[Event "corr"]
[Site "corr"]
[Date "1997.??.??"]
[Round "?"]
[White "Ahlstrom, S."]
[Black "Davies, Nigel Rodney"]
[Result "1-0"]
[ECO "A91"]
[BlackElo "2525"]
[PlyCount "79"]
[EventDate "1997.06.04"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 f5 3. g3 Nf6 4. Bg2 Be7 5. e3 0-0 6. Nge2 c6 7. d4 d5 8. b3 Ne4 9. 0-0 Nd7 10. Bb2 Ndf6 11. Qc2 g5 12. Na4 Bd7 13. Nc5 b6 14. Nd3 Qe8 15. Ne5 Rc8 16. Nc1 c5 17. Ncd3 cxd4 18. exd4 Rc7 19. f3 Nd6 20. c5 Bb5 21. Qd2 bxc5 22. Nxc5 Bd8 23. Rfe1 Rg7 24. a4 g4 25. axb5 gxf3 26. Bxf3 Nfe4 27. Nxe4 fxe4 28. Bg2 Nxb5 29. Rf1 Rf5 30. Rxf5 exf5 31. Rf1 Bg5 32. Qf2 f4 33. gxf4 Bf6 34. Qe2 a6 35. Kh1 Kh8 36. Rc1 Rc7 37. Rxc7 Nxc7 38. Bh3 Nb5 39. Qg4 h5 40. Qe2 1-0

[Event "corr"]
[Site "corr"]
[Date "1997.??.??"]
[Round "?"]
[White "Ahlstrom, S."]
[Black "Marfia, Jim"]
[Result "1-0"]
[ECO "A34"]
[PlyCount "65"]
[EventDate "1997.06.04"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nb4 6. Bc4 Be6 7. Bxe6 Nd3+ 8. Kf1 fxe6 9. Ng5 Qd7 10. Qf3 Ne5 11. Qh3 Nbc6 12. Nxe6 c4 13. Nd5 Rc8 14. f4 Nd3 15. b3 cxb3 16. Qxd3 Qxe6 17. axb3 Qf7 18. g3 e6 19. Nc3 Bc5 20. Ba3 Bxa3 21. Rxa3 0-0 22. Kg2 Rfd8 23. Qe3 a6 24. e5 Nd4 25. Ra2 Qc7 26. Rb1 Qc6+ 27. Kf2 Nb5 28. Rc1 Nd4 29. Ne2 Qxc1 30. Nxc1 Rxc1 31. g4 Rb1 32. Ra4 Nxb3 33. Qb6 1-0

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "3"]
[White "Ahlstrom, S."]
[Black "Chachere, Lawrence"]
[Result "0-1"]
[ECO "A88"]
[BlackElo "2280"]
[PlyCount "78"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. d4 d6 7. d5 c6 8. Nc3 Qa5 9. a3 Qa6 10. Qb3 cxd5 11. cxd5 Nbd7 12. Be3 Nb6 13. Bd4 Bd7 14. Nd2 Rac8 15. e3 Na4 16. Rfb1 Nxc3 17. bxc3 b6 18. a4 Qe2 19. Bf3 Qd3 20. Qd1 Ne4 21. Nxe4 fxe4 22. Qxd3 exd3 23. Be4 Bxd4 24. cxd4 Rc2 25. f3 Bf5 26. Bxf5 Rxf5 27. f4 Rxd5 28. Rd1 d2 29. Kf1 Ra5 30. Ke2 Rc4 31. Rxd2 Rcxa4 32. Rxa4 Rxa4 33. Rc2 Kf7 34. g4 h6 35. h4 h5 36. gxh5 gxh5 37. Kd3 Ra3+ 38. Ke4 Ke6 39. f5+ Kf6 0-1

