[Event "Quebec op"]
[Site "Montreal"]
[Date "1981.08.08"]
[Round "7"]
[White "Costigan, Thomas J"]
[Black "Ivanov, Igor Vasilievich"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "2309"]
[BlackElo "2481"]
[PlyCount "78"]
[EventDate "1981.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. 0-0 Ngf6 6. Qe2 e6 7. d4 cxd4 8. Nxd4 Be7 9. c4 0-0 10. Nc3 a6 11. Kh1 Qc7 12. f4 Rfe8 13. g4 d5 14. e5 Ne4 15. cxd5 Nxc3 16. bxc3 exd5 17. Rf3 Nc5 18. Be3 Ne4 19. Rc1 Rac8 20. Nf5 Bc5 21. c4 Qc6 22. cxd5 Qxd5 23. Rd1 Qc6 24. Bxc5 Nc3 25. Qd3 Nxd1 26. Bd4 Qc1 27. Rf1 Nb2 28. Qf3 Qd2 29. Bxb2 Rc2 30. Qg3 Rxb2 31. g5 Rxa2 32. Nh6+ gxh6 33. gxh6+ Kf8 34. Qg7+ Ke7 35. Qf6+ Kd7 36. Qxf7+ Kd8 37. Qf6+ Kc8 38. Qf5+ Kb8 39. Qh3 Rg8 0-1

[Event "Quebec op"]
[Site "Montreal"]
[Date "1981.08.05"]
[Round "4"]
[White "Costigan, Thomas J"]
[Black "Timberlake, David"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2309"]
[BlackElo "2214"]
[PlyCount "65"]
[EventDate "1981.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 g6 3. Nc3 Bg7 4. Bc4 d5 5. exd5 b5 6. Bb3 b4 7. Na4 cxd5 8. Ne2 Nf6 9. a3 bxa3 10. Rxa3 0-0 11. 0-0 Nc6 12. c3 a5 13. Re1 Ra7 14. Nc5 Qb6 15. Nf4 Rd8 16. Qf3 Bg4 17. Qg3 Bf5 18. h4 h5 19. Nfd3 Ne4 20. Nxe4 dxe4 21. Nc5 e5 22. Na4 Qb8 23. d5 Bf8 24. Ra1 Qxb3 25. dxc6 Bd6 26. Be3 Ra6 27. c7 Rc8 28. Qg5 Rxc7 29. Rad1 Rac6 30. Qd8+ Bf8 31. Nb6 Rxb6 32. Qxc7 Qxb2 33. Qxb6 1-0

[Event "Northwest Chess June op"]
[Site "Seattle"]
[Date "1980.06.??"]
[Round "?"]
[White "Costigan, Thomas J"]
[Black "Braley, John"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "69"]
[EventDate "1980.06.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 d6 3. Bc4 c6 4. Nc3 e6 5. Qe2 b5 6. Bd3 Bg7 7. Nf3 Na6 8. a4 b4 9. Nb1 Qa5 10. Nbd2 d5 11. exd5 cxd5 12. Bb5+ Kf8 13. Nb3 Qb6 14. Bf4 Nc7 15. Bd3 a5 16. Ne5 Ne7 17. g4 f6 18. Nf3 g5 19. Be3 Kf7 20. h4 h6 21. Nfd2 Ba6 22. f4 Bxd3 23. Qxd3 Ng6 24. fxg5 hxg5 25. h5 Ne7 26. Rf1 Ke8 27. Nc5 Qc6 28. 0-0-0 e5 29. dxe5 fxe5 30. Bxg5 Qxc5 31. Bxe7 Kxe7 32. Qg6 Rag8 33. Rf7+ Kd8 34. Rxg7 Rf8 35. Ne4 1-0

