[Event "US Open-90"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "5"]
[White "Gruchacz, Robert"]
[Black "Cunningham, Robin J"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2325"]
[PlyCount "41"]
[EventDate "1989.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 e6 5. Nc3 Ne7 6. Nge2 dxc4 7. Ng3 c5 8. Qa4+ Nbc6 9. dxc5 Ng6 10. Be3 Ngxe5 11. Nxf5 exf5 12. Bxc4 f4 13. Bxf4 Qd4 14. Bb5 Bxc5 15. Qxd4 Bxd4 16. 0-0-0 0-0-0 17. f3 a6 18. Be2 Rhe8 19. Bg3 f5 20. Kb1 g6 21. Rhe1 1/2-1/2

[Event "US Open-90"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "7"]
[White "Gruchacz, Robert"]
[Black "Gilruth, Peter"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2325"]
[BlackElo "2205"]
[PlyCount "31"]
[EventDate "1989.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be2 a6 7. 0-0 b5 8. Nxc6 dxc6 9. f4 Nf6 10. e5 Nd5 11. Nxd5 cxd5 12. Bd3 g6 13. Bd2 Bb7 14. Kh1 Qc6 15. Qe2 Be7 16. Rf3 1/2-1/2

[Event "US Open-90"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "3"]
[White "Gruchacz, Robert"]
[Black "Kaplan, Lael"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2325"]
[BlackElo "2240"]
[PlyCount "91"]
[EventDate "1989.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 d6 3. g3 g6 4. Bg2 Bg7 5. c3 Nc6 6. d4 cxd4 7. cxd4 e5 8. d5 Nce7 9. Nbc3 Nf6 10. Qa4+ Bd7 11. Qb4 Qb6 12. Qxb6 axb6 13. f3 0-0 14. Be3 h5 15. b4 Rfc8 16. Kd2 Ra3 17. Rhc1 Rc4 18. Nb1 Rxe3 19. Kxe3 Bh6+ 20. f4 exf4+ 21. gxf4 Rxc1 22. Nxc1 Ng4+ 23. Kd3 Nxd5 24. Ne2 Nf2+ 25. Kd2 Nxf4 26. Nxf4 Bxf4+ 27. Kc2 Ng4 28. Bh1 Bxh2 29. Nc3 h4 30. Kd2 b5 31. Nd5 Kg7 32. Ke2 h3 33. Rc1 g5 34. Rc7 Ne5 35. Ne3 g4 36. Rxb7 g3 37. Kf1 g2+ 38. Bxg2 hxg2+ 39. Kxg2 Bf4 40. Nf5+ Bxf5 41. exf5 Kf6 42. Rxb5 Kxf5 43. a4 Ke6 44. a5 Kd7 45. a6 Kc8 46. a7 1-0

[Event "US Open-90"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "6"]
[White "Terrie, Henry L"]
[Black "Gruchacz, Robert"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "2250"]
[BlackElo "2325"]
[PlyCount "84"]
[EventDate "1989.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. g3 Nc6 5. Bg2 e6 6. 0-0 Nge7 7. d3 d5 8. Bf4 0-0 9. Rb1 b6 10. a3 Bb7 11. Qa4 Qd7 12. Rfc1 d4 13. Na2 a5 14. Qc2 e5 15. Bd2 a4 16. b4 axb3 17. Rxb3 Nc8 18. e3 Ra7 19. exd4 Nxd4 20. Nxd4 exd4 21. Re1 Bxg2 22. Kxg2 Qc6+ 23. Kg1 Re8 24. Rxe8+ Qxe8 25. Qd1 Qc6 26. Bf4 h5 27. h4 Kh7 28. Nc1 Qa8 29. Rb2 Re7 30. Re2 Qxa3 31. Rxe7 Nxe7 32. g4 hxg4 33. Qxg4 Qa4 34. h5 gxh5 35. Qxh5+ Kg8 36. Qg5 Ng6 37. Bg3 Qd1+ 38. Kg2 Kh7 39. Bf4 f5 40. Qxf5 Bh6 41. Bxh6 Kxh6 42. Qh3+ Kg5 0-1

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1987.??.??"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "Tomas, John"]
[Result "0-1"]
[ECO "A27"]
[WhiteElo "2325"]
[PlyCount "80"]
[EventDate "1987.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. d4 e4 5. Nd2 Bb4 6. e3 Nf6 7. Nd5 0-0 8. Nxb4 Nxb4 9. a3 Nc6 10. d5 Ne5 11. Be2 d6 12. Nb1 Qe8 13. Nc3 Qg6 14. g3 f4 15. exf4 Nf3+ 16. Bxf3 exf3 17. Be3 Re8 18. Kd2 Bf5 19. Rc1 Bd3 20. b3 Ne4+ 21. Nxe4 Be2 22. Qc2 Rxe4 23. h3 c6 24. dxc6 bxc6 25. g4 Rae8 26. f5 Qf6 27. Qc3 Qh4 28. Rce1 Rxe3 29. fxe3 Qf2 30. Kc1 Rxe3 31. Qc2 Qg3 32. Kb1 Bd3 33. Rxe3 Bxc2+ 34. Kxc2 Qg2+ 35. Kc3 Qxh1 36. Re8+ Kf7 37. Re3 f2 38. g5 f1Q 39. c5 dxc5 40. f6 Qa1+ 0-1

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Giles, Morris"]
[Black "Gruchacz, Robert"]
[Result "0-1"]
[ECO "B28"]
[WhiteElo "2265"]
[BlackElo "2335"]
[PlyCount "120"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bd2 Nc6 8. Bc4 0-0 9. Bd5 d6 10. 0-0 Be6 11. f4 exf4 12. Bxe6 fxe6 13. Rxf4 d5 14. exd5 exd5 15. Rf3 Ne5 16. Rg3 Nc4 17. Bg5 Qb6+ 18. Kh1 Bxc3 19. bxc3 Rad8 20. Nd4 Ne4 21. Bxd8 Nxg3+ 22. hxg3 Rxd8 23. Qf3 Qh6+ 24. Kg1 Nd2 25. Qd3 Ne4 26. Rf1 Qd6 27. Qf3 Rf8 28. Nf5 Qc5+ 29. Kh2 g6 30. Qg4 Kh8 31. Ne3 Rxf1 32. Nxf1 Qxc3 33. Qe6 Qc6 34. Qe5+ Kg8 35. Ne3 Nf6 36. Qe7 h5 37. Kg1 b5 38. Qe5 Kf7 39. Qf4 Qd7 40. Qe5 d4 41. Nf1 Ng4 42. Qf4+ Qf5 43. Qc7+ Kg8 44. Nh2 Ne3 45. Nf3 Qf6 46. Qc8+ Kg7 47. Qd7+ Kh6 48. Qxd4 Qxd4 49. Nxd4 Nd5 50. Ne6 Nc3 51. Nc7 a5 52. a3 a4 53. Na6 Nb1 54. Kf2 Nxa3 55. Nb4 Nb1 56. Na2 Na3 57. c3 Kg5 58. Kf3 Kf5 59. Nc1 Nb1 60. Na2 a3 0-1

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Chow, Albert"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2335"]
[BlackElo "2310"]
[PlyCount "85"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7 6. f4 g6 7. b3 Bg7 8. Bb2 0-0 9. Rc1 Nd7 10. Nf3 Rb8 11. 0-0 b6 12. Qc2 Bb7 13. Nd1 e6 14. Bxg7 Kxg7 15. Nf2 Nf6 16. Qb2 Kg8 17. Rfe1 Rc8 18. a3 Qe7 19. e3 Rfd8 20. g4 Ne4 21. Nxe4 Bxe4 22. g5 Bxf3 23. Bxf3 e5 24. fxe5 Qxg5+ 25. Kh1 Ne6 26. Bg2 Qh4 27. Rf1 Rd3 28. Rc4 Qd8 29. Rf2 b5 30. Rc1 c4 31. bxc4 bxc4 32. Kg1 c3 33. Rxc3 Rcxc3 34. dxc3 Qg5 35. Qb8+ Nd8 36. Qxa7 Rxc3 37. a4 Rxe3 38. a5 Rxe5 39. a6 Ra5 40. Qb6 Ne6 41. a7 Kg7 42. Qxa5 Qxa5 43. a8Q 1-0

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "De Fotis, Gregory"]
[Result "1/2-1/2"]
[ECO "A80"]
[WhiteElo "2335"]
[PlyCount "80"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 d5 3. e4 dxe4 4. Bf4 Nf6 5. Qd2 c6 6. f3 Nbd7 7. fxe4 fxe4 8. Nge2 Qa5 9. Ng3 Nb6 10. Ngxe4 Nxe4 11. Nxe4 Qxd2+ 12. Kxd2 Bf5 13. Bd3 g6 14. Rae1 0-0-0 15. c3 Nd5 16. Bg5 h6 17. Bh4 Nf4 18. Bf1 g5 19. Bf2 Bg7 20. Ng3 Bg6 21. Rxe7 Bf6 22. Re1 Rhe8 23. Rxe8 Rxe8 24. b4 h5 25. Ne2 Nd3 26. Be3 Nb2 27. Nc1 g4 28. Be2 Be4 29. Rg1 Bd8 30. g3 a5 31. bxa5 Bxa5 32. Nb3 Bb6 33. c4 Bf3 34. Bd3 Bc7 35. Re1 b5 36. Bf5+ Kb8 37. cxb5 Nc4+ 38. Kd3 Nb2+ 39. Kd2 Nc4+ 40. Kd3 Nb2+ 1/2-1/2

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Karklins, Andrew"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2335"]
[BlackElo "2320"]
[PlyCount "123"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 e6 3. Bg5 c5 4. c3 Nc6 5. e3 h6 6. Bh4 g5 7. Bg3 Ne4 8. Nbd2 Nxg3 9. hxg3 cxd4 10. exd4 d5 11. Bd3 Bg7 12. Qe2 Qb6 13. 0-0-0 Bd7 14. Kb1 0-0-0 15. Nb3 Kb8 16. Bc2 Bc8 17. Ne5 Qc7 18. f4 f6 19. Nxc6+ Qxc6 20. Bg6 Qd6 21. Qe3 e5 22. f5 Rhe8 23. Bxe8 Bxf5+ 24. Ka1 Rxe8 25. dxe5 fxe5 26. Nd4 Bd7 27. Nc2 Be6 28. Na3 d4 29. cxd4 exd4 30. Rhe1 dxe3 31. Rxd6 Bg4 32. Rg6 e2 33. Rxg7 Rd8 34. Rb1 Re8 35. Nc2 Bf5 36. Ne1 Bxb1 37. Kxb1 Rd8 38. Kc2 Rd1 39. Rg8+ Kc7 40. Nd3 Rxd3 41. Re8 Rxg3 42. Rxe2 Kd6 43. Kd2 Kd5 44. Ke1 Kd4 45. Kf2 Rd3 46. Rc2 a5 47. Ke2 Re3+ 48. Kf2 Rd3 49. Ke2 Re3+ 50. Kf2 Re6 51. Rd2+ Kc4 52. Rc2+ Kd4 53. Rd2+ Kc4 54. Rc2+ Kd3 55. Rc3+ Kd4 56. Rb3 b6 57. Rb5 Kc4 58. a4 Kd3 59. b4 axb4 60. Rxb4 Kc3 61. Rb5 Kc4 62. Kg1 1/2-1/2

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Kaushansky, Leonid"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2335"]
[BlackElo "2345"]
[PlyCount "91"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 e4 8. Nd4 Qg5 9. Kf1 Bd7 10. Qa4 a6 11. Rb1 Qg6 12. h4 Be7 13. h5 Qd6 14. Nxc6 bxc6 15. Be2 Qd5 16. f4 exf3 17. gxf3 c5 18. Qc4 Qf5 19. Qd3 Qg5 20. Kf2 Rd8 21. f4 Qf6 22. Qxa6 Bd6 23. Bf3 Qf5 24. Ra1 0-0 25. Qb7 Rfe8 26. Qd5 Qf6 27. Qg5 Qe6 28. h6 g6 29. c4 Bf8 30. Bb2 Bc6 31. Bc3 Bxf3 32. Kxf3 Qc6+ 33. Kf2 f6 34. Qg2 Qe6 35. Qf1 Qe4 36. a4 Rd3 37. Qe2 Bd6 38. Rh4 Qxc4 39. a5 Re4 40. a6 Bxf4 41. Rxf4 Rxf4+ 42. exf4 Qxf4+ 43. Ke1 Qh4+ 44. Kd1 Qh1+ 45. Kc2 Rxc3+ 46. dxc3 1-0

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Schiller, Eric Andrew"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2335"]
[BlackElo "2230"]
[PlyCount "80"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 e6 2. e4 c5 3. Nf3 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Qc7 7. Be2 Bb4 8. Qd3 Nc6 9. f4 Nxd4 10. Qxd4 d6 11. Qd3 0-0 12. 0-0 Bd7 13. Bd2 Bc6 14. Bf3 Rfd8 15. Kh1 Rac8 16. Rac1 Qb8 17. a3 Ba5 18. b4 Bc7 19. a4 b6 20. Rcd1 Ba8 21. Be3 d5 22. exd5 Bxf4 23. Ne4 Nxe4 24. Bxe4 Bxe3 25. Qxe3 exd5 26. cxd5 g6 27. Qd4 b5 28. Qf6 Qa7 29. h4 Re8 30. Bf5 Rcd8 31. axb5 axb5 32. Rde1 Bxd5 33. h5 Qa2 34. Bh3 Qd2 35. Rd1 Qe2 36. hxg6 hxg6 37. Qg5 Bc6 38. Rxd8 Qxf1+ 39. Kh2 Qe2 40. Rxe8+ Qxe8 0-1