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "1"]
[White "Ahlstrom, S."]
[Black "Taylor, Timothy"]
[Result "0-1"]
[ECO "B38"]
[BlackElo "2455"]
[PlyCount "78"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 c5 4. Nf3 Nc6 5. d4 cxd4 6. Nxd4 Bg7 7. Be3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Rc1 Nxd4 11. Bxd4 Bc6 12. Qd3 a5 13. Rfd1 Nd7 14. Nd5 Nc5 15. Qe3 Bxd4 16. Rxd4 e5 17. Rd2 Ne6 18. Bf1 Nd4 19. Rcd1 Bxd5 20. cxd5 Rc8 21. Rd3 Rc2 22. R1d2 Rxd2 23. Qxd2 b6 24. b4 f5 25. exf5 Rxf5 26. bxa5 bxa5 27. Ra3 Qb6 28. Rxa5 Ne2+ 29. Qxe2 Qxa5 30. g3 Qxd5 31. a4 Qc5 32. Qa2+ Kg7 33. a5 Rf7 34. a6 d5 35. Bh3 Qc4 36. Qxc4 dxc4 37. Kf1 c3 38. Ke2 Ra7 39. Bc8 c2 0-1

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "4"]
[White "Rogan, Marvin"]
[Black "Ahlstrom, S."]
[Result "1-0"]
[ECO "C14"]
[PlyCount "113"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 a6 7. Bxe7 Qxe7 8. f4 c5 9. Nf3 Nc6 10. Be2 f6 11. exf6 Qxf6 12. dxc5 Qxf4 13. 0-0 0-0 14. Ng5 Qe3+ 15. Kh2 Rxf1 16. Qxf1 Nf6 17. Bf3 Qxc5 18. Re1 Bd7 19. Qd3 Qd4 20. Qxd4 Nxd4 21. Bd1 Rc8 22. Nf3 Nxf3+ 23. Bxf3 Rc5 24. Kg3 d4 25. Nd1 b6 26. c3 Kf7 27. b3 Rc7 28. cxd4 Bc6 29. Ne3 Bxf3 30. Kxf3 Rc3 31. Ke2 Kg6 32. Rd1 Kh5 33. g3 Nd5 34. Rd3 Rxd3 35. Kxd3 Nb4+ 36. Ke4 Nxa2 37. Ke5 Nc1 38. Kxe6 Nxb3 39. d5 a5 40. d6 a4 41. Nc2 Kg4 42. Kf7 Nc5 43. Kxg7 h5 44. Kg6 b5 45. Kh6 Nd7 46. Kg6 Ne5+ 47. Kf6 Nc6 48. Kg6 b4 49. Kh6 b3 50. Na3 Ne5 51. Kg7 Kxg3 52. Kf6 Kf4 53. Ke6 b2 54. Nb1 Ke4 55. Na3 Nd3 56. Kf6 Kf4 57. d7 1-0

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "2"]
[White "Trammell, George"]
[Black "Ahlstrom, S."]
[Result "1-0"]
[ECO "B20"]
[PlyCount "65"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bc4 a6 5. a4 Nf6 6. 0-0 d5 7. exd5 exd5 8. Re1+ Be7 9. Bf1 Bg4 10. h3 Bh5 11. g4 Bg6 12. d4 0-0 13. Bg5 c4 14. Ne5 Ne4 15. Bxe7 Nxe7 16. Nxg6 Nxg6 17. Nxe4 dxe4 18. Rxe4 Rc8 19. d5 f5 20. Rxc4 Rxc4 21. Bxc4 Qh4 22. d6+ Kh8 23. Ra3 fxg4 24. Qd4 Nf4 25. Bf1 gxh3 26. Kh2 Qd8 27. Rg3 Ne6 28. Qd2 Qf6 29. Bxh3 Qxf2+ 30. Qxf2 Rxf2+ 31. Kg1 Rf6 32. Bxe6 Rxe6 33. d7 1-0

