[Event "Detroit op1"]
[Site "Detroit"]
[Date "2003.05.18"]
[Round "4"]
[White "Choyke, Jack"]
[Black "Vandivier, Don"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "1619"]
[BlackElo "1892"]
[PlyCount "102"]
[EventDate "2003.05.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 5. Nf3 c5 6. e5 Qf4 7. Be2 cxd4 8. Qxd4 Qxd4 9. Nxd4 a6 10. Nd2 d5 11. 0-0 Nc6 12. Nxc6 bxc6 13. c4 g5 14. cxd5 exd5 15. Rac1 Bd7 16. Bd3 Bg7 17. Rfe1 0-0 18. Nf3 Rfe8 19. Nd4 Bxe5 20. Nf5 Bxf5 21. Bxf5 Bxb2 22. Bd7 Bxc1 23. Rxe8+ Rxe8 24. Bxe8 c5 25. Bc6 d4 26. Bb7 a5 27. Ba6 Kf8 28. Kf1 Ke7 29. f3 Kd6 30. Bc4 f5 31. a4 Ke5 32. Ke2 Bf4 33. h3 Bg3 34. Kd3 Kf4 35. Be6 Bf2 36. Bd7 h5 37. g4 fxg4 38. fxg4 h4 39. Kc4 Kg3 40. Bf5 Kxh3 41. Kxc5 d3+ 42. Kc4 d2 43. Bc2 Kxg4 44. Kd3 Be1 45. Ke2 Kf4 46. Kf1 g4 47. Kg2 h3+ 48. Kh1 g3 49. Kg1 Bf2+ 50. Kf1 Be3 51. Bd1 g2+ 0-1

[Event "Detroit op1"]
[Site "Detroit"]
[Date "2003.05.17"]
[Round "3"]
[White "Choyke, Jack"]
[Black "Ho, Randy"]
[Result "0-1"]
[ECO "B60"]
[WhiteElo "1619"]
[BlackElo "1888"]
[PlyCount "102"]
[EventDate "2003.05.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Bxf6 gxf6 8. Bc4 Qb6 9. Nb3 Ne5 10. Be2 f5 11. Nd5 Qd8 12. exf5 Bxf5 13. Bb5+ Bd7 14. Qe2 Bxb5 15. Qxb5+ Qd7 16. Nc7+ Kd8 17. Qxd7+ Kxd7 18. Nxa8 Bh6 19. 0-0 Rxa8 20. c3 Rg8 21. Nd4 Nc4 22. b3 Ne5 23. Rad1 e6 24. Nb5 d5 25. Nxa7 Ra8 26. Nb5 Rxa2 27. c4 Kc6 28. Ra1 Rb2 29. Na7+ Kc5 30. cxd5 exd5 31. Rab1 Rc2 32. b4+ Kb6 33. Ra1 Nd3 34. b5 Nxf2 35. Ra3 Bf8 36. Raa1 Bc5 37. Nc8+ Kc7 38. Ra8 d4 39. Na7 Ng4 40. Rxf7+ Kb6 41. Nc8+ Kxb5 42. Kf1 d3 43. Rxb7+ Kc6 44. Rb1 Ne3+ 45. Kg1 d2 46. Ne7+ Kd6 47. Nc8+ Ke5 48. Raa1 d1Q+ 49. Rxd1 Nxd1+ 50. Kf1 Ne3+ 51. Ke1 Bb4# 0-1

[Event "Detroit op1"]
[Site "Detroit"]
[Date "2003.05.17"]
[Round "2"]
[White "La Forge, Thomas"]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1907"]
[BlackElo "1619"]
[PlyCount "92"]
[EventDate "2003.05.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. c3 Bg7 4. Be3 Nf6 5. Bd3 0-0 6. h3 Nc6 7. Nd2 e5 8. d5 Ne7 9. Ne2 c6 10. c4 c5 11. g4 Ne8 12. Ng3 f5 13. gxf5 gxf5 14. exf5 Nxf5 15. Nxf5 Bxf5 16. Bxf5 Rxf5 17. Qg4 Qd7 18. Ne4 Rf7 19. Ke2 Rd8 20. Rhg1 Qxg4+ 21. Rxg4 Kh8 22. Ng5 Rf6 23. Ne6 Rd7 24. Rag1 Rff7 25. a3 Nf6 26. Rxg7 Rxg7 27. Nxg7 Rxg7 28. Rxg7 Kxg7 29. b4 b6 30. bxc5 bxc5 31. f4 Nd7 32. Kd3 Kf6 33. Ke4 a6 34. Bd2 exf4 35. Bxf4 Ke7 36. Kd3 Nb6 37. Bg5+ Kf7 38. Bd8 Nd7 39. Bh4 Ne5+ 40. Kc3 Nf3 41. Bg3 Ng5 42. Kd3 Ke7 43. h4 Nf7 44. Bf4 Kf6 45. Ke4 h5 46. Bg3 Kg6 1/2-1/2

[Event "Detroit-ch MI opB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "3"]
[White "Al Shareef, Robert"]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "A04"]
[PlyCount "89"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 e6 2. b3 b6 3. Bb2 Bb7 4. e3 d6 5. d4 Nf6 6. Nbd2 g6 7. c4 Nbd7 8. Qc2 Bg7 9. Be2 0-0 10. 0-0 Qe7 11. e4 e5 12. Bd3 a5 13. Rfe1 Ng4 14. h3 Nh6 15. dxe5 dxe5 16. Nf1 Rfd8 17. Ne3 c6 18. Rad1 f6 19. Qc1 Bf8 20. Nh2 Qe6 21. c5 b5 22. Neg4 Nf7 23. Be2 Nxc5 24. Ba3 Nd7 25. Bxf8 Nxf8 26. Nh6+ Kg7 27. Nxf7 Qxf7 28. Ng4 Ne6 29. h4 Nf4 30. g3 Nxe2+ 31. Rxe2 Rxd1+ 32. Qxd1 h5 33. Rd2 Re8 34. Ne3 Re7 35. g4 Bc8 36. gxh5 gxh5 37. f3 Be6 38. Rg2+ Kh7 39. Qd6 Rc7 40. f4 exf4 41. Qxf4 a4 42. bxa4 bxa4 43. Nf5 Bxf5 44. Qxf5+ Kh6 45. Qf4+ 1/2-1/2

[Event "Detroit-ch MI opB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "1"]
[White "Aldrich, Justin M"]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "114"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nf6 2. d3 c5 3. Nc3 d6 4. Be2 e6 5. Nf3 Nc6 6. Bf4 a6 7. 0-0 g6 8. e5 dxe5 9. Nxe5 Qd4 10. Nxc6 Qxf4 11. Bf3 Qc7 12. Nd5 Nxd5 13. Bxd5 exd5 14. Re1+ Be6 15. Ne5 Bg7 16. d4 Bxe5 17. Rxe5 cxd4 18. Qxd4 0-0 19. Rae1 Qc4 20. Qe3 Rfe8 21. Qh6 Bd7 22. h3 Rxe5 23. Rxe5 Re8 24. Rh5 gxh5 25. Qg5+ Kf8 26. Qh6+ Ke7 27. Qg5+ Kd6 28. b3 Qe4 29. Qf6+ Qe6 30. Qf4+ Kc6 31. Qa4+ Kc7 32. Qa5+ Kc8 33. Qc3+ Bc6 34. a4 Qe1+ 35. Qxe1 Rxe1+ 36. Kh2 Re2 37. f3 Rxc2 38. b4 Bxa4 39. Kg1 Rc4 40. Kf2 h4 41. g4 hxg3+ 42. Kxg3 h5 43. h4 Rxb4 44. f4 Re4 45. Kf3 Bd1+ 46. Kg3 f5 47. Kf2 Rxf4+ 48. Ke3 Rxh4 49. Kd2 Bb3 50. Kc3 Ba4 51. Kd3 Re4 52. Kd2 h4 53. Kc3 h3 54. Kd3 h2 55. Kc3 h1Q 56. Kd2 Qd1+ 57. Kc3 Qc2# 0-1

[Event "USA-ch amat North"]
[Site "Eastpointe"]
[Date "1994.??.??"]
[Round "1"]
[White "Calvo, E."]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "124"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 f5 3. e5 d5 4. d4 e6 5. c3 h6 6. h4 g6 7. Nh2 Qxh4 8. Nd2 Bd7 9. Be2 0-0-0 10. Ndf3 Qe7 11. g3 Qg7 12. Rg1 g5 13. g4 f4 14. Qd3 Nge7 15. b4 Ng6 16. a4 Kb8 17. a5 a6 18. Qb1 Na7 19. c4 dxc4 20. Bxc4 Nb5 21. Bxb5 Bxb5 22. Bd2 Ne7 23. Bc3 Nd5 24. Qb3 Nxc3 25. Qxc3 Qd7 26. Rc1 Qc6 27. Qxc6 Bxc6 28. Rb1 Rd5 29. Ke2 Rb5 30. Rgc1 Rxb4 31. Kf1 Rxb1 32. Rxb1 Be7 33. Nd2 Rd8 34. Nb3 Ba4 35. Nf3 Rd5 36. Nfd2 c5 37. dxc5 Bxb3 38. Nxb3 Bxc5 39. Kg2 Bb4 40. Ra1 Bc3 41. Ra3 Bxe5 42. Ra4 Bc7 43. Nd4 Rxa5 44. Rxa5 Bxa5 45. Nxe6 Bc3 46. Kf3 b5 47. Ke2 Kb7 48. Nc5+ Kb6 49. Ne4 Bg7 50. Kd3 a5 51. Kc2 Kc6 52. f3 Kd5 53. Kb3 Bd4 54. Nd2 Bc5 55. Ne4 a4+ 56. Kc3 b4+ 57. Kd3 Be7 58. Nd2 b3 59. Nb1 a3 60. Nxa3 Bxa3 61. Kc3 b2 62. Kc2 Kd4 0-1