[Event "US Junior-ch"]
[Site "Memphis"]
[Date "1978.06.24"]
[Round "7"]
[White "Costigan, Thomas J"]
[Black "Fedorowicz, John P"]
[Result "0-1"]
[ECO "B40"]
[BlackElo "2360"]
[PlyCount "68"]
[EventDate "1978.06.18"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. e5 d4 5. cxd4 cxd4 6. Bb5+ Bd7 7. Nxd4 Bxb5 8. Nxb5 a6 9. Qa4 Nc6 10. N5c3 Qg5 11. 0-0 Qxe5 12. Na3 Bd6 13. g3 Bxa3 14. d4 Qa5 15. Qxa5 Nxa5 16. bxa3 Nf6 17. Bg5 0-0 18. Rab1 Rfc8 19. Rfc1 Rc4 20. Ne2 Ne4 21. Be7 Rxc1+ 22. Rxc1 Nc6 23. Bb4 Rd8 24. f3 Nf6 25. Bc5 Nd5 26. Nc3 h6 27. Na4 b5 28. Nb2 Nde7 29. Kf2 Nf5 30. Bb6 Rd6 31. Bc7 Rxd4 32. Rxc6 Rd2+ 33. Kg1 Nd4 34. Nc4 Rd1+ 0-1

[Event "US Junior-ch"]
[Site "Memphis"]
[Date "1978.06.22"]
[Round "5"]
[White "Costigan, Thomas J"]
[Black "Rohde, Michael A"]
[Result "0-1"]
[ECO "B06"]
[BlackElo "2425"]
[PlyCount "80"]
[EventDate "1978.06.18"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Bc4 c5 4. dxc5 Qa5+ 5. c3 Qxc5 6. Qb3 e6 7. Na3 Nf6 8. Be3 Qc6 9. f3 0-0 10. Rd1 d5 11. exd5 exd5 12. Bxd5 Nxd5 13. Qxd5 Be6 14. Qxc6 Nxc6 15. Ra1 Rfe8 16. Ne2 Bf5 17. Kf2 Ne5 18. Nc1 a6 19. Bd4 b5 20. Bxe5 Bxe5 21. Ne2 Rac8 22. Rac1 Bd3 23. Rhe1 Bxh2 24. Nc2 Bc7 25. Ncd4 Bb6 26. Nf4 Bc4 27. b3 Be6 28. Nfxe6 Rxe6 29. Rxe6 fxe6 30. Re1 Rxc3 31. Rxe6 Bxd4+ 32. Ke2 Bc5 33. Rxa6 Rc2+ 34. Kd3 Rxg2 35. a4 b4 36. Rc6 Be7 37. a5 Ra2 38. a6 Kf7 39. Kc4 Ra5 40. Kd3 h5 0-1

[Event "US Junior-ch"]
[Site "Memphis"]
[Date "1978.06.20"]
[Round "3"]
[White "Costigan, Thomas J"]
[Black "Ginsburg, Mark"]
[Result "1/2-1/2"]
[ECO "B28"]
[PlyCount "120"]
[EventDate "1978.06.18"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c3 b5 4. a4 Bb7 5. axb5 axb5 6. Rxa8 Bxa8 7. Na3 b4 8. Nb5 Nf6 9. d4 Nxe4 10. dxc5 Nxc5 11. cxb4 Ne6 12. Ng5 Nxg5 13. Bxg5 f6 14. Bd3 g6 15. Qb1 Bd5 16. Be3 e5 17. 0-0 Nc6 18. Nc3 Bf7 19. b5 Nb4 20. b6 Be7 21. Bb5 0-0 22. Bh6 Re8 23. Rd1 Qxb6 24. Rxd7 Be6 25. Qd1 Rd8 26. Be3 Qb8 27. Ba7 Qa8 28. Bc5 Rxd7 29. Bxd7 Bxc5 30. Bxe6+ Kh8 31. h4 Bd4 32. Nb5 Qe4 33. h5 Nd3 34. Nxd4 Qxd4 35. Qf3 e4 36. Qg3 Qxb2 37. hxg6 hxg6 38. Qxg6 Qa1+ 39. Kh2 Qe5+ 40. g3 Qxe6 41. Qh6+ Kg8 42. Qg6+ Kf8 43. f3 Qa2+ 44. Kh3 Qe6+ 45. Kh2 Nf2 46. Kg2 e3 47. Kf1 Qa6+ 48. Kg2 Ke7 49. Qg7+ Ke6 50. Qg8+ Ke5 51. Qb8+ Kd4 52. Qb2+ Kd3 53. Qb3+ Kd2 54. Qb2+ Kd3 55. Qb3+ Kd2 56. Qb2+ Ke1 57. Qc3+ Kd1 58. Qb3+ Ke1 59. Qc3+ Kd1 60. Qb3+ Kd2 1/2-1/2

