[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.22"]
[Round "9"]
[White "Schutt, Raymond Wayne"]
[Black "Grombacher, Walter"]
[Result "0-1"]
[ECO "D93"]
[PlyCount "62"]
[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 0-0 6. e3 c5 7. Be2 Nc6 8. 0-0 Bg4 9. Ne5 Bxe2 10. Qxe2 Nh5 11. cxd5 Nxf4 12. exf4 Nxd4 13. Qe4 f6 14. Nf3 f5 15. Qd3 Qd6 16. g3 c4 17. Qd1 Nxf3+ 18. Qxf3 Bxc3 19. bxc3 Rac8 20. Rfe1 Rc5 21. Rad1 Rd8 22. Re5 Rd7 23. Qe2 Qc7 24. h4 Kf8 25. h5 Qd8 26. hxg6 hxg6 27. Qf3 e6 28. Rxe6 Rcxd5 29. Rde1 Rd1 30. Re8+ Qxe8 31. Rxd1 Qe4 0-1

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.19"]
[Round "6"]
[White "Grombacher, Walter"]
[Black "Pupols, Viktors"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "134"]
[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. b4 c6 2. Bb2 Qb6 3. a3 a5 4. c3 Nf6 5. d4 d5 6. Nd2 e5 7. e3 exd4 8. exd4 axb4 9. axb4 Rxa1 10. Qxa1 Bd6 11. Bd3 0-0 12. Ne2 Bg4 13. 0-0 Nbd7 14. f3 Bh5 15. Re1 Qc7 16. Nf1 Nb6 17. Neg3 Bg6 18. Nf5 Ra8 19. Qc1 Nc4 20. Nxd6 Bxd3 21. Nxc4 dxc4 22. Qe3 h6 23. Ng3 Nd5 24. Qd2 Ra2 25. Ra1 Rxa1+ 26. Bxa1 Qe7 27. Kf2 Kh7 28. Bb2 b5 29. Nf1 Qh4+ 30. Kg1 Bxf1 31. Kxf1 Qxh2 32. Bc1 Qh1+ 33. Kf2 Qh4+ 34. Kg1 Qf6 35. Qe2 Qg6 36. Bd2 Qb1+ 37. Kh2 Qd3 38. Qe5 g6 39. Qe8 Kg7 40. Qe5+ Kh7 41. Qe8 Kg7 42. Qe5+ f6 43. Qe1 g5 44. Kg1 Kf7 45. Qc1 Qe2 46. Qc2 Kg7 47. Qc1 Kg6 48. Qb1+ f5 49. Qc1 Kf6 50. f4 g4 51. g3 Kg6 52. Be1 Nf6 53. Qd2 Qd3 54. Qg2 Ne4 55. Kh2 Kf6 56. Kg1 Ke6 57. Qh2 Qe3+ 58. Kf1 Qf3+ 59. Kg1 Qe3+ 60. Kf1 Nxc3 61. Qxh6+ Kd5 62. Bf2 Qe2+ 63. Kg1 Ne4 64. Qh2 Qxf2+ 65. Kh1 Qf1+ 66. Qg1 Qh3+ 67. Qh2 Nxg3+ 0-1

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.16"]
[Round "4"]
[White "Grombacher, Walter"]
[Black "Jackson, Leroy"]
[Result "0-1"]
[ECO "C29"]
[PlyCount "88"]
[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 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Qh4+ 6. g3 Nxg3 7. Nf3 Qh5 8. Nxd5 Nxh1 9. Nxc7+ Kd8 10. Nxa8 Bg4 11. Bg2 Bxf3 12. Qxf3 Qxe5+ 13. Kf1 Bd6 14. Bxh1 Nc6 15. c3 Re8 16. Bd2 Qxh2 17. Qg2 Qxg2+ 18. Bxg2 Kc8 19. a4 Na5 20. Re1 Rxe1+ 21. Kxe1 Kb8 22. Nb6 axb6 23. Be3 Kc7 24. Ke2 Nc6 25. d4 h6 26. Bd5 f5 27. Kf3 g5 28. Bf7 Kd7 29. b4 Ke7 30. Bg6 Kf6 31. Be8 Ne7 32. Bd2 g4+ 33. Kf2 f4 34. c4 Ke6 35. Bh5 Kf5 36. Be8 Ke4 37. c5 Bc7 38. Bc3 g3+ 39. Kg1 f3 40. a5 Bf4 41. Be1 Be3+ 42. Bf2 Bxf2+ 43. Kf1 Ke3 44. Bd7 g2# 0-1