[Event "USA-ch amat North"]
[Site "Eastpointe"]
[Date "1994.??.??"]
[Round "2"]
[White "Choyke, Jack"]
[Black "Aldrich, Jeff"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "110"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 Nd7 3. e3 c6 4. Bd3 Ngf6 5. Nf3 e6 6. c3 Be7 7. Nbd2 h6 8. Bh4 0-0 9. Qc2 c5 10. 0-0-0 c4 11. Be2 b5 12. h3 a5 13. g4 Nh7 14. Bg3 b4 15. Ne5 a4 16. Nc6 b3 17. Qb1 bxa2 18. Qxa2 Qe8 19. Nxe7+ Qxe7 20. Kc2 a3 21. Ra1 e5 22. bxa3 exd4 23. cxd4 Nb6 24. Qb2 Na4 25. Qb4 Qf6 26. Qd6 Be6 27. Rhb1 Qg6+ 28. Kc1 Nc3 29. Bd1 Nxb1 30. Rxb1 Qd3 31. Qb4 c3 32. Nf3 Rfc8 33. Qb3 Bd7 34. Qc2 Qa6 35. Be2 Qxa3+ 36. Kd1 Ba4 37. Ne1 Bxc2+ 38. Nxc2 Qa2 39. Rc1 Qb2 40. h4 Nf6 41. f3 Ra2 42. Be1 Rca8 43. Bd3 Nd7 44. g5 Nb6 45. gxh6 gxh6 46. Bg3 Nc4 47. Bf4 Qb3 48. Ke2 Nb2 49. Rg1+ Kf8 50. Bxh6+ Ke7 51. Bg5+ Kd6 52. Bf4+ Kc6 53. Bf5 Qc4+ 54. Kf2 Nd3+ 55. Kg3 Rxc2 0-1

[Event "Detroit-ch MI clsB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "4"]
[White "Choyke, Jack"]
[Black "Griffin, J."]
[Result "1-0"]
[ECO "C03"]
[PlyCount "115"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. Nd2 b6 4. Ngf3 dxe4 5. Nxe4 Bb7 6. Ned2 Nf6 7. c3 Be7 8. Bc4 0-0 9. 0-0 c5 10. Nb3 cxd4 11. Nbxd4 Nc6 12. Qe2 Nxd4 13. Nxd4 a6 14. Bxe6 Re8 15. Bb3 Qc7 16. Qc4 Qxc4 17. Bxc4 b5 18. Bb3 Bc5 19. Be3 Rad8 20. Nf5 Bxe3 21. Nxe3 Rd2 22. Nd1 Nd5 23. c4 Nf4 24. Nc3 Nxg2 25. cxb5 Nf4 26. h4 axb5 27. Rae1 Rxe1 28. Rxe1 Kf8 29. Nxb5 Rd3 30. Nc7 Rd8 31. Ba4 g6 32. Re8+ Rxe8 33. Bxe8 Nd3 34. Ba4 Nxb2 35. Bb3 Bc6 36. Bd5 Bd7 37. Na6 Ke7 38. Nc5 Bf5 39. Be4 Bxe4 40. Nxe4 Na4 41. f4 f5 42. Ng5 h6 43. Nf3 Nc3 44. Nd4 Nxa2 45. h5 Kf6 46. hxg6 Kxg6 47. Kf2 Nb4 48. Kf3 Nd5 49. Nc6 Ne7 50. Nxe7+ Kf6 51. Nd5+ Ke6 52. Ne3 Kf6 53. Kg3 Kg6 54. Kh3 Kf6 55. Kh4 Kg6 56. Nd5 h5 57. Ne3 Kf6 58. Kxh5 1-0

[Event "USA-ch amat North"]
[Site "Eastpointe"]
[Date "1994.??.??"]
[Round "3"]
[White "Choyke, Jack"]
[Black "Hartwig, W."]
[Result "1-0"]
[ECO "B06"]
[PlyCount "43"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nc3 Nc6 4. Be3 Nh6 5. f3 0-0 6. Qd2 f5 7. Bxh6 e5 8. Bxg7 Kxg7 9. d5 Ne7 10. 0-0-0 fxe4 11. fxe4 c6 12. Nf3 cxd5 13. Nxd5 d6 14. Nxe7 Qxe7 15. Qxd6 Qf7 16. Qxe5+ Kg8 17. b3 Re8 18. Qd4 Qf4+ 19. Kb1 Bg4 20. Bc4+ Kf8 21. Qh8+ Ke7 22. Qg7+ 1-0

[Event "Trenton quads"]
[Site "Trenton"]
[Date "1994.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Iyer, Krishnan"]
[Result "1-0"]
[ECO "A02"]
[PlyCount "48"]
[EventDate "1994.10.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. b3 b6 2. e3 Bb7 3. f4 e6 4. Nf3 Nf6 5. g3 d5 6. Bb2 Nbd7 7. Bg2 Bd6 8. 0-0 Qe7 9. Nc3 0-0-0 10. Nb5 a6 11. Nxd6+ cxd6 12. Re1 e5 13. Bf1 Rhg8 14. a4 Ne8 15. a5 b5 16. Bh3 f6 17. d4 e4 18. Nd2 Qf7 19. Rc1 Kb8 20. c4 dxc4 21. bxc4 Nc7 22. Qb3 Rc8 23. cxb5 Qxb3 24. Nxb3 Nxb5 1-0

[Event "Detroit-ch MI clsB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "2"]
[White "Choyke, Jack"]
[Black "Johnston, Robert"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "66"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 Nc6 5. Bg2 e6 6. d3 Be7 7. 0-0 a6 8. a4 0-0 9. b3 Qc7 10. Bb2 Bd7 11. Nf4 Rac8 12. Rc1 Nd4 13. Nfe2 Qb6 14. Nxd4 cxd4 15. Nb1 Bxa4 16. Ba3 Bd7 17. Nd2 Qa5 18. Nc4 Rxc4 19. dxc4 Qxa3 20. Qxd4 Qa5 21. Ra1 Qh5 22. h4 Ng4 23. Qb6 Bxh4 24. gxh4 Qxh4 25. Qxd6 e5 26. Rfe1 Qxf2+ 27. Kh1 Qf4 28. Kg1 f5 29. Qxf8+ Kxf8 30. exf5 Bc6 31. Re2 Qh2+ 32. Kf1 Bxg2+ 33. Rxg2 Ne3+ 0-1

[Event "USA-ch amat North"]
[Site "Eastpointe"]
[Date "1994.??.??"]
[Round "5"]
[White "Choyke, Jack"]
[Black "Mahabir, Jagdesh"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "55"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. Qd2 0-0 6. f3 Nfd7 7. 0-0-0 f6 8. Bc4+ Kh8 9. Bh6 Nb6 10. Bb3 e6 11. h4 Qe7 12. Bxg7+ Kxg7 13. f4 c5 14. a4 cxd4 15. Qxd4 Nc6 16. Qxd6 Qxd6 17. Rxd6 Re8 18. Nf3 h5 19. e5 f5 20. Ng5 Nd8 21. Rhd1 Bd7 22. a5 Nd5 23. Rxd7+ Kh8 24. Bxd5 exd5 25. Nxd5 Ne6 26. Nxe6 Rxe6 27. Nf6 b5 28. Rh7# 1-0

[Event "Trenton quads"]
[Site "Trenton"]
[Date "1994.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "McGinniss, M."]
[Result "1-0"]
[ECO "A01"]
[PlyCount "58"]
[EventDate "1994.10.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Bc5 4. c4 Qe7 5. Nc3 Nf6 6. d3 0-0 7. Nf3 a6 8. Be2 Ba3 9. Bxa3 Qxa3 10. 0-0 Rb8 11. Qc1 Qxc1 12. Raxc1 d6 13. Rfd1 Bg4 14. h3 Bh5 15. Nd2 Bxe2 16. Nxe2 Nb4 17. d4 Nxa2 18. Ra1 Nb4 19. d5 Nd7 20. h4 Nd3 21. Rdb1 N7c5 22. Ra3 Nb4 23. Nc3 Ncd3 24. e4 f5 25. f3 fxe4 26. Ndxe4 Nc2 27. Ra4 Rbe8 28. g4 Ne3 29. c5 b5 1-0

[Event "Detroit-ch MI clsB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "5"]
[White "Choyke, Jack"]
[Black "Moore, Randall"]
[Result "1/2-1/2"]
[ECO "B06"]
[PlyCount "49"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. f4 Nd7 5. Nf3 c5 6. Be3 cxd4 7. Bxd4 e5 8. fxe5 Nxe5 9. Bxe5 Bxe5 10. Nxe5 dxe5 11. Qxd8+ Kxd8 12. 0-0-0+ Kc7 13. Bc4 Be6 14. Bxe6 fxe6 15. Rhf1 Nh6 16. h3 Rhf8 17. b3 a6 18. g4 Ng8 19. Kd2 Ne7 20. Ne2 Nc6 21. c3 b5 22. Ng3 Rf4 23. Ne2 Rff8 24. Rxf8 Rxf8 25. Ke3 1/2-1/2

[Event "Detroit-ch MI opB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "4"]
[White "Choyke, Jack"]
[Black "Quander, K."]
[Result "0-1"]
[ECO "A22"]
[PlyCount "56"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. g3 Be7 5. Bg2 c6 6. 0-0 e4 7. Nd4 d5 8. d3 exd3 9. Qxd3 dxc4 10. Qxc4 0-0 11. Rd1 Qb6 12. a3 Nbd7 13. Bf4 Qc5 14. Qxc5 Bxc5 15. Nxc6 g5 16. Bxg5 bxc6 17. Bxc6 Rb8 18. b4 Bb6 19. Bf4 Ng4 20. Bxb8 Nxb8 21. Bf3 Nxf2 22. Kg2 Bh3+ 23. Kg1 Nxd1+ 24. Kh1 Nxc3 25. Rc1 Na4 26. e4 Rd8 27. Bd1 Nb2 28. Bb3 Nd3 0-1

[Event "Detroit-ch MI opB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "6"]
[White "Choyke, Jack"]
[Black "Salami, Samer"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "80"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. b3 d5 2. e3 e5 3. Bb2 Nc6 4. Bb5 Bd6 5. Ne2 Bd7 6. 0-0 a6 7. Bxc6 Bxc6 8. f4 f6 9. Ng3 Qd7 10. fxe5 fxe5 11. Bxe5 0-0-0 12. Bxd6 Qxd6 13. Qg4+ Rd7 14. Qf4 Nf6 15. Qxd6 Rxd6 16. Nf5 Rd7 17. Nd4 Ne4 18. Nxc6 bxc6 19. d3 Nf6 20. Nc3 Ng4 21. Rae1 Re8 22. e4 dxe4 23. Nxe4 Rde7 24. h3 Nf6 25. Nxf6 Rxe1 26. Nxe8 Rxe8 27. Kf2 Rf8+ 28. Ke2 Rxf1 29. Kxf1 Kd7 30. Ke2 Ke6 31. Ke3 Ke5 32. d4+ Kf5 33. b4 h5 34. g3 g6 35. c4 g5 36. a4 Kf6 37. Ke4 Ke6 38. a5 Kf6 39. b5 cxb5 40. cxb5 axb5 1-0

[Event "Detroit-ch MI opB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "2"]
[White "Choyke, Jack"]
[Black "Teper, G."]
[Result "1/2-1/2"]
[ECO "A18"]
[PlyCount "43"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. cxd5 exd5 5. e5 Nfd7 6. d4 Bb4 7. f4 0-0 8. Nf3 c5 9. a3 Ba5 10. Be3 Bxc3+ 11. bxc3 Qa5 12. Qd2 Nc6 13. Bd3 cxd4 14. cxd4 Qxd2+ 15. Bxd2 Nb6 16. 0-0 h6 17. Rac1 Bg4 18. Be3 Na5 19. Nd2 Rac8 20. h3 Bd7 21. Kf2 Nac4 22. Ke2 1/2-1/2

[Event "Detroit-ch MI clsB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "3"]
[White "McCarter, Robert"]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "A41"]
[PlyCount "79"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nc6 2. Nf3 d6 3. Bf4 Bg4 4. e3 e6 5. h3 Bh5 6. Be2 Nf6 7. Nbd2 Be7 8. 0-0 0-0 9. c4 d5 10. a3 Bd6 11. Bxd6 Qxd6 12. c5 Qd8 13. b4 Ne7 14. Ne5 Bxe2 15. Qxe2 c6 16. Rab1 Nd7 17. Nxd7 Qxd7 18. b5 Rfb8 19. Nf3 f6 20. Rb3 Qc8 21. Rfb1 g6 22. Qb2 h5 23. bxc6 Nxc6 24. Rxb7 Rxb7 25. Qxb7 Rb8 26. Qxc8+ Rxc8 27. Rb5 Rb8 28. Rxb8+ Nxb8 29. Nd2 Nc6 30. Nb3 Kf7 31. Kf1 a5 32. a4 g5 33. f3 h4 34. Ke2 f5 35. Kd2 f4 36. exf4 gxf4 37. Kc3 Kf6 38. Nc1 Kg5 39. Nd3 Kf5 40. Nc1 1/2-1/2

[Event "Detroit-ch MI clsB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "1"]
[White "Nicolli, Randy"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "A03"]
[PlyCount "89"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. f4 d5 2. e3 Nf6 3. b3 d4 4. Bb2 dxe3 5. Qe2 e6 6. dxe3 Bb4+ 7. c3 Bd6 8. Nd2 Qe7 9. 0-0-0 Ba3 10. Ngf3 Bxb2+ 11. Kxb2 0-0 12. Ne5 Rd8 13. g4 c6 14. Bg2 a5 15. Ndc4 Nd5 16. e4 Nxf4 17. Rxd8+ Qxd8 18. Rd1 Qe7 19. Qd2 g5 20. Nb6 Nd7 21. Nexd7 Bxd7 22. Nxa8 Nxg2 23. Qxd7 Qc5 24. Qd8+ Kg7 25. Qd4+ Qxd4 26. Rxd4 Nh4 27. Nb6 Nf3 28. Rd7 Nxh2 29. Rxb7 h5 30. gxh5 g4 31. Nc4 g3 32. Ne3 Nf1 33. Ng2 Nd2 34. h6+ Kxh6 35. Rxf7 Nxe4 36. Ra7 Kg5 37. Rxa5+ Kg4 38. Ne1 Kf4 39. a4 e5 40. Ra8 Ke3 41. Rf8 Nf2 42. Ng2+ Ke2 43. a5 Kf1 44. Nh4 Ke2 45. a6 1-0

[Event "Detroit-ch MI opB"]
[Site "Detroit"]
[Date "1994.??.??"]
[Round "7"]
[White "Nikitin, Mikhail"]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "B04"]
[PlyCount "36"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 cxd6 5. c4 Nb6 6. Nf3 g6 7. Nc3 Bg7 8. Be3 0-0 9. Qd2 Nc6 10. 0-0-0 Bg4 11. h3 Bxf3 12. gxf3 d5 13. b3 e6 14. Bd3 Nxd4 15. Bxd4 Bxd4 16. h4 Qf6 17. Nb5 Be5 18. Qe2 dxc4 0-1

[Event "USA-ch amat North"]
[Site "Eastpointe"]
[Date "1994.??.??"]
[Round "6"]
[White "Walker, D."]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "93"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d5 3. e5 h5 4. Nf3 Bg4 5. c3 f6 6. exf6 Nxf6 7. Bd3 Ne4 8. Qe2 Bf5 9. Nbd2 Nxd2 10. Bxf5 Nxf3+ 11. Qxf3 Qd6 12. Bf4 Qf6 13. Qxd5 Rd8 14. Qe4 Nxd4 15. Bg6+ Kd7 16. cxd4 Kc8 17. Rc1 Rd6 18. Bxd6 Qxd6 19. 0-0 Rh6 20. Bf5+ Kb8 21. Bh3 e6 22. Rfe1 g5 23. Bxe6 a6 24. d5 Bg7 25. Qc2 Bd4 26. Qd2 Qb6 27. Rcd1 Bc5 28. a3 Rf6 29. Rf1 h4 30. b4 Bd6 31. Qd4 Bxh2+ 32. Kxh2 Qd6+ 33. Kg1 Rf4 34. Qg7 h3 35. Bxh3 Rh4 36. Qxg5 Rh6 37. Rc1 Rg6 38. Qf5 Rh6 39. Qc8+ Ka7 40. Rxc7 Qb6 41. Rfc1 Rxh3 42. Rxb7+ Qxb7 43. Rc7 Qxc7 44. Qxc7+ Ka8 45. gxh3 a5 46. d6 axb4 47. d7 1-0

[Event "USA-ch amat North"]
[Site "Eastpointe"]
[Date "1994.??.??"]
[Round "4"]
[White "Walker, Leigh"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2165"]
[PlyCount "41"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d5 3. e5 e6 4. Nf3 Bd7 5. a3 a5 6. Bd3 f6 7. Qe2 Qe7 8. 0-0 Qf7 9. Nc3 0-0-0 10. Be3 Be7 11. Rfb1 h6 12. b4 b6 13. Na4 axb4 14. axb4 Bxb4 15. Bg6 Qxg6 16. Qa6+ Kb8 17. Nc5 Na5 18. Rxa5 Bc6 19. Qa7+ Kc8 20. Qa8+ Bxa8 21. Rxa8# 1-0

[Event "Lansing-ch MI op-B"]
[Site "Lansing "]
[Date "1993.??.??"]
[Round "6"]
[White "Choyke, Jack"]
[Black "Carr, Jay A"]
[Result "1/2-1/2"]
[ECO "B02"]
[PlyCount "38"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 d5 3. exd5 Nxd5 4. Bc4 e6 5. Nf3 Be7 6. Bb5+ Bd7 7. Nxd5 Bxb5 8. Nxe7 Qxe7 9. d3 h6 10. 0-0 0-0 11. Nd4 Bc6 12. Nxc6 Nxc6 13. b3 Qf6 14. Rb1 Rfd8 15. Bb2 Qg6 16. a3 Rd5 17. f4 Rad8 18. Rf3 Qf5 19. g3 R8d7 1/2-1/2

[Event "Lansing-ch MI op-B"]
[Site "Lansing "]
[Date "1993.??.??"]
[Round "3"]
[White "Choyke, Jack"]
[Black "Morabito, Matthew"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "78"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 d6 3. d4 g6 4. Be2 Bg7 5. h4 0-0 6. h5 e5 7. d5 Nbd7 8. Be3 Nc5 9. Bxc5 dxc5 10. h6 Bh8 11. Qd2 a6 12. f3 Ne8 13. 0-0-0 Bf6 14. Kb1 Bg5 15. Qe1 Nd6 16. Qf2 b6 17. g4 Bd7 18. Rf1 Qe7 19. Qh2 b5 20. Nh3 b4 21. Nd1 Bb5 22. Bxb5 axb5 23. Nxg5 Qxg5 24. Qf2 c4 25. Qc5 b3 26. cxb3 cxb3 27. axb3 Ra6 28. Qe3 Qe7 29. g5 Rfa8 30. Nf2 c5 31. Ng4 c4 32. b4 c3 33. Nf6+ Kh8 34. Qxc3 Rc8 35. Qe3 Nc4 36. Qf2 Qxb4 37. Rd1 Na3+ 38. Ka1 Nc2+ 39. Kb1 Ra1# 0-1

[Event "Lansing-ch MI op-B"]
[Site "Lansing "]
[Date "1993.??.??"]
[Round "5"]
[White "Choyke, Jack"]
[Black "Spencer, Gary"]
[Result "1-0"]
[ECO "C30"]
[PlyCount "69"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 e5 3. f4 d6 4. Nf3 Nbd7 5. Bc4 h6 6. d3 Nb6 7. Bb3 Qe7 8. h3 Be6 9. Bxe6 Qxe6 10. f5 Qd7 11. a4 a6 12. a5 Nc8 13. Qe2 Ne7 14. 0-0 g5 15. fxg6 Nxg6 16. Nxe5 Nxe5 17. Rxf6 0-0-0 18. Nd5 Bg7 19. Rf5 Qe6 20. Qf2 c5 21. Be3 Rdf8 22. Bxc5 dxc5 23. Qxc5+ Nc6 24. c3 Kb8 25. Raf1 Be5 26. b4 Bd6 27. Qc4 Ne5 28. Qd4 Rhg8 29. Nf6 Rg7 30. Rxe5 Qxh3 31. Qxd6+ Ka7 32. Qc5+ Ka8 33. Qxf8+ Ka7 34. Qc5+ Kb8 35. Re8+ 1-0