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "4"]
[White "Ahlstrom, S."]
[Black "Pelts, Peter"]
[Result "0-1"]
[ECO "E95"]
[BlackElo "2295"]
[PlyCount "116"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. d4 Nbd7 5. e4 g6 6. Be2 exd4 7. Nxd4 Bg7 8. 0-0 0-0 9. Re1 Re8 10. Bf1 Nc5 11. f3 a5 12. Ndb5 Bd7 13. Be3 Ne6 14. Qd2 Bc6 15. Rad1 Nd7 16. Qf2 Bxb5 17. Nxb5 f5 18. exf5 gxf5 19. Nd4 Nxd4 20. Bxd4 Qg5 21. Bxg7 Kxg7 22. Qd4+ Qf6 23. Qxf6+ Kxf6 24. Kf2 Nc5 25. Bd3 Re5 26. Bc2 Rae8 27. Rxe5 dxe5 28. g3 b6 29. Rd5 Re7 30. f4 e4 31. Ke3 Rg7 32. Rd8 Ne6 33. Rd2 h5 34. Rg2 h4 35. g4 fxg4 36. Bxe4 g3 37. hxg3 h3 38. Rg1 h2 39. Rh1 Rxg3+ 40. Kf2 Rh3 41. Bg2 Rh4 42. Kg3 Rxf4 43. Bd5 Rf5 44. Rxh2 Nd4 45. Rd2 Ke5 46. Rd3 b5 47. Re3+ Kd6 48. Rd3 Kc5 49. Be4 Ne2+ 50. Kh2 Rh5+ 51. Rh3 Rxh3+ 52. Kxh3 bxc4 53. Kg2 Kd4 54. Kf2 Nc3 55. bxc3+ Kxe4 56. Ke2 a4 57. Kd2 Kf3 58. Kc2 Ke2 0-1

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "3"]
[White "Ahlstrom, S."]
[Black "Zelkind, Eduard"]
[Result "1-0"]
[ECO "E77"]
[PlyCount "65"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 d6 4. e4 Bg7 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. exd5 Re8 10. 0-0 Ng4 11. Bd3 Nh6 12. Ng5 Bf5 13. Kh1 Nd7 14. Qf3 a6 15. a4 Nf6 16. Bd2 Bxd3 17. Qxd3 Nf5 18. Rae1 Qb6 19. Nd1 h6 20. Nf3 Ng4 21. a5 Qc7 22. Bc3 Nf6 23. Nf2 h5 24. Ng5 Nd4 25. Bxd4 cxd4 26. f5 gxf5 27. Qxf5 Qxa5 28. Nfe4 Qd8 29. Nxf6+ Qxf6 30. Qh7+ Kf8 31. Ne6+ fxe6 32. Rxf6+ Bxf6 33. Rf1 1-0

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "1"]
[White "Giles, Morris"]
[Black "Ahlstrom, S."]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2355"]
[PlyCount "47"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[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. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 Nf6 7. 0-0 e5 8. c4 Bc5 9. Nc3 d6 10. Bg5 h6 11. Bxf6 Qxf6 12. b4 Bd4 13. Rc1 0-0 14. Qa4 Bd7 15. Ne2 Bb6 16. c5 Bc7 17. Ba6 dxc5 18. bxc5 Rab8 19. Bc4 Rb7 20. Rfd1 Rd8 21. Bb3 Bc8 22. Rxd8+ Bxd8 23. Rd1 Be7 24. Qa5 1/2-1/2