[Event "Illinois op"]
[Site "Illinois"]
[Date "1965.??.??"]
[Round "?"]
[White "Sillars, D."]
[Black "Grombacher, Walter"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "61"]
[EventDate "1965.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. c3 Nc6 5. d4 d6 6. exd6 Qxd6 7. dxc5 Qxc5 8. Be2 e5 9. 0-0 Be7 10. b4 Qd6 11. b5 Na5 12. Ba3 Qe6 13. Bxe7 Nxe7 14. Qa4 Qb6 15. Nxe5 0-0 16. Nd2 Qc7 17. Ndf3 b6 18. Rad1 Nb7 19. Bd3 Ng6 20. Nxg6 fxg6 21. Ng5 h6 22. Bxg6 hxg5 23. Rd5 Rf4 24. Qd1 Rh4 25. g3 Rh6 26. Rxg5 Qd6 27. Qe2 Rxg6 28. Qe8+ Kh7 29. Rh5+ Rh6 30. Qe4+ Qg6 31. Rxh6+ 0-1

[Event "US Open-61"]
[Site "Saint Louis"]
[Date "1960.08.12"]
[Round "5"]
[White "Grombacher, Walter"]
[Black "Kocjan, Walter"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "17"]
[EventDate "1960.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 5. d4 Bg4 6. Be2 cxd4 7. cxd4 Bxf3 8. Bxf3 Qxd4 9. Bxc6+ 1-0

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.24"]
[Round "5"]
[White "Grombacher, Walter"]
[Black "Rohland, Marshall"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "54"]
[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. b4 e5 2. Bb2 f6 3. e4 Bxb4 4. Bc4 Ne7 5. f4 d5 6. exd5 exf4 7. Nc3 Bf5 8. Qf3 Bxc3 9. Bxc3 Qd6 10. Bb3 Nd7 11. Ne2 g5 12. d4 Nb6 13. Bd2 Nbxd5 14. g4 Bg6 15. a3 0-0-0 16. c4 Ne3 17. Bb4 Qd7 18. Ra2 h5 19. h3 hxg4 20. hxg4 Rxh1+ 21. Qxh1 Nxg4 22. Bc5 Ne3 23. Bxa7 Qf5 24. Rb2 f3 25. Nc3 Nc6 26. Nb5 Re8 27. Kf2 Ng4+ 0-1

[Event "US Open-59"]
[Site "Rochester"]
[Date "1958.08.07"]
[Round "4"]
[White "Grombacher, Walter"]
[Black "Weinstein, Raymond Allen"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "58"]
[EventDate "1958.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b4 e5 2. Bb2 d6 3. e4 Nf6 4. Nc3 g6 5. Bc4 Bg7 6. d3 0-0 7. Nf3 Bg4 8. 0-0 Nc6 9. a3 Nd4 10. Kh1 c6 11. Nb1 Nxf3 12. gxf3 Bh3 13. Rg1 Nh5 14. d4 Qh4 15. Bf1 exd4 16. Bxd4 Bxd4 17. Qxd4 Bxf1 18. Rxf1 Qh3 19. Nd2 Nf4 20. Rg1 Ne2 21. Qxd6 Rad8 22. Qe7 Rxd2 23. Rg2 Qxf3 24. Qg5 Nf4 25. Rc1 Nxg2 26. Qxg2 Rd1+ 27. Rxd1 Qxd1+ 28. Qg1 Qxg1+ 29. Kxg1 Rd8 0-1