[Event "Lansing-ch MI op-B"]
[Site "Lansing "]
[Date "1993.??.??"]
[Round "4"]
[White "DiStefano, R."]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "55"]
[EventDate "1993.??.??"]
[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 Nc6 2. Nf3 d6 3. Bb5 a6 4. Ba4 Bg4 5. Bxc6+ bxc6 6. 0-0 Nf6 7. Re1 e5 8. c3 c5 9. d3 Be7 10. h3 Bd7 11. Nbd2 0-0 12. Nf1 g6 13. Ne3 Re8 14. Nc2 Nh5 15. d4 cxd4 16. cxd4 f6 17. dxe5 fxe5 18. Qd5+ Kg7 19. Qd2 h6 20. Qxh6+ Kf7 21. Qh7+ Ng7 22. Qh6 Rh8 23. Qd2 Qc8 24. Ng5+ Bxg5 25. Qxg5 Nh5 26. Re3 Qd8 27. Qxd8 Raxd8 28. Rf3+ 1-0

[Event "Lansing-ch MI op-B"]
[Site "Lansing "]
[Date "1993.??.??"]
[Round "2"]
[White "Foote, G."]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "79"]
[EventDate "1993.??.??"]
[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 Nc6 2. Nf3 d6 3. Bb5 Nf6 4. Qe2 Bg4 5. h3 Bd7 6. c3 a6 7. Ba4 b5 8. Bc2 e5 9. 0-0 Rb8 10. d4 h6 11. d5 Ne7 12. Re1 Ng6 13. b4 Be7 14. a4 Qc8 15. Bd3 Qb7 16. Be3 0-0 17. Nbd2 Nh7 18. axb5 axb5 19. Ra7 Qc8 20. Rea1 Nf4 21. Bxf4 exf4 22. R1a5 Bf6 23. Nd4 Bxd4 24. cxd4 c6 25. dxc6 Bxc6 26. Bxb5 Bxb5 27. Rxb5 Qc1+ 28. Nf1 Rxb5 29. Qxb5 Ng5 30. Qd5 f3 31. Ra8 Qf4 32. Rxf8+ Kxf8 33. e5 fxg2 34. Qxd6+ Kg8 35. Kxg2 Qf3+ 36. Kg1 Nxh3+ 37. Kh2 Nf4 38. Qd8+ Kh7 39. Ne3 Qh3+ 40. Kg1 0-1

[Event "Lansing-ch MI op-B"]
[Site "Lansing "]
[Date "1993.??.??"]
[Round "7"]
[White "Piasecki, V."]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "A04"]
[PlyCount "101"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nc6 2. g3 Nf6 3. Bg2 e5 4. d3 Bc5 5. Nc3 h6 6. Na4 Be7 7. 0-0 d5 8. Re1 Bg4 9. Bd2 Qd7 10. Nc3 0-0-0 11. e4 dxe4 12. Nxe4 Nxe4 13. Rxe4 f5 14. Re1 e4 15. h3 exf3 16. Bxf3 Bxf3 17. Qxf3 Nd4 18. Qd1 Bf6 19. c3 Nc6 20. d4 Rhe8 21. Qf3 Bxd4 22. Rxe8 Bxf2+ 23. Qxf2 Rxe8 24. Rf1 Re5 25. Bf4 Rd5 26. Re1 Rd1 27. Qe2 Rxe1+ 28. Qxe1 Qe7 29. Qf2 h5 30. Be3 Qd7 31. Bxa7 b6 32. Bxb6 cxb6 33. Qxb6 Qa7 34. Qxa7 Nxa7 35. h4 Nc6 36. Kf2 Ne5 37. b4 Nf7 38. a4 g5 39. c4 gxh4 40. gxh4 Ne5 41. c5 Nd3+ 42. Ke3 Nxb4 43. Kf4 Nd3+ 44. Kxf5 Nxc5 45. Kg5 Nxa4 46. Kxh5 Kd8 47. Kg6 Nc5 48. Kf7 Nd7 49. h5 Ne5+ 50. Kf8 Ng4 51. Kf7 1/2-1/2

[Event "East Lansing-ch MI amateur"]
[Site "East Lansing"]
[Date "1992.??.??"]
[Round "?"]
[White "Ball, Elliott B"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "A00"]
[PlyCount "87"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. b4 Nf6 2. Bb2 e6 3. a3 b6 4. c4 Bb7 5. d4 Be7 6. f3 d5 7. e3 Nbd7 8. c5 0-0 9. Qc2 bxc5 10. dxc5 c6 11. Bd3 e5 12. Ne2 Re8 13. Nd2 Bf8 14. e4 d4 15. g4 g6 16. Ng3 Bh6 17. Nc4 Ba6 18. Qb3 Bxc4 19. Bxc4 Qe7 20. Bc1 Bxc1 21. Rxc1 Reb8 22. Qa4 Rc8 23. Ba6 Rc7 24. h4 Nf8 25. h5 Ne6 26. hxg6 fxg6 27. Rc2 Nf4 28. Rch2 Rd8 29. Bc4+ Kh8 30. Ne2 Nxe2 31. Kxe2 Qf8 32. Qd1 Ra8 33. Ba6 Rd8 34. Kd3 Qe8 35. Qd2 Rdd7 36. Qg5 Ng8 37. Bc4 Rg7 38. Qh4 Qe7 39. g5 a5 40. Qg4 axb4 41. axb4 Rb7 42. Qc8 Qc7 43. Rxh7+ Rxh7 44. Qxg8# 1-0

[Event "East Lansing-ch MI amateur"]
[Site "East Lansing"]
[Date "1992.??.??"]
[Round "?"]
[White "Brauker, John"]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "D07"]
[PlyCount "106"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. Nf3 a6 5. a4 e6 6. e3 Na5 7. Ne5 Nb3 8. Ra2 Nxc1 9. Qxc1 Nf6 10. Bxc4 Bb4 11. 0-0 0-0 12. b3 Qe7 13. Re2 c5 14. Qc2 cxd4 15. exd4 Rd8 16. Rd1 Bxc3 17. Qxc3 Nd5 18. Bxd5 Rxd5 19. Qd3 b5 20. Rc2 Bb7 21. Rdc1 Qd6 22. Nxf7 Kxf7 23. Rc7+ Kg8 24. Rxb7 Rxd4 25. Qf3 Rf8 26. Qe2 Rd8 27. h3 Rd1+ 28. Rxd1 Qxd1+ 29. Qxd1 Rxd1+ 30. Kh2 bxa4 31. bxa4 Ra1 32. Rb6 Rxa4 33. Rxe6 Ra2 34. Kg3 a5 35. Ra6 a4 36. Kf3 a3 37. Ke3 h6 38. Ra7 Ra1 39. g4 a2 40. Ke2 Rh1 41. Rxa2 Rxh3 42. Ra7 Rh4 43. Kf3 Rh1 44. Kg2 Re1 45. f3 Kh7 46. Rb7 Re6 47. Kg3 Rg6 48. Rb5 Rf6 49. f4 Rc6 50. f5 Kg8 51. Rb7 Rf6 52. Kf4 Rf7 53. Rb8+ Rf8 1/2-1/2

[Event "Detroit ch-MI opB"]
[Site "Detroit"]
[Date "1992.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Baker, Thomas R"]
[Result "1/2-1/2"]
[ECO "E14"]
[PlyCount "43"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 Bb7 6. Be2 0-0 7. 0-0 d5 8. a3 Be7 9. b4 Nbd7 10. Bb2 c5 11. cxd5 exd5 12. bxc5 bxc5 13. dxc5 Nxc5 14. Nd4 a6 15. Nf5 Re8 16. Nxe7+ Qxe7 17. Nf3 Rab8 18. Nd4 Qd7 19. Nf3 Qe7 20. Nd4 Qd7 21. Nf3 Qe7 22. Nd4 1/2-1/2

[Event "Detroit ch-MI opB"]
[Site "Detroit"]
[Date "1992.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Gaiefsky, S."]
[Result "1-0"]
[ECO "B06"]
[PlyCount "85"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nc3 e6 4. Be2 b6 5. Be3 Bb7 6. h4 h5 7. Qd2 d5 8. e5 Nc6 9. 0-0-0 Nge7 10. Bg5 Qd7 11. g4 hxg4 12. Bxg4 Nf5 13. Bxf5 gxf5 14. Nge2 Ba6 15. Nf4 Bf8 16. Bf6 Rh7 17. Nce2 Ne7 18. Qe3 0-0-0 19. Qa3 Kb7 20. Ng3 Ng8 21. Qf3 Nxf6 22. exf6 Bh6 23. Rh3 Qa4 24. a3 e5 25. Nxf5 Bxf4+ 26. Kb1 c6 27. h5 Ka8 28. Qg4 Bc8 29. dxe5 Be6 30. Rh4 b5 31. Qxf4 Qxf4 32. Rxf4 Rxh5 33. Nd4 Rxe5 34. Nxc6 Rf5 35. Rxf5 Rd6 36. Nd4 Bxf5 37. Nxf5 Rxf6 38. Ne3 Rxf2 39. Nxd5 Kb7 40. Ne3 Kc6 41. Ng4 Rf4 42. Ne5+ Kc5 43. Nd3+ 1-0

[Event "Detroit ch-MI opB"]
[Site "Detroit"]
[Date "1992.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Moceri, P."]
[Result "1/2-1/2"]
[ECO "D37"]
[PlyCount "49"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nc3 h6 4. Nf3 Nf6 5. Bf4 c5 6. cxd5 exd5 7. g3 Bd6 8. Bxd6 Qxd6 9. Bg2 0-0 10. 0-0 Nc6 11. Nb5 Qe7 12. dxc5 Qxc5 13. Nbd4 Nxd4 14. Nxd4 Be6 15. Rc1 Qb6 16. Nxe6 fxe6 17. Rc2 Rac8 18. Qd2 Rxc2 19. Qxc2 Ng4 20. e3 Ne5 21. b3 Nf3+ 22. Bxf3 Rxf3 23. Rc1 e5 24. Kg2 Rf8 25. Qc5 1/2-1/2

[Event "Detroit ch-MI opB"]
[Site "Detroit"]
[Date "1992.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Smeckert, Dennis"]
[Result "1-0"]
[ECO "D09"]
[PlyCount "65"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Be6 6. Nbd2 Qd7 7. Bg2 0-0-0 8. a3 Nge7 9. 0-0 Ng6 10. Qb3 Bc5 11. Ne4 Na5 12. Qc2 Be7 13. b3 h5 14. Rd1 d3 15. exd3 h4 16. Neg5 hxg3 17. fxg3 Bxg5 18. Nxg5 Nxb3 19. Qxb3 Qd4+ 20. Kh1 c6 21. Qb2 Qc5 22. Nxe6 Rxh2+ 23. Kxh2 Rh8+ 24. Bh3 fxe6 25. Bf4 Nxf4 26. gxf4 Qe3 27. Qg2 Qxf4+ 28. Kh1 g5 29. Rg1 Qxe5 30. Rae1 Qf5 31. Re3 g4 32. Qxg4 Qc5 33. Qxe6+ 1-0

[Event "East Lansing-ch MI amateur"]
[Site "East Lansing"]
[Date "1992.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Snobeck, M."]
[Result "1-0"]
[ECO "B68"]
[PlyCount "73"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qd2 Nc6 8. 0-0-0 Be7 9. f4 Bd7 10. Be2 Rc8 11. Bf3 e5 12. Nb3 Be6 13. Bxf6 Bxf6 14. Qxd6 Qxd6 15. Rxd6 exf4 16. Ne2 Nb4 17. Nbd4 Nd3+ 18. Kb1 Be7 19. Rb6 Nc5 20. Nxe6 Nxe6 21. Rxb7 Bc5 22. Rd1 0-0 23. Nc3 Rfd8 24. Rxd8+ Rxd8 25. Nd5 Ng5 26. b4 Be3 27. c4 Ne6 28. c5 Nd4 29. Rb6 Kf8 30. Rxa6 Rc8 31. Nb6 Rd8 32. Ra8 Ke7 33. Rxd8 Kxd8 34. Kb2 Kc7 35. Kc3 Kc6 36. a4 Ne6 37. e5+ 1-0

[Event "East Lansing-ch MI amateur"]
[Site "East Lansing"]
[Date "1992.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Waite, Larry"]
[Result "1/2-1/2"]
[ECO "B56"]
[PlyCount "64"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nf6 6. f3 Qb6 7. Nb3 Be6 8. Qe2 Bxb3 9. axb3 g6 10. Be3 Qd8 11. Qf2 a6 12. Bb6 Qc8 13. Nd5 Nxd5 14. exd5 Nd8 15. Bd4 f6 16. Bd3 Bg7 17. 0-0 0-0 18. Rfe1 e5 19. dxe6 Nxe6 20. Bc4 Re8 21. Rxe6 Rxe6 22. Re1 Kh8 23. Bxe6 Qc6 24. c4 Rd8 25. Bd5 Qd7 26. Qe3 h6 27. Qe6 f5 28. Qxd7 Bxd4+ 29. Kf1 Rxd7 30. Re8+ Kg7 31. Rb8 b6 32. Rg8+ Kf6 1/2-1/2

[Event "Detroit ch-MI opB"]
[Site "Detroit"]
[Date "1992.??.??"]
[Round "?"]
[White "Kane, Paul"]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "D07"]
[PlyCount "90"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nc6 2. Nf3 d5 3. c4 Bg4 4. e3 e6 5. Be2 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 dxc4 8. Qc2 Nge7 9. Nbd2 Bf5 10. Qxc4 0-0 11. 0-0 Nd5 12. Ne5 Nb6 13. Qc1 Nxe5 14. dxe5 Rc8 15. Rd1 Qe7 16. Nf3 c6 17. Rd2 Rfd8 18. h3 h6 19. Nd4 Be4 20. f3 Bh7 21. e4 Nd7 22. f4 Bxe4 23. Bd3 Bxd3 24. Rxd3 Nc5 25. Rd1 Rd5 26. Qe3 Rcd8 27. Rd2 Qc7 28. b4 Nd7 29. Rad1 Nb6 30. Qc3 Nc8 31. a4 Ne7 32. Nb5 Qb6+ 33. Nd4 a5 34. b5 cxb5 35. axb5 Nf5 36. Kf2 Nxd4 37. Qe3 R8d7 38. g4 Qd8 39. Rg1 Nxb5 40. Re2 Rd3 41. Qe4 Nc3 42. Qc4 Nxe2 43. Kxe2 Rd2+ 44. Ke3 Qb6+ 45. Kf3 Qf2+ 0-1

[Event "Detroit ch-MI opB"]
[Site "Detroit"]
[Date "1992.??.??"]
[Round "?"]
[White "Vaughn, G."]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "B00"]
[PlyCount "70"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nc6 2. e4 d5 3. e5 Bf5 4. Bb5 Qd7 5. Nf3 a6 6. Bd3 Bg4 7. c3 0-0-0 8. Nbd2 e6 9. b4 Na7 10. a4 h6 11. b5 a5 12. Nb3 b6 13. 0-0 Ne7 14. Bd2 g5 15. c4 dxc4 16. Bxc4 Nd5 17. Rc1 Bb4 18. Bxb4 Nxb4 19. Nxa5 bxa5 20. b6 Nac6 21. Qe2 cxb6 22. Ba6+ Nxa6 23. Qxa6+ Kc7 24. Qa7+ Kc8 25. Qxb6 Bxf3 26. gxf3 Qb7 27. Rxc6+ Kb8 28. Rb1 Rd7 29. Rb5 Qxb6 30. Rcxb6+ Ka7 31. Rd6 Rxd6 32. exd6 Rd8 33. Rxa5+ Kb6 34. Rb5+ Kc6 35. Kf1 Rxd6 1/2-1/2

[Event "Detroit ch-MI opB"]
[Site "Detroit"]
[Date "1992.??.??"]
[Round "?"]
[White "Wisckol, R."]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "E38"]
[PlyCount "53"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. Nf3 c5 5. Qc2 cxd4 6. Nxd4 Nc6 7. e3 0-0 8. Bd2 a6 9. Bd3 Qc7 10. Nf3 h6 11. 0-0 Ne5 12. Nxe5 Qxe5 13. f4 Qc7 14. Ne4 Nxe4 15. Bxb4 Nc5 16. f5 f6 17. Rf3 Re8 18. fxe6 dxe6 19. Bg6 Rd8 20. Rd1 b6 21. Bc3 Rxd1+ 22. Qxd1 e5 23. Qd5+ Ne6 24. Qxa8 Nf8 25. Be4 Kh8 26. Qc6 Qb8 27. Qe8 1-0

[Event "East Lansing-ch MI op-B"]
[Site "East Lansing"]
[Date "1991.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Rosenberg, Steve"]
[Result "0-1"]
[ECO "A05"]
[PlyCount "148"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 d6 5. d3 0-0 6. Nbd2 e5 7. e4 Nc6 8. c3 Nd7 9. a4 b6 10. b4 a5 11. b5 Ne7 12. d4 Bb7 13. Bb2 Kh8 14. Qb3 Ng8 15. Nh4 Qe7 16. Rfe1 Nh6 17. Nf1 Qf6 18. Rad1 Rfd8 19. Ne3 Qe7 20. Nd5 Bxd5 21. exd5 f6 22. dxe5 fxe5 23. Qc2 Nc5 24. Ba3 Nd7 25. Qxg6 Qxh4 26. Qxh7+ Kxh7 27. gxh4 Nf6 28. Be4+ Nxe4 29. Rxe4 Rg8 30. Kf1 Raf8 31. Ke2 Nf5 32. Rc4 Rf7 33. Rg1 Nh6 34. Re4 Rgf8 35. Rf1 Rf3 36. Re3 Rxe3+ 37. fxe3 Rxf1 38. Kxf1 Nf5 39. e4 Nxh4 40. Kf2 Kg6 41. Kg3 Kh5 42. Bc1 Ng6 43. c4 Bf6 44. Bd2 Bg5 45. Bc3 Nf4 46. Bb2 Nd3 47. Bc3 Nc5 48. Kf3 Nxa4 49. Be1 Nc5 50. Bc3 a4 51. Bb4 Bc1 52. Ke2 a3 53. Kd1 Bb2 54. Kc2 Nxe4 55. Kb3 Nc5+ 56. Ka2 e4 57. Bd2 Nd3 58. h3 Nf2 59. Be3 Nxh3 60. Bxb6 cxb6 61. c5 dxc5 62. d6 Bf6 63. Kxa3 e3 64. Kb3 e2 65. Kc4 e1Q 66. Kd5 Qe5+ 67. Kc6 Nf4 68. d7 Qd5+ 69. Kc7 Be5+ 70. Kd8 Ne6+ 71. Ke7 Qd6+ 72. Kf7 Ng5+ 73. Ke8 Bf6 74. d8Q Qxd8# 0-1

[Event "East Lansing-ch MI op-B"]
[Site "East Lansing"]
[Date "1991.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Steen, H."]
[Result "1-0"]
[ECO "A05"]
[PlyCount "109"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 d6 6. Nbd2 c5 7. e4 Bg4 8. h3 Bxf3 9. Bxf3 Nbd7 10. a4 Qc7 11. Nc4 Rab8 12. Qe2 a6 13. a5 e5 14. g4 h6 15. h4 Ne8 16. Bg2 f5 17. gxf5 gxf5 18. exf5 Rxf5 19. Bh3 Rf8 20. Qg4 Ndf6 21. Qg2 Kh8 22. Kh1 d5 23. Ne3 Rd8 24. Nf5 Kh7 25. Rg1 Qf7 26. Nxg7 Qxg7 27. Bf5+ Kh8 28. Qh2 Qf7 29. Bxh6 Rg8 30. Rxg8+ Nxg8 31. Qxe5+ Nef6 32. Bg5 Re8 33. Bxf6+ Nxf6 34. Qc3 Qe7 35. Bg6 d4 36. Qd2 Rg8 37. Qh6+ Nh7 38. Qxh7+ Qxh7 39. Bxh7 Kxh7 40. Rg1 Rf8 41. Rg2 Rf4 42. Kg1 Kh6 43. Rg5 Rxh4 44. Rxc5 Rg4+ 45. Kf1 Rg7 46. Rc4 Rd7 47. Ke2 Kg5 48. Kf3 Kf5 49. Rc5+ Ke6 50. Ke4 Rd6 51. f4 b6 52. axb6 Rxb6 53. b3 Rd6 54. Rc4 Kf6 55. Rxd4 1-0

[Event "East Lansing-ch MI op-B"]
[Site "East Lansing"]
[Date "1991.??.??"]
[Round "?"]
[White "Dyer, Todd"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "A46"]
[PlyCount "83"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 e6 3. Bd3 d6 4. Nf3 Be7 5. 0-0 0-0 6. Nbd2 Nc6 7. c4 e5 8. dxe5 dxe5 9. Qc2 Nb4 10. Bxh7+ Nxh7 11. Qc3 f6 12. b3 a5 13. Nh4 Qe8 14. e4 Qh5 15. Qg3 Nc2 16. Rb1 Nd4 17. Kh1 Ne2 18. Qf3 Bg4 19. Qe3 Qxh4 20. Nf3 Nxc1 21. Nxh4 Nxb3 22. Qxb3 b6 23. c5+ Rf7 24. cxb6 Rb8 25. b7 Be2 26. Rfc1 Bd8 27. Nf5 Ba6 28. Qd5 Bxb7 29. Rxb7 Rxb7 30. Qxb7 Rd7 31. Qb3+ Kf8 32. Rd1 Rxd1+ 33. Qxd1 Be7 34. Nxe7 Kxe7 35. h4 Nf8 36. Qc1 Kd7 37. Qc5 Ne6 38. Qxa5 Nf4 39. a4 g5 40. hxg5 fxg5 41. Qxe5 Nd3 42. Qd4+ 1-0

[Event "East Lansing-ch MI op-B"]
[Site "East Lansing"]
[Date "1991.??.??"]
[Round "?"]
[White "McCarter, Robert"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "A46"]
[PlyCount "57"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. c3 b6 5. Bd3 Ba6 6. Bxa6 Nxa6 7. Qd3 Nc7 8. 0-0 d5 9. Nbd2 cxd4 10. exd4 Be7 11. Ne5 0-0 12. f4 Bd6 13. Ndf3 Ne4 14. Ng5 Nxg5 15. fxg5 f6 16. gxf6 Rxf6 17. Bd2 Bxe5 18. dxe5 Rf8 19. Qg3 Rxf1+ 20. Rxf1 g6 21. Bg5 Qd7 22. Bh6 Re8 23. Rf6 Qb5 24. Rxg6+ Kh8 25. Bg7+ Kg8 26. Bf6+ Kf7 27. Rg7+ Kf8 28. Rg8+ Kf7 29. Qg7# 1-0

[Event "East Lansing-ch MI op-B"]
[Site "East Lansing"]
[Date "1991.??.??"]
[Round "?"]
[White "Shoulders, Charles T"]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "E11"]
[PlyCount "76"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Qe7 5. Bg2 Bxd2+ 6. Nxd2 d6 7. Ngf3 Nc6 8. b4 0-0 9. 0-0 Nxb4 10. Re1 Nc6 11. e4 e5 12. d5 Nb8 13. a4 a5 14. Rc1 b6 15. Re3 Na6 16. Ne1 Bd7 17. Nd3 Qe8 18. Ra1 Ng4 19. Re1 f5 20. h3 Nh6 21. f4 exf4 22. Nxf4 Qf7 23. Ne6 Rfe8 24. exf5 Qxf5 25. Rf1 Qe5 26. Nf3 Qe3+ 27. Kh2 Bxe6 28. Re1 Qc5 29. dxe6 Re7 30. Ng5 Rae8 31. Qc2 g6 32. Be4 Qxg5 33. h4 Qc5 34. Bxg6 Nb4 35. Qe4 Rxe6 36. Bxe8 Rxe4 37. Rxe4 Qf2+ 38. Kh3 Qf5+ 0-1

[Event "Detroit op"]
[Site "Detroit"]
[Date "1990.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Hill, Michael1111"]
[Result "1-0"]
[ECO "A85"]
[PlyCount "97"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Bg5 Be7 5. e3 0-0 6. Bd3 d6 7. Nf3 Nbd7 8. 0-0 Qe8 9. Re1 b6 10. e4 fxe4 11. Nxe4 Bb7 12. Qe2 Nxe4 13. Bxe4 Bxe4 14. Qxe4 Bxg5 15. Nxg5 Nf6 16. Qxe6+ Qxe6 17. Rxe6 h6 18. Nf3 Kf7 19. Rae1 Rae8 20. Rxe8 Rxe8 21. Rxe8 Kxe8 22. d5 Kf7 23. Nd2 Kg6 24. f3 Kf5 25. Kf2 Nh5 26. g4+ Kg5 27. gxh5 Kxh5 28. Kg3 g5 29. Ne4 Kg6 30. Nc3 a6 31. Ne2 h5 32. Nd4 Kf6 33. f4 gxf4+ 34. Kxf4 h4 35. Nf3 h3 36. Ng5 Ke7 37. Nxh3 Kd7 38. Ng5 c6 39. h4 c5 40. Kf5 Ke7 41. h5 Kf8 42. h6 Kg8 43. h7+ Kh8 44. Ke6 b5 45. b3 b4 46. Kxd6 a5 47. Kxc5 a4 48. Kxb4 axb3 49. axb3 1-0

[Event "Detroit op"]
[Site "Detroit"]
[Date "1990.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Shields, B."]
[Result "1-0"]
[ECO "E10"]
[PlyCount "57"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 Bd6 5. Nc3 e5 6. Bg5 a6 7. Bxf6 Qxf6 8. Ne4 Qe7 9. Nxd6+ Qxd6 10. e4 Qc7 11. Bd3 Qa5+ 12. Nd2 d6 13. 0-0 0-0 14. f4 Nd7 15. f5 b5 16. b3 Nf6 17. g4 Qc3 18. g5 Nxd5 19. exd5 Qxd3 20. f6 Qe3+ 21. Kh1 Qxg5 22. fxg7 Qxg7 23. Rg1 Bf5 24. Rxg7+ Kxg7 25. Qe2 b4 26. h4 Kh8 27. Qf3 Bd7 28. Qf6+ Kg8 29. Rg1+ 1-0

[Event "Detroit op"]
[Site "Detroit"]
[Date "1990.??.??"]
[Round "?"]
[White "Repkin, V."]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "A32"]
[PlyCount "103"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 e6 5. Bg5 a6 6. Nc3 Be7 7. f3 d6 8. Qd2 Qc7 9. e4 0-0 10. Be2 Nc6 11. Be3 Rd8 12. Rc1 Rb8 13. 0-0 Bd7 14. Rfd1 Nxd4 15. Bxd4 Bc6 16. Nd5 Bxd5 17. cxd5 Qd7 18. dxe6 fxe6 19. Bb6 Rdc8 20. Bc4 d5 21. exd5 exd5 22. Bxd5+ Nxd5 23. Rxc8+ Qxc8 24. Qxd5+ Kh8 25. Bd4 Qd8 26. Bxg7+ Kxg7 27. Qe5+ Bf6 28. Qg3+ Kf7 29. Rxd8 Rxd8 30. Qc7+ Ke8 31. Qxb7 Bd4+ 32. Kf1 Rd7 33. Qxa6 Ke7 34. b4 Bc3 35. Qc4 Be5 36. Qe4 Kf6 37. Qh4+ Ke6 38. Qc4+ Kf6 39. b5 Rd4 40. Qc6+ Kf5 41. Qh6 Bf6 42. Qxh7+ Ke6 43. Qc7 Be5 44. Qc6+ Rd6 45. Qc4+ Kf6 46. f4 Bd4 47. a4 Kf5 48. g3 Bb6 49. Qf7+ Kg4 50. Ke2 Rd4 51. Qg6+ Kh3 52. Qxb6 1-0

[Event "Detroit op"]
[Site "Detroit"]
[Date "1990.??.??"]
[Round "?"]
[White "Ross, Gregory"]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "46"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. f4 d6 2. Nf3 g6 3. d4 Bg7 4. e4 Nf6 5. Bd3 c5 6. e5 Nfd7 7. c3 0-0 8. 0-0 cxd4 9. cxd4 dxe5 10. fxe5 Nb6 11. Be3 Nc6 12. Qd2 Bg4 13. Bb5 Bxf3 14. Rxf3 Qc7 15. Bh6 Nxe5 16. Rc3 Nec4 17. Bxg7 Kxg7 18. Qe2 Qd6 19. Bxc4 Qxd4+ 20. Kf1 Rad8 21. Na3 Qf4+ 22. Kg1 Qd4+ 23. Kf1 Qf4+ 1/2-1/2

[Event "Detroit op"]
[Site "Detroit"]
[Date "1990.??.??"]
[Round "?"]
[White "Skidmore, Mike"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "71"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 g6 4. b3 Bg7 5. d3 0-0 6. Bb2 Bg4 7. Be2 c6 8. h3 Bxf3 9. Bxf3 e5 10. Qd2 Re8 11. 0-0-0 b5 12. Bg4 Qe7 13. f4 Qf8 14. Kb1 Nbd7 15. f5 a5 16. fxg6 hxg6 17. Rdf1 a4 18. Qg5 Nh7 19. Qh4 Bf6 20. Qg3 Qe7 21. h4 Ndf8 22. Qf3 axb3 23. cxb3 Ne6 24. Bxe6 Qxe6 25. g4 Bg7 26. g5 Kf8 27. h5 Nxg5 28. Qg3 Bf6 29. hxg6 fxg6 30. Qxg5 Ke7 31. Rh7+ Kd8 32. Rxf6 Qg8 33. Rxd6+ Kc8 34. Rxc6+ Kb8 35. Rb6+ Kc8 36. Qg4+ 1-0

[Event "Plymouth ch-MI op"]
[Site "Plymouth"]
[Date "1984.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Carpenter, T."]
[Result "1/2-1/2"]
[ECO "A40"]
[PlyCount "87"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 Nc6 4. Nf3 Nf6 5. e4 0-0 6. e5 Ng4 7. Bf4 d6 8. exd6 cxd6 9. Qd2 e5 10. dxe5 dxe5 11. Bg5 f6 12. Bh4 Re8 13. 0-0-0 e4 14. Qxd8 Nxd8 15. Nxe4 Bf5 16. Nd6 Re6 17. Nxf5 gxf5 18. Nd4 Re5 19. Bd3 Bh6+ 20. Kc2 Bg5 21. Bxg5 fxg5 22. Rdf1 Nc6 23. Nf3 Nb4+ 24. Kc3 Nxd3 25. Kxd3 Ra5 26. h3 Ne5+ 27. Nxe5 Rd8+ 28. Kc3 Rxe5 29. f4 Re3+ 30. Kb4 Rd2 31. fxg5 Rxb2+ 32. Kc5 Rxg2 33. Rxf5 Rxa2 34. Rhf1 Ra5+ 35. Kd4 Rxf5 36. Rxf5 Rxh3 37. Ra5 a6 38. Kc5 h6 39. g6 Rh1 40. Kb6 Rc1 41. Kxb7 Rxc4 42. Kxa6 Rc6+ 43. Kb7 Rxg6 44. Rh5 1/2-1/2

