[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.30"]
[Round "10"]
[White "Brieger, Robert S"]
[Black "Simpson, Ron"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "57"]
[EventDate "1959.07.20"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Bc5 6. e5 Ng4 7. Bg5 f6 8. exf6 gxf6 9. Re1+ Kf8 10. Bh4 d6 11. Nbd2 Bf5 12. Nb3 Kg7 13. h3 Nh6 14. Nfxd4 Bxd4 15. Nxd4 Nxd4 16. Qxd4 Rf8 17. g4 Bg6 18. g5 Nf5 19. gxf6+ Kh8 20. Qc3 Bf7 21. Re7 d5 22. Rd1 d4 23. Qd3 Bg6 24. Bg5 h6 25. Bxh6 Rxf6 26. Qxf5 Qxe7 27. Qg5 Kh7 28. Qh4 Rh8 29. Bf8+ 1-0

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.28"]
[Round "8"]
[White "Wright, Matthew"]
[Black "Simpson, Ron"]
[Result "1-0"]
[ECO "A02"]
[PlyCount "35"]
[EventDate "1959.07.20"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 Nc6 6. d4 g4 7. Nh4 Qf6 8. c3 Nge7 9. Nd2 Qe6 10. e4 f5 11. Bc4 Qf6 12. 0-0 Bd7 13. exf5 Nxd4 14. Ne4 Nf3+ 15. Nxf3 Qxf5 16. Nxd6+ cxd6 17. Nd4 Qc5 18. Bf7+ 1-0

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.24"]
[Round "5"]
[White "Simpson, Ron"]
[Black "Sprague, Ross Frederick"]
[Result "0-1"]
[ECO "A51"]
[PlyCount "34"]
[EventDate "1959.07.20"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 d6 5. exd6 Bxd6 6. Nf3 Nxf2 7. Qd4 Nxh1 8. Qxg7 Rf8 9. Qxh7 Bc5 10. e3 Qe7 11. Qd3 Bg4 12. Nbd2 Bxe3 13. Qe4 Bxd2+ 14. Nxd2 Qxe4+ 15. Nxe4 f5 16. Ng5 Nc6 17. Bf4 0-0-0 0-1

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.21"]
[Round "2"]
[White "Henin, Charles"]
[Black "Simpson, Ron"]
[Result "1-0"]
[ECO "E86"]
[PlyCount "36"]
[EventDate "1959.07.20"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. Nge2 c6 8. Qd2 Nbd7 9. 0-0-0 a6 10. Kb1 Qa5 11. Nc1 Rb8 12. Be2 b5 13. Nd5 Qxd2 14. Nxf6+ Nxf6 15. Rxd2 Be6 16. cxb5 cxb5 17. Rhd1 Rfd8 18. dxe5 Ne8 1-0

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.16"]
[Round "11"]
[White "Colon Romero, Arturo"]
[Black "Simpson, Ron"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "62"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 Bg4 7. Be2 e6 8. c5 Be7 9. a3 Ne4 10. 0-0 0-0 11. Na4 e5 12. Nxe5 Bxe2 13. Qxe2 Nxd4 14. Qd1 Ne6 15. b4 Bf6 16. Bb2 b5 17. cxb6 axb6 18. f3 Nd6 19. Rc1 Bxe5 20. Bxe5 Nc4 21. Re1 Nxe5 22. Rxe5 d4 23. Qb3 d3 24. Rd5 Qe8 25. Nxb6 Nf4 26. Kf2 Nxd5 27. Nxd5 Qe2+ 28. Kg3 d2 29. Rd1 Rxa3 30. Qc2 Qe5+ 31. Nf4 Qg5+ 0-1

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.14"]
[Round "9"]
[White "Simpson, Ron"]
[Black "Bain, Osias"]
[Result "0-1"]
[ECO "D70"]
[PlyCount "40"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d5 3. cxd5 Nxd5 4. d4 g6 5. e4 Nb6 6. Nc3 Bg7 7. Be3 c6 8. Be2 Be6 9. b3 0-0 10. 0-0 N8d7 11. Ng5 Re8 12. Nxe6 fxe6 13. a4 Nf8 14. a5 c5 15. axb6 cxd4 16. Bb5 dxe3 17. Bxe8 Bxc3 18. Qxd8 Rxd8 19. bxa7 Bxa1 20. Rxa1 e2 0-1

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.13"]
[Round "8"]
[White "McCormick, Edgar Thomas"]
[Black "Simpson, Ron"]
[Result "1-0"]
[ECO "C05"]
[PlyCount "51"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Ngf3 c5 6. c3 b6 7. Bd3 Ba6 8. Qe2 Bxd3 9. Qxd3 Nc6 10. 0-0 Be7 11. Re1 Rc8 12. a3 0-0 13. b4 cxd4 14. cxd4 Qc7 15. Nf1 Bxb4 16. Ng5 g6 17. axb4 Nxb4 18. Qh3 h5 19. Ba3 Nc2 20. Rac1 Qd8 21. Nxe6 fxe6 22. Qxe6+ Kh7 23. Bxf8 Nxf8 24. Qf7+ Kh8 25. Rxc2 Rxc2 26. e6 1-0

