[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.22"]
[Round "9"]
[White "Walker, John"]
[Black "Erickson, Ronald"]
[Result "1-0"]
[ECO "D12"]
[PlyCount "107"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 c6 3. d4 d5 4. e3 Bf5 5. Nc3 e6 6. Bd3 Bxd3 7. Qxd3 dxc4 8. Qxc4 b5 9. Qb3 a6 10. 0-0 c5 11. Rd1 c4 12. Qc2 Nbd7 13. e4 Nb6 14. d5 exd5 15. a4 b4 16. Nxd5 Nfxd5 17. exd5 a5 18. Be3 Bd6 19. Qe4+ Kf8 20. Bxb6 Qxb6 21. Qxc4 f6 22. Nd4 Kf7 23. Nc6 Rhe8 24. Re1 Bc5 25. d6+ Kf8 26. Rxe8+ Rxe8 27. d7 Qxc6 28. dxe8Q+ Kxe8 29. Qg8+ Kd7 30. Rd1+ Kc7 31. Qxg7+ Kb6 32. Qd7 Qxd7 33. Rxd7 h6 34. b3 Kc6 35. Rh7 Kd5 36. Rxh6 Ke4 37. Rh4+ Kd3 38. Rc4 Bd4 39. Rxd4+ Kxd4 40. h4 Kc3 41. h5 Kxb3 42. h6 Ka2 43. h7 b3 44. h8Q b2 45. Qh7 b1Q+ 46. Qxb1+ Kxb1 47. g4 Kb2 48. f4 Kb3 49. g5 fxg5 50. fxg5 Kxa4 51. g6 Kb4 52. g7 a4 53. g8Q a3 54. Qa2 1-0

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.14"]
[Round "1"]
[White "Erickson, Ronald"]
[Black "Fritzinger, Dennis"]
[Result "0-1"]
[ECO "B49"]
[PlyCount "102"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be3 Qc7 7. Be2 Bb4 8. Qd2 Nf6 9. f3 d5 10. a3 Bxc3 11. Qxc3 dxe4 12. Nxc6 Qxc6 13. Qxc6+ bxc6 14. Bc5 exf3 15. Bxf3 Bb7 16. Rd1 Nd7 17. Bd6 f6 18. c4 Kf7 19. b4 Ra7 20. Bg3 Ba8 21. c5 e5 22. Rd6 a5 23. 0-0 axb4 24. axb4 Rb8 25. Rfd1 Ke7 26. Be1 Rc7 27. Bg4 Nf8 28. Ra1 g6 29. Bh4 g5 30. Be1 Bb7 31. Ra7 Ra8 32. Rxa8 Bxa8 33. Bf3 Bb7 34. Be4 h6 35. h4 Ne6 36. hxg5 hxg5 37. g3 Nd8 38. b5 cxb5 39. Ba5 Rxc5 40. Bxd8+ Kxd6 41. Bxb7 Ke6 42. Kg2 b4 43. Be4 b3 44. Bb6 Rb5 45. Be3 f5 46. Bb1 f4 47. gxf4 gxf4 48. Bd2 Rd5 49. Bc3 Rd1 50. Bh7 b2 51. Bg8+ Kf6 0-1

