[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "3"]
[White "Isaacs, Lewis Jl"]
[Black "McClain, G."]
[Result "0-1"]
[ECO "C02"]
[PlyCount "90"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Nge7 7. 0-0 Nf5 8. b3 cxd4 9. cxd4 Nfxd4 10. Be3 Nxe2+ 11. Qxe2 Bc5 12. Bd2 Bd7 13. Nc3 Nd4 14. Nxd4 Bxd4 15. Rfe1 0-0 16. Rac1 f6 17. exf6 Rxf6 18. Be3 Raf8 19. Qd3 Bxe3 20. fxe3 Bc6 21. Qd4 Qd8 22. Qxa7 Rf2 23. e4 Qg5 24. Qxf2 Rxf2 25. Kxf2 d4 26. Nb1 Bxe4 27. g3 Bc6 28. h4 Qf5+ 29. Kg1 Qf3 30. Rxc6 Qxg3+ 31. Kf1 bxc6 32. Nd2 d3 33. Re4 Qh2 34. Ke1 Qg1+ 35. Nf1 d2+ 36. Kxd2 Qxf1 37. a4 Qg2+ 38. Kd3 Qf3+ 39. Re3 Qd5+ 40. Kc3 e5 41. Rd3 Qc5+ 42. Kb2 e4 43. Rc3 Qf2+ 44. Ka3 e3 45. Rxc6 e2 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "6"]
[White "Long, R."]
[Black "McClain, G."]
[Result "1/2-1/2"]
[ECO "C05"]
[PlyCount "54"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Ngf3 c5 6. c3 Nc6 7. Be2 Qb6 8. Nb3 cxd4 9. cxd4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 0-0 12. 0-0 f6 13. exf6 Nxf6 14. Bd3 Bd7 15. Rfe1 Rae8 16. Ne5 Nxe5 17. Rxe5 Ng4 18. Re2 Qd6 19. g3 e5 20. dxe5 Nxe5 21. Be4 Nf3+ 22. Bxf3 Rxf3 23. Rxe8+ Bxe8 24. Nd4 Rf8 25. Rd1 a6 26. Ne2 Bh5 27. Re1 Re8 1/2-1/2

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "2"]
[White "McClain, G."]
[Black "Fischheimer, Daniel"]
[Result "0-1"]
[ECO "E33"]
[PlyCount "88"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. Bg5 0-0 7. e3 Re8 8. Bd3 h6 9. Bh4 e5 10. dxe5 Nxe5 11. Nxe5 Rxe5 12. 0-0 dxc4 13. Bxc4 Bd6 14. Qg6 Be6 15. Bxf6 Qxf6 16. Qxf6 gxf6 17. Bxe6 fxe6 18. Rfd1 Kf7 19. Rd4 Ke7 20. Rad1 a6 21. g3 Rd8 22. Ne4 Rb5 23. Nxd6 Rxd6 24. Rxd6 cxd6 25. Rd2 d5 26. Kg2 e5 27. f4 Kd6 28. Kf3 Kc5 29. Rc2+ Kb4 30. g4 Ra5 31. b3 Ka3 32. h4 Rb5 33. g5 fxg5 34. hxg5 hxg5 35. fxe5 Rb4 36. Rg2 Re4 37. Rxg5 Kxa2 38. Rg7 b5 39. b4 Kb3 40. Rg6 Rxe5 41. Rg4 Ka4 42. Ke2 Re4 43. Rg5 d4 44. Kd3 Rxe3+ 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "12"]
[White "McClain, G."]
[Black "Fuster, Geza"]
[Result "0-1"]
[ECO "D22"]
[PlyCount "44"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 Bg4 5. Bxc4 e6 6. Nc3 Nf6 7. h3 Bh5 8. g4 Bg6 9. Ne5 Nbd7 10. Nxg6 hxg6 11. Qf3 Rb8 12. e4 Nb6 13. Bb3 Qxd4 14. Be3 Qb4 15. Rd1 c5 16. Bf4 Rc8 17. e5 Nfd7 18. Qxb7 Qxf4 19. Rxd7 Qxe5+ 20. Kf1 Rb8 21. Rd5 exd5 22. Qc6+ Kd8 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "10"]
[White "McClain, G."]
[Black "Gill, EH."]
[Result "1-0"]
[ECO "D52"]
[PlyCount "69"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. e3 Nbd7 6. Nf3 Bb4 7. Qc2 Qa5 8. Nd2 Ne4 9. Ndxe4 dxe4 10. Bh4 0-0 11. Be2 g5 12. Bg3 f5 13. f4 exf3 14. Bxf3 e5 15. 0-0 exd4 16. exd4 Bxc3 17. bxc3 f4 18. Bf2 Nf6 19. d5 g4 20. Be2 cxd5 21. cxd5 Qxd5 22. Rad1 Qc6 23. Bd4 Ne4 24. Bd3 Ng5 25. Rde1 Be6 26. Bxh7+ Kf7 27. Qg6+ Ke7 28. Qxg5+ Kd7 29. Rd1 Rf7 30. Bg6 Rg8 31. Bg7+ Kc8 32. Bxf7 Bxf7 33. Qe7 Bxa2 34. Rxf4 Qb6+ 35. Kh1 1-0

