[Event "US Open-72"]
[Site "Ventura"]
[Date "1971.??.??"]
[Round "10"]
[White "Fritzvold, John D"]
[Black "Erkes, Robert"]
[Result "0-1"]
[ECO "E70"]
[PlyCount "61"]
[EventDate "1971.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 d6 5. Bd3 Nf6 6. Nc3 e6 7. Bg5 h6 8. Bh4 g5 9. Bg3 e5 10. h4 g4 11. h5 Bd7 12. Be2 Qa5 13. Qd2 Na6 14. f4 gxf3 15. Nxf3 0-0-0 16. Nh4 Rhg8 17. 0-0 Bf8 18. Rxf6 Rxg3 19. Rxf7 Re8 20. Ng6 Qd8 21. Raf1 Be7 22. Qxh6 Bg5 23. Qh7 Be3+ 24. Kh1 Qg5 25. Bf3 Bh3 26. Ne7+ Rxe7 27. Qh8+ Kd7 28. Rxe7+ Kxe7 29. Qh7+ Kd8 30. Qh8+ Kc7 31. Nb5+ 0-1

[Event "US Open-72"]
[Site "Ventura"]
[Date "1971.??.??"]
[Round "6"]
[White "Fritzvold, John D"]
[Black "Jones, Charles"]
[Result "0-1"]
[ECO "D09"]
[PlyCount "40"]
[EventDate "1971.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 f6 6. exf6 Nxf6 7. Bg2 Bc5 8. a3 a5 9. Qc2 0-0 10. 0-0 Bg4 11. Rd1 Qe8 12. Bf4 Ne4 13. Nxd4 Nxd4 14. Qxe4 Nxe2+ 15. Kh1 Qxe4 16. Bxe4 Nxf4 17. f3 Nh3 18. Kg2 Nf2 19. Bd5+ Kh8 20. Rd2 Bh3+ 0-1

