[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "2"]
[White "Elger Vargas, Ariel"]
[Black "MacDonald, Oscar"]
[Result "0-1"]
[ECO "D41"]
[PlyCount "60"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. e3 cxd4 5. exd4 d5 6. Nf3 Be7 7. cxd5 Nxd5 8. Bb5+ Bd7 9. Bxd7+ Nxd7 10. Nxd5 exd5 11. 0-0 0-0 12. Re1 Bf6 13. Bf4 Qb6 14. Rb1 Rac8 15. Ne5 Bxe5 16. Bxe5 f6 17. Bf4 Rc4 18. Be3 f5 19. f4 Nf6 20. h3 Rfc8 21. b3 Rc2 22. Rc1 Rxc1 23. Bxc1 Ne4 24. Bb2 Qh6 25. Rf1 Qc6 26. Qc1 Qc2 27. Ba3 Rc6 28. Bb2 Qe2 29. Qd1 Rc2 30. Ba3 Qxg2# 0-1

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "9"]
[White "Iglesias, Alejandro"]
[Black "MacDonald, Oscar"]
[Result "1/2-1/2"]
[ECO "A70"]
[WhiteElo "2200"]
[PlyCount "31"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. Nf3 g6 7. h3 Bg7 8. e4 0-0 9. Bd3 Re8 10. 0-0 Na6 11. Bf4 Nc7 12. a4 a6 13. Nd2 Nh5 14. Bh2 Be5 15. Bxe5 dxe5 16. Re1 1/2-1/2

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "7"]
[White "MacDonald, Oscar"]
[Black "Dansker, German"]
[Result "1-0"]
[ECO "B04"]
[PlyCount "94"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nf3 g6 7. Nc3 Bg7 8. Be3 Nc6 9. Be2 Bg4 10. Nd2 Bxe2 11. Nxe2 0-0 12. 0-0 d5 13. c5 Nc8 14. f4 e6 15. Nf3 N8e7 16. Qd2 h5 17. b4 Nf5 18. Bf2 Rc8 19. Ng3 Nce7 20. Nxf5 Nxf5 21. Rfd1 Qd7 22. a4 Rc7 23. Qe1 Rfc8 24. Ne5 Qe7 25. g3 Kh7 26. h3 Nh6 27. Kg2 Qf6 28. Qe2 h4 29. g4 Qxf4 30. Bxh4 Bxe5 31. Qxe5 Qxe5 32. dxe5 a5 33. Bf2 axb4 34. Rdb1 Ng8 35. Rxb4 Ra8 36. Rab1 Kg7 37. Rxb7 Rxb7 38. Rxb7 Rxa4 39. c6 Rc4 40. c7 Ne7 41. Bh4 Rc2+ 42. Kf1 g5 43. Bxg5 Ng6 44. Bd8 Nxe5 45. Rb8 Rc1+ 46. Ke2 d4 47. c8Q d3+ 1-0

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "3"]
[White "MacDonald, Oscar"]
[Black "Munoz Pantoja, Miguel Angel"]
[Result "1/2-1/2"]
[ECO "B33"]
[BlackElo "2260"]
[PlyCount "95"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. g3 0-0 13. Bg2 Ne7 14. Nxe7+ Qxe7 15. 0-0 Bb7 16. Qe2 f5 17. exf5 Bxg2 18. Kxg2 Qb7+ 19. Kg1 Rxf5 20. Rad1 d5 21. Nc2 Raf8 22. Ne3 Bxe3 23. fxe3 h5 24. Rxf5 Rxf5 25. Qg2 e4 26. Rf1 Qf7 27. Rxf5 Qxf5 28. Qf2 Qxf2+ 29. Kxf2 Kf7 30. h3 Ke6 31. Ke2 a5 32. Kd2 Kd6 33. Kc2 Kc5 34. Kd2 Kd6 35. Kc2 g6 36. Kd2 Ke6 37. Kc2 Kd6 38. Kd2 Kc6 39. Kc2 Kc5 40. Kd2 Kc4 41. Kc2 Kc5 42. Kd2 Kd6 43. Kc2 g5 44. Kd2 Ke6 45. Kc2 h4 46. g4 Kd6 47. Kd2 Ke5 48. Kc2 1/2-1/2