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "5"]
[White "Schiller, Eric Andrew"]
[Black "Ahlstrom, S."]
[Result "1/2-1/2"]
[ECO "B44"]
[WhiteElo "2270"]
[PlyCount "135"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[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. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Be7 9. Be2 0-0 10. 0-0 b6 11. f3 Bb7 12. Be3 Ne5 13. Qd4 Ned7 14. Rad1 Qc7 15. g4 h6 16. h4 d5 17. f4 Bc5 18. Qd2 Nxe4 19. Nxe4 dxe4 20. b4 Bxe3+ 21. Qxe3 Rfd8 22. g5 hxg5 23. hxg5 Nf8 24. c5 Rxd1 25. Rxd1 bxc5 26. bxc5 Ng6 27. Rf1 Nh4 28. Nc4 Nf5 29. Qf2 Rd8 30. Rc1 e3 31. Nxe3 Qc6 32. Ng2 Nh4 33. Rb1 Qxg2+ 34. Qxg2 Bxg2 35. Bxa6 Be4 36. Rb4 Bc6 37. Rb6 Nf3+ 38. Kf2 Nd4 39. Bd3 Kf8 40. Ke3 f6 41. Rb4 e5 42. gxf6 gxf6 43. fxe5 fxe5 44. a4 Ra8 45. Bb1 Ke7 46. Bd3 Rxa4 47. Rxa4 Bxa4 48. Ke4 Kf6 49. Kd5 Bb3+ 50. Kd6 Bc2 51. Bf1 e4 52. Kd5 Ne6 53. c6 Bd3 54. Bg2 e3 55. Bf3 Kf5 56. Bd1 Be4+ 57. Kd6 Kf6 58. c7 Nxc7 59. Kxc7 Ke5 60. Be2 Kd4 61. Kd6 Bd3 62. Bf3 Bf5 63. Be2 Bc2 64. Bg4 Bf5 65. Be2 Kc3 66. Ke5 Kd2 67. Bh5 Bc2 68. Kd4 1/2-1/2

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "2"]
[White "Wygle, Steve"]
[Black "Ahlstrom, S."]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "34"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[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 d5 4. exd5 exd5 5. d4 Nc6 6. Be2 Bd6 7. dxc5 Bxc5 8. 0-0 Nge7 9. Nbd2 0-0 10. Nb3 Bb6 11. Re1 Qd6 12. Bg5 f6 13. Be3 Bxe3 14. fxe3 Bf5 15. Bd3 Bxd3 16. Qxd3 Rad8 17. e4 dxe4 1/2-1/2

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1988.??.??"]
[Round "1"]
[White "Ahlstrom, S."]
[Black "Fischvogt, Eric V"]
[Result "1/2-1/2"]
[ECO "D91"]
[PlyCount "117"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. d4 Bg7 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 c6 8. Qb3 0-0 9. Rd1 e6 10. dxc6 Nxc6 11. Nf3 Nxd4 12. Nxd4 Bxd4 13. e3 Bxc3+ 14. Qxc3 Qe7 15. Be2 Bd7 16. 0-0 Rac8 17. Qd4 Bc6 18. Qxa7 Qg5 19. f3 Ra8 20. Qb6 Rxa2 21. Ra1 Rfa8 22. Rxa2 Rxa2 23. Rd1 Qe5 24. Rd2 Kg7 25. Qd4 Qxd4 26. exd4 Bd5 27. Kf2 g5 28. Ke3 Kf6 29. Bd3 h5 30. Be4 Ra1 31. Bxd5 exd5 32. Kd3 Kf5 33. g3 h4 34. Ke3 Re1+ 35. Kf2 Rh1 36. Kg2 Rc1 37. Kf2 b5 38. Ke3 Re1+ 39. Re2 Rxe2+ 40. Kxe2 hxg3 41. hxg3 g4 42. Ke3 gxf3 43. Kxf3 Kg5 44. g4 b4 45. Kg3 b3 46. Kf3 f5 47. gxf5 Kxf5 48. Ke3 Kg4 49. Ke2 Kf4 50. Kd3 Kf3 51. Kd2 Ke4 52. Kc3 Ke3 53. Kxb3 Kd3 54. Ka3 Kxd4 55. b4 Kc4 56. b5 Kxb5 57. Kb3 Kc6 58. Kc2 Kb5 59. Kd3 1/2-1/2

