Keres, Paul VS Kupper, Josef 1968.04.??

[Event "Keres Training"]
[Site "Zuerich"]
[Date "1968.04.??"]
[Round "?"]
[White "Keres, Paul"]
[Black "Kupper, Josef"]
[Result "1-0"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. e3 Bg7 5. d4 d6 6. d5 Na5 7. Bd2 Nf6 8. a3 b6 9. b4 Nb7
10. Bd3 O-O 11. O-O e6 12. Rb1 e5 13. h3 cxb4 14. axb4 a5 15. bxa5 bxa5 16. Bc2 Nc5 17.
Bc1 Nfd7 18. Ba3 Ba6 19. Nd2 f5 20. Nb5 Bxb5 21. cxb5 e4 22. f3 exf3 23. Nxf3 Qe7 24. Re1
Bc3 25. Re2 Rae8 26. Nd4 Qe5 27. Ne6 Rf6 28. b6 Rb8 29. Ba4 Qe4 30. Bxc5 Nxc5 31. Nxc5
dxc5 32. b7 Bb4 33. Bc6 c4 34. Qc2 Qxc2 35. Rxc2 c3 36. Re1 Kg7 37. g3 Rf7 38. e4 fxe4 39.
Rxe4 Rbf8 40. Kg2 Bc5 41. Rc4 Ba7 42. h4 Rf2+ 43. Rxf2 Rxf2+ 44. Kh3 Rd2 45. Rxc3 a4 46.
Bxa4 Rxd5 47. Rc8 Rd4 48. Bc6 1-0