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "4"]
[White "MacDonald, Oscar"]
[Black "Pereyra Arcija, Diego"]
[Result "0-1"]
[ECO "C06"]
[BlackElo "2290"]
[PlyCount "98"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Ne4 5. Bd3 f5 6. exf6 Nxf6 7. Ne2 c5 8. c3 Nc6 9. Nf3 Bd6 10. Ng3 0-0 11. 0-0 e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. Bg5 h6 15. f4 Bxc3 16. bxc3 hxg5 17. fxg5 Ng4 18. Rxf8+ Qxf8 19. Qe2 c4 20. Rf1 Qc5+ 21. Kh1 Qe3 22. Qxe3 Nxe3 23. Re1 cxd3 24. Rxe3 Bf5 25. Nxf5 d2 26. Ne7+ Kf7 27. Rd3 Kxe7 28. Rxd2 Ke6 29. g4 Rc8 30. Rd3 Rc4 31. Re3+ Kd6 32. Rg3 Ke5 33. h4 Kf4 34. Kh2 Ra4 35. Rg2 Ra3 36. Rd2 Kxg4 37. Rd4+ Kh5 38. Rxd5 Kxh4 39. Rd4+ Kxg5 40. Rd7 b6 41. Rxg7+ Kf4 42. Rg2 Rxc3 43. Rb2 Ke4 44. Kg2 Kd3 45. Kf3 Rc2 46. Rb3+ Kc4 47. Ke4 Re2+ 48. Kf5 Rxa2 49. Re3 Rd2 0-1

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "1"]
[White "MacDonald, Oscar"]
[Black "Rodriguez, Adolfo Ivan"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "2260"]
[PlyCount "58"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. c3 Bd6 6. Nf3 Bg4 7. Be3 Nge7 8. Nbd2 Qd7 9. Qc2 0-0-0 10. b4 Rde8 11. h3 Bf5 12. g4 Bxd3 13. Qxd3 h5 14. Rg1 hxg4 15. hxg4 f6 16. 0-0-0 a5 17. a3 Na7 18. Nb3 b6 19. Kb2 a4 20. Nc1 Nb5 21. Ne2 g5 22. Nd2 c6 23. c4 dxc4 24. Nxc4 Kb7 25. Nxd6+ Qxd6 26. Rh1 Nd5 27. Rxh8 Rxh8 28. Bd2 Qe6 29. Qg6 Qxe2 0-1

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "8"]
[White "Magallanes, Gustavo"]
[Black "MacDonald, Oscar"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "113"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. Nbd2 Be7 5. e3 0-0 6. Bd3 b6 7. c3 Ba6 8. Bxa6 Nxa6 9. 0-0 h6 10. Bh4 Qe8 11. Ne5 Rc8 12. f4 Nb8 13. Qe2 Nfd7 14. Bxe7 Qxe7 15. Nxd7 Nxd7 16. e4 dxe4 17. Nxe4 c5 18. Rfd1 c4 19. Nf2 Nf6 20. Re1 Qc7 21. Qe5 Rfd8 22. Qxc7 Rxc7 23. g3 b5 24. a3 a5 25. Ne4 Nd5 26. Kf2 b4 27. Rab1 Rb8 28. axb4 axb4 29. Nd2 bxc3 30. bxc3 Ra8 31. Ra1 Rxa1 32. Rxa1 Nxc3 33. Rc1 Nb5 34. Rxc4 Rxc4 35. Nxc4 Nxd4 36. Ke3 Nc6 37. Ke4 g6 38. Ne5 Nxe5 39. fxe5 Kg7 40. h4 f6 41. Kf4 fxe5+ 42. Kxe5 Kf7 43. g4 g5 44. hxg5 hxg5 45. Ke4 Ke8 46. Kd4 Kd7 47. Kc5 Kc7 48. Kd4 Kd6 49. Ke4 e5 50. Kf5 Kd5 51. Kxg5 e4 52. Kf4 Kd4 53. g5 e3 54. Kf3 Kd3 55. g6 e2 56. g7 e1Q 57. g8Q 0-1

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "6"]
[White "Martinez Andres, Federico"]
[Black "MacDonald, Oscar"]
[Result "1-0"]
[ECO "C36"]
[PlyCount "67"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. Nf3 exf4 4. exd5 Nf6 5. Bc4 Bg4 6. 0-0 Be7 7. d4 0-0 8. Qd3 c6 9. dxc6 Nxc6 10. c3 Bd6 11. Bb3 Ne7 12. Nbd2 Bf5 13. Qe2 Ng6 14. Nc4 Re8 15. Qd1 Ng4 16. Nxd6 Qxd6 17. Ng5 Re7 18. Qf3 Rae8 19. Bxf4 Qd7 20. h3 Nf6 21. Be5 Nxe5 22. dxe5 Rxe5 23. Nxf7 Qxf7 24. Bxf7+ Kxf7 25. Qxf5 Rxf5 26. Rxf5 Kg6 27. Rