]
[ECO "A12"]
[PlyCount "56"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 c6 2. b3 d5 3. e3 Bf5 4. Bb2 e6 5. Nf3 Nf6 6. Be2 Nbd7 7. 0-0 Bd6 8. d3 h6 9. Nbd2 0-0 10. d4 Ne4 11. Ne5 Ndf6 12. f3 Nxd2 13. Qxd2 Qe7 14. Bd3 Bxd3 15. Nxd3 Rad8 16. c5 Bb8 17. Nf2 Nd7 18. f4 f6 19. Nd3 e5 20. fxe5 fxe5 21. Rxf8+ Rxf8 22. Re1 Qg5 23. Re2 e4 24. Nf2 Nf6 25. Qe1 Ng4 26. Nxg4 Qxg4 27. Rf2 Rxf2 28. Qxf2 Qd1+ 0-1

