[Event "USA-ch"]
[Site "New York"]
[Date "1963.12.19"]
[Round "4"]
[White "Mednis, Edmar John"]
[Black "Addison, William G"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Qe2 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 Bd7 13. Kh2 g6 14. Rg1 Kg7 15. Nbd2 c4 16. Nf1 h5 17. Kh1 Rh8 18. N3h2 h4 19. f4 exf4 20. Bxf4 Nh5 21. Qf3 Nxf4 22. Qxf4 Bf6 23. Ne3 Be5 24. Qf3 Qd8 25. Rgf1 Rf8 26. Neg4 Bxg4 27. Nxg4 Qg5 28. a4 f6 29. Qf2 Nb7 30. Nxe5 Qxe5 31. Qxh4 Nc5 32. Qg3 Qg5 33. Qxg5 fxg5 34. Rxf8 Rxf8 35. axb5 axb5 36. Kg1 Rb8 37. Kf2 Kf6 38. Ke3 Ke5 39. Ra7 b4 40. Re7+ Kf6 41. Ra7 Ke5 42. Re7+ 1/2-1/2