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Martinovsky, Eugene Simeon"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "E54"]
[WhiteElo "2235"]
[BlackElo "2335"]
[PlyCount "79"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nf3 c5 4. e3 d5 5. Nc3 cxd4 6. exd4 Bb4 7. Bd3 dxc4 8. Bxc4 0-0 9. 0-0 b6 10. Bg5 Bb7 11. Qe2 h6 12. Bh4 Nbd7 13. Ne5 Bxc3 14. bxc3 Qc7 15. Nxd7 Nxd7 16. Rac1 a6 17. a4 Qc6 18. f4 Qxa4 19. f5 Bd5 20. Bxd5 exd5 21. f6 g6 22. Qe3 Kh7 23. Qh3 Rh8 24. Rce1 Kg8 25. Re7 Nf8 26. Rfe1 Rh7 27. Qf3 Qc6 28. Bg3 Rc8 29. R1e5 Rd8 30. h4 a5 31. Re1 Rc8 32. Kh2 a4 33. Ra7 Nd7 34. Be5 h5 35. c4 Nxe5 36. Rxe5 Qxc4 37. Rxd5 b5 38. Rad7 Rh8 39. Rd8+ Kh7 40. Rxh5+ 1-0

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Pelts, Peter"]
[Black "Gruchacz, Robert"]
[Result "0-1"]
[ECO "A30"]
[BlackElo "2335"]
[PlyCount "80"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. 0-0 e6 6. d3 Nge7 7. Nbd2 d5 8. Rb1 0-0 9. a3 a5 10. Qc2 b6 11. e4 Ra7 12. Re1 dxe4 13. dxe4 e5 14. h3 f5 15. b3 h6 16. Kh2 Be6 17. Bb2 f4 18. Rbd1 Rd7 19. Nf1 Nd4 20. Nxd4 exd4 21. gxf4 Rxf4 22. Bc1 Rf7 23. f4 Qb8 24. Qd3 g5 25. e5 gxf4 26. Re4 Ng6 27. Qe2 Bxe5 28. Bf3 Bf5 29. Nd2 Bxe4 30. Qxe4 Rg7 31. Bh5 Nh4 32. Bg4 Rde7 33. Qd5+ Kh8 34. Nf3 Nxf3+ 35. Bxf3 Qd6 36. Qe4 Qg6 37. Qxg6 Rxg6 38. Re1 Bd6 39. Rxe7 Bxe7 40. Bxf4 Bd6 0-1

[Event "Illinois-ch"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Schiller, Eric Andrew"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2230"]
[BlackElo "2335"]
[PlyCount "82"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Qd5 5. Qd3 Nf6 6. Nxf6+ gxf6 7. Qb5+ Qxb5 8. Bxb5+ Bd7 9. Bxd7+ Nxd7 10. Nf3 0-0-0 11. Bd2 Nb6 12. 0-0-0 Rg8 13. Rhg1 Nc4 14. Bf4 Rg4 15. Bg3 Re4 16. Kb1 Nd6 17. c3 Nf5 18. Rge1 Rxe1 19. Rxe1 c5 20. Re4 cxd4 21. cxd4 Rd5 22. Rg4 Rd8 23. Rg8 Be7 24. Rxd8+ Bxd8 25. Bf4 Bb6 26. Be3 Kd7 27. Kc2 Kc6 28. Kd3 Kd5 29. g4 Nd6 30. b3 Bd8 31. Ne1 f5 32. h3 fxg4 33. hxg4 f5 34. f3 fxg4 35. fxg4 b5 36. Bf4 Ba5 37. Bxd6 Bxe1 38. Bc5 Ba5 39. Bxa7 Bd8 40. a4 bxa4 41. bxa4 Bc7 1/2-1/2

[Event "Illinois"]
[Site "Illinois"]
[Date "1986.??.??"]
[Round "?"]
[White "Szmetan, Ricardo"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2305"]
[BlackElo "2335"]
[PlyCount "69"]
[EventDate "1986.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 0-0 5. Be2 c5 6. dxc5 Qa5+ 7. c3 Qxc5 8. Nbd2 d5 9. Nb3 Qb6 10. Qd4 Qxd4 11. exd4 Nc6 12. Ne5 Nxe5 13. Bxe5 Nd7 14. Bc7 Nf6 15. Be5 Nd7 16. Bxg7 Kxg7 17. a4 a5 18. Kd2 Nf6 19. f3 Ne8 20. Nc5 Nd6 21. b3 b6 22. Nd3 Ba6 23. Rhe1 Rfc8 24. Rac1 Rc7 25. Nf4 Bb7 26. Bd3 Rd8 27. h4 Kg8 28. Re5 Nc8 29. h5 Rd6 30. hxg6 hxg6 31. g4 f6 32. Ree1 g5 33. Nh5 Kf7 34. Ng3 e6 35. Rcd1 1/2-1/2

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "2"]
[White "Colias, Billy"]
[Black "Gruchacz, Robert"]
[Result "0-1"]
[ECO "A31"]
[BlackElo "2330"]
[PlyCount "140"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 d6 7. Be2 Be7 8. Be3 0-0 9. 0-0 b6 10. f3 Bb7 11. Qe1 Nc6 12. Nc2 Rb8 13. Qf2 Ba8 14. Rfd1 Qc7 15. Rac1 Rfe8 16. Kh1 Ne5 17. Nd4 Qb7 18. Qg3 Rbc8 19. b3 Qb8 20. Qh3 Ned7 21. Bd3 Bf8 22. Bb1 g6 23. Bh6 Bg7 24. Nde2 Bh8 25. Rd2 b5 26. Rcd1 bxc4 27. Rxd6 cxb3 28. axb3 Nc5 29. Ba2 Nh5 30. Qh4 Qb4 31. Na4 Nxa4 32. bxa4 Bf6 33. Qe1 Qxa4 34. Bb1 Be5 35. R6d2 Qb4 36. Ra2 Qxe1+ 37. Rxe1 Bb7 38. Bd3 Rc6 39. Rb1 Bc8 40. Be3 Rd8 41. Rb3 Rcd6 42. Bc2 Nf4 43. Nxf4 Bxf4 44. Bb6 R8d7 45. g3 Be5 46. Be3 Rb7 47. Ra5 Rxb3 48. Bxb3 Rd3 49. Rxe5 Rxe3 50. Rc5 Bb7 51. Bc2 Rxf3 52. Kg2 Ra3 53. Rc7 Ra2 54. Kf3 Rb2 55. Kf4 Kg7 56. Ke5 Rb6 57. Bd3 Bc6 58. Kd4 Bb5 59. Kc5 Rb8 60. Bc2 Rd8 61. Bb3 Rd3 62. Ba2 Rc3+ 63. Kb6 Rxc7 64. Kxc7 e5 65. Bd5 f5 66. Kd6 Kf6 67. Kc5 Bd3 68. exf5 gxf5 69. h3 h6 70. Bg2 Be2 0-1

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "4"]
[White "Gruchacz, Robert"]
[Black "Bachler, Kevin L"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "2330"]
[PlyCount "115"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Qg4 c5 6. Nf3 Nbc6 7. a3 Qa5 8. Bd2 Nxd4 9. Nxd4 cxd4 10. Qxd4 Nc6 11. Bb5 Bxc3 12. Bxc6+ bxc6 13. Bxc3 Qb6 14. Qg4 0-0 15. 0-0 Qc7 16. b4 Kh8 17. Qh4 Qd8 18. Qxd8 Rxd8 19. Bd4 Kg8 20. Rfe1 Ba6 21. Re3 Bc4 22. h4 Rdc8 23. h5 h6 24. Rae1 a5 25. c3 Bb3 26. Kh2 Bc2 27. Rc1 Bb3 28. Kg3 g6 29. Rf3 gxh5 30. Kh4 Bc4 31. Re1 axb4 32. cxb4 Rc7 33. Kxh5 Kh7 34. Rg3 Ba2 35. f4 Rcc8 36. Rf3 Rg8 37. g4 Rg6 38. Kh4 Rag8 39. Rg1 Bc4 40. Re3 Bb5 41. Rgg3 Ba4 42. Rg1 Bc2 43. Rc3 Ba4 44. Re3 Bc2 45. Reg3 Ba4 46. Bc5 Bc2 47. Rc3 Bf5 48. gxf5 Rxg1 49. Bxg1 Rxg1 50. fxe6 fxe6 51. Rxc6 Kg6 52. Rxe6+ Kf5 53. Rf6+ Ke4 54. e6 d4 55. e7 Kf3 56. Rxh6 Re1 57. Rd6 Kxf4 58. Rf6+ 1-0

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "3"]
[White "Gruchacz, Robert"]
[Black "Dandridge, Marvin"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2330"]
[PlyCount "61"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 e6 5. Nc3 Nd7 6. Nge2 dxc4 7. Ng3 Bd3 8. Nge4 a6 9. Bg5 Qb6 10. Bxd3 cxd3 11. Qxd3 f6 12. exf6 gxf6 13. Bh4 0-0-0 14. 0-0 Be7 15. Qg3 Nf8 16. Rfd1 Rxd4 17. Rxd4 Qxd4 18. Rd1 Qe5 19. Qe3 Qc7 20. Na4 Nd7 21. Qd4 Ne5 22. f4 c5 23. Nexc5 Nc6 24. Qe3 Bxc5 25. Nxc5 Qe7 26. Rd7 Qxd7 27. Nxd7 Kxd7 28. f5 e5 29. Qb3 Nd8 30. Qd5+ Ke8 31. Qd6 1-0

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "Giles, Morris"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2330"]
[PlyCount "75"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 d6 3. g3 Nc6 4. Bg2 g6 5. c3 Bg7 6. d4 cxd4 7. cxd4 Bg4 8. f3 Bd7 9. Nbc3 e6 10. Nb5 Qa5+ 11. Nec3 Bf8 12. Bf4 e5 13. Bd2 Rc8 14. d5 Nb4 15. Bf1 a6 16. Na3 Qc5 17. Nc4 Bh6 18. a3 a5 19. axb4 axb4 20. Bxh6 Nxh6 21. Ra5 Qc7 22. Nb5 Bxb5 23. Rxb5 0-0 24. Be2 f5 25. 0-0 fxe4 26. fxe4 Rxf1+ 27. Bxf1 Rf8 28. Ne3 Nf7 29. Qc2 Qb8 30. Rxb4 Ng5 31. Bg2 Qa7 32. Rb3 b5 33. Ra3 Qd4 34. Rd3 Qa7 35. Qe2 b4 36. h4 Nf7 37. Kh2 Nd8 38. Rd1 1-0

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "5"]
[White "McCambridge, Vincent"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2465"]
[BlackElo "2330"]
[PlyCount "99"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 d5 3. c4 Nf6 4. Bg5 h6 5. Bxf6 Qxf6 6. Nc3 Qd8 7. e3 Be7 8. Qc2 a6 9. Rd1 0-0 10. a3 c6 11. e4 b5 12. cxd5 cxd5 13. Bd3 Ra7 14. 0-0 Rc7 15. exd5 exd5 16. Qb3 Be6 17. Rfe1 Bf6 18. Bb1 Re8 19. Nxd5 Bxd5 20. Qxd5 Rxe1+ 21. Rxe1 Rd7 22. Qe4 g6 23. Ba2 Kg7 24. g3 Qb6 25. Kg2 Nc6 26. Ne5 Re7 27. f4 Qxd4 28. Qxd4 Nxd4 29. Kf2 Rc7 30. Bb1 g5 31. Rd1 Ne6 32. Kf3 Re7 33. Be4 Nc5 34. Rd5 gxf4 35. gxf4 Nxe4 36. Kxe4 Rc7 37. Rd2 Rc1 38. Nd7 Re1+ 39. Kf5 Be7 40. Rg2+ Kh8 41. Ne5 f6 42. Ng6+ Kh7 43. Rd2 Kg7 44. Rd7 Kf7 45. Rxe7+ Rxe7 46. Nxe7 Kxe7 47. Kg6 Ke6 48. f5+ Ke5 49. b4 h5 50. h4 1-0

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.18"]
[Round "9"]
[White "Cummings, David H"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "2265"]
[BlackElo "2365"]
[PlyCount "25"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Rb1 Rb8 6. a3 a6 7. b4 cxb4 8. axb4 b5 9. cxb5 axb5 10. Nf3 e6 11. d4 d5 12. Bf4 Rb6 13. 0-0 1/2-1/2

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.17"]
[Round "8"]
[White "Gruchacz, Robert"]
[Black "Tisdall, Jonathan D"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2365"]
[BlackElo "2350"]
[PlyCount "26"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. cxd5 exd5 6. Bg5 Be7 7. e3 c6 8. Bd3 0-0 9. Qc2 Re8 10. h3 Nf8 11. 0-0-0 Qa5 12. Kb1 Be6 13. g4 Ne4 1/2-1/2

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.16"]
[Round "7"]
[White "Day, Lawrence A"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "2385"]
[BlackElo "2365"]
[PlyCount "43"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Ne7 6. Nb5 Bxd2+ 7. Qxd2 0-0 8. f4 cxd4 9. Nf3 Nbc6 10. Nbxd4 Bd7 11. Be2 Qb6 12. 0-0 Nxd4 13. Qxd4 Qxd4+ 14. Nxd4 Rac8 15. c3 Rc7 16. a4 a5 17. Rfc1 Rfc8 18. Bd3 Rf8 19. g3 Nc8 20. Rc2 Nb6 21. b3 Re8 22. Kf2 1-0

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.15"]
[Round "6"]
[White "Gruchacz, Robert"]
[Black "Van der Vliet, Fredrik"]
[Result "0-1"]
[ECO "B96"]
[WhiteElo "2365"]
[BlackElo "2380"]
[PlyCount "70"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. Qe2 Nfd7 11. 0-0-0 Bb7 12. Qg4 Qxe5 13. Bd3 h6 14. Nxe6 hxg5 15. Rde1 Rh4 16. Qd1 fxe6 17. Bg6+ Ke7 18. Rxe5 Nxe5 19. Qd2 Rf4 20. Rd1 Nbc6 21. Qd6+ Kf6 22. Nd5+ Kxg6 23. Nxf4+ gxf4 24. Qxe6+ Kh7 25. Rd5 Rc8 26. a3 Rc7 27. Qf5+ Kg8 28. Qxf4 Rf7 29. Qg3 Nc4 30. Rd1 Bc5 31. Re1 Nd4 32. h4 Nf5 33. Qb8+ Bf8 34. g3 Nd4 35. g4 Rf2 0-1

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.14"]
[Round "5"]
[White "Goodman, David SC"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "2375"]
[BlackElo "2365"]
[PlyCount "65"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bb4 7. Bd3 0-0 8. 0-0 Re8 9. a3 Bd6 10. e4 dxc4 11. Bxc4 e5 12. Be3 Qe7 13. Rfe1 exd4 14. Bxd4 Ne5 15. Nxe5 Bxe5 16. Bxe5 Qxe5 17. Rad1 Ng4 18. g3 Qh5 19. h4 Ne5 20. Be2 Bg4 21. Kg2 Bf3+ 22. Bxf3 Qxf3+ 23. Kh2 Rad8 24. Rxd8 Rxd8 25. Qe2 h5 26. Kh3 Rd3 27. Qxf3 Nxf3 28. Rd1 Rxd1 29. Nxd1 Nd2 30. Nc3 Nc4 31. Nd1 Nd2 32. Nc3 Nc4 33. Nd1 1/2-1/2

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.13"]
[Round "4"]
[White "Gruchacz, Robert"]
[Black "Watson, William N"]
[Result "0-1"]
[ECO "B77"]
[WhiteElo "2365"]
[BlackElo "2335"]
[PlyCount "64"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. Bc4 Bd7 10. h4 Ne5 11. Bb3 h5 12. Bh6 Bxh6 13. Qxh6 Rc8 14. Nde2 b5 15. a3 Qa5 16. 0-0-0 Rc5 17. Nd5 Nxd5 18. Rxd5 Rxd5 19. exd5 b4 20. Qd2 Rb8 21. Kb1 Qc5 22. axb4 Rxb4 23. Ng3 a5 24. Ne4 Qb5 25. Re1 a4 26. Ba2 Rxb2+ 27. Ka1 Bf5 28. Qc3 Rb4 29. Ng3 Bd7 30. Ne4 Bf5 31. Ng3 Qa5 32. Qd2 Rb1+ 0-1

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.12"]
[Round "3"]
[White "Chandler, Murray G"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "E42"]
[WhiteElo "2450"]
[BlackElo "2365"]
[PlyCount "53"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 c5 5. Nge2 d5 6. cxd5 Nxd5 7. g3 cxd4 8. exd4 Bd7 9. Bg2 Bc6 10. 0-0 0-0 11. Nxd5 Bxd5 12. Bxd5 Qxd5 13. Nf4 Qd7 14. d5 exd5 15. Nxd5 Bd6 16. Qb3 Na6 17. Be3 Nc5 18. Qc2 Qa4 19. Qe2 Rfe8 20. Rfd1 Rad8 21. Rac1 b6 22. Rc4 Qxa2 23. Rh4 Bf8 24. Qh5 h6 25. Rg4 Qb3 26. Nf6+ Kh8 27. Qxh6+ 1-0

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.11"]
[Round "2"]
[White "Gruchacz, Robert"]
[Black "Taulbut, Shaun M"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2365"]
[BlackElo "2375"]
[PlyCount "37"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Ne4 5. Nce2 f6 6. f3 Ng5 7. h4 Nf7 8. f4 c5 9. c3 Nc6 10. Nf3 Be7 11. g3 0-0 12. Bg2 Qb6 13. exf6 Bxf6 14. dxc5 Qxc5 15. Qd3 e5 16. fxe5 Ncxe5 17. Nxe5 Bxe5 18. Be3 Qc4 19. Qxc4 1/2-1/2

[Event "Competence Computers International"]
[Site "Brighton"]
[Date "1980.12.10"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "Speelman, Jonathan S"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2365"]
[BlackElo "2490"]
[PlyCount "46"]
[EventDate "1980.12.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 g6 8. Bd2 0-0 9. Bd3 d6 10. f4 Qb6 11. Nf3 Nd7 12. Qh3 dxe5 13. fxe5 Qc7 14. Nb5 Bxd2+ 15. Kxd2 Qa5+ 16. c3 Qb6 17. Rae1 a6 18. Qh6 Rd8 19. Rhf1 Nf8 20. Ng5 Nf4 21. Rxf4 Qxb5 22. Re3 Qxb2+ 23. Kd1 Qxc3 1/2-1/2

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.05.13"]
[Round "3"]
[White "Piasetski, Leon David"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B37"]
[WhiteElo "2420"]
[BlackElo "2365"]
[PlyCount "110"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 g6 3. d4 cxd4 4. Nxd4 Nc6 5. e4 Bg7 6. Nc2 d6 7. Be2 f5 8. exf5 Bxf5 9. 0-0 Nh6 10. Nd2 0-0 11. Nf3 Kh8 12. Ne3 Be6 13. Rb1 Nf5 14. Ng5 Bg8 15. Nxf5 gxf5 16. b3 h6 17. Nf3 e5 18. Ba3 Rf6 19. Qd2 d5 20. cxd5 Qxd5 21. Qxd5 Bxd5 22. Rfd1 Rd8 23. Rbc1 Rf7 24. Nh4 Nd4 25. Bh5 Rfd7 26. Be7 Ra8 27. f4 Kg8 28. Bc5 Bf7 29. Bxf7+ Rxf7 30. Bxd4 exd4 31. Rc5 b6 32. Rd5 Rc8 33. Nxf5 Rc2 34. Nxg7 Kxg7 35. R5xd4 Rxa2 36. h3 Rb2 37. R1d3 Kg6 38. Rg3+ Kh7 39. Rgd3 Kg6 40. Rd6+ Kh7 41. Rd7 Rxd7 42. Rxd7+ Kg6 43. Rxa7 Rxb3 44. Kf2 h5 45. Rd7 b5 46. Rd5 b4 47. Rb5 Kh6 48. Rb6+ Kg7 49. f5 Kf7 50. g4 Rxh3 51. g5 Rc3 52. g6+ Kg7 53. Rb7+ Kg8 54. f6 Rc8 55. Rg7+ Kh8 1-0

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.05.12"]
[Round "2"]
[White "Gruchacz, Robert"]
[Black "Alburt, Lev O"]
[Result "1/2-1/2"]
[ECO "B02"]
[WhiteElo "2365"]
[BlackElo "2515"]
[PlyCount "63"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 c5 5. f4 Nc6 6. Nf3 d5 7. Bd3 c4 8. Be2 Bf5 9. Rb1 Rb8 10. Ba3 Qa5 11. Qc1 Bxc2 12. Qxc2 Qxa3 13. 0-0 e6 14. f5 Be7 15. fxe6 fxe6 16. Nd4 Bc5 17. Bh5+ g6 18. Bxg6+ hxg6 19. Qxg6+ Kd8 20. Qxe6 Ne7 21. Rf7 b5 22. Kh1 Bxd4 23. cxd4 Rb6 24. Qg4 Qxa2 25. Rbf1 Qxd2 26. Rxe7 Rxh2+ 27. Kxh2 Qh6+ 28. Kg1 Kxe7 29. Qc8 Qe3+ 30. Rf2 Qe1+ 31. Rf1 Qe3+ 32. Rf2 1/2-1/2

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.05.11"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "La Rota, Fabio"]
[Result "0-1"]
[ECO "D42"]
[WhiteElo "2365"]
[BlackElo "2320"]
[PlyCount "150"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. cxd5 Nxd5 8. Bd3 Nc6 9. 0-0 0-0 10. Re1 Bf6 11. Be4 h6 12. a3 b6 13. Bb1 Nde7 14. Qd3 Ng6 15. d5 exd5 16. Nxd5 Be6 17. Nxf6+ Qxf6 18. Bd2 Rfd8 19. Qc3 Nce5 20. Nxe5 Nxe5 21. Qc2 Nd3 22. Bc3 Qg6 23. Re3 Bf5 24. Rg3 Nf4 25. Rxg6 Bxc2 26. Rxg7+ Kf8 27. Bxc2 Ne2+ 28. Kf1 Nxc3 29. Rh7 Nb5 30. Bb3 Nd6 31. Rd1 Kg8 32. Rxh6 Ne4 33. Rxd8+ Rxd8 34. Bc2 Nxf2 35. Rf6 Ng4 36. Rf4 Ne3+ 37. Ke2 Nxc2 38. Rc4 Nd4+ 39. Ke3 Ne6 40. h4 Kg7 41. g4 Kf6 42. a4 Nc5 43. b4 Nxa4 44. Rc6+ Kg7 45. Rc7 a5 46. bxa5 bxa5 47. Ra7 Nb6 48. Ra6 Nc4+ 49. Ke4 Nd2+ 50. Ke3 Nb3 51. h5 Rd3+ 52. Kf4 Rd4+ 53. Kf5 a4 54. h6+ Kh7 55. g5 Nc5 56. Ra7 Nd7 57. Ra5 Rd1 58. Kg4 Rf1 59. Kh5 Rf4 60. Rd5 Nf8 61. Ra5 Ne6 62. Rd5 Rf1 63. Ra5 Rh1+ 64. Kg4 Rg1+ 65. Kh4 Rxg5 66. Rxa4 Kxh6 67. Ra7 Kg6 68. Re7 Rg1 69. Ra7 f5 70. Ra6 Kf6 71. Ra7 Ke5 72. Kh3 Rg7 73. Ra3 f4 74. Kh2 Nd4 75. Kh1 Ke4 0-1

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.05.??"]
[Round "8"]
[White "Garcia, Luis E"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "A38"]
[WhiteElo "2370"]
[BlackElo "2365"]
[PlyCount "19"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 c5 3. Nf3 Bg7 4. g3 Nf6 5. Bg2 e6 6. 0-0 Nc6 7. e3 0-0 8. d4 cxd4 9. Nxd4 Nxd4 10. exd4 1/2-1/2

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.05.??"]
[Round "10"]
[White "Gruchacz, Robert"]
[Black "Fedorowicz, John P"]
[Result "1-0"]
[ECO "B56"]
[WhiteElo "2365"]
[BlackElo "2420"]
[PlyCount "73"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. f4 Qb6 7. Nb3 e6 8. Qf3 Be7 9. Be3 Qc7 10. g4 a6 11. Bg2 Nd7 12. Qf2 b5 13. 0-0 0-0 14. g5 Re8 15. Kh1 Bf8 16. Rae1 Bb7 17. a3 Rac8 18. Bc1 b4 19. axb4 Nxb4 20. Re3 g6 21. Rh3 Bg7 22. Be3 Nf8 23. Bb6 Qe7 24. Bd4 e5 25. fxe5 Bxe5 26. Bxe5 dxe5 27. Rf3 Rc7 28. Qb6 Nxc2 29. Na5 Ba8 30. Nd5 Bxd5 31. exd5 Qd8 32. Nc6 Qd6 33. Qf2 e4 34. Rxf7 e3 35. Ne7+ Rcxe7 36. Rxf8+ Kg7 37. Qf7+ 1-0

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.05.??"]
[Round "8"]
[White "Mednis, Edmar John"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2485"]
[BlackElo "2365"]
[PlyCount "98"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. 0-0 Be7 7. b3 0-0 8. Bb2 d5 9. cxd5 Nxd5 10. Qc2 Nc6 11. Rad1 Rc8 12. Qb1 Nxc3 13. dxc3 Qc7 14. c4 Rfd8 15. Qa1 Bf8 16. h4 h6 17. Bc3 Rxd1 18. Rxd1 Rd8 19. Qc1 Rxd1+ 20. Qxd1 Qd6 21. Qxd6 Bxd6 22. Nd2 Bc7 23. h5 f6 24. f4 Kf7 25. Kf2 Nd8 26. Bxb7 Nxb7 27. Kf3 Nd8 28. g4 Nc6 29. Ke4 Ne7 30. Kf3 Nc6 31. Ne4 Nb8 32. g5 fxg5 33. fxg5 Nd7 34. Kg4 Be5 35. Bxe5 Nxe5+ 36. Kf4 Nc6 37. gxh6 gxh6 38. Nf2 Nd4 39. e4 Ne2+ 40. Ke5 Ke7 41. Ng4 Nc1 42. Kf4 Nd3+ 43. Ke3 Nc1 44. Nxh6 Kf6 45. Kf4 Nd3+ 46. Kg4 Nf2+ 47. Kf3 Nd3 48. Kg4 Nf2+ 49. Kf3 Nd3 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "6"]
[White "Alburt, Lev O"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "B39"]
[WhiteElo "2515"]
[BlackElo "2365"]
[PlyCount "120"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. e4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Rc1 Qa5 11. Qd2 b6 12. Bd3 Bb7 13. 0-0 g5 14. b3 Be5 15. Rfe1 Rg8 16. Nd5 Qxd2 17. Bxd2 f6 18. Be2 Kd8 19. b4 Rc8 20. Red1 Nf4 21. Nxf4 gxf4 22. f3 e6 23. Be1 Ke7 24. Bf2 Bd6 25. Rb1 Bc6 26. Rd3 Rc7 27. a3 Be5 28. Bd1 d6 29. a4 Kd8 30. b5 Bb7 31. Be2 Rxc4 32. a5 Kc7 33. Rdd1 Rc2 34. Rdc1 Rxc1+ 35. Rxc1+ Kd7 36. axb6 axb6 37. Bxb6 Rc8 38. Rxc8 Kxc8 39. Bc4 Kd7 40. Kf2 d5 41. Bd3 h6 42. Bc5 Bd6 43. Bd4 Ke7 44. Ke2 e5 45. Bf2 Ke6 46. Bh4 Bc5 47. Be1 Bg1 48. h3 Bb6 49. Bb4 f5 50. exf5+ Kf6 51. Bc3 Bc8 52. Be1 Bxf5 53. Bxf5 Kxf5 54. Bf2 Bxf2 55. Kxf2 Ke6 56. g4 fxg3+ 57. Kxg3 Kd6 58. f4 exf4+ 59. Kxf4 Kc5 60. Ke5 Kxb5 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "4"]
[White "Chandler, Murray G"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2450"]
[BlackElo "2365"]
[PlyCount "65"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bf4 Bb7 5. e3 Be7 6. h3 c5 7. Nc3 cxd4 8. exd4 0-0 9. Rc1 d5 10. Ne5 Nc6 11. Be3 Rc8 12. Be2 dxc4 13. Nxc4 Nb4 14. 0-0 Nbd5 15. Nxd5 Nxd5 16. Bf3 Bf6 17. Qb3 Rc7 18. Nd2 Qd7 19. Rxc7 Qxc7 20. Ne4 Rc8 21. Rc1 Qd7 22. Rxc8+ Bxc8 23. Nxf6+ Nxf6 24. Qa3 h6 25. Bf4 Qxd4 26. Bb8 a6 27. Bc7 b5 28. Qe7 Qd7 29. Qc5 Nd5 30. Be5 f6 31. Bd4 Bb7 32. b3 Qc7 33. Qa7 1/2-1/2

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.??.??"]
[Round "6"]
[White "Dzindzichashvili, Roman"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "2570"]
[BlackElo "2365"]
[PlyCount "59"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. e3 d5 5. d4 cxd4 6. exd4 Bb4 7. cxd5 Nxd5 8. Qc2 Nc6 9. Bd3 Nxc3 10. bxc3 Nxd4 11. Nxd4 Qxd4 12. Bb5+ Kf8 13. 0-0 Qe5 14. cxb4 Qxb5 15. Rd1 Bd7 16. a4 Qc6 17. Qd2 Ke8 18. Qb2 f6 19. b5 Qe4 20. Be3 b6 21. Rd4 Qb7 22. Rad1 Rd8 23. Rd6 Rf8 24. Qd4 e5 25. Qd3 Ke7 26. Bc1 Bxb5 27. axb5 Rxd6 28. Ba3 Rfd8 29. Bxd6+ Kf7 30. Qxh7 1-0

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "5"]
[White "Gruchacz, Robert"]
[Black "Burger, Karl"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2365"]
[BlackElo "2335"]
[PlyCount "20"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Ne4 6. Nxe4 Bxe4 7. e3 c5 8. Bd3 Bxf3 9. Qxf3 Nc6 10. Be4 Rc8 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "3"]
[White "Gruchacz, Robert"]
[Black "Dzindzichashvili, Roman"]
[Result "1/2-1/2"]
[ECO "C60"]
[WhiteElo "2365"]
[BlackElo "2570"]
[PlyCount "91"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. 0-0 Ng6 5. d4 exd4 6. Nxd4 Bc5 7. Nf5 0-0 8. Qh5 d6 9. Bg5 f6 10. Be3 Bxe3 11. Nxe3 Be6 12. Nc3 Qd7 13. f4 Bf7 14. Qf3 Rfe8 15. Rad1 a6 16. Be2 b5 17. a3 Nce7 18. Qg3 Qc6 19. Kh1 Rad8 20. Rd2 Qc5 21. Ng4 Kh8 22. f5 Ne5 23. Nxe5 dxe5 24. Rfd1 Rd6 25. Rxd6 cxd6 26. Qd3 Rd8 27. Bf3 Bc4 28. Qd2 a5 29. g4 b4 30. axb4 axb4 31. Na4 Qa5 32. b3 Bf7 33. g5 Ng8 34. Rg1 d5 35. Qg2 g6 36. fxg6 Bxg6 37. exd5 f5 38. Qg3 Qc7 39. d6 Qg7 40. Rd1 f4 41. Qg2 e4 42. Bxe4 Rxd6 43. Rf1 Qe5 44. Bxg6 Rxg6 45. Qf3 Qxg5 46. c3 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "9"]
[White "Gruchacz, Robert"]
[Black "Ermenkov, Evgenij"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2365"]
[BlackElo "2495"]
[PlyCount "25"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. 0-0 Ngf6 8. Qe2 Be7 9. c4 Bxe4 10. Bxe4 Nxe4 11. Qxe4 c6 12. b3 0-0 13. Bb2 1/2-1/2

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.??.??"]
[Round "7"]
[White "Gruchacz, Robert"]
[Black "Ginsburg, Mark"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "2365"]
[BlackElo "2370"]
[PlyCount "66"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. c4 d6 4. Nc3 Nd7 5. Nf3 e5 6. g3 Ngf6 7. Bg2 0-0 8. 0-0 a6 9. Qc2 Re8 10. Rd1 exd4 11. Nxd4 Ne5 12. Qe2 c6 13. h3 Qc7 14. Rb1 b5 15. cxb5 axb5 16. b4 Nfd7 17. Qc2 Qa7 18. Rb3 Bb7 19. Ndxb5 cxb5 20. Nxb5 Qxa2 21. Qxa2 Rxa2 22. Nxd6 Rb8 23. f4 Nc6 24. Nxb7 Rxb7 25. e5 Rxb4 26. Ra3 Rxa3 27. Bxa3 Rd4 28. Rc1 Nb4 29. Rc7 Bf8 30. Rc8 h5 31. Kh2 h4 32. Bb2 hxg3+ 33. Kxg3 Rd3+ 0-1

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "7"]
[White "Gruchacz, Robert"]
[Black "Matera, Salvatore Joseph"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2365"]
[PlyCount "41"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 Be7 8. dxe5 0-0 9. Bd5 Nc5 10. Nd4 Bb7 11. Nxc6 dxc6 12. Bf3 Qe8 13. Qe2 Rd8 14. Nd2 Bc8 15. Nb3 Nb7 16. Bf4 Be6 17. Rfd1 f5 18. exf6 Bxf6 19. Bxc7 Rxd1+ 20. Rxd1 Bxb2 21. c4 1/2-1/2

[Event "Pula tt"]
[Site "Pula"]
[Date "1980.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Matulovic, Milan"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2365"]
[BlackElo "2465"]
[PlyCount "81"]
[EventDate "1980.??.??"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 Nf6 8. 0-0 Ne5 9. h3 Bc5 10. f4 Nc6 11. Nf5 Ne7 12. Nxg7+ Kf8 13. Bxc5 Qxc5+ 14. Kh1 Kxg7 15. e5 Nfd5 16. Ne4 Qc6 17. Qh5 Ne3 18. Rf3 N3f5 19. g4 Nd4 20. Rf2 b6 21. Kh2 d5 22. Nd6 Ng6 23. c3 Qc5 24. Qg5 Rf8 25. Bxg6 fxg6 26. cxd4 Qxd4 27. Qe7+ Kg8 28. Raf1 Qc5 29. f5 exf5 30. gxf5 Qe3 31. Rf3 Qd2+ 32. R1f2 Qh6 33. f6 d4 34. e6 d3 35. f7+ Kh8 36. Ne8 g5 37. Qxf8+ Qxf8 38. e7 Qxf7 39. Rxf7 h6 40. Nf6 Bf5 41. Rxf5 1-0

[Event "USA"]
[Site "USA"]
[Date "1980.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Miles, Anthony John"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "2365"]
[BlackElo "2220"]
[PlyCount "96"]
[EventDate "1980.??.??"]
[EventType "game"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. h4 Rc8 11. Bb3 h5 12. 0-0-0 Ne5 13. Kb1 Nc4 14. Bxc4 Rxc4 15. Nde2 b5 16. Bh6 b4 17. Bxg7 Kxg7 18. Nd5 Nxd5 19. exd5 Qa5 20. Rhe1 Bf5 21. Nd4 Qxd5 22. Rxe7 Rfc8 23. Rxa7 Qc5 24. Nxf5+ Qxf5 25. Rc1 Qc5 26. Rd7 Rd4 27. Qe3 Rxh4 28. Qxc5 dxc5 29. c3 Re8 30. Rd5 Re2 31. Rxc5 Rxg2 32. Rb5 bxc3 33. bxc3 Rc4 34. Rb4 Rc8 35. a4 Rg3 36. Kb2 Rxf3 37. a5 Ra8 38. Ra1 Rf6 39. Kb3 g5 40. Rb5 Kg6 41. Kb4 h4 42. Rh1 Rh8 43. Rg1 Rf4+ 44. c4 g4 45. a6 h3 46. Ra5 h2 47. Rh1 g3 48. Ra2 Kg5 0-1

[Event "New York Heraldica"]
[Site "New York"]
[Date "1980.??.??"]
[Round "5"]
[White "Gruchacz, Robert"]
[Black "Shamkovich, Leonid Alexandrovic"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2365"]
[BlackElo "2515"]
[PlyCount "28"]
[EventDate "1980.05.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "8"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nf6 5. Be2 0-0 6. Nf3 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. Be3 Bd7 10. Qd2 a6 11. f3 Nxd4 12. Bxd4 Bc6 13. Rfd1 Rb8 14. Qe3 Nd7 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "Shamkovich, Leonid Alexandrovic"]
[Result "1/2-1/2"]
[ECO "B85"]
[WhiteElo "2365"]
[BlackElo "2515"]
[PlyCount "67"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. f4 a6 7. Be2 Qc7 8. 0-0 Be7 9. Kh1 Nc6 10. Be3 0-0 11. Qe1 Nxd4 12. Bxd4 b5 13. a3 Bb7 14. Qg3 Rfe8 15. Bd3 g6 16. f5 e5 17. Be3 Nh5 18. Qg4 Bf8 19. Qh4 Bg7 20. f6 Qd8 21. g4 Bxf6 22. Qf2 Nf4 23. Bxf4 exf4 24. Qxf4 Bxc3 25. Qxf7+ Kh8 26. bxc3 Qe7 27. Qxe7 Rxe7 28. a4 Rc8 29. axb5 axb5 30. Rf6 Bxe4+ 31. Bxe4 Rxe4 32. Rf7 Rxg4 33. Raa7 Rd8 34. Rxh7+ 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "10"]
[White "Keene, Raymond"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2460"]
[BlackElo "2365"]
[PlyCount "45"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 exf6 4. g3 Bd6 5. Bg2 c6 6. e3 Qb6 7. Qc1 0-0 8. Ne2 Na6 9. 0-0 Bf5 10. a3 Rad8 11. Nd2 Bb8 12. b4 Rfe8 13. Re1 Qc7 14. c4 Qd7 15. Nb3 b6 16. Qc3 Bh3 17. Bh1 h5 18. Rac1 Rc8 19. cxd5 cxd5 20. Qd3 Nc7 21. Nf4 Bf5 22. Qd2 h4 23. Bf3 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "2"]
[White "Mednis, Edmar John"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2485"]
[BlackElo "2365"]
[PlyCount "44"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. a3 a6 6. Rb1 Rb8 7. b4 cxb4 8. axb4 b5 9. c5 Bb7 10. Nf3 Nd4 11. e3 Nxf3+ 12. Bxf3 Bxc3 13. dxc3 d5 14. cxd6 Bxf3 15. Qxf3 Qxd6 16. 0-0 Nf6 17. e4 Qc6 18. Re1 0-0 19. Bg5 Rbc8 20. Re3 Qe6 21. Bxf6 exf6 22. Qf4 Rfd8 1/2-1/2

[Event "New York Inv"]
[Site "New York"]
[Date "1980.??.??"]
[Round "8"]
[White "Zaltsman, Vitaly F"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "E54"]
[WhiteElo "2460"]
[BlackElo "2365"]
[PlyCount "60"]
[EventDate "1980.04.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 cxd4 6. exd4 d5 7. Nf3 dxc4 8. Bxc4 0-0 9. 0-0 b6 10. Ne5 Bb7 11. Bg5 h6 12. Bh4 Be7 13. Qd3 Nc6 14. Rad1 Nb4 15. Qh3 Nbd5 16. f4 Rc8 17. Bb3 Nxc3 18. bxc3 Nd5 19. Be1 Rc7 20. f5 exf5 21. Qxf5 Bg5 22. Bg3 Qc8 23. Ng6 Ne3 24. Qe5 Nxd1 25. Nxf8 Kxf8 26. Qxc7 Qxc7 27. Bxc7 Be3+ 28. Kh1 Nf2+ 29. Kg1 Nh3+ 30. Kh1 Nf2+ 1/2-1/2

[Event "London Aaronson Masters"]
[Site "London"]
[Date "1979.??.??"]
[Round "7"]
[White "Bellin, Robert"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2425"]
[BlackElo "2355"]
[PlyCount "59"]
[EventDate "1979.04.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bb2 Bb7 5. Nc3 a6 6. Qe2 d6 7. d4 cxd4 8. Nxd4 Nd7 9. 0-0-0 Qg5+ 10. Kb1 Rc8 11. h4 Qa5 12. Rh3 b5 13. Re3 Kd8 14. a3 Qb6 15. Qh5 g6 16. Qf3 e5 17. Nd5 Bxd5 18. exd5 f5 19. Ne6+ Ke7 20. g4 Bh6 21. g5 Bf8 22. h5 Kf7 23. Qh3 Bg7 24. f4 Ne7 25. Nxg7 Kxg7 26. fxe5 Nxe5 27. Qg3 Kf7 28. Rxe5 dxe5 29. Qxe5 Rhg8 30. d6 1-0

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "6"]
[White "Chandler, Murray G"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2380"]
[BlackElo "2355"]
[PlyCount "101"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 Nb6 8. Bb5 dxe5 9. Nxe5 Bd7 10. Nc3 e6 11. Bxc6 Bxc6 12. Nxc6 bxc6 13. Qg4 h5 14. Qe4 Nd5 15. 0-0 Be7 16. Bf4 Nxf4 17. Qxf4 0-0 18. Qf3 g6 19. Rfd1 Rc8 20. Rac1 Qa5 21. a3 Rfd8 22. Rc2 Kg7 23. g3 Rc7 24. Kg2 Rcd7 25. Qxc6 Rxd4 26. Rxd4 Rxd4 27. Nb5 Rd5 28. Qc3+ Qxc3 29. Nxc3 Rc5 30. Rd2 Rc7 31. Rd3 Bf6 32. Na4 Rc4 33. b3 Rd4 34. Nc5 Rxd3 35. Nxd3 Kf8 36. f4 Be7 37. b4 f6 38. Kf3 Ke8 39. Ke4 Kd7 40. Kd4 Kc6 41. Kc4 Bd6 42. a4 Bc7 43. a5 Bb8 44. Nc5 e5 45. b5+ Kd6 46. fxe5+ Ke7 47. exf6+ Kf7 48. Nd7 Bc7 49. b6 Bxb6 50. Nxb6 Kxf6 51. a6 1-0

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "3"]
[White "Fedorowicz, John P"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "2405"]
[BlackElo "2355"]
[PlyCount "19"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 e6 5. d4 Nbd7 6. Bd3 Bb4 7. 0-0 0-0 8. a3 Ba5 9. b4 Bc7 10. Bb2 1/2-1/2

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "8"]
[White "Gruchacz, Robert"]
[Black "Benjamin, Joel"]
[Result "1/2-1/2"]
[ECO "C69"]
[WhiteElo "2355"]
[BlackElo "2320"]
[PlyCount "87"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 f6 6. d4 exd4 7. Nxd4 c5 8. Nb3 Qxd1 9. Rxd1 Bg4 10. f3 Bd7 11. Be3 b6 12. Nc3 0-0-0 13. Nd5 Ne7 14. c4 Ng6 15. Rac1 Be6 16. Nd2 Kb7 17. b3 a5 18. a4 Bd6 19. Nf1 c6 20. Nc3 Be5 21. Ne2 f5 22. f4 Bb2 23. Rb1 Rxd1 24. Rxd1 fxe4 25. Rd2 Ba1 26. Nfg3 Ne7 27. Nxe4 Nf5 28. Bxc5 Re8 29. Bd4 Bxd4+ 30. Nxd4 Kc7 31. Nxe6+ Rxe6 32. Ng5 Re3 33. Nxh7 Rxb3 34. Ng5 c5 35. Ne6+ Kc6 36. Nd8+ Kc7 37. Ne6+ Kc6 38. g4 Ne3 39. Nd8+ Kc7 40. Ne6+ Kc6 41. g5 Nxc4 42. Nd8+ Kc7 43. Ne6+ Kc6 44. Nd8+ 1/2-1/2

[Event "London Aaronson Masters"]
[Site "London"]
[Date "1979.??.??"]
[Round "8"]
[White "Gruchacz, Robert"]
[Black "Bennett, Terence B"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "2355"]
[BlackElo "2290"]
[PlyCount "29"]
[EventDate "1979.04.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Qg4 Ne7 6. Nf3 0-0 7. Bd3 Nf5 8. Bg5 Qa5 9. Bf6 Bxc3+ 10. bxc3 Qxc3+ 11. Ke2 Kh8 12. Bxf5 gxf6 13. exf6 Rg8 14. Ng5 Rg6 15. Nxf7+ 1-0

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "Diesen, Mark C"]
[Result "1/2-1/2"]
[ECO "B82"]
[WhiteElo "2355"]
[BlackElo "2460"]
[PlyCount "62"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. Nge2 Nc6 4. d4 cxd4 5. Nxd4 d6 6. Be3 Nf6 7. f4 e5 8. fxe5 Ng4 9. Bg1 Ngxe5 10. Qd2 Be7 11. 0-0-0 Nxd4 12. Bxd4 0-0 13. Nd5 Bg5 14. Be3 Bxe3 15. Nxe3 Qh4 16. Qxd6 Qxe4 17. Qd4 Qxd4 18. Rxd4 Be6 19. Re4 f6 20. Bc4 Kf7 21. Bd5 Bxd5 22. Nxd5 Rfd8 23. Rd1 Rac8 24. Nc3 Rxd1+ 25. Kxd1 Ke6 26. Ra4 Rd8+ 27. Ke2 Nc6 28. Re4+ Kf5 29. Ke3 Ne5 30. Rf4+ Ke6 31. Rb4 Rd7 1/2-1/2

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "7"]
[White "Gruchacz, Robert"]
[Black "Fuster, Geza"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2355"]
[PlyCount "45"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. d4 cxd4 5. Nxd4 Qc7 6. Be3 a6 7. f4 b5 8. Bd3 Nxd4 9. Bxd4 Qxf4 10. Rf1 Qh4+ 11. g3 Qe7 12. e5 f5 13. Bxf5 Bb7 14. Qh5+ Kd8 15. Be4 Bxe4 16. Nxe4 Kc7 17. Bc5 Qxc5 18. Nxc5 Bxc5 19. Qf3 Rd8 20. Qc3 Kb6 21. b4 Be7 22. a4 Nh6 23. Qd4+ 1-0

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "10"]
[White "Gruchacz, Robert"]
[Black "Meyer, J."]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2355"]
[PlyCount "31"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 Be7 6. 0-0 d5 7. b3 0-0 8. Bb2 Nbd7 9. Ne5 Ne4 10. Nxe4 dxe4 11. Bb5 Nxe5 12. dxe5 Qxd1 13. Rfxd1 Rfd8 14. Kf1 Kf8 15. Bc3 Rxd1+ 16. Rxd1 1/2-1/2

[Event "Lloyds Bank op-03"]
[Site "London"]
[Date "1979.??.??"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "Povah, Nigel Edward"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2355"]
[BlackElo "2325"]
[PlyCount "68"]
[EventDate "1979.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Nxe7 Qxe7 12. c3 h6 13. Be3 Be6 14. Bd3 d5 15. exd5 Nxd5 16. Be4 Rd8 17. Qf3 0-0 18. 0-0-0 Nxc3 19. Bxc6 Nxd1 20. Rxd1 Rxd1+ 21. Kxd1 Qd6+ 22. Ke1 f5 23. Bb7 Rd8 24. g3 e4 25. Qe2 Qc7 26. Bxa6 Qa5+ 27. Bd2 Qxa6 28. Qxb5 Qd6 29. Qb4 Qd5 30. Qa5 Qd3 31. Qc3 Bxa2 32. Nc2 Bb3 33. Qxd3 Rxd3 34. Ne3 Be6 0-1

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "4"]
[White "Gruchacz, Robert"]
[Black "Zuckerman, Bernard"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2355"]
[BlackElo "2480"]
[PlyCount "31"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 Nb6 8. Bb5 dxe5 9. Nxe5 Bd7 10. Nc3 e6 11. Qg4 h5 12. Qe4 Nxe5 13. dxe5 Bxb5 14. Nxb5 Nd5 15. 0-0 Qd7 16. Nd4 1/2-1/2

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "9"]
[White "La Rota, Fabio"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "B26"]
[WhiteElo "2310"]
[BlackElo "2355"]
[PlyCount "18"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Nd4 7. Qd2 Qa5 8. f4 e6 9. Nf3 Ne7 1/2-1/2

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "2"]
[White "Pavlovic, Slobodan"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "A57"]
[BlackElo "2355"]
[PlyCount "64"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. a4 bxc4 5. Nc3 e5 6. e4 d6 7. Bxc4 Be7 8. h3 0-0 9. g4 Ne8 10. Nf3 Na6 11. Qe2 Nb4 12. 0-0 h5 13. Ne1 Bg5 14. Ng2 hxg4 15. hxg4 Bxc1 16. Raxc1 Qg5 17. f3 g6 18. Qe3 Qxe3+ 19. Nxe3 a6 20. Kf2 Kg7 21. Rh1 Rh8 22. Rxh8 Kxh8 23. Kg3 Ra7 24. Rh1+ Kg8 25. a5 Bd7 26. f4 exf4+ 27. Kxf4 Bc8 28. g5 Re7 29. Be2 Kg7 30. Nc4 Bb7 31. Rh3 Bc8 32. Rg3 Bd7 1/2-1/2

[Event "London Aaronson Masters"]
[Site "London"]
[Date "1979.??.??"]
[Round "1"]
[White "Speelman, Jonathan S"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2470"]
[BlackElo "2355"]
[PlyCount "91"]
[EventDate "1979.04.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 Nc6 7. Qe2 e5 8. Nb3 a5 9. Nd5 Nxd5 10. exd5 Ne7 11. Qb5+ Bd7 12. Bb6 Bxb5 13. Bxb5+ Qd7 14. Bxd7+ Kxd7 15. Bxa5 Nxd5 16. 0-0-0 Nf4 17. g3 Ne6 18. Kb1 Be7 19. Rd5 Kc6 20. c4 b6 21. Bb4 Nc7 22. Rd2 Rhe8 23. Rhd1 Rad8 24. Na1 d5 25. cxd5+ Nxd5 26. Bxe7 Rxe7 27. Nc2 Red7 28. Kc1 Kb7 29. Nb4 Nf6 30. Rxd7+ Nxd7 31. Rd5 Rc8+ 32. Kd2 Rc7 33. f3 f6 34. Rd6 Nc5 35. Ke3 Rf7 36. Nd5 Rd7 37. Rxb6+ Ka7 38. b4 Rxd5 39. bxc5 Rxc5 40. Re6 Rc7 41. h4 Rd7 42. h5 h6 43. a4 Kb7 44. a5 Ka7 45. g4 Kb7 46. a6+ 1-0

[Event "Marshall op"]
[Site "New York"]
[Date "1979.??.??"]
[Round "5"]
[White "Sulman, Robert M"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2290"]
[BlackElo "2355"]
[PlyCount "93"]
[EventDate "1979.03.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 a6 5. g3 d5 6. d3 b5 7. Qe2 Nd4 8. Nxd4 cxd4 9. Nd1 dxe4 10. dxe4 Bb7 11. Bg2 Bc5 12. Nf2 Ne7 13. Nd3 Bb6 14. 0-0 0-0 15. Bd2 Rc8 16. Bb4 Re8 17. Bxe7 Rxe7 18. e5 Bd5 19. h3 Rec7 20. Rf2 Bxg2 21. Rxg2 Qd5 22. a3 Rxc2 23. Qxc2 Rxc2 24. Rxc2 h5 25. Kh2 Qf3 26. Rd2 h4 27. gxh4 Ba5 28. b4 Bd8 29. Rg1 Bxh4 30. Rg4 Qe3 31. Rc2 Qxd3 32. Rc8+ Kh7 33. Rxh4+ Kg6 34. Rg4+ Kf5 35. Rc7 Qd2+ 36. Kg3 Qe1+ 37. Kg2 d3 38. Rxf7+ Ke4 39. f5+ Kxe5 40. fxe6 Kxe6 41. Rfxg7 Qe2+ 42. Kg1 Qe3+ 43. Kf1 Qxh3+ 44. Kf2 Qh2+ 45. Ke3 Qe2+ 46. Kd4 d2 47. R7g6+ 1/2-1/2

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.10"]
[Round "9"]
[White "Balinas, Rosendo Carrean"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2440"]
[BlackElo "2400"]
[PlyCount "31"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. a4 a6 8. Na3 Be6 9. Bc4 Rc8 10. Bg5 Be7 11. Bxf6 Bxf6 12. Nd5 Bg5 13. 0-0 0-0 14. c3 g6 15. Qe2 Kh8 16. Rfd1 1/2-1/2

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.09"]
[Round "8"]
[White "Gruchacz, Robert"]
[Black "Fedorowicz, John P"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2400"]
[BlackElo "2360"]
[PlyCount "20"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 e6 3. Nbc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. a3 d6 7. Be3 Be7 8. Be2 0-0 9. 0-0 a6 10. f4 Qc7 1/2-1/2

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.08"]
[Round "7"]
[White "Gruchacz, Robert"]
[Black "Morris, Walter D"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "2400"]
[BlackElo "2325"]
[PlyCount "80"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Bb4 4. f4 d6 5. Nf3 0-0 6. 0-0 Nc6 7. d3 Na5 8. Bb3 Nxb3 9. axb3 Bxc3 10. bxc3 Qe7 11. fxe5 dxe5 12. Qe1 Ne8 13. Kh1 f6 14. Ba3 Nd6 15. Qh4 Re8 16. Nd2 b6 17. Bxd6 Qxd6 18. Rf2 Be6 19. c4 Rf8 20. g4 c6 21. Qg3 a5 22. Nf3 Bd7 23. h3 b5 24. cxb5 cxb5 25. Ne1 a4 26. bxa4 bxa4 27. c4 Rab8 28. Rfa2 Rb3 29. Qf2 Rfb8 30. Kg2 R8b7 31. Qd2 Qd4 32. Qa5 Bc6 33. Rf2 Qxa1 34. Qd8+ Kf7 35. Nf3 Rb2 36. Nxe5+ Ke6 37. Nxc6 Rxf2+ 38. Kxf2 Rb2+ 39. Ke3 Qg1+ 40. Kf3 Qf2# 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.07"]
[Round "6"]
[White "Garcia, Gildardo"]
[Black "Gruchacz, Robert"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2365"]
[BlackElo "2400"]
[PlyCount "68"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. exf5 Bxf5 12. c3 Bg7 13. Nc2 0-0 14. Nce3 Be6 15. a4 b4 16. Bc4 bxc3 17. bxc3 e4 18. 0-0 Ne5 19. Qe2 Qg5 20. Kh1 Kh8 21. Bxa6 Rg8 22. Nc7 Ra7 23. Nxe6 fxe6 24. Bb5 d5 25. Rac1 Bf8 26. f4 exf3 27. gxf3 Ng6 28. Ng2 Nf4 29. Nxf4 Qxf4 30. Qf2 Rag7 31. Qd4 Qf5 32. Be2 e5 33. Qe3 Qh3 34. Rg1 Bc5 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.06"]
[Round "5"]
[White "Odendahl, Steven M"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "A37"]
[BlackElo "2400"]
[PlyCount "59"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. c4 e6 6. e3 Nge7 7. Nc3 Nf5 8. Ne4 d6 9. d4 cxd4 10. Nxd4 Ncxd4 11. exd4 0-0 12. Bg5 f6 13. Bd2 Qb6 14. Bc3 d5 15. cxd5 exd5 16. Nc5 Rd8 17. Re1 Bf8 18. Qa4 Qd6 19. Qb3 Qc6 20. Rac1 Bxc5 21. dxc5 Kf7 22. Ba5 Rd7 23. Rcd1 Qxc5 24. Rxd5 Rxd5 25. Bxd5+ Kg7 26. Bb4 Qd4 27. Re8 h5 28. Bf8+ Kh7 29. Bf3 Qd7 30. Re7+ 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.05"]
[Round "4"]
[White "Gruchacz, Robert"]
[Black "Mestrovic, Zvonimir"]
[Result "0-1"]
[ECO "C62"]
[WhiteElo "2400"]
[BlackElo "2435"]
[PlyCount "84"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 d6 3. d4 e5 4. Bb5 Bg4 5. dxe5 dxe5 6. Qd5 Qxd5 7. exd5 Bxf3 8. gxf3 a6 9. dxc6 axb5 10. cxb7 Rb8 11. a4 b4 12. Be3 Rxb7 13. Nd2 Bd6 14. Nc4 Ne7 15. Ke2 Nf5 16. Rhd1 Rb8 17. a5 Ke7 18. a6 Rb5 19. h3 Ra8 20. Ra4 f6 21. Rg1 g5 22. Rg4 h5 23. Nxd6 Nxd6 24. Rgxb4 Rxa6 25. b3 Rxb4 26. Rxb4 Ra2 27. Kd3 Ra1 28. h4 Rg1 29. hxg5 fxg5 30. Rb8 h4 31. Rh8 Nf7 32. Bxg5+ Nxg5 33. Rxh4 Ne6 34. Rh7+ Kf6 35. b4 Rb1 36. c3 Rb2 37. Rh2 Kf5 38. Rh5+ Ng5 39. Rh6 Rxf2 40. Rc6 Ne6 41. Ke3 Ra2 42. Rc4 Nf4 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.04"]
[Round "3"]
[White "Westerinen, Heikki MJ"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2450"]
[BlackElo "2400"]
[PlyCount "95"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Bf8 9. Rb1 a6 10. Bd3 Qc7 11. f4 Nc6 12. 0-0 b5 13. a4 bxa4 14. f5 Rb8 15. Rxb8 Nxb8 16. Qh5 a3 17. f6 g6 18. Bxg6 d5 19. exd6 Bxd6 20. Be4 Qc5 21. Qe2 h5 22. Kh1 Kf8 23. Nb3 Qc7 24. c4 Nd7 25. Ba5 Qb8 26. Qd2 a2 27. Bc3 Qc7 28. Ba5 Qb8 29. Qg5 Ke8 30. c5 Bxc5 31. Bc6 Bb4 32. Rd1 Bxa5 33. Qxa5 Qf4 34. Qc3 Kf8 35. Bxd7 Bxd7 36. Qc5+ Kg8 37. Rxd7 Qxf6 38. Rd1 h4 39. h3 Rh6 40. Qc8+ Kg7 41. Qxa6 Rg6 42. Qf1 Qc3 43. Qe2 Rg3 44. Ra1 Rxh3+ 45. gxh3 Qxh3+ 46. Qh2 Qc3 47. Rg1+ Kf8 48. Qd6+ 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.03"]
[Round "2"]
[White "Gruchacz, Robert"]
[Black "Lombardy, William James"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "2400"]
[BlackElo "2540"]
[PlyCount "87"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 e5 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Qd6 6. Na3 Qe6 7. b3 Ne7 8. Nc4 f6 9. d4 Ng6 10. dxe5 fxe5 11. Ng5 Qf6 12. Qh5 Be7 13. Nf3 Bd6 14. Bb2 0-0 15. Ncxe5 Nf4 16. Qg5 Bh3 17. Qxf6 gxf6 18. gxh3 fxe5 19. Nxe5 Rfe8 20. Ng4 Kf7 21. f3 Nxh3+ 22. Kh1 Ke6 23. Nf2 Nf4 24. Nd3 Rf8 25. Nxf4+ Rxf4 26. Bc1 Rh4 27. f4 Rf8 28. e5 Bc5 29. Bd2 Kf5 30. Rae1 Rg8 31. b4 Be7 32. Rg1 Rg6 33. Re2 Rhh6 34. Rgg2 Rxg2 35. Kxg2 Rg6+ 36. Kf3 c5 37. bxc5 Bxc5 38. Be3 Bxe3 39. Rxe3 Rc6 40. c3 Rc4 41. e6 Rxf4+ 42. Ke2 Rg4 43. e7 Rg2+ 44. Kd3 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1978.04.02"]
[Round "1"]
[White "Zaltsman, Vitaly F"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "A36"]
[BlackElo "2400"]
[PlyCount "93"]
[EventDate "1978.04.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nc6 5. Ne2 e5 6. Nbc3 d6 7. d3 Nge7 8. 0-0 0-0 9. a3 Be6 10. Nd5 Qd7 11. Nec3 Bh3 12. Bxh3 Qxh3 13. Rb1 Nxd5 14. Nxd5 Rad8 15. b4 Rd7 16. Bd2 h5 17. Qf3 Qe6 18. Bc3 f5 19. Qe2 Ne7 20. e4 f4 21. f3 g5 22. Kh1 Ng6 23. Rg1 Bh6 24. g4 hxg4 25. Rxg4 Rg7 26. Rbg1 Kf7 27. Be1 Rh8 28. Qb2 b6 29. R1g2 Ke8 30. bxc5 dxc5 31. a4 Kf7 32. Qb5 Kg8 33. Ra2 Kh7 34. a5 Rb7 35. axb6 axb6 36. Ra6 Rhb8 37. Bf2 Kg7 38. h4 gxh4 39. Bxc5 Kf7 40. Bf2 Bf8 41. c5 bxc5 42. Qxb7+ Rxb7 43. Rxe6 Kxe6 44. Rxg6+ Kf7 45. Rf6+ Kg7 46. Rb6 Ra7 47. Bxh4 1-0

[Event "Christmas Congress 1977/78-53Challenger"]
[Site "Hastings"]
[Date "1978.01.07"]
[Round "9"]
[White "Gruchacz, Robert"]
[Black "Seirawan, Yasser"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2400"]
[BlackElo "2400"]
[PlyCount "93"]
[EventDate "1977.12.29"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 b6 4. c3 Qd7 5. a4 Ne7 6. a5 bxa5 7. Rxa5 c5 8. Ra1 Nec6 9. Nf3 a5 10. Be2 Ba6 11. 0-0 Qb7 12. Na3 cxd4 13. cxd4 Be7 14. Nc2 0-0 15. Nfe1 Qb6 16. Bxa6 Nxa6 17. Qg4 Kh8 18. Nf3 Rac8 19. Ne3 Nab4 20. Rd1 Qa6 21. Ne1 f5 22. exf6 Rxf6 23. N3c2 Rg6 24. Qh5 Nxc2 25. Nxc2 Qc4 26. Ne3 Qb5 27. Nc2 Rf8 28. Ne1 a4 29. Rd3 Na5 30. Rh3 Kg8 31. Qxh7+ Kf7 32. Qh5 Rh8 33. Rf3+ Bf6 34. Qxh8 Qe2 35. Be3 Qxb2 36. Rc1 Nc4 37. Qc8 a3 38. Qd7+ Kf8 39. Qc8+ Kf7 40. Qd7+ Kf8 41. Qd8+ Kf7 42. Nd3 Rxg2+ 43. Kxg2 Nxe3+ 44. Rxe3 Qxd4 45. Rc7+ Kg6 46. Qe8+ Kg5 47. Rg3+ 1-0

[Event "New York GHI"]
[Site "New York"]
[Date "1978.??.??"]
[Round "?"]
[White "Zapata, Alonso"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2355"]
[BlackElo "2400"]
[PlyCount "73"]
[EventDate "1978.07.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. 0-0 Be7 8. Be3 0-0 9. f4 Nc6 10. Qe1 Nxd4 11. Bxd4 b5 12. a3 Bb7 13. Qg3 Qc7 14. Bd3 Bc6 15. Rae1 a5 16. Kh1 b4 17. axb4 axb4 18. Nd1 Ra5 19. Ne3 g6 20. Nc4 Ra2 21. Qh3 Qd7 22. e5 dxe5 23. Bxe5 Qb7 24. Re3 Rd8 25. Rg3 Kf8 26. Qh6+ Ke8 27. Bxf6 Bxf6 28. Qxh7 b3 29. Ne5 bxc2 30. Qg8+ Ke7 31. Qxf7+ Kd6 32. Qxf6 Rc8 33. Nc4+ Kc7 34. Qe5+ Kd8 35. Bxc2 Bxg2+ 36. Rxg2 Rxc4 37. Rd1+ 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1976.03.13"]
[Round "7"]
[White "Fritzinger, Dennis"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "B40"]
[PlyCount "67"]
[EventDate "1976.03.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. Nxc6 dxc6 7. 0-0 e5 8. Nd2 Bc5 9. Nc4 Qc7 10. c3 Bg4 11. Qc2 Nh5 12. b4 Be7 13. Re1 Be6 14. a4 0-0 15. a5 Rae8 16. Be3 a6 17. Bb6 Qb8 18. Ne3 g6 19. Rab1 Nf4 20. Bf1 Bc8 21. Red1 Ne6 22. Rd2 Bd8 23. Bxd8 Rxd8 24. Rbd1 Rxd2 25. Rxd2 Qc7 26. Qd1 Ng5 27. f3 b5 28. axb6 Qxb6 29. Qe1 a5 30. h4 Ne6 31. bxa5 Qxa5 32. Rd1 Qc5 33. Kh2 Nc7 34. Qd2 1/2-1/2

