Fischer vs Unzicker: Siegen 1970

[Event "Siegen ol (Men) fin-A"][Site "Siegen FRG"][Date "1970.09.21"][Round "7"][White "Robert James Fischer"][Black "Wolfgang Unzicker"][Result "1-0"][ECO "C69"][PlyCount "83"][EventDate "1970.??.??"]   1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 exd4 7. Nxd4 Ne7 8.  Be3 Ng6 9. Nd2 Bd6 10. Nc4 O-O 11. Qd3 Ne5 12. Nxe5 Bxe5 13. f4 Bd6 14. f5 Qe7  15. Bf4 Bxf4 16. Rxf4 Bd7 17. Re1 Qc5 18. c3 Rae8 19. g4 Qd6 20. Qg3 Re7 21.  Nf3 c5 22. e5 fxe5 23. Rfe4 Bc6 24. Rxe5 Rfe8 25. Rxe7 Rxe7 26. Ne5 h6 27. h4  Bd7 28. Qf4 Qf6 29. Re2 Bc8 30. Qc4+ Kh7 31. Ng6 Rxe2 32. Qxe2 Bd7 33. Qe7 Qxe7  34. Nxe7 g5 35. hxg5 hxg5 36. Nd5 Bc6 37. Nxc7 Bf3 38. Ne8 Kh6 39. Nf6 Kg7 40.  Kf2 Bd1 41. Nd7 c4 42. Kg3 1-0