[Event "Canadian op"]
[Site "Winnipeg"]
[Date "1958.??.??"]
[Round "5"]
[White "Zalys, Ignas"]
[Black "Grombacher, Walter"]
[Result "1/2-1/2"]
[ECO "D96"]
[PlyCount "42"]
[EventDate "1958.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. Qb3 c6 7. e4 Nxc3 8. Qxc3 0-0 9. Be3 Nd7 10. Rd1 Nf6 11. Bd3 Bg4 12. Rd2 Bxf3 13. gxf3 a6 14. 0-0 Qd7 15. Kg2 Rac8 16. Qc5 Qe6 17. Bc4 Qd7 18. b4 Nxe4 19. fxe4 Qg4+ 20. Kh1 Qf3+ 21. Kg1 Qg4+ 1/2-1/2

[Event "US Open-58"]
[Site "Cleveland"]
[Date "1957.08.06"]
[Round "2"]
[White "Grombacher, Walter"]
[Black "Berliner, Hans Jack"]
[Result "0-1"]
[ECO "A48"]
[PlyCount "82"]
[EventDate "1957.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bf4 0-0 5. e3 d6 6. Be2 Nbd7 7. Nbd2 Re8 8. 0-0 e5 9. dxe5 dxe5 10. Bg5 Nc5 11. Qc2 Qd5 12. Bxf6 Bxf6 13. e4 Qd6 14. b4 Ne6 15. Nc4 Qe7 16. g3 Ng5 17. Ne3 c6 18. h4 Nxf3+ 19. Bxf3 h5 20. Kg2 Bg7 21. Rad1 Be6 22. Be2 a5 23. b5 Qc5 24. bxc6 bxc6 25. a4 Bh6 26. Rd3 Reb8 27. Rb1 Rb6 28. Rxb6 Qxb6 29. c4 Rb8 30. c5 Qb4 31. Rd6 Bxe3 32. fxe3 Bb3 33. Qd3 Qxc5 34. Rd8+ Rxd8 35. Qxd8+ Kg7 36. Bxh5 Qc2+ 37. Kf1 Bc4+ 38. Kg1 Qxe4 39. Bd1 Qxe3+ 40. Kh2 Qf2+ 41. Kh3 Bf1+ 0-1

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.01"]
[Round "3"]
[White "Grombacher, Walter"]
[Black "Burger, W."]
[Result "1-0"]
[ECO "C29"]
[PlyCount "33"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Bg4 6. Be2 Bxf3 7. Bxf3 Nxc3 8. bxc3 Bc5 9. d4 Bb6 10. a4 Nc6 11. Ba3 Qd7 12. 0-0 g6 13. Bg4 Qd8 14. e6 fxe6 15. Bxe6 Qg5 16. Qf3 Nd8 17. Qf8+ 1-0

[Event "US Open-56"]
[Site "Long Beach"]
[Date "1955.08.19"]
[Round "11"]
[White "Donovan, Jeremiah"]
[Black "Grombacher, Walter"]
[Result "1-0"]
[ECO "D95"]
[PlyCount "31"]
[EventDate "1955.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Nf3 0-0 6. Qb3 c6 7. Bd3 dxc4 8. Bxc4 Nbd7 9. Ng5 e6 10. 0-0 Nb6 11. Be2 Nfd5 12. f4 Nd7 13. Bf3 Qb6 14. Qc4 Qb4 15. Bxd5 Qxc4 16. Bxc4 1-0

