[Event "Clare Benedict Cup-13"]
[Site "Brunnen"]
[Date "1966.05.16"]
[Round "4"]
[White "Robatsch, Karl"]
[Black "Penrose, Jonathan"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d4 exd4 7. e5 Ne4 8. Nxd4 O-O 9. Nf5 d5 10. Nxe7+ Nxe7 11. c3 f5 12. exf6 Nxf6 13. Bc2 Bf5 14. Bxf5 Nxf5 15. Nd2 Qd6 16. Nb3 Rae8 17. Nd4 Nxd4 18. cxd4 Re4 19. f3 Re6 20. Re1 Rfe8 21. Rxe6 Rxe6 1/2-1/2