[Event "USA-ch"]
[Site "New York"]
[Date "1963.12.21"]
[Round "5"]
[White "Byrne, Donald"]
[Black "Mednis, Edmar John"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. cxd5 exd5 5. d4 c6 6. Bg5 Be7 7. Qc2 O-O 8. e3 Nbd7 9. Bd3 Re8 10. h3 Nf8 11. O-O g6 12. Ne5 N6d7 13. Bxe7 Qxe7 14. Nxd7 Bxd7 15. b4 a6 16. Na4 Ne6 17. Nb6 Rab8 18. Rab1 Ng5 19. Nxd7 Qxd7 20. a4 Rbc8 21. Rfc1 f5 22. Qb2 Qd6 23. b5 axb5 24. axb5 f4 25. bxc6 bxc6 26. exf4 Qxf4 27. Ba6 Rc7 28. Re1 Rf8 29. Re3 Rcf7 30. Rf1 Ne4 31. Rf3 Qb8 32. Qxb8 Rxb8 33. Re3 Rb4 34. f3 Ng3 35. Rc1 Rc7 36. Rec3 Rxd4 37. Rxc6 Rxc6 38. Rxc6 Rd2 39. Rc7 Nf5 40. Rd7 Ne3 41. g4 Rg2+ 42. Kh1 Rg3 43. Kh2 1/2-1/2