[Event "Reggio Emilia-25 1982/83"]
[Site "Reggio Emilia"]
[Date "1983.01.02"]
[Round "6"]
[White "Koch, Robert"]
[Black "Wiedenkeller, Michael"]
[Result "0-1"]
[BlackElo "2385"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. d4 e4 5. Ng1 Bb4 6. Nh3 Nf6 7. Nf4 O-O 8. e3 Bxc3+ 9. bxc3 d6 10. h4 b6 11. Ba3 Re8 12. c5 d5 13. Bb5 Bb7 14. Qa4 Qd7 15. Be2 Qf7 16. h5 Na5 17. Bb4 Bc6 18. Qc2 Nc4 19. a4 a5 20. Bxc4 dxc4 21. Ba3 b5 22. axb5 Bxb5 23. Rb1 Bc6 24. Kd2 Ng4 25. Ke2 g5 26. hxg6 hxg6 27. d5 Bxd5 28. Qd2 Rad8 29. Qd4 Ne5 30. Rbd1 c6 31. Rh6 Qg7 32. Rdh1 Bf7 33. Bb2 Rxd4 34. cxd4 Ng4 35. Rh8+ Qxh8 36. Rxh8+ Kxh8 37. d5+ Kg8 0-1