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1988.??.??"]
[Round "5"]
[White "Ahlstrom, S."]
[Black "Mills, James A"]
[Result "0-1"]
[ECO "E77"]
[BlackElo "2210"]
[PlyCount "74"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 b5 9. cxb5 exd5 10. exd5 a6 11. 0-0 Re8 12. a4 axb5 13. Bxb5 Bd7 14. Ra3 Ne4 15. Nxe4 Rxe4 16. f5 gxf5 17. Ng5 Rg4 18. Nxf7 Qf6 19. Nh6+ Bxh6 20. Qxg4+ fxg4 21. Rxf6 Bxc1 22. Rb3 c4 23. Bxc4 Bxa4 24. Rb7 Be3+ 25. Kf1 Nd7 26. Rxd6 Ne5 27. Bb5 Rf8+ 28. Ke1 Bf2+ 29. Ke2 Bc5 30. Re6 Rf2+ 31. Ke1 Bxb5 32. Rxb5 Nd3+ 33. Kd1 Nxb2+ 34. Kc1 Nd3+ 35. Kd1 Nb2+ 36. Kc1 Nd3+ 37. Kd1 Rxg2 0-1

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1988.??.??"]
[Round "3"]
[White "Ahlstrom, S."]
[Black "Wilson, Russell"]
[Result "1-0"]
[ECO "A31"]
[PlyCount "131"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 b6 4. e4 d6 5. d4 cxd4 6. Nxd4 Bb7 7. f3 e6 8. Be2 Be7 9. 0-0 a6 10. Be3 Nbd7 11. a4 Rc8 12. a5 bxa5 13. Nb3 a4 14. Nxa4 0-0 15. Qd2 Re8 16. Rfd1 Qc7 17. Na5 d5 18. exd5 exd5 19. Bf4 Bc5+ 20. Kh1 Rxe2 21. Bxc7 Rxd2 22. Rxd2 Rxc7 23. Nxb7 Rxb7 24. cxd5 Bb4 25. Rd4 Bd6 26. Rc1 g6 27. g3 Kg7 28. f4 a5 29. Kg2 Rb4 30. Rxb4 Bxb4 31. Rd1 Ne8 32. Kf3 Nd6 33. g4 h6 34. h3 g5 35. Ke3 Nf8 36. f5 Nd7 37. Kd4 Kf6 38. Rd3 h5 39. Re3 h4 40. Re2 Nb5+ 41. Kc4 Nc7 42. Kd4 Bd6 43. Nc3 Kg7 44. Ne4 Be5+ 45. Kc4 Bf4 46. d6 Ne5+ 47. Kc5 Ne8 48. Kb5 f6 49. Kxa5 Nc4+ 50. Kb5 Nexd6+ 51. Nxd6 Nxd6+ 52. Kc6 Kf7 53. b4 Nc4 54. b5 Ne5+ 55. Kd5 Nf3 56. Ra2 Ng1 57. Ra7+ Kf8 58. Ke6 Be5 59. Ra8+ Kg7 60. Ra7+ Kf8 61. Ra3 Ne2 62. b6 Nf4+ 63. Kd7 Kf7 64. b7 Nd5 65. Ra5 Nb6+ 66. Kc6 1-0

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1988.??.??"]
[Round "2"]
[White "Blankenau, Mike P"]
[Black "Ahlstrom, S."]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2305"]
[BlackElo "2140"]
[PlyCount "37"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. 0-0 Bd6 11. Nf3 Qc7 12. Bg5 0-0 13. Rc1 a6 14. Bb1 Bd7 15. Qd3 Be8 16. Qe3 Kh8 17. Nf4 Ng4 18. Qd3 g6 19. Nxe6 1-0

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1988.??.??"]
[Round "6"]
[White "Rolletschek, Heinrich"]
[Black "Ahlstrom, S."]
[Result "1-0"]
[ECO "C00"]
[PlyCount "43"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 c5 5. g3 Nc6 6. Bg2 Be7 7. 0-0 Qc7 8. Re1 b6 9. Nf1 d4 10. c3 e5 11. Nh4 g6 12. f4 Nh5 13. Nf5 Bf6 14. Nh6 Bg7 15. f5 Bxh6 16. Bxh6 f6 17. Qf3 Qf7 18. g4 Ng7 19. h4 Bd7 20. Ng3 Ke7 21. Rf1 Kd6 22. fxg6 1-0

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1988.??.??"]
[Round "4"]
[White "Umezinwa, George"]
[Black "Ahlstrom, S."]
[Result "1/2-1/2"]
[ECO "D40"]
[PlyCount "52"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c5 4. e3 Nf6 5. Nc3 a6 6. a4 Nc6 7. Be2 Be7 8. 0-0 0-0 9. b3 Ne4 10. Bb2 Bf6 11. Nxe4 dxe4 12. Nd2 cxd4 13. Nxe4 e5 14. Nxf6+ Qxf6 15. f4 dxe3 16. fxe5 Qg5 17. Rf3 Nxe5 18. Rg3 Qf4 19. Kh1 Qe4 20. Bd3 Qxd3 21. Rxg7+ Kh8 22. Qxd3 Nxd3 23. Rxf7+ Kg8 24. Rg7+ Kh8 25. Rf7+ Kg8 26. Rg7+ Kh8 1/2-1/2

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1986.??.??"]
[Round "1"]
[White "Ahlstrom, S."]
[Black "Lindsay, Fred P"]
[Result "0-1"]
[ECO "A34"]
[BlackElo "2250"]
[PlyCount "72"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 c5 3. Nc3 Nf6 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. 0-0 Be7 8. d4 Nxc3 9. bxc3 0-0 10. Bf4 Qa5 11. Qb3 Qa6 12. Rab1 Qxe2 13. Ne5 Nxe5 14. Bxe5 cxd4 15. cxd4 a5 16. Rfe1 Qd2 17. Red1 Qe2 18. Bf3 a4 19. Qc3 Qa6 20. d5 f6 21. d6 Bd8 22. Bf4 Rf7 23. d7 Bxd7 24. Bxb7 Qa5 25. Qd3 Ra7 26. Be3 g6 27. Bxa7 Qxa7 28. Bf3 Bb6 29. Rb2 Kg7 30. Rdb1 Bc7 31. Rb7 Qc5 32. Kg2 Bc8 33. R7b5 Qe7 34. Rc1 Ba6 35. Qb1 Bxb5 36. Qxb5 a3 0-1

[Event "Philadelphia op"]
[Site "Philadelphia"]
[Date "1986.??.??"]
[Round "?"]
[White "Ahlstrom, S."]
[Black "O'Donnell, Robert"]
[Result "0-1"]
[ECO "D47"]
[PlyCount "62"]
[EventDate "1986.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 Nf6 3. Nc3 d5 4. d4 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. 0-0 b4 10. Ne2 Be7 11. Ng3 0-0 12. Qe2 c5 13. Rd1 Qb6 14. Ne5 Nxe5 15. dxe5 Nd7 16. f4 Rfd8 17. b3 a5 18. Bb2 a4 19. Rac1 Qc7 20. Nh5 axb3 21. axb3 Bd5 22. Nf6+ Nxf6 23. exf6 Bxf6 24. Bxf6 gxf6 25. Qg4+ Kf8 26. Bxh7 Ra2 27. e4 Bxb3 28. Qg8+ Ke7 29. Qxd8+ Qxd8 30. Rxd8 Kxd8 31. Rxc5 Bc2 0-1

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1986.??.??"]
[Round "3"]
[White "Bereolos, Peter"]
[Black "Ahlstrom, S."]
[Result "1/2-1/2"]
[ECO "A68"]
[PlyCount "66"]
[EventDate "1986.??.??"]
[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Bd3 exd5 9. cxd5 Re8 10. 0-0 c4 11. Bc2 Bg4 12. h3 Bxf3 13. Qxf3 b5 14. a3 Nbd7 15. Be3 a6 16. Rae1 Qc7 17. Qf2 Rab8 18. Bd4 b4 19. axb4 Rxb4 20. e5 dxe5 21. fxe5 Nxe5 22. d6 Qxd6 23. Bc5 Qb8 24. Bxb4 Qxb4 25. Ba4 Re7 26. Qd4 Nfd7 27. Qd5 Qb8 28. Ne4 Nb6 29. Qc5 Rd7 30. Qa5 Nxa4 31. Qxa4 f5 32. Nc3 Re7 33. Kh1 Rb7 1/2-1/2

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1986.??.??"]
[Round "2"]
[White "Shtern, Igor"]
[Black "Ahlstrom, S."]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2295"]
[PlyCount "85"]
[EventDate "1986.??.??"]
[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. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. 0-0 0-0 9. Bg5 cxd4 10. Nxd4 Bg4 11. Rc1 h6 12. Be3 Qd7 13. Re1 Ne5 14. Qb3 Bh3 15. Bh1 Rad8 16. Bf4 Ng6 17. Be3 Ne5 18. Red1 Rfe8 19. Ndb5 Be6 20. Bd4 Nc6 21. Bxf6 Bxf6 22. Nxd5 Bxd5 23. Rxd5 Qe7 24. e3 a6 25. Nc3 Nb4 26. Rxd8 Rxd8 27. Nd5 Nxd5 28. Bxd5 Rd7 29. Rc8+ Kh7 30. e4 Bd4 31. Qc2 g6 32. Kg2 h5 33. b3 h4 34. Rc4 Bb6 35. Qc3 Bc7 36. Qf3 b5 37. Rc6 Be5 38. Rxa6 b4 39. Qg4 Rc7 40. Qxh4+ Qxh4 41. gxh4 Bd4 42. Bc4 Ra7 43. Rxa7 1-0

[Event "Midwest Masters op"]
[Site "Chicago"]
[Date "1986.??.??"]
[Round "5"]
[White "Zelkind, Mike"]
[Black "Ahlstrom, S."]
[Result "0-1"]
[ECO "B45"]
[PlyCount "66"]
[EventDate "1986.??.??"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 exd5 10. Bd3 d4 11. Ne2 h6 12. 0-0 0-0 13. Nf4 Bg4 14. f3 Bd7 15. Qe1 Ne7 16. Qf2 Bf5 17. Bxf5 Nxf5 18. g4 Ne7 19. Rd1 Nc6 20. c3 g5 21. Ng2 d3 22. Ne3 Re8 23. Qd2 Ne5 24. Rf1 Qb6 25. Kg2 Rad8 26. Rf2 Qc6 27. h3 Nxf3 28. Rxf3 Ne4 29. Qd1 d2 30. Kg1 Nxc3 31. bxc3 dxc1Q 32. Qxc1 Qxf3 33. Nf5 Qxh3 0-1

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "3"]
[White "Ahlstrom, S."]
[Black "Chow, Albert"]
[Result "0-1"]
[ECO "A34"]
[BlackElo "2310"]
[PlyCount "46"]
[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. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. d4 g6 6. Nxd5 Qxd5 7. Qc2 Bf5 8. Qxc5 Qxc5 9. dxc5 Bg7 10. Nd2 0-0 11. e4 Bd7 12. Rb1 Rc8 13. b4 a5 14. a3 axb4 15. axb4 b6 16. cxb6 Ra2 17. b5 Be6 18. Bd3 Rc3 19. Ke2 Nd7 20. f4 Bg4+ 21. Ke3 Nc5 22. Rb3 Nxb3 23. Nxb3 Re2# 0-1

