[Event "USA-ch"]
[Site "New York"]
[Date "1963.12.19"]
[Round "4"]
[White "Benko, Pal C"]
[Black "Byrne, Donald"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. Nf3 Nb6 7. O-O Nc6 8. e3 O-O 9. Nc3 Be6 10. b3 Qc8 11. Ba3 Bh3 12. Rc1 Bxg2 13. Kxg2 Rd8 14. Qe2 Qf5 15. Rfd1 Qa5 16. Nb1 Qh5 17. h3 f5 18. Rc5 e5 19. dxe5 Bxe5 20. Rc2 Bf6 21. Rxd8+ Rxd8 22. Rd2 Qh6 23. Rxd8+ Bxd8 24. Nbd2 Qg7 25. Nc4 Be7 26. Bb2 Bf6 27. Nxb6 cxb6 28. Qc4+ Kh8 29. Bxf6 Qxf6 30. Nd4 h6 31. Qe6 Qxe6 32. Nxe6 Nb4 33. a3 Nc2 34. a4 Ne1+ 35. Kf1 Nd3 36. Nd4 Kg7 37. Ke2 Nc5 38. f3 Kf6 39. Kd2 a6 40. Kc3 Ke5 41. Kc4 Nd7 42. Ne2 Kd6 43. f4 Nc5 44. Nc3 h5 45. Ne2 Ne4 46. b4 Nf2 47. Ng1 Ne4 48. Nf3 Ke6 49. Nd4+ Kd6 50. Ne2 Nf2 51. h4 Ne4 52. Kd4 Ke6 53. Kc4 Kd6 54. Kd4 Ke6 55. Kc4 Kd6 56. Nd4 Nxg3 57. Nf3 Nf1 58. Kd4 a5 59. b5 Ke6 60. Ng5+ Ke7 61. Nf3 Ke6 1/2-1/2