[Event "US Junior-ch"]
[Site "Memphis"]
[Date "1978.06.19"]
[Round "2"]
[White "Whitehead, Paul A"]
[Black "Costigan, Thomas J"]
[Result "1-0"]
[ECO "C17"]
[PlyCount "45"]
[EventDate "1978.06.18"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 cxd4 6. Nb5 Bxd2+ 7. Qxd2 Nc6 8. Nf3 Nge7 9. Nd6+ Kf8 10. Qf4 Nf5 11. Nxf5 exf5 12. Bd3 Qc7 13. 0-0 f6 14. Rfe1 g5 15. Qd2 h6 16. exf6 Qd6 17. Bb5 Bd7 18. Bxc6 bxc6 19. Re7 Be8 20. Rae1 Bf7 21. Qxd4 c5 22. Qe5 Rd8 23. Qxf5 1-0

[Event "US Junior-ch"]
[Site "Memphis"]
[Date "1978.06.18"]
[Round "1"]
[White "Costigan, Thomas J"]
[Black "Seirawan, Yasser"]
[Result "1/2-1/2"]
[ECO "B15"]
[BlackElo "2400"]
[PlyCount "56"]
[EventDate "1978.06.18"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. h3 Bg7 5. Nf3 dxe4 6. Nxe4 Nd7 7. Bc4 Ngf6 8. Nxf6+ Nxf6 9. 0-0 0-0 10. Re1 Bf5 11. Qe2 Be4 12. c3 b5 13. Bb3 e6 14. Ne5 Bd5 15. Bc2 Nd7 16. b3 Nb6 17. a4 c5 18. axb5 cxd4 19. c4 Bb7 20. Ba3 Re8 21. Be4 Bxe4 22. Bc5 Qc8 23. Bxb6 axb6 24. Ra4 d3 25. Rea1 f5 26. c5 f4 27. c6 d2 28. Rd1 g5 1/2-1/2

[Event "US Open-78"]
[Site "Columbus"]
[Date "1977.08.??"]
[Round "?"]
[White "Chess, R."]
[Black "Costigan, Thomas J"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "72"]
[EventDate "1977.08.07"]
[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 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5 5. Qf3 Qc5 6. c3 e5 7. Qe3 Be6 8. Nf3 Nd7 9. d4 Qb6 10. Nxe5 Nxe5 11. Qxe5 Bd6 12. Bb5+ c6 13. Qxd6 Qxb5 14. b3 Rd8 15. Qa3 Qd3 16. Be3 Qxc3+ 17. Ke2 Qc2+ 18. Kf1 f6 19. Re1 Kf7 20. Qxa7 Rd7 21. h3 Bd5 22. Kg1 Qg6 23. Rh2 Re8 24. Qa5 Rde7 25. Qd2 f5 26. Rf1 Qh5 27. Bf4 Qe2 28. Qxe2 Rxe2 29. Be5 Rxa2 30. Rb1 Rea8 31. Rh1 Rd2 32. b4 Raa2 33. Bg3 f4 34. Bxf4 Rxf2 35. Be3 Rxg2+ 36. Kf1 Bc4+ 0-1

[Event "US Open-78"]
[Site "Columbus"]
[Date "1977.08.??"]
[Round "?"]
[White "Costigan, Thomas J"]
[Black "Gutierrez, J."]
[Result "1-0"]
[ECO "B40"]
[PlyCount "63"]
[EventDate "1977.08.07"]
[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 e6 3. c3 Nf6 4. Bd3 Nc6 5. 0-0 d5 6. e5 Nd7 7. Re1 Qc7 8. Qe2 Be7 9. Bc2 0-0 10. d4 cxd4 11. cxd4 f6 12. Nc3 fxe5 13. dxe5 Rxf3 14. Qxf3 Nd4 15. Qg4 Nxc2 16. Qxe6+ Kf8 17. Qxe7+ Kxe7 18. Nxd5+ Kf8 19. Nxc7 Rb8 20. e6 Nf6 21. Bg5 Nxe1 22. Rxe1 Ne8 23. Nd5 b5 24. Bf4 Ra8 25. Re3 Bb7 26. Rf3 Kg8 27. Rd3 Kf8 28. Be5 Bxd5 29. Rxd5 Ke7 30. Rxb5 Kxe6 31. Rb8 Rxb8 32. Bxb8 1-0

[Event "US Open-78"]
[Site "Columbus"]
[Date "1977.08.??"]
[Round "?"]
[White "Costigan, Thomas J"]
[Black "Martz, William E"]
[Result "0-1"]
[ECO "B17"]
[PlyCount "74"]
[EventDate "1977.08.07"]
[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 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Ng5 e6 7. Qe2 Nb6 8. Bd3 h6 9. N5f3 c5 10. dxc5 Nbd7 11. b4 b6 12. Nd4 Nxc5 13. Bb5+ Ncd7 14. Bd2 Qc7 15. Ngf3 Be7 16. 0-0 a6 17. Bc4 0-0 18. Nxe6 fxe6 19. Bxe6+ Rf7 20. Rfe1 Nf8 21. Bf4 Qxf4 22. Bxf7+ Kxf7 23. Qxe7+ Kg8 24. Rad1 Ng6 25. Rd8+ Kh7 26. Qe3 Qxb4 27. c3 Qb5 28. Nd4 Qc4 29. Qg3 Ra7 30. h4 Rc7 31. Re3 Rc5 32. Qd6 Qxa2 33. Nf3 Ng4 34. Nd2 Nxe3 35. fxe3 Qa1+ 36. Kh2 Qxc3 37. Ne4 Qe5+ 0-1

[Event "US Open-78"]
[Site "Columbus"]
[Date "1977.08.??"]
[Round "?"]
[White "Lombardy, William James"]
[Black "Costigan, Thomas J"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2530"]
[PlyCount "115"]
[EventDate "1977.08.07"]
[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 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Bd7 8. Be2 Ba4 9. 0-0 c4 10. Ng5 h6 11. Nh3 Qa5 12. Bd2 Nd7 13. Nf4 0-0-0 14. g4 Qa6 15. Nh5 f5 16. exf6 gxf6 17. Bf4 e5 18. Bg3 Qa5 19. Qd2 Nc6 20. Rfd1 exd4 21. cxd4 Qxd2 22. Rxd2 c3 23. Rdd1 Rde8 24. Bd3 Nxd4 25. Bg6 Ne2+ 26. Kf1 Nxg3+ 27. hxg3 Bb5+ 28. Bd3 Bc6 29. Bf5 Rhf8 30. Rab1 Kb8 31. Ng7 Re5 32. Ne6 Re8 33. Nd4 Ba4 34. Rd3 Nc5 35. Rxc3 Ne4 36. Rd3 Nd6 37. Rb4 Nxf5 38. gxf5 Bd7 39. Rdb3 b6 40. a4 Re1+ 41. Kg2 Ra1 42. Rb1 Rxb1 43. Rxb1 Bxa4 44. Rh1 Re4 45. c3 b5 46. f3 Rxd4 47. cxd4 Bc2 48. Kf2 b4 49. Ke3 Bxf5 50. Kd2 a5 51. Ra1 Bd7 52. Rxa5 Bc6 53. Kc2 Kc7 54. Kb3 Kd6 55. Kxb4 Be8 56. Ra6+ Ke7 57. Kc5 Bh5 58. g4 1-0

[Event "Quebec op"]
[Site "Montreal"]
[Date "1977.07.12"]
[Round "3"]
[White "Zalys, Ignas"]
[Black "Costigan, Thomas J"]
[Result "0-1"]
[ECO "C19"]
[PlyCount "70"]
[EventDate "1977.07.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Bd7 8. Bd3 c4 9. Bf1 Ba4 10. g3 Qa5 11. Bd2 Nd7 12. Bh3 0-0-0 13. 0-0 Rdf8 14. Ne1 h5 15. f4 h4 16. g4 f5 17. exf6 gxf6 18. Nf3 Qa6 19. Re1 Re8 20. Re2 Qd6 21. Be3 Ng6 22. Qd2 e5 23. fxe5 fxe5 24. dxe5 Ndxe5 25. Nd4 Bd7 26. Rg2 Rhf8 27. Qd1 Nf3+ 28. Nxf3 Rxe3 29. Rf2 Qf4 30. Bg2 h3 31. Bh1 Nh4 32. Qxd5 Nxf3+ 33. Bxf3 Rxf3 34. Rxf3 Qxf3 35. Qxc4+ Kb8 0-1

[Event "USA Junior-ch"]
[Site "Denver"]
[Date "1977.??.??"]
[Round "5"]
[White "Costigan, Richard"]
[Black "Costigan, Thomas J"]
[Result "1/2-1/2"]
[ECO "A30"]
[PlyCount "50"]
[EventDate "1977.08.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 Nf6 4. 0-0 g6 5. c4 c5 6. Nc3 Bg7 7. d3 0-0 8. e4 d6 9. Qe2 Nc6 10. Bg5 h6 11. Be3 Nd7 12. Rfd1 e5 13. Nd5 Rb8 14. a3 Nd4 15. Nxd4 cxd4 16. Bd2 b5 17. Bb4 Nc5 18. Bxc5 dxc5 19. b3 Bxd5 20. cxd5 Qd6 21. Rdc1 Rfc8 22. Rc2 Rc7 23. Rac1 Rbc8 24. Qd2 Bf8 25. Qa5 Qb6 1/2-1/2

[Event "USA Junior-ch"]
[Site "Denver"]
[Date "1977.??.??"]
[Round "6"]
[White "Costigan, Thomas J"]
[Black "McCambridge, Vincent"]
[Result "0-1"]
[ECO "B51"]
[PlyCount "100"]
[EventDate "1977.08.27"]
[EventType "tourn"]
[EventRounds "9"]
[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. Bb5+ Nc6 4. 0-0 Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. h3 Bh5 9. a4 e6 10. d3 Be7 11. Nbd2 0-0 12. Qb3 Qc7 13. Nh2 d5 14. g3 Bg6 15. Bg2 Ne5 16. Qc2 dxe4 17. Nxe4 c4 18. dxc4 Qxc4 19. Bf1 Bxe4 20. Bxc4 Bxc2 21. Rxe5 Ne4 22. Be3 Bf6 23. Ra5 Rac8 24. Rc1 Rxc4 25. Rxc2 Bd8 26. Re5 Bc7 27. Rh5 Rxa4 28. Bd4 Rd8 29. Re2 f5 30. Kg2 g6 31. Rh6 e5 32. Be3 Rd1 33. f3 Nf6 34. Bg5 Kg7 35. Rh4 Raa1 36. Be3 Nd5 37. Bf2 b5 38. c4 g5 39. Rh5 Kg6 40. cxd5 Kxh5 41. Rc2 Bd6 42. g4+ fxg4 43. Nxg4 Kg6 44. Rc8 Rxd5 45. Rg8+ Kf7 46. Rxg5 Rd2 47. Kg3 Rxb2 48. Rf5+ Ke6 49. Rf6+ Ke7 50. Be3 h5 0-1

[Event "USA Junior-ch"]
[Site "Denver"]
[Date "1977.??.??"]
[Round "4"]
[White "Costigan, Thomas J"]
[Black "Regan, Kenneth"]
[Result "1-0"]
[ECO "B29"]
[BlackElo "2375"]
[PlyCount "67"]
[EventDate "1977.08.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. g3 d6 5. Bg2 Bg4 6. h3 Bh5 7. d4 e6 8. c4 Nb6 9. exd6 Bxd6 10. dxc5 Bxc5 11. Qxd8+ Kxd8 12. Ne5 Nc6 13. Nxc6+ bxc6 14. Nd2 Kc7 15. 0-0 Be7 16. Re1 Rhd8 17. Nb3 g5 18. Na5 Bb4 19. Bxg5 Bxe1 20. Bf4+ Kc8 21. Rxe1 a6 22. Nxc6 Rh8 23. Na5 Ra7 24. Re5 Bd1 25. Rc5+ Kd7 26. Rc6 Nc8 27. Bb8 Ba4 28. Bxa7 Bxc6 29. Bxc6+ Kd6 30. Bb8+ Kc5 31. Be5 Rg8 32. a3 Kb6 33. b4 Na7 34. Bd4+ 1-0

[Event "USA Junior-ch"]
[Site "Denver"]
[Date "1977.??.??"]
[Round "2"]
[White "Costigan, Thomas J"]
[Black "Tisdall, Jonathan D"]
[Result "1-0"]
[ECO "B30"]
[BlackElo "2375"]
[PlyCount "79"]
[EventDate "1977.08.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. 0-0 Nge7 5. Nc3 a6 6. Bxc6 Nxc6 7. d4 cxd4 8. Nxd4 d6 9. Nxc6 bxc6 10. Qg4 h5 11. Qe2 Be7 12. e5 d5 13. Bf4 Rb8 14. b3 Rb4 15. Qf3 a5 16. Rfd1 Qc7 17. a3 Rb7 18. Qg3 Kf8 19. Rd3 c5 20. Rad1 h4 21. Qg4 c4 22. bxc4 Qxc4 23. Ne2 Bd7 24. Nd4 Ba4 25. Qf3 Bd7 26. h3 g6 27. Qe3 Rh5 28. Rc3 Qa4 29. Nf3 Qe4 30. Qc1 Rf5 31. Rd4 Qe2 32. Be3 Rh5 33. Rdd3 Rh8 34. Nd4 Qh5 35. Nb3 Kg7 36. Nxa5 Rb5 37. Rc7 Rxa5 38. Rxd7 Re8 39. Rb3 Ra4 40. Rbb7 1-0

[Event "USA Junior-ch"]
[Site "Denver"]
[Date "1977.??.??"]
[Round "1"]
[White "Fedorowicz, John P"]
[Black "Costigan, Thomas J"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2440"]
[PlyCount "55"]
[EventDate "1977.08.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Ne4 5. Bd3 Nxd2 6. Bxd2 c5 7. dxc5 Nc6 8. Nf3 Bxc5 9. 0-0 Bd7 10. c3 Qc7 11. b4 Be7 12. Re1 h6 13. Rc1 0-0 14. Bb1 f5 15. exf6 Rxf6 16. c4 dxc4 17. Rxc4 b5 18. Rc1 e5 19. Qb3+ Be6 20. Qd3 Bc4 21. Rxc4 bxc4 22. Qxc4+ Kh8 23. b5 Qd8 24. Qc2 Kg8 25. bxc6 Bd6 26. Be3 Qc7 27. Nd2 e4 28. Qc4+ 1-0

[Event "USA Junior-ch"]
[Site "Denver"]
[Date "1977.??.??"]
[Round "7"]
[White "Whitehead, Jay E"]
[Black "Costigan, Thomas J"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "76"]
[EventDate "1977.08.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 b6 4. c3 Qd7 5. g3 Ne7 6. Bg2 Ba6 7. d3 Qb5 8. c4 dxc4 9. dxc4 Qd7 10. Qc2 Nbc6 11. 0-0 0-0-0 12. Na3 Nb4 13. Qb3 Nec6 14. Bg5 Na5 15. Qc3 Be7 16. Bxe7 Qxe7 17. Nd4 Qc5 18. Nab5 Bxb5 19. Nxb5 Rd3 20. Qe1 a6 21. Qe4 axb5 22. Qa8+ Kd7 23. Qxh8 Nxc4 24. Qxg7 Nxe5 25. Rae1 Nf3+ 26. Bxf3 Rxf3 27. Qxh7 Nd3 28. Rd1 Qd4 29. Rd2 c5 30. Qg8 c4 31. Qb8 Kc6 32. b3 e5 33. bxc4 bxc4 34. Qc8+ Kd6 35. Rb1 Qc5 36. Qd8+ Ke6 37. Rxb6+ Kf5 38. Rf6+ Ke4 1-0

[Event "USA Junior-ch"]
[Site "Denver"]
[Date "1977.??.??"]
[Round "3"]
[White "Whitehead, Paul A"]
[Black "Costigan, Thomas J"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "68"]
[EventDate "1977.08.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 c5 5. Bg2 Nc6 6. Ngf3 Be7 7. 0-0 0-0 8. Re1 Qc7 9. Qe2 dxe4 10. dxe4 e5 11. c3 Bg4 12. h3 Bh5 13. g4 Bg6 14. Nh4 Rfd8 15. Nf5 Bf8 16. Nf1 Ne8 17. N5e3 Rab8 18. Nd5 Qa5 19. f4 Nc7 20. Nfe3 Nxd5 21. exd5 exf4 22. Nc4 Qa6 23. dxc6 Bd3 24. Qf2 Qxc4 25. c7 Bd6 26. cxd8Q+ Rxd8 27. Bd2 g5 28. b3 Qa6 29. c4 b5 30. cxb5 Qxb5 31. Bc3 c4 32. Kh1 Bc5 33. Re5 Bxf2 34. Rxb5 h6 1-0

