[Event "Zuerich"]
[Site "Zuerich"]
[Date "1961.05.30"]
[Round "3"]
[White "Keller, Dieter"]
[Black "Kupper, Josef"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd3 a6 8. O-O-O Bd7 9. f4 Qc7 10. Be2 Be7 11. f5 O-O 12. Rhf1 Rac8 13. Nxc6 Bxc6 14. fxe6 fxe6 15. Qh3 Bd7 16. e5 dxe5 17. Bd3 Rf7 18. Rf3 e4 19. Nxe4 Bb5 20. Bf4 Qc6 21. Nxf6+ gxf6 22. c3 Bxd3 23. Rfxd3 Qc4 24. Bh6 Bf8 25. Qg3+ Kh8 26. Rd8 Rxd8 27. Rxd8 Qf1+ 28. Kc2 Qe2+ 29. Kb3 Qb5+ 30. Kc2 Qe2+ 31. Kb3 Qb5+ 32. Kc2 1/2-1/2