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1976.03.12"]
[Round "6"]
[White "Gruchacz, Robert"]
[Black "Sisniega, Marcel"]
[Result "0-1"]
[ECO "B56"]
[PlyCount "130"]
[EventDate "1976.03.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Bb5+ Bd7 7. Bxd7+ Qxd7 8. Nde2 Nc6 9. Bg5 Be7 10. Bxf6 Bxf6 11. Nd5 Be7 12. Ng3 g6 13. Qd3 0-0 14. 0-0 Rac8 15. Rad1 Bg5 16. Ne2 Kh8 17. f3 f5 18. Rf2 Rf7 19. c3 Rcf8 20. Ng3 Nd8 21. Rc2 Ne6 22. b4 Bh6 23. Nf1 fxe4 24. Qxe4 Ng5 25. Qh4 Kg7 26. Ng3 Rxf3 27. Qc4 R3f7 28. Qd3 Qc6 29. Rf1 Ne6 30. Rxf7+ Rxf7 31. Ne4 Nd4 32. Rf2 Rxf2 33. Nxf2 Qxd5 34. cxd4 Qxd4 35. Qxd4 exd4 36. Ne4 Bf4 37. g3 Be5 38. Kf2 h6 39. Kf3 Kf7 40. Nf2 Ke6 41. Ke4 Bg7 42. Nd3 Be5 43. a4 h5 44. b5 g5 45. Nb4 g4 46. a5 d5+ 47. Nxd5 d3 48. Ne3 d2 49. Kd3 Kd6 50. Kxd2 Kc5 51. b6 a6 52. Kd3 Bd4 53. Nf5 Bg1 54. Ng7 Bxh2 55. Nxh5 Kb5 56. Ke2 Kxa5 57. Kf2 Kxb6 58. Nf6 a5 59. Nxg4 Bxg3+ 60. Kxg3 a4 61. Kf3 a3 62. Ne3 Kc5 63. Ke2 a2 64. Nc2 Kc4 65. Kd2 Kb3 0-1

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1976.03.11"]
[Round "5"]
[White "Watson, John L"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "A54"]
[PlyCount "89"]
[EventDate "1976.03.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. e3 c6 4. Nf3 d6 5. d4 Nbd7 6. Be2 Be7 7. 0-0 0-0 8. Qc2 Re8 9. b4 Qc7 10. a4 Nf8 11. b5 Bg4 12. a5 Bd8 13. a6 e4 14. axb7 Qxb7 15. bxc6 Qxc6 16. d5 Qc8 17. Nd4 Bxe2 18. Qxe2 a6 19. Ba3 Bc7 20. f4 Ng6 21. h3 h5 22. Kh2 Qd7 23. g3 Bb6 24. Nc6 Ne7 25. Na4 Bc7 26. Nxe7+ Qxe7 27. Bb2 Rab8 28. Bd4 Rb4 29. Bc3 Rb7 30. Rfb1 Reb8 31. Rxb7 Rxb7 32. Bd4 Bd8 33. Nc3 Bb6 34. Rxa6 Bxd4 35. Ra8+ Kh7 36. exd4 Rb3 37. Qc2 Rb4 38. Nd1 Qc7 39. Ne3 Qb6 40. c5 Qb5 41. Ra2 Rxd4 42. c6 Ne8 43. c7 Nxc7 44. Qxc7 Rd3 45. Qxf7 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1976.03.10"]
[Round "4"]
[White "Gruchacz, Robert"]
[Black "Barnes, Craig N"]
[Result "1-0"]
[ECO "B29"]
[BlackElo "2280"]
[PlyCount "183"]
[EventDate "1976.03.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Qxd4 e6 6. Bc4 Nc6 7. Qe4 Nb6 8. Bb3 d5 9. exd6 Bxd6 10. c3 Nd7 11. 0-0 Be7 12. Bc2 Nf6 13. Qe2 Qc7 14. Re1 0-0 15. Nbd2 Bd7 16. Nc4 Rfd8 17. Nce5 Nxe5 18. Nxe5 Rac8 19. Bg5 Be8 20. Rad1 Qa5 21. Bb3 Rxd1 22. Qxd1 Qb5 23. Qe2 Qxe2 24. Rxe2 Rd8 25. Rd2 Rxd2 26. Bxd2 Bc5 27. Bc2 Kf8 28. b4 Bd6 29. Nc4 Bb8 30. Ne3 Bc6 31. f3 Nd5 32. c4 Nxe3 33. Bxe3 f5 34. f4 Kf7 35. g3 h6 36. Kf2 a6 37. Bd4 g5 38. Ke3 Bd6 39. Bc3 Kg6 40. Bd1 Be4 41. a4 Bc7 42. b5 axb5 43. axb5 Bb6+ 44. Bd4 Bd8 45. c5 Bd5 46. Be5 g4 47. Ba4 Kf7 48. b6 h5 49. Bd4 Ke7 50. c6 bxc6 51. b7 Bc7 52. Be5 Bb6+ 53. Kd3 Ba7 54. b8Q Bxb8 55. Bxb8 Kd7 56. Kd4 Ba2 57. Ba7 Kc7 58. Bc5 Kd7 59. Ke5 Bc4 60. Kf6 Bd5 61. Bc2 Bc4 62. Kg5 Ke8 63. Kg6 Ba2 64. Bd3 Bb3 65. Bf1 Bd5 66. Ba6 Bb3 67. Bc8 Kd8 68. Bb7 Kd7 69. Kxh5 Bc4 70. Bb6 Bd3 71. Kg5 Be2 72. Kf6 Bd3 73. Ke5 Be2 74. Kd4 Bf1 75. Kc5 Bb5 76. Ba5 Ba4 77. Ba6 Bd1 78. Bc3 Bc2 79. Be5 Bd1 80. Kb6 Bb3 81. Kb7 Ba2 82. Kb8 Bd5 83. Bc8+ Kd8 84. Bf6+ Ke8 85. Kc7 Kf7 86. Bd4 Ke7 87. Bd7 Be4 88. Bxc6 Bd3 89. Bc5+ Kf7 90. Bd6 Bc2 91. Kd8 Bb3 92. Be8+ 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1976.03.09"]
[Round "3"]
[White "Rogoff, Kenneth"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2480"]
[PlyCount "82"]
[EventDate "1976.03.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. 0-0 Nc6 6. cxd5 exd5 7. d4 cxd4 8. Nxd4 Bc5 9. Nxc6 bxc6 10. Qc2 Qe7 11. Bg5 Bb7 12. Bxf6 gxf6 13. Nc3 0-0 14. e3 Rac8 15. Rfd1 Rfd8 16. Na4 Bd6 17. Rd4 f5 18. Qxf5 Rc7 19. Rc1 Be5 20. Rdd1 Bg7 21. Qc2 Qe5 22. Nc5 Bc8 23. b3 Rd6 24. Nd3 Qe8 25. Nf4 Be5 26. Qc5 Rh6 27. b4 Bf5 28. Rd2 Bd6 29. Qc3 Be5 30. Qb3 Re7 31. Ne2 Bd6 32. Nd4 Bd7 33. Rdc2 Bb8 34. b5 cxb5 35. Bxd5 Re5 36. Bf3 Bd6 37. Qd3 Rg5 38. Bc6 Rgh5 39. Nf3 Bxc6 40. Rxc6 Qd7 41. Qe4 f6 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1976.03.08"]
[Round "2"]
[White "Najdorf, Miguel"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "2510"]
[PlyCount "85"]
[EventDate "1976.03.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. 0-0 Nf6 5. d3 e6 6. Nbd2 Be7 7. b3 Qc7 8. Bb2 e5 9. e4 d4 10. c3 0-0 11. cxd4 cxd4 12. Rc1 Bd7 13. a3 Qb8 14. h3 Ne8 15. b4 a6 16. Nb3 f6 17. Nc5 Bxc5 18. Rxc5 Nc7 19. Nh4 Na7 20. Rc1 Ncb5 21. f4 Qd6 22. Qh5 Nc3 23. Rf2 Rac8 24. Rcf1 Nc6 25. Nf3 Be8 26. Qg4 Bd7 27. Qh4 a5 28. bxa5 Ra8 29. Bc1 Rxa5 30. Kh1 Qc5 31. Nd2 Raa8 32. Bf3 b5 33. Bg4 Rad8 34. Nf3 Na4 35. Bxd7 Rxd7 36. fxe5 Nxe5 37. Nxe5 Qxe5 38. Rf5 Qc7 39. e5 Qc3 40. exf6 Qxd3 41. f7+ Rdxf7 42. Rxf7 Rxf7 43. Qd8+ 1-0

[Event "Lone Pine op Louis D. Statham Masters"]
[Site "Lone Pine"]
[Date "1976.03.07"]
[Round "1"]
[White "Gruchacz, Robert"]
[Black "Biyiasas, Peter"]
[Result "1-0"]
[ECO "C68"]
[BlackElo "2460"]
[PlyCount "89"]
[EventDate "1976.03.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Ne7 6. Nxe5 Qd4 7. Nf3 Qxe4 8. Re1 Qg6 9. Ne5 Qf6 10. Nc3 Bf5 11. g4 Bg6 12. d4 h5 13. Ne4 Bxe4 14. Rxe4 0-0-0 15. gxh5 Qe6 16. Qf3 f5 17. Re2 Qf6 18. c3 g6 19. b4 Rxh5 20. a4 Bg7 21. b5 c5 22. bxa6 Qxa6 23. Nf7 Rd7 24. Bg5 Bf6 25. Bxf6 Qxf6 26. Ne5 Rd5 27. Nd3 Qh4 28. Rxe7 Qxh2+ 29. Kf1 Rd8 30. Nxc5 c6 31. Rae1 Rg5 32. Rxb7 Rg1+ 33. Ke2 Rxe1+ 34. Kxe1 Qg1+ 35. Kd2 Rd5 36. Qg3 Qxg3 37. fxg3 Rxc5 38. Rg7 Ra5 39. Rxg6 Kd7 40. Rf6 Rxa4 41. Rxf5 Ra2+ 42. Kd3 Ke6 43. Rc5 Kd6 44. Rg5 Rf2 45. Rg6+ 1-0

[Event "Phoenix Del Web Townhouse Summer"]
[Site "Phoenix"]
[Date "1976.??.??"]
[Round "?"]
[White "Brown, James1111"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "B85"]
[PlyCount "78"]
[EventDate "1976.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. Be3 Be7 8. 0-0 0-0 9. f4 Nc6 10. Bf3 Qc7 11. Qe2 Nxd4 12. Bxd4 e5 13. Be3 exf4 14. Bxf4 Re8 15. Kh1 Be6 16. Rfd1 Nd7 17. Qd2 Ne5 18. Be2 Rac8 19. Rac1 Bf8 20. Nd5 Bxd5 21. exd5 g6 22. c4 Qe7 23. b3 Bg7 24. Rf1 Nd7 25. Rce1 Be5 26. Bg5 Qf8 27. Bh6 Bg7 28. Bxg7 Qxg7 29. Bg4 f5 30. Bf3 Ne5 31. h3 Qc7 32. Be2 a5 33. g4 Rf8 34. gxf5 Qe7 35. Bg4 Qh4 36. Qf2 Qxf2 37. Rxf2 Rf6 38. Ref1 Rcf8 39. Kg2 Nd3 1/2-1/2

[Event "San Francisco Golden Gate op"]
[Site "San Francisco"]
[Date "1976.??.??"]
[Round "4"]
[White "Christiansen, Larry Mark"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2400"]
[PlyCount "75"]
[EventDate "1976.12.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Be2 a6 7. f4 Nc6 8. Be3 Be7 9. 0-0 0-0 10. a4 Qc7 11. Qe1 Re8 12. Qg3 Nxd4 13. Bxd4 e5 14. fxe5 dxe5 15. Rf2 Bd8 16. Be3 Kh8 17. Raf1 Be6 18. h4 Ng8 19. Nd5 Bxd5 20. exd5 f6 21. c4 Qa5 22. c5 Qxa4 23. d6 Qb3 24. Bd1 Qe6 25. h5 Rb8 26. Qg4 Qxg4 27. Bxg4 g6 28. Bd7 Rf8 29. g4 Kg7 30. b4 Nh6 31. g5 Nf5 32. Bxf5 gxf5 33. Rxf5 Rc8 34. h6+ Kg6 35. Rxe5 f5 36. Re6+ Kh5 37. d7 Rc6 38. Re8 1-0

[Event "San Francisco Golden Gate op"]
[Site "San Francisco"]
[Date "1976.??.??"]
[Round "6"]
[White "Gruchacz, Robert"]
[Black "Barnes, Craig N"]
[Result "0-1"]
[ECO "B27"]
[BlackElo "2280"]
[PlyCount "50"]
[EventDate "1976.12.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Bb5 Nc6 6. Qa4 Bg7 7. Nc3 0-0 8. e5 Ne8 9. Bf4 a6 10. Bg3 axb5 11. Qxa8 Nc7 12. Qa3 b4 13. Qb3 bxc3 14. Qxc3 d6 15. 0-0-0 Bg4 16. Qb3 Bxf3 17. gxf3 Nxe5 18. Qxb7 Ne6 19. Bxe5 Bxe5 20. Qa7 Qe8 21. Rd3 Nc5 22. Ra3 Qb5 23. b3 Rc8 24. Kd1 Qb4 25. Ke2 Ne6 0-1

[Event "Phoenix Del Web Townhouse Summer"]
[Site "Phoenix"]
[Date "1976.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Lewter, V Gene"]
[Result "1/2-1/2"]
[ECO "B02"]
[PlyCount "51"]
[EventDate "1976.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 e6 4. Nxd5 exd5 5. Qf3 c6 6. d4 d6 7. Qg3 dxe5 8. dxe5 Nd7 9. Nf3 Nc5 10. Nd4 Ne4 11. Qe3 Bc5 12. Bd3 Bb4+ 13. c3 Nxc3 14. Bd2 c5 15. bxc3 cxd4 16. cxd4 Qa5 17. Bxb4 Qxb4+ 18. Qd2 Qxd2+ 19. Kxd2 Bd7 20. Rac1 0-0 21. Rc5 f6 22. exf6 Rxf6 23. f3 Rb6 24. Rb1 Rxb1 25. Bxb1 Bc6 26. Bd3 1/2-1/2

