[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.22"]
[Round "8"]
[White "Tringov, Georgi Petrov"]
[Black "Langeweg, Kick"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nb3 e6 8. Be3 Qc7 9. f4 Be7 10. Bd3 a6 11. Qe2 b5 12. g4 Bb7 13. g5 Nd7 14. O-O g6 15. a4 b4 16. Nd1 Bf8 17. c3 Bg7 18. Rc1 Qd8 19. cxb4 Nxb4 20. Nc3 h6 21. gxh6 Rxh6 22. Bb1 Rh3 23. Rcd1 Bf8 24. Bf2 Rc8 25. Rd2 Rh5 26. Qe3 Rc4 27. Qg3 g5 28. Be3 gxf4 29. Bxf4 Rh7 30. Kh1 Rg7 31. Qf3 Qh4 32. Rg2 Rxg2 33. Kxg2 Nc6 34. Bg3 Qh7 35. Kg1 Nce5 36. Qe2 Rc7 37. Nd4 Qg6 38. Nf3 Bg7 39. Kh1 Qh5 40. Qg2 Qg4 41. Nxe5 Nxe5 42. Qf2 Qh3 43. Kg1 Nc4 44. Qa7 Rd7 45. Rf2 Bh6 46. Qb8+ Ke7 47. Qh8 Qh5 1/2-1/2