[Event "US Open-56"]
[Site "Long Beach"]
[Date "1955.08.18"]
[Round "10"]
[White "Grombacher, Walter"]
[Black "Young, Donald"]
[Result "1-0"]
[ECO "C29"]
[PlyCount "63"]
[EventDate "1955.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Bg4 6. d3 Nxc3 7. bxc3 c5 8. Rb1 b6 9. h3 Bh5 10. g4 Bg6 11. Bg2 Nc6 12. 0-0 Be7 13. Qe2 0-0 14. Bd2 Rc8 15. Rbe1 Re8 16. Qd1 h6 17. Qc1 c4 18. d4 Be4 19. Re2 b5 20. Ref2 Rf8 21. Kh2 a5 22. Bxh6 gxh6 23. Qxh6 Bxf3 24. Rxf3 Bg5 25. Qh5 Rc7 26. Rf6 Bxf6 27. exf6 Ne7 28. Qh6 Qd6+ 29. Kh1 Qxf6 30. Rxf6 Ng6 31. Bxd5 Re8 32. Rxg6# 1-0

[Event "US Open-56"]
[Site "Long Beach"]
[Date "1955.08.16"]
[Round "8"]
[White "Grombacher, Walter"]
[Black "Logwood, Edward"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "31"]
[EventDate "1955.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 7. Nc3 Qd7 8. d5 Bxf3 9. gxf3 0-0-0 10. dxc6 Qxc6 11. Qe2 e6 12. Be3 Bb4 13. Rc1 Nf6 14. a3 Ba5 15. b4 Bc7 16. Nb5 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.11"]
[Round "9"]
[White "Smale, S."]
[Black "Grombacher, Walter"]
[Result "1-0"]
[ECO "D95"]
[PlyCount "105"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Nf3 0-0 6. Qb3 e6 7. Bd2 c6 8. Be2 Nbd7 9. 0-0 Ne4 10. Rfd1 Nxd2 11. Rxd2 f5 12. Rc1 Nb6 13. c5 Nd7 14. Qa4 Kh8 15. b4 a6 16. b5 Qc7 17. Rb2 e5 18. Ng5 Nf6 19. bxc6 bxc6 20. dxe5 Ne4 21. Ncxe4 fxe4 22. f4 exf3 23. Nxf3 Bxe5 24. Rb6 Rf6 25. Nxe5 Qxe5 26. Qd4 Qxd4 27. exd4 a5 28. Rf1 Rxf1+ 29. Kxf1 Bd7 30. Rb7 Be8 31. Kf2 h5 32. Ke3 Kg8 33. Kf4 Bf7 34. Rc7 Rf8 35. Ra7 Re8 36. Bf3 Kg7 37. Rxa5 Kf6 38. h4 Be6 39. Ra6 Rc8 40. a4 Ke7 41. a5 Bd7 42. Rb6 Ra8 43. a6 Rf8+ 44. Ke3 Ra8 45. Be2 Kf6 46. Rb7 Ke7 47. Bd3 Kd8 48. Rb6 Be8 49. Kf4 Kc7 50. Rb7+ Kd8 51. Ke5 Bd7 52. Kd6 Bf5 53. Bxf5 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.03"]
[Round "2"]
[White "Sherwin, James T"]
[Black "Grombacher, Walter"]
[Result "1-0"]
[ECO "D97"]
[PlyCount "69"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 0-0 7. e4 c6 8. Be2 a5 9. 0-0 b5 10. Qd3 b4 11. Na4 Ba6 12. Qc2 Bb5 13. Nc5 Nbd7 14. e5 Nd5 15. e6 Nxc5 16. dxc5 fxe6 17. Ng5 Rf6 18. Bxb5 cxb5 19. Re1 Qc8 20. Qe2 Ra6 21. Qxb5 Rc6 22. Qd3 Nf4 23. Bxf4 Rxf4 24. Qh3 e5 25. Qxh7+ Kf8 26. Rad1 Rcf6 27. Qh3 e6 28. Nh7+ Kf7 29. Nxf6 Kxf6 30. Rc1 Qc6 31. Qd3 Rg4 32. Qd8+ Kf7 33. g3 Rd4 34. Qb6 Qf3 35. c6 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.02"]
[Round "1"]
[White "Grombacher, Walter"]
[Black "Lombardy, William James"]
[Result "0-1"]
[ECO "A48"]
[PlyCount "68"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. c3 d6 5. Nbd2 Nfd7 6. e4 0-0 7. Bc4 e5 8. dxe5 dxe5 9. Bg5 Qe8 10. 0-0 Nb6 11. Bb3 N8d7 12. Qe2 h6 13. Be3 Qe7 14. a4 a5 15. Nc4 Nxc4 16. Bxc4 Nc5 17. Nd2 Bd7 18. b3 Kh7 19. f3 Ne6 20. Qf2 Rad8 21. Rad1 Bc6 22. Bxe6 Qxe6 23. Nc4 b6 24. Qh4 Rxd1 25. Rxd1 Bxa4 26. bxa4 Qxc4 27. g4 Qe2 28. Re1 Qxf3 29. Bxh6 Bxh6 30. g5 Rd8 31. Qxh6+ Kg8 32. Qh4 Rd2 33. Qg3 Qxg3+ 34. hxg3 Kf8 0-1