[Event "Plymouth ch-MI op"]
[Site "Plymouth"]
[Date "1984.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Davis, Jim"]
[Result "0-1"]
[ECO "E04"]
[PlyCount "94"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 dxc4 6. 0-0 Be7 7. Ne5 0-0 8. Nxc4 Nbd7 9. a4 Re8 10. Nc3 Nf8 11. e4 N6d7 12. Be3 Nb6 13. Nxb6 Qxb6 14. Qc2 Qa5 15. Rfd1 Bb4 16. f4 a6 17. e5 Rb8 18. Be4 Bd7 19. Bd3 Rec8 20. Kg2 c5 21. dxc5 h6 22. Ne4 Bc6 23. Rdc1 Bxe4+ 24. Bxe4 Nd7 25. c6 bxc6 26. Qd1 Rd8 27. Qf3 c5 28. Rc2 Nb6 29. Qe2 Nd5 30. Bd2 Bxd2 31. Bxd5 Rxd5 32. Rd1 Rbd8 33. b3 Bc3 34. Rxd5 Rxd5 35. Qc4 Bb4 36. Kh3 Qb6 37. Kg4 a5 38. h4 Qb7 39. Qe4 Qe7 40. Rc4 f5+ 41. exf6 Qxf6 42. h5 Qf5+ 43. Kf3 Rd3+ 44. Kg2 Rxb3 45. g4 Qxg4+ 46. Kf2 Qh4+ 47. Ke2 Qe1# 0-1

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1984.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Lehotzky, Attila"]
[Result "0-1"]
[ECO "A32"]
[PlyCount "46"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 d5 6. Bg2 Bb4+ 7. Bd2 Bxd2+ 8. Qxd2 0-0 9. cxd5 Nxd5 10. e4 Nb6 11. 0-0 Qf6 12. Rd1 Rd8 13. f4 e5 14. fxe5 Qxe5 15. Na3 Bg4 16. Nac2 Bxd1 17. Rxd1 Nc6 18. b3 Nxd4 19. Nxd4 Rd7 20. Qf2 Rad8 21. Rf1 Qxd4 22. Kh1 Qxf2 23. Rxf2 Rd1+ 0-1

[Event "Plymouth ch-MI op"]
[Site "Plymouth"]
[Date "1984.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Praedel, R."]
[Result "0-1"]
[ECO "D90"]
[PlyCount "104"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 c6 6. cxd5 cxd5 7. Bf4 a6 8. h3 0-0 9. e3 Nc6 10. Bd3 Re8 11. 0-0 b5 12. a4 b4 13. Na2 a5 14. Bb5 Bd7 15. Rfc1 Qb6 16. Rc2 e6 17. Rac1 Rac8 18. Ne5 Nxe5 19. Rxc8 Rxc8 20. Rxc8+ Bxc8 21. Bxe5 Ba6 22. Bxa6 Qxa6 23. Nxb4 Qb6 24. Qc3 Qxb4 25. Qc8+ Qf8 26. Qxf8+ Kxf8 27. Bc7 Ke7 28. Bxa5 Ne4 29. b4 Kd7 30. b5 Nd6 31. Kf1 Nc4 32. Bb4 Bf6 33. Ke2 Bd8 34. Kd3 Nb2+ 35. Kc3 Nxa4+ 36. Kb3 Nb6 37. Ba5 Kc7 38. Kb4 Be7+ 39. Kb3 Kb7 40. Bb4 Bxb4 41. Kxb4 Nc4 42. Kc5 f5 43. Kb4 Kb6 44. g3 Nd6 45. f3 Nxb5 46. f4 Nd6 47. Kc3 Ne4+ 48. Kd3 Nxg3 49. h4 Kb5 50. Kc3 Ne4+ 51. Kd3 h6 52. Ke2 Kc4 0-1

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1984.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Swartz, Jordan"]
[Result "1-0"]
[ECO "D30"]
[PlyCount "69"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 c5 5. Bxb4 cxb4 6. Qa4+ Nc6 7. Ne5 Nge7 8. e3 f6 9. Nxc6 Nxc6 10. Nd2 0-0 11. cxd5 Qxd5 12. Qb3 Qh5 13. Be2 Qg6 14. 0-0 a5 15. Bc4 f5 16. a4 f4 17. Kh1 b6 18. d5 Nd8 19. dxe6 Bxe6 20. Bxe6+ Nxe6 21. exf4 Rxf4 22. Rae1 Rf6 23. f4 Re8 24. Ne4 Rf5 25. Nd6 Re7 26. Nxf5 Qxf5 27. Re5 Qf6 28. Rd1 Qxf4 29. Rxe6 Kf8 30. Rd8+ Kf7 31. Rxe7+ Kxe7 32. Qd1 Qc7 33. Rd3 Qc6 34. Re3+ Kf7 35. Qf3+ 1-0

[Event "Plymouth ch-MI op"]
[Site "Plymouth"]
[Date "1984.??.??"]
[Round "?"]
[White "Fuson, J."]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "116"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5 5. Nf3 g6 6. g3 Qe4+ 7. Be2 Bh3 8. Rg1 Nc6 9. d3 Qd5 10. Bf4 e5 11. Be3 0-0-0 12. Ng5 Be6 13. Nxe6 Qxe6 14. g4 Kb8 15. Qd2 Bg7 16. b3 e4 17. 0-0-0 exd3 18. Bxd3 Ne5 19. Qb4 Nxd3+ 20. Rxd3 Rxd3 21. cxd3 Rd8 22. Qe4 Qd6 23. Qc4 Rd7 24. h3 Qa3+ 25. Kd2 Qxa2+ 26. Qc2 Qa5+ 27. Ke2 Qc3 28. Qxc3 Bxc3 29. Bf4 a5 30. Rc1 Bb4 31. Rc4 b5 32. Re4 Re7 33. Be5 Kb7 34. f4 Kc6 35. h4 Bd6 36. Bxd6 Rxe4+ 37. dxe4 Kxd6 38. Kd3 Kc5 39. e5 a4 40. bxa4 bxa4 41. Kc3 a3 42. Kb3 Kd4 43. Kxa3 Ke4 44. Kb3 Kxf4 45. Kc3 Kxe5 46. Kd3 Kf4 47. Ke2 Kxg4 48. Ke3 Kxh4 49. Kf4 c5 50. Ke4 Kg3 51. Kd5 h5 52. Kxc5 h4 53. Kd5 f5 54. Ke5 f4 55. Ke4 h3 56. Kd3 h2 57. Ke2 Kg2 58. Kd3 h1Q 0-1

[Event "Plymouth ch-MI op"]
[Site "Plymouth"]
[Date "1984.??.??"]
[Round "?"]
[White "Keck, M."]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "D80"]
[PlyCount "54"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. c5 Bg7 5. Bd2 0-0 6. Nf3 c6 7. g3 b6 8. b4 bxc5 9. bxc5 Ne4 10. Bg2 f5 11. 0-0 Ba6 12. Re1 Nd7 13. Nxe4 fxe4 14. Ng5 Qc8 15. Ne6 Rf7 16. Nxg7 Kxg7 17. Bh3 Qc7 18. f3 exf3 19. exf3 Nf6 20. Bf4 Qd8 21. Qd2 Bc8 22. Bxc8 Rxc8 23. Rab1 Nh5 24. Be5+ Kf8 25. Qh6+ Kg8 26. f4 Nf6 27. Rb7 Ng4 1/2-1/2

[Event "Plymouth ch-MI op"]
[Site "Plymouth"]
[Date "1984.??.??"]
[Round "?"]
[White "King, J."]
[Black "Choyke, Jack"]
[Result "1/2-1/2"]
[ECO "B04"]
[PlyCount "46"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nf3 g6 7. Bd3 Bg7 8. 0-0 Nc6 9. Be3 0-0 10. Nbd2 d5 11. Rc1 e5 12. dxe5 Nxe5 13. Nb3 Nxf3+ 14. Qxf3 dxc4 15. Bxc4 Nxc4 16. Rxc4 Bxb2 17. Rd1 Qf6 18. Rf4 Qe7 19. Bc5 Qc7 20. Bxf8 Kxf8 21. h3 Be6 22. Nd4 Bxd4 23. Rfxd4 Bxa2 1/2-1/2

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1984.??.??"]
[Round "?"]
[White "Nowicki, Benjamin"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "C11"]
[PlyCount "139"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. d4 e6 5. Nf3 c5 6. Bb5 Nc6 7. Bxc6 bxc6 8. 0-0 Qb6 9. Na4 Qa5 10. c3 Be7 11. Bd2 Ba6 12. Re1 0-0 13. dxc5 Nxc5 14. Nxc5 Qxc5 15. b4 Qb6 16. a4 Qc7 17. Qc2 Bc4 18. a5 Rfb8 19. Rab1 c5 20. Qa4 a6 21. Rb2 Rb7 22. Rc1 Rab8 23. Qa3 cxb4 24. cxb4 Rb5 25. Nd4 R5b7 26. f4 Qd7 27. h3 g6 28. Kh2 h5 29. g3 Kg7 30. h4 Bb5 31. Qc3 Bc4 32. Qa3 f6 33. Rcb1 fxe5 34. fxe5 Bb5 35. Qe3 Bc4 36. Qh6+ Kf7 37. Qh7+ Ke8 38. Qg8+ Bf8 39. Qxg6+ Qf7 40. Qxe6+ Qxe6 41. Nxe6 Ke7 42. Nd4 Ra8 43. Bf4 Bg7 44. Nf5+ Kf8 45. Nxg7 Kxg7 46. Rc1 Re8 47. Bg5 Re6 48. Bf6+ Kg6 49. Rg1 Rd7 50. g4 Bb5 51. gxh5+ Kxh5 52. Rbg2 Bd3 53. Rg8 Be4 54. Rh8+ Rh7 55. Rd8 Rf7 56. Rg5+ Kh6 57. Rh8+ Bh7 58. Kg3 Rexf6 59. exf6 Rxf6 60. Rxd5 Rg6+ 61. Rg5 Rxg5+ 62. hxg5+ Kg7 63. Rxh7+ Kxh7 64. Kf4 Kg6 65. Kg4 Kg7 66. Kf5 Kf7 67. g6+ Kg7 68. Kg5 Kg8 69. Kf6 Kf8 70. Ke6 1-0

