[Event "Interzonal-11a"]
[Site "Riga"]
[Date "1979.09.27"]
[Round "16"]
[White "Gruenfeld, Yehuda"]
[Black "Tarjan, James Edward"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2525"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. Qg3 h6 11. Bh4 g5 12. fxg5 Nh5 13. Qe3 Qc5 14. Kb1 hxg5 15. Bf2 Ne5 16. Qd2 Qc7 17. Nf3 Rg8 18. h4 gxh4 19. Bxh4 Nf6 20. Nxe5 dxe5 21. Be2 Rg6 22. Bxf6 Bxf6 23. Rh7 Rg8 24. Bh5 Rf8 25. Rf1 Qe7 26. Qf2 Bg5 27. Bxf7+ Kd8 28. Qb6+ Qc7 29. Qxc7+ Kxc7 30. Bh5+ Bd7 31. Rd1 Rad8 32. Bg4 Kc6 33. a3 Bc8 34. Rxd8 Rxd8 35. Rg7 Bf6 36. Rg6 Rf8 37. Ne2 Kc5 38. Ng3 Kd4 39. Nh5 Bd8 40. Ng7 1-0