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.16"]
[Round "8"]
[White "Sandrin, Angelo"]
[Black "Grombacher, Walter"]
[Result "1-0"]
[ECO "D88"]
[PlyCount "57"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Bc4 Bg7 8. Ne2 0-0 9. 0-0 cxd4 10. cxd4 Nc6 11. Be3 e6 12. Rc1 Na5 13. Bd3 a6 14. Qc2 Bd7 15. Bf4 Bc6 16. Qc5 Rc8 17. Qa3 Bxd4 18. Nxd4 Qxd4 19. Rfd1 Qa4 20. Qe7 f6 21. Qxe6+ Kg7 22. Qh3 h5 23. Qe3 Rfd8 24. e5 fxe5 25. Qxe5+ Kf7 26. Bg5 Rd7 27. Qf6+ Kg8 28. Qxg6+ Rg7 29. Qe6+ 1-0

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.14"]
[Round "5"]
[White "Grombacher, Walter"]
[Black "Horowitz, Israel Albert"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "147"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. c3 Nbd7 4. Nf3 c5 5. e3 g6 6. Bd3 Bg7 7. Nbd2 0-0 8. 0-0 b6 9. h3 Bb7 10. Ne5 Ne4 11. Nxd7 Qxd7 12. Bxe4 dxe4 13. dxc5 Rad8 14. Nb3 Qc8 15. Qc2 bxc5 16. Rfd1 Rd3 17. Nc1 Rxd1+ 18. Qxd1 Rd8 19. Qa4 Qc6 20. Qxc6 Bxc6 21. Nb3 c4 22. Na5 Bb5 23. a4 Ba6 24. Nc6 Re8 25. Bc7 Ra8 26. Nxe7+ Kf8 27. Nc6 Ke8 28. Nb8 Bc8 29. Rd1 Bf6 30. Rd6 Be6 31. a5 a6 32. Rxa6 Rxa6 33. Nxa6 Kd7 34. Bb6 Kc6 35. Kf1 Be7 36. Ke2 Bd6 37. Kd2 Bc8 38. Nb4+ Bxb4 39. cxb4 Ba6 40. Kc3 Kd5 41. f3 f5 42. h4 Bb5 43. Bd8 Ba6 44. Bg5 Bb5 45. fxe4+ Kxe4 46. Bh6 Kd5 47. Kd2 Ke4 48. Ke1 Ba6 49. Kf2 Bb5 50. Kg3 Ke5 51. h5 Ba6 52. Kh4 Kf6 53. Bg5+ Ke5 54. hxg6 hxg6 55. Bd8 Ke4 56. Bb6 f4 57. exf4 Kxf4 58. Bc7+ Kf5 59. g4+ Kf6 60. Bd8+ Kf7 61. Kg5 Bb5 62. Bc7 Ba4 63. Bg3 Bc6 64. Bh2 Bd7 65. Kf4 Ke7 66. Ke5 Bxg4 67. Kd5 Kd7 68. Kc5 Kc8 69. a6 Kd8 70. b5 Bc8 71. Kb6 Bf5 72. Kb7 Kd7 73. a7 Be4+ 74. Kb8 1-0