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "2"]
[White "Ahlstrom, S."]
[Black "Holliman, Bob"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "55"]
[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. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 c6 6. e3 Nbd7 7. Qc2 Qa5 8. cxd5 exd5 9. Bd3 h6 10. Bh4 g5 11. Bg3 Nh5 12. 0-0-0 Ndf6 13. Ne5 Nxg3 14. hxg3 Ng4 15. Bf5 Nxe5 16. dxe5 Be6 17. Bxe6 fxe6 18. Qg6+ Kd7 19. Rxh6 Rxh6 20. Qxh6 b5 21. Kb1 b4 22. Ne4 b3 23. axb3 Rb8 24. Nf6+ Bxf6 25. exf6 Qd8 26. Qxg5 Rxb3 27. Rh1 Qb8 28. Qg7+ 1-0

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "5"]
[White "Ahlstrom, S."]
[Black "Schiller, Eric Andrew"]
[Result "1-0"]
[ECO "D47"]
[BlackElo "2230"]
[PlyCount "93"]
[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. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Be2 Bb7 9. 0-0 Be7 10. a3 a5 11. e4 b4 12. axb4 axb4 13. Rxa8 Qxa8 14. e5 bxc3 15. exf6 Bxf6 16. bxc3 0-0 17. Bg5 Qa5 18. Bxf6 Nxf6 19. Qb3 Ba8 20. c4 h6 21. c5 Nd7 22. Qe3 Bb7 23. Rc1 Ba6 24. Bd1 Bb5 25. Bc2 Nf6 26. Be4 Ra8 27. Ne5 Nxe4 28. Qxe4 Qd2 29. Qe3 Ra2 30. Re1 f6 31. Qxd2 Rxd2 32. Nf3 Re2 33. Rxe2 Bxe2 34. d5 exd5 35. Nd4 Ba6 36. Nxc6 Kf7 37. Nd4 Bc8 38. f4 f5 39. Kf2 g5 40. g3 Kf6 41. Ke3 h5 42. h4 g4 43. Nc2 Ke6 44. Kd4 Ba6 45. Nb4 Bc4 46. c6 Kd6 47. c7 1-0

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "1"]
[White "Kaushansky, Leonid"]
[Black "Ahlstrom, S."]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2355"]
[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. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. g3 Qc7 7. Bg2 Nf6 8. 0-0 Be7 9. a4 0-0 10. Nb3 d6 11. a5 Ne5 12. Qe2 Bd7 13. f4 Nc4 14. g4 h6 15. g5 hxg5 16. fxg5 Nh7 17. h4 Rac8 18. Qf2 Ne5 19. Bf4 f5 20. Bxe5 dxe5 21. exf5 exf5 22. Nd5 Bc5 23. Nxc5 Qxc5 24. Qxc5 Rxc5 25. Ne7+ Kf7 26. Nxf5 Bxf5 27. Rxf5+ Kg6 28. Rxf8 Nxf8 29. Bxb7 Kh5 30. Bxa6 Rxc2 31. Bd3 Rxb2 32. a6 Nd7 33. a7 Nb6 34. Ra6 Na8 35. Ra4 Rd2 36. Be4 Nb6 37. Bf3+ Kg6 38. Ra6 1-0

[Event "Midwest Masters"]
[Site "Chicago"]
[Date "1985.??.??"]
[Round "4"]
[White "Thomas, Kenneth S"]
[Black "Ahlstrom, S."]
[Result "1-0"]
[ECO "B22"]
[PlyCount "39"]
[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. c3 d5 4. exd5 exd5 5. d4 Nc6 6. Be2 Nf6 7. 0-0 Bd6 8. dxc5 Bxc5 9. Nbd2 Bd6 10. Nb3 Ne4 11. Be3 0-0 12. Nbd4 Be6 13. Qc2 Nxd4 14. Bxd4 Qa5 15. Be5 Be7 16. Nd4 Rac8 17. Bd3 Bd7 18. Bxe4 dxe4 19. Qxe4 Rfe8 20. Qxb7 1-0

