[Event "Interzonal-11a"]
[Site "Riga"]
[Date "1979.09.07"]
[Round "3"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Gruenfeld, Yehuda"]
[Result "1-0"]
[WhiteElo "2390"]
[BlackElo "2430"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qf3 h6 8. Bxf6 Qxf6 9. Qxf6 gxf6 10. f4 b5 11. f5 Bd7 12. a4 b4 13. Na2 e5 14. Nf3 d5 15. exd5 Bxf5 16. c3 bxc3 17. Nxc3 Bc5 18. Nh4 Bh7 19. Rd1 f5 20. Bd3 e4 21. Bc2 Be7 22. g3 Bxh4 23. gxh4 Nd7 24. a5 Rb8 25. Ba4 Rxb2 26. d6 Kd8 27. Bxd7 Kxd7 28. Na4 Rb5 29. Nb6+ Ke6 30. d7 Rd8 31. O-O Rxa5 32. Rc1 Rb5 33. Rc6+ Ke7 34. Rd1 Bg6 35. Nc8+ Kf8 36. Na7 Bh5 37. Rc8 Bxd1 38. Nc6 Rd5 39. Rxd8+ Kg7 40. Rg8+ 1-0