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1984.??.??"]
[Round "?"]
[White "Roberts, K."]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "D94"]
[PlyCount "19"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Nf3 dxc4 6. Bxc4 Nfd7 7. Bxf7+ Kxf7 8. Ng5+ Kf6 9. Nce4+ Kf5 10. g4# 1-0

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1984.??.??"]
[Round "?"]
[White "Theuerle, P."]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "C11"]
[PlyCount "131"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. d4 e6 5. Nf3 c5 6. Be3 Nc6 7. Bb5 Qc7 8. Bxc6 bxc6 9. Ne2 Be7 10. c3 0-0 11. 0-0 Rb8 12. Qc2 Ba6 13. Rfe1 Rfc8 14. Ng5 Bxg5 15. Bxg5 cxd4 16. cxd4 c5 17. Rac1 Rb7 18. Qd2 Qb8 19. b3 cxd4 20. Nxd4 Rbc7 21. Rcd1 Rc3 22. Qf4 Nc5 23. Re3 Nd3 24. Qf3 Qc7 25. h3 h6 26. Bf4 Nxf4 27. Qxf4 Rxe3 28. fxe3 Qc3 29. Kh2 Bd3 30. Qf2 Be4 31. Qd2 Qc7 32. Nf3 Bxf3 33. gxf3 Qxe5+ 34. f4 Qc3 35. Qxc3 Rxc3 36. e4 dxe4 37. Rd2 Rd3 38. Re2 f5 39. h4 Kf7 40. b4 Rd7 41. b5 Kf6 42. a4 Rb7 43. Rg2 Rb6 44. Rb2 a6 45. a5 Rxb5 46. Rxb5 axb5 47. a6 e3 48. Kg2 e2 49. Kf2 b4 50. a7 b3 51. a8Q b2 52. Qa2 b1Q 53. Qxb1 g5 54. Qb2+ Kg6 55. fxg5 hxg5 56. hxg5 Kxg5 57. Qxe2 Kf6 58. Kf3 e5 59. Qe3 Ke6 60. Qb6+ Kf7 61. Qd6 Kg7 62. Qxe5+ Kg6 63. Kf4 Kh6 64. Qf6+ Kh5 65. Qg7 Kh4 66. Qh6# 1-0

[Event "Plymouth ch-MI op"]
[Site "Plymouth"]
[Date "1984.??.??"]
[Round "?"]
[White "Theuerle, P."]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "39"]
[EventDate "1984.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 Ne4 4. Qf3 Nxc3 5. Qxc3 g6 6. e6 d4 7. exf7+ Kxf7 8. Qf3+ Ke8 9. Bc4 Qd6 10. Qf7+ Kd8 11. d3 Nc6 12. Nf3 Ne5 13. Nxe5 Qxe5+ 14. Kf1 Bg7 15. Bf4 Qf6 16. Qd5+ Ke8 17. Bxc7 e6 18. Re1 Kf7 19. Qe4 Re8 20. Bb5 1-0

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Riggins, D."]
[Result "0-1"]
[ECO "B04"]
[PlyCount "106"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Nb6 5. exd6 cxd6 6. g3 g6 7. Bg2 Bg7 8. 0-0 0-0 9. Re1 Nc6 10. a4 Bg4 11. Be3 Rc8 12. h3 Bxf3 13. Bxf3 Nc4 14. b3 Nxe3 15. fxe3 e5 16. d5 e4 17. c3 exf3 18. dxc6 Rxc6 19. Qxf3 Qc8 20. Rc1 Qxh3 21. Ra2 Qe6 22. c4 Rc7 23. Nc3 Bxc3 24. Rxc3 Re8 25. Rf2 Qe5 26. Rd3 Re6 27. Qf4 Qc5 28. Qd4 Rce7 29. Qxc5 dxc5 30. Rf3 Kg7 31. g4 Re5 32. Kg2 Rg5 33. Rg3 h5 34. gxh5 Rxh5 35. Kf2 b6 36. Kf3 Rf5+ 37. Kg2 g5 38. Rd5 Rxd5 39. cxd5 Re5 40. e4 Rxe4 41. Rxg5+ Kf6 42. Kf3 Rd4 43. Rg3 Rxd5 44. Ke3 Rd4 45. Rf3+ Ke6 46. Rf4 Rxf4 47. Kxf4 Kd5 48. Ke3 f5 49. Kf4 Kd4 50. Kxf5 Kc3 51. Ke5 Kxb3 52. Kd5 c4 53. Kd4 c3 0-1

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Swartz, Jordan"]
[Result "0-1"]
[ECO "B24"]
[PlyCount "142"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. d3 Nf6 4. g3 e5 5. Bg2 Nc6 6. Nh3 Nd4 7. 0-0 h6 8. f3 Bd7 9. a4 Qc8 10. Nf2 Be7 11. b3 a6 12. Bd2 Be6 13. Ne2 Nh5 14. c4 Bg5 15. Nxd4 cxd4 16. Qc2 Be3 17. Bxe3 dxe3 18. Nd1 Qc5 19. Qe2 Nf4 20. Qxe3 Nxd3 21. Qxc5 Nxc5 22. Rb1 b5 23. axb5 axb5 24. Ne3 0-0 25. Rfc1 Rfb8 26. Bf1 b4 27. Rb2 Ra3 28. Rcb1 Rba8 29. Be2 g6 30. Nc2 Ra2 31. Nxb4 Rxb2 32. Rxb2 Ra3 33. Nc2 Rxb3 34. Rxb3 Nxb3 35. g4 Nd2 36. Ne3 Kg7 37. h4 f6 38. Kf2 Kf7 39. Ke1 Nb3 40. Kd1 Nd4 41. Kd2 Ke7 42. Bd1 Kd8 43. Nc2 Nxc2 44. Bxc2 Bxc4 45. Bd3 Bxd3 46. Kxd3 Kd7 47. Kc4 Kc6 48. h5 g5 49. Kd3 Kc5 50. Kc3 d5 51. exd5 Kxd5 52. Kd3 Kd6 53. Ke4 Ke6 54. Kd3 f5 55. Ke3 e4 56. gxf5+ Kxf5 57. fxe4+ Kg4 58. e5 Kxh5 59. e6 Kg6 60. Ke4 Kf6 61. Kd5 Ke7 62. Ke5 h5 63. Kf5 h4 64. Kg4 Kxe6 65. Kh3 Kf5 66. Kh2 Kg4 67. Kg2 h3+ 68. Kh1 Kf3 69. Kg1 g4 70. Kh1 Kf2 71. Kh2 g3+ 0-1

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Choyke, Jack"]
[Black "Theuerle, P."]
[Result "0-1"]
[ECO "C01"]
[PlyCount "116"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 c6 3. Nf3 Be7 4. Nbd2 d6 5. c3 Nf6 6. Be2 Qc7 7. Qc2 Nbd7 8. 0-0 b6 9. b4 Bb7 10. Nb3 c5 11. bxc5 bxc5 12. Nbd2 Rc8 13. Bb2 cxd4 14. Nxd4 a6 15. Bd3 Ng4 16. h3 Nge5 17. f4 Nxd3 18. Qxd3 e5 19. Ne2 0-0 20. Rac1 Qc6 21. c4 Qb6+ 22. Kh2 Qxb2 23. Rb1 Qxa2 24. Rxb7 Nc5 25. Nc3 Nxd3 26. Nxa2 Bf6 27. fxe5 Bxe5+ 28. Kh1 Nc5 29. Rbb1 Ra8 30. Nb4 Bc3 31. Rfd1 a5 32. Nd5 Bxd2 33. Rxd2 Nxe4 34. Rd4 f5 35. Ne7+ Kh8 36. Nxf5 Rxf5 37. Rxe4 Rf6 38. Rb7 a4 39. Ree7 Rg6 40. Ra7 Rb8 41. Rxa4 h6 42. Ra6 Rb2 43. Re8+ Kh7 44. Rd8 Rbxg2 45. Ra1 Rc2 46. Rg1 Rxc4 47. Rxg6 Kxg6 48. Rxd6+ Kf5 49. Kg2 Kg5 50. Rd3 Kh4 51. Kh1 g5 52. Re3 h5 53. Kg2 Rc2+ 54. Kh1 g4 55. hxg4 hxg4 56. Kg1 g3 57. Rf3 Kh3 58. Rf1 Rg2+ 0-1

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Massengale, John"]
[Black "Choyke, Jack"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "65"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. e3 d5 6. Nbd2 Be7 7. Be2 0-0 8. 0-0 Nbd7 9. b4 c5 10. dxc5 bxc5 11. bxc5 Bxc5 12. Bb2 Qc7 13. cxd5 Bxd5 14. Ne1 Rab8 15. Bc3 Rfc8 16. Bxf6 Nxf6 17. Bf3 Qe7 18. Nc2 Rd8 19. Qe2 Bxf3 20. Nxf3 Rb2 21. Qc4 Rbb8 22. Nfd4 Rdc8 23. Qd3 Bxd4 24. Nxd4 Qd7 25. Qe2 e5 26. Nf3 Qe7 27. Ra2 Rc3 28. a4 Ra3 29. Rfa1 Rxa2 30. Qxa2 Nd7 31. h3 a5 32. Qd5 Qd8 33. Rd1 1-0

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Molenda, E."]
[Black "Choyke, Jack"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "42"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. b4 Nf6 2. Bb2 e6 3. a3 b6 4. e3 Bb7 5. Nf3 d5 6. c4 Nbd7 7. d4 c5 8. bxc5 bxc5 9. Nc3 cxd4 10. exd4 dxc4 11. Bxc4 Rc8 12. Bb5 a6 13. Ba4 Be7 14. Ne5 0-0 15. 0-0 Nxe5 16. dxe5 Qxd1 17. Rfxd1 Nd5 18. Nxd5 Bxd5 19. Rdc1 Rxc1+ 20. Rxc1 Rb8 21. h3 Rxb2 0-1