[Event "Phoenix Del Web Townhouse Summer"]
[Site "Phoenix"]
[Date "1976.??.??"]
[Round "?"]
[White "Gruchacz, Robert"]
[Black "Roy, David W"]
[Result "0-1"]
[ECO "B96"]
[PlyCount "96"]
[EventDate "1976.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Bd7 8. Nf3 Qa5 9. Bd3 Bc6 10. Qd2 Nbd7 11. 0-0 Be7 12. Kh1 h6 13. Bh4 Qh5 14. Bg3 g5 15. f5 e5 16. Qe1 Nc5 17. b4 Nxd3 18. cxd3 Nd7 19. a4 b6 20. Nd2 0-0 21. Nc4 Rab8 22. Rc1 Ba8 23. Qf2 f6 24. Ne3 Rfc8 25. Ncd5 Bd8 26. Rc4 b5 27. Rxc8 Rxc8 28. a5 Kg7 29. Qd2 Bb7 30. Kg1 Nb8 31. Kf2 Qf7 32. h4 Nc6 33. Rh1 Nd4 34. Kg1 Bxd5 35. exd5 Qh5 36. Kf2 Kf7 37. Rh3 g4 38. Rh1 Nxf5 39. Rc1 Ra8 40. Qc2 Nd4 41. Qd1 f5 42. Kg1 f4 43. Nxg4 fxg3 44. Qf1+ Kg7 45. Rc7+ Bxc7 46. Qf6+ Kh7 47. Qe7+ Kh8 48. Qf6+ Kg8 0-1

[Event "San Francisco Golden Gate op"]
[Site "San Francisco"]
[Date "1976.??.??"]
[Round "5"]
[White "Gruchacz, Robert"]
[Black "Silman, Jeremy D"]
[Result "1/2-1/2"]
[ECO "B02"]
[BlackElo "2310"]
[PlyCount "38"]
[EventDate "1976.12.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 c5 5. f4 d5 6. g3 Nc6 7. Bg2 e6 8. Nf3 b6 9. 0-0 Ba6 10. Re1 Qd7 11. d3 0-0-0 12. Ng5 h6 13. Nh3 Bb7 14. Qh5 g6 15. Qf3 Na5 16. Qe2 Qa4 17. Nf2 h5 18. h3 Kb8 19. Bf3 Be7 1/2-1/2

[Event "San Francisco Golden Gate op"]
[Site "San Francisco"]
[Date "1976.??.??"]
[Round "2"]
[White "Gruchacz, Robert"]
[Black "Whitehead, Paul A"]
[Result "1-0"]
[ECO "B77"]
[PlyCount "79"]
[EventDate "1976.12.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. Bc4 Nd7 10. Bb5 Nxd4 11. Bxd4 Bxd4 12. Qxd4 Qb6 13. 0-0-0 Qxd4 14. Rxd4 Nf6 15. Re1 Be6 16. Nd5 Bxd5 17. exd5 a6 18. Ba4 b5 19. Bb3 Rfe8 20. a4 Nd7 21. c3 Nc5 22. Bc2 Kf8 23. Kd2 Reb8 24. a5 Nd7 25. f4 Ra7 26. Rb4 Rc7 27. Bd3 Rcb7 28. Kc2 Nf6 29. h3 Ke8 30. Kb3 Kd8 31. Rc1 Nd7 32. Ka3 Rc8 33. Rc2 Rbc7 34. Ka2 f5 35. g4 fxg4 36. hxg4 Nf6 37. g5 Ng4 38. Re4 h6 39. gxh6 Nxh6 40. Re6 1-0

[Event "San Francisco Golden Gate op"]
[Site "San Francisco"]
[Date "1976.??.??"]
[Round "1"]
[White "Milton, John"]
[Black "Gruchacz, Robert"]
[Result "1/2-1/2"]
[ECO "B85"]
[PlyCount "67"]
[EventDate "1976.12.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Be2 a6 7. 0-0 Be7 8. f4 Nc6 9. Be3 0-0 10. Qe1 Bd7 11. Qg3 b5 12. a3 Nxd4 13. Bxd4 Bc6 14. Rae1 Qd7 15. Bd3 a5 16. Kh1 b4 17. axb4 axb4 18. Nd1 Qb7 19. Nf2 Rfd8 20. Bxf6 Bxf6 21. e5 Be7 22. Ng4 Kf8 23. f5 exf5 24. Rxf5 dxe5 25. Nxe5 Bd5 26. Nxf7 Bxf7 27. Rxf7+ Kxf7 28. Bc4+ Kf8 29. Qf2+ Bf6 30. Qc5+ Qe7 31. Rxe7 Bxe7 32. Qf5+ Bf6 33. h3 Rd6 34. Bd3 1/2-1/2

[Event "San Francisco Golden Gate op"]
[Site "San Francisco"]
[Date "1976.??.??"]
[Round "3"]
[White "Winslow, Elliott C"]
[Black "Gruchacz, Robert"]
[Result "0-1"]
[ECO "B82"]
[PlyCount "82"]
[EventDate "1976.12.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. f4 Be7 7. Bd3 Nbd7 8. Qf3 a6 9. a4 Qc7 10. 0-0 b6 11. Kh1 Nc5 12. Bd2 0-0 13. Rae1 Bb7 14. Qh3 Qd7 15. Nf3 Nxd3 16. cxd3 Rfc8 17. e5 Ne8 18. f5 exf5 19. Nd4 g6 20. e6 fxe6 21. Nxe6 Bf6 22. d4 d5 23. Bg5 Rc6 24. Bxf6 Nxf6 25. Nf4 Re8 26. Qh4 Rd6 27. Re5 Ne4 28. h3 g5 29. Nxe4 gxh4 30. Nxd6 Rxe5 31. dxe5 d4 32. Nh5 Qc6 33. Rf2 d3 34. Nxf5 Qe6 35. Nf6+ Kh8 36. Nd6 Bd5 37. Nfe8 Qxh3+ 38. Kg1 Qe3 39. Nf5 Qe1+ 40. Rf1 d2 41. Nf6 Qxf1+ 0-1

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "8"]
[White "Diesen, Mark C"]
[Black "Gruchacz, Robert"]
[Result "0-1"]
[ECO "B98"]
[PlyCount "64"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 h6 9. Bh4 Nbd7 10. 0-0-0 Qc7 11. h3 b5 12. Bd3 Bb7 13. a3 b4 14. axb4 Qb6 15. Bf2 Qxb4 16. g4 g5 17. h4 gxf4 18. g5 Ne5 19. Qxf4 Nfd7 20. Be2 hxg5 21. hxg5 Rxh1 22. Rxh1 Ng6 23. Qd2 Nde5 24. b3 Qa3+ 25. Kb1 Rc8 26. Nf3 Qb4 27. Kb2 Nxf3 28. Bxf3 Bxg5 29. Be3 Bf6 30. Qe2 Qxc3+ 31. Kc1 Qa1+ 32. Kd2 Bc3+ 0-1

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "3"]
[White "Gruchacz, Robert"]
[Black "Binet Tapaszto, Laszlo"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "132"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nc3 e5 6. d5 Bb4 7. Nge2 0-0 8. a3 Be7 9. Ng3 c6 10. Be2 f5 11. 0-0 Bc5 12. Qb3 Kh8 13. Bd2 Bd4 14. Rad1 N8d7 15. Qc2 Qf6 16. Bf3 Nxc4 17. dxc6 bxc6 18. Nb5 Ba6 19. Nxd4 exd4 20. Bb4 c5 21. Bxa8 cxb4 22. Bd5 d3 23. Rxd3 Nxb2 24. Rb3 Bxf1 25. Nxf1 bxa3 26. Rxa3 Qd4 27. Qd2 Qxd2 28. Nxd2 Nb6 29. Bf3 Rd8 30. Nf1 Rd7 31. g3 N2c4 32. Ra6 g6 33. Ne3 Nxe3 34. fxe3 Re7 35. Kf2 Nc4 36. h3 Nxe3 37. Rc6 g5 38. h4 g4 39. Be2 Kg7 40. Rc3 Nd5 41. Rc5 Ne3 42. Rc3 Nd5 43. Rc5 Rd7 44. Bb5 Rd6 45. Bc4 Nb6 46. Rc7+ Kf6 47. Ba6 Rd2+ 48. Kf1 Rd7 49. Rc6+ Ke5 50. Kf2 Rd2+ 51. Kf1 Rd6 52. Rc5+ Rd5 53. Rc7 Rd7 54. Rc5+ Ke4 55. Bb5 Rd5 56. Bc6 Kd4 57. Bxd5 Kxc5 58. Be6 Nd5 59. Kf2 Ne7 60. Ke3 Kd6 61. Bc4 Ke5 62. Bb3 Nd5+ 63. Kf2 Nf6 64. Kg2 Ne4 65. Bg8 h6 66. Bb3 a5 0-1

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "11"]
[White "Gruchacz, Robert"]
[Black "Gonzales, James A"]
[Result "1-0"]
[ECO "B72"]
[PlyCount "65"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Bd7 7. h3 g6 8. Be3 Bg7 9. 0-0 0-0 10. Bb3 Na5 11. f4 Nxb3 12. axb3 a6 13. Qf3 Bc6 14. Nd5 Rc8 15. Rf2 e6 16. Nc3 Qe7 17. Kh1 d5 18. e5 Nd7 19. Qg4 f5 20. exf6 Nxf6 21. Qh4 Qd6 22. Re1 Rce8 23. Rfe2 Nh5 24. Rf2 e5 25. fxe5 Bxe5 26. Nce2 Bf6 27. Bg5 Re4 28. Bxf6 Rxh4 29. Bxh4 Rxf2 30. Bxf2 Qf6 31. Kg1 Nf4 32. Nxf4 Qxf4 33. Be3 1-0

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "10"]
[White "Gruchacz, Robert"]
[Black "Powell, Charles"]
[Result "0-1"]
[ECO "C12"]
[PlyCount "67"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[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. h4 c5 10. Bd3 Nxd2 11. Kxd2 Qe7 12. Rb1 Nc6 13. Rh3 cxd4 14. cxd4 Na5 15. Rf3 Bd7 16. Qf4 0-0-0 17. Qxf7 Qxh4 18. Qf4 Qe7 19. Ke2 g5 20. Qd2 Nc6 21. c3 g4 22. Rf6 Rdf8 23. Rxh6 Rxh6 24. Qxh6 Qf7 25. Qe3 Ne7 26. Ke1 Nf5 27. Qe2 g3 28. f3 Rh8 29. Nh3 Nh4 30. Ng1 Qf4 31. Qd2 Nxg2+ 32. Qxg2 Rh2 33. Ne2 Qe3 34. Qg1 0-1

[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "12"]
[White "Martz, William E"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "A67"]
[PlyCount "81"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 Nf6 3. d4 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. Bd3 0-0 10. Nf3 Na6 11. 0-0 Rb8 12. Kh1 Nc7 13. a4 a6 14. a5 b5 15. axb6 Nxb6 16. f5 c4 17. Bc2 Nb5 18. Bg5 Qc7 19. f6 Bh8 20. Nxb5 axb5 21. Nd4 Bd7 22. b4 Ra8 23. Qf3 Rxa1 24. Rxa1 Ra8 25. Rxa8+ Nxa8 26. Bd2 Qa7 27. Bc3 Nc7 28. g4 Ne8 29. g5 Qa3 30. Qe3 h6 31. h4 h5 32. e5 dxe5 33. Nc6 Nd6 34. Nxe5 Be8 35. Kg2 Qa2 36. Qd2 Qa7 37. Nc6 Qa2 38. Kf2 Bd7 39. Ke1 Qa6 40. Qf4 Qa2 41. Kd2 1-0

[Event "US Open-72"]
[Site "Ventura"]
[Date "1971.??.??"]
[Round "5"]
[White "Gruchacz, Robert"]
[Black "Bersbach, Emil"]
[Result "0-1"]
[ECO "C21"]
[PlyCount "48"]
[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. e4 e5 2. d4 d5 3. Nc3 f5 4. exf5 Bxf5 5. Bd3 Nf6 6. Nf3 Bd6 7. 0-0 0-0 8. Re1 c6 9. Nxe5 Ne4 10. Ne2 Nd7 11. Nxd7 Bxd7 12. g3 Qf6 13. f4 h5 14. Be3 h4 15. Kg2 Kf7 16. Rh1 Rae8 17. Bf2 h3+ 18. Kg1 g5 19. Bxe4 Rxe4 20. Nc3 gxf4 21. Nxe4 dxe4 22. Qh5+ Ke7 23. g4 Rh8 24. Bh4 Qxh4 0-1

[Event "US Open-72"]
[Site "Ventura"]
[Date "1971.??.??"]
[Round "6"]
[White "Jacobs, Daniel R"]
[Black "Gruchacz, Robert"]
[Result "1-0"]
[ECO "B51"]
[PlyCount "43"]
[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. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Bxd7+ Bxd7 7. 0-0 Nf6 8. Bg5 e6 9. Rd1 Be7 10. e5 dxe5 11. Nxe5 Bb5 12. c4 Qxd4 13. Rxd4 Bd7 14. Nc3 Rd8 15. Rad1 Bc8 16. Rxd8+ Bxd8 17. Rxd8+ Kxd8 18. Nxf7+ Ke8 19. Nxh8 Kf8 20. Bxf6 gxf6 21. Ne4 Kg7 22. Nd6 1-0

