[Event "NED-ch29"]
[Site "Leeuwarden"]
[Date "1974.03.21"]
[Round "4"]
[White "Timman, Jan H"]
[Black "Enklaar, Bert F"]
[Result "1-0"]

1. c4 Nf6 2. Nc3 c5 3. g3 Nc6 4. Bg2 g6 5. a3 Bg7 6. Rb1 a5 7. Nf3 d5 8. cxd5 Nxd5 9. Ng5 e6 10. Nge4 b6 11. Qa4 Qd7 12. Nxd5 exd5 13. Nc3 Bxc3 14. bxc3 Rb8 15. d3 Ba6 16. c4 b5 17. cxb5 Nd4 18. Qxa5 Qg4 19. O-O 1-0