[Event "US Open-53"]
[Site "Tampa"]
[Date "1952.07.25"]
[Round "12"]
[White "Bills, William"]
[Black "Grombacher, Walter"]
[Result "1-0"]
[ECO "B03"]
[PlyCount "67"]
[EventDate "1952.07.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Nb4 10. Rc1 c5 11. a3 cxd4 12. Nxd4 Nc6 13. Nxf5 exf5 14. Bf4 Be7 15. Be2 Qxd1+ 16. Rxd1 g5 17. Bg3 f4 18. Bf2 Nxe5 19. Bd4 f6 20. Bh5+ Kf8 21. c5 Nbc4 22. Nd5 Ne3 23. Nxe3 fxe3 24. Rf1 Nd7 25. Bxe3 Nxc5 26. Bxc5 Bxc5 27. Rxf6+ Kg7 28. Rf5 Kh6 29. g4 Be7 30. Rd7 Rhf8 31. Rxe7 Rxf5 32. Re6+ Rf6 33. Rxf6+ Kg7 34. Rf7+ 1-0

[Event "US Open-53"]
[Site "Tampa"]
[Date "1952.07.24"]
[Round "11"]
[White "Grombacher, Walter"]
[Black "Colon Romero, Miguel"]
[Result "0-1"]
[ECO "A45"]
[PlyCount "74"]
[EventDate "1952.07.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 g6 3. Bd3 Bg7 4. f4 d6 5. Nf3 0-0 6. 0-0 c5 7. c3 b6 8. Nbd2 Bb7 9. e4 Qc7 10. e5 Nd5 11. Ne4 f5 12. Neg5 Qd7 13. e6 Qc8 14. c4 Nb4 15. d5 b5 16. a3 Nxd3 17. Qxd3 bxc4 18. Qd2 Na6 19. Nxh7 Kxh7 20. Ng5+ Kg8 21. Qf2 Bd4 22. Be3 Kg7 23. Bxd4+ cxd4 24. Qxd4+ Rf6 25. b4 Nc7 26. Rf3 Nxd5 27. Rh3 Qc6 28. Rh7+ Kg8 29. Qf2 Nxf4 30. Rh8+ Kxh8 31. Qh4+ Nh5 32. Ra2 c3 33. Nf7+ Kg7 34. Qg5 Rxf7 35. exf7 Kxf7 36. Re2 Nf6 37. Qe3 Qb6 0-1

[Event "US Open-53"]
[Site "Tampa"]
[Date "1952.07.23"]
[Round "10"]
[White "Mednis, Edmar John"]
[Black "Grombacher, Walter"]
[Result "1/2-1/2"]
[ECO "B05"]
[PlyCount "70"]
[EventDate "1952.07.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Nf3 Bg4 7. Be2 Nc6 8. b3 Be7 9. Bb2 Bf6 10. 0-0 0-0 11. Na3 Re8 12. Nc2 Re7 13. Ne3 Bxf3 14. Bxf3 g6 15. g3 Qf8 16. h4 h5 17. Qd2 Qg7 18. Rad1 Rae8 19. a4 a5 20. Bxc6 bxc6 21. Qxa5 c5 22. dxc5 dxc5 23. Bxf6 Qxf6 24. Qxc5 Qf3 25. Qg5 Re4 26. Rd8 Rxd8 27. Qxd8+ Kg7 28. a5 Nd7 29. Qxd7 c5 30. Qd2 g5 31. Nd5 f6 32. hxg5 Rh4 33. gxf6+ Kf7 34. gxh4 Qg4+ 35. Kh2 Qxh4+ 1/2-1/2