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "8"]
[White "McClain, G."]
[Black "Nowak, John"]
[Result "1-0"]
[ECO "D08"]
[PlyCount "87"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 f6 6. exf6 Qxf6 7. g3 Bf5 8. a3 a5 9. Qa4 Bd7 10. Bg2 Be7 11. 0-0 Qg6 12. Qb5 Rb8 13. Nb3 d3 14. exd3 Nd4 15. Qxd7+ Kxd7 16. Ne5+ Ke8 17. Nxg6 Nxb3 18. Nxh8 Nxa1 19. Bf4 Nb3 20. Bxc7 Rc8 21. Be5 Bf6 22. Bxb7 Rd8 23. Re1 Kf8 24. Bc7 Rxd3 25. Be4 Rd2 26. Bxh7 g5 27. Be5 Kg7 28. Bxg8 Bxe5 29. Rxe5 Kxg8 30. Ng6 g4 31. Rg5 Rxb2 32. Rb5 a4 33. Rb4 Re2 34. Rxa4 Nd4 35. c5 Rd2 36. Ne5 Kg7 37. Kg2 Kf6 38. Nxg4+ Kg5 39. Ne3 Nc6 40. h4+ Kh5 41. Ra6 Ne5 42. c6 Nd3 43. c7 Rxf2+ 44. Kh3 1-0

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "4"]
[White "McClain, G."]
[Black "Palmer, Marvin"]
[Result "0-1"]
[ECO "E33"]
[PlyCount "52"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 6. Bg5 h6 7. Bh4 g5 8. Bg3 g4 9. d5 exd5 10. cxd5 Nxd5 11. Nh4 Qf6 12. Rc1 Be6 13. e3 0-0-0 14. Bb5 Nce7 15. 0-0 Nxc3 16. bxc3 Bc5 17. c4 Rdg8 18. Rb1 h5 19. Ba4 Bb6 20. Rxb6 axb6 21. e4 Nc6 22. Bxc6 bxc6 23. c5 dxc5 24. Rb1 Qd4 25. Rd1 Qc4 26. Qb2 Rd8 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "1"]
[White "Payne, C."]
[Black "McClain, G."]
[Result "0-1"]
[ECO "E61"]
[PlyCount "66"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bf4 0-0 5. e3 d6 6. Nf3 Nc6 7. Be2 Nh5 8. 0-0 Bg4 9. Re1 Nxf4 10. exf4 Bxf3 11. Bxf3 Nxd4 12. Bxb7 Rb8 13. Be4 Rxb2 14. Rb1 Rxb1 15. Qxb1 Ne6 16. f5 gxf5 17. Bxf5 Bxc3 18. Bxh7+ Kg7 19. Re3 Be5 20. Rh3 Rh8 21. Qf5 Bf6 22. Rg3+ Ng5 23. h4 Rxh7 24. hxg5 Be5 25. Rh3 Qh8 26. f4 Rxh3 27. gxh3 Qh7 28. Qg4 Qb1+ 29. Kg2 Qxa2+ 30. Kg3 Qb3+ 31. Kh4 Qxc4 32. fxe5 Qxg4+ 33. Kxg4 a5 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "9"]
[White "Smith, Kenneth Ray"]
[Black "McClain, G."]
[Result "1-0"]
[ECO "C02"]
[PlyCount "97"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Be2 Bb5 7. 0-0 Bxe2 8. Qxe2 Nc6 9. Be3 cxd4 10. cxd4 Nge7 11. Nc3 Nf5 12. Qd3 Nxe3 13. Qxe3 Be7 14. b3 Ba3 15. Rad1 0-0 16. Ng5 h6 17. Nf3 Rfc8 18. g4 Bf8 19. g5 hxg5 20. Nxg5 Be7 21. h4 a6 22. Na4 Qb4 23. Kg2 Bxg5 24. hxg5 Ne7 25. Rh1 Nf5 26. Qh3 Kf8 27. Qd3 Ke7 28. a3 Qa5 29. Rc1 b5 30. Nc3 Rd8 31. b4 Qb6 32. Ne2 Rac8 33. Rc5 Rxc5 34. dxc5 Qc7 35. Nd4 Nxd4 36. Qxd4 Kd7 37. c6+ Qxc6 38. Qa7+ Qc7 39. Qxa6 Qxe5 40. Qxb5+ Ke7 41. Qc5+ Qd6 42. Qd4 e5 43. Re1 f6 44. f4 e4 45. Kg3 Qc6 46. Rh1 Qc4 47. gxf6+ gxf6 48. Rh7+ Ke6 49. Qb6+ 1-0

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "11"]
[White "Thomasson, W."]
[Black "McClain, G."]
[Result "0-1"]
[ECO "C12"]
[PlyCount "82"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 g6 9. Bc1 c5 10. Bd3 Nxc3 11. Nf3 c4 12. Bxg6 fxg6 13. Qxg6+ Kd7 14. Bxh6 Qg8 15. Qxg8 Rxg8 16. g3 Nc6 17. Bd2 Ne4 18. c3 Rf8 19. Ke2 Rxf3 20. Kxf3 Nxd2+ 21. Ke3 Ne4 22. Rac1 b5 23. f3 Nxc3 24. Rxc3 Nb4 25. a3 Nd3 26. h4 a5 27. h5 Ba6 28. h6 Rh8 29. g4 Ke7 30. f4 Kf7 31. f5 exf5 32. gxf5 Bc8 33. f6 Bf5 34. Rc2 Nxe5 35. Rb2 Ng4+ 36. Kf4 Bd7 37. Rg2 Kxf6 38. Rxg4 Bxg4 39. Kxg4 b4 40. axb4 axb4 41. Rh5 b3 0-1