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.12"]
[Round "7"]
[White "Simpson, Ron"]
[Black "Le Cornu, Phillip"]
[Result "1-0"]
[ECO "E68"]
[PlyCount "77"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d6 4. g3 Bg7 5. d4 Nbd7 6. Bg2 0-0 7. e4 e5 8. 0-0 Re8 9. d5 a5 10. b3 Nh5 11. Bb2 Nc5 12. Ne1 Bd7 13. a3 Qc8 14. b4 axb4 15. axb4 Na6 16. Nd3 Bh3 17. c5 Bxg2 18. Kxg2 f5 19. f3 Nf6 20. Qe2 Bf8 21. Ba3 c6 22. cxd6 Bxd6 23. b5 Bxa3 24. Rxa3 cxb5 25. Nxb5 Qd7 26. Rb3 Nxd5 27. exd5 e4 28. Nf4 Nc5 29. Rbb1 g5 30. Nh5 exf3+ 31. Qxf3 Ra2+ 32. Kg1 g4 33. Qf4 Ree2 34. Rf2 Qe7 35. Qb8+ Kf7 36. Rxf5+ Kg6 37. Nf4+ Kxf5 38. Nxe2 Qxe2 39. Nd4+ 1-0

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.10"]
[Round "6"]
[White "Caroe, E."]
[Black "Simpson, Ron"]
[Result "0-1"]
[ECO "D73"]
[PlyCount "68"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. Nf3 Bg7 7. Nc3 0-0 8. b3 Ne4 9. Bb2 Qa5 10. Rc1 Nc6 11. 0-0 Bf5 12. e3 Nxc3 13. Bxc3 Qa6 14. Qd2 Be4 15. Rfd1 Rac8 16. Ne1 Bxg2 17. Kxg2 Rc7 18. Nd3 b6 19. a4 Rfc8 20. Nb4 Qb7 21. Nxc6 Rxc6 22. Bb2 e5 23. Rxc6 Rxc6 24. dxe5 d4 25. e4 Bxe5 26. f4 Bg7 27. Kf1 Re6 28. Re1 Rxe4 29. Kf2 Qd5 30. Rxe4 Qxe4 31. Ba3 d3 32. Bb2 Bf8 33. g4 Bc5+ 34. Kg3 Qe3+ 0-1

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.07"]
[Round "3"]
[White "Ulvestad, Olaf"]
[Black "Simpson, Ron"]
[Result "1-0"]
[ECO "E60"]
[PlyCount "75"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. d5 d6 5. Nc3 e6 6. Bg2 Bg7 7. e4 0-0 8. Nge2 exd5 9. cxd5 c5 10. 0-0 b6 11. e5 Ne8 12. e6 Na6 13. Nf4 Nac7 14. Re1 Be5 15. Nd3 f6 16. Nxe5 fxe5 17. f4 e4 18. Nxe4 Qe7 19. b3 Bb7 20. Nc3 Nf6 21. a4 a6 22. Rb1 b5 23. axb5 axb5 24. b4 c4 25. Bf3 h6 26. Qd4 Kh7 27. Bb2 Rac8 28. Re3 Nfe8 29. Rf1 Ng7 30. g4 Nge8 31. f5 gxf5 32. gxf5 Nf6 33. Qh4 Qg7+ 34. Bg2 Rg8 35. Rg3 Qe7 36. Ne4 Ncxd5 37. Bxf6 Rxg3 38. hxg3 1-0

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.06"]
[Round "2"]
[White "Simpson, Ron"]
[Black "Santasiere, Anthony Edward"]
[Result "0-1"]
[ECO "D97"]
[PlyCount "40"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 0-0 7. Bf4 c6 8. e4 b5 9. Qd3 Qa5 10. Nd2 Be6 11. Qc2 Rd8 12. d5 cxd5 13. Nxb5 Na6 14. Nd4 Nb4 15. Qc7 Qxc7 16. Bxc7 Rdc8 17. Ba5 Rab8 18. Be2 Nxe4 19. Nxe6 Nc2+ 20. Kd1 Nxf2+ 0-1

[Event "US Open-49"]
[Site "Baltimore"]
[Date "1948.07.05"]
[Round "1"]
[White "Schmidt, R."]
[Black "Simpson, Ron"]
[Result "0-1"]
[ECO "B44"]
[PlyCount "48"]
[EventDate "1948.07.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. c4 c5 3. Nc3 Nc6 4. Nge2 Nf6 5. d4 cxd4 6. Nxd4 Bb4 7. f3 d5 8. cxd5 exd5 9. Bb5 0-0 10. Nxc6 bxc6 11. Bxc6 Nxe4 12. fxe4 Qh4+ 13. Kf1 Qf6+ 14. Qf3 Qxc6 15. exd5 Ba6+ 16. Kf2 Qg6 17. Re1 Rfe8 18. Be3 Qc2+ 19. Kg1 Qxb2 20. Bd4 Rac8 21. Qg3 g6 22. Rxe8+ Rxe8 23. Nb5 Bc5 24. Rf1 Bxd4+ 0-1