[Event "US Open-53"]
[Site "Tampa"]
[Date "1952.07.22"]
[Round "9"]
[White "Grombacher, Walter"]
[Black "Romanenko, Ivan1"]
[Result "1/2-1/2"]
[ECO "A80"]
[PlyCount "74"]
[EventDate "1952.07.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 f5 2. e3 Nf6 3. Bd3 d5 4. f4 e6 5. Nf3 Nbd7 6. Nbd2 Ne4 7. Bxe4 dxe4 8. Ng5 Nf6 9. Nc4 h6 10. Nh3 Bd6 11. Ne5 0-0 12. 0-0 Qe8 13. Bd2 b6 14. Kh1 Ba6 15. Rg1 Bxe5 16. dxe5 Ng4 17. Qe1 Qh5 18. Qg3 Rad8 19. Bc3 c5 20. Rgd1 Rxd1+ 21. Rxd1 Nxe3 22. Rd7 Ng4 23. Bd2 Be2 24. Kg1 Bb5 25. Rd6 Nxe5 26. fxe5 Qd1+ 27. Qe1 Qxc2 28. Rxe6 f4 29. Nxf4 g5 30. Ne2 Qc4 31. Rg6+ Kh7 32. Rxh6+ Kxh6 33. Qh4+ Kg6 34. Qxg5+ Kf7 35. Qf5+ Ke8 36. Qc8+ Kf7 37. Qf5+ Ke8 1/2-1/2

[Event "US Open-53"]
[Site "Tampa"]
[Date "1952.07.21"]
[Round "8"]
[White "Steiner, Herman"]
[Black "Grombacher, Walter"]
[Result "1-0"]
[ECO "D86"]
[PlyCount "73"]
[EventDate "1952.07.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Bc4 cxd4 8. cxd4 Bg7 9. Ne2 Nc6 10. Be3 Qa5+ 11. Kf1 0-0 12. Rb1 e6 13. h4 a6 14. h5 g5 15. h6 Bf6 16. e5 Be7 17. Rh5 b5 18. Bb3 Qd8 19. Bc2 f6 20. exf6 Bxf6 21. Qd3 Rf7 22. Bxg5 Bb7 23. Be3 Kh8 24. Rh3 Qe7 25. Rg3 Rg8 26. Rxg8+ Kxg8 27. Qc3 Bg5 28. Ng3 Na5 29. Bxg5 Qxg5 30. Qxa5 Qf4 31. Nf5 Rxf5 32. Bxf5 Qxf5 33. Qd8+ Kf7 34. Qc7+ Ke8 35. Qb8+ Kd7 36. Qxb7+ Ke8 37. Rc1 1-0

[Event "US Open-53"]
[Site "Tampa"]
[Date "1952.07.18"]
[Round "5"]
[White "Hernandez, Nestor"]
[Black "Grombacher, Walter"]
[Result "0-1"]
[ECO "D85"]
[PlyCount "36"]
[EventDate "1952.07.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 Bg7 8. Bc4 Nc6 9. Bb2 cxd4 10. cxd4 Qa5+ 11. Qd2 Qxd2+ 12. Kxd2 0-0 13. h3 Rd8 14. Ke3 Nb4 15. Bb3 Bd7 16. a3 Bh6+ 17. Ke2 Bb5+ 18. Kd1 Nd3 0-1

[Event "US Open-53"]
[Site "Tampa"]
[Date "1952.07.16"]
[Round "3"]
[White "Fleischer, Myron"]
[Black "Grombacher, Walter"]
[Result "1-0"]
[ECO "E81"]
[PlyCount "55"]
[EventDate "1952.07.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nge2 0-0 6. f3 e5 7. d5 Ne8 8. Be3 f5 9. Qd2 fxe4 10. Nxe4 Bf5 11. N2c3 Nd7 12. Bd3 b6 13. h4 h5 14. b4 a5 15. b5 Nef6 16. 0-0-0 Nxe4 17. Nxe4 Bxe4 18. Bxe4 Qe8 19. Qc2 Kh7 20. g4 Bh6 21. Bxh6 Kxh6 22. gxh5 Rf4 23. Qg2 Nf8 24. Qg5+ Kg7 25. Rdg1 Rf6 26. hxg6 Nxg6 27. h5 Qf7 28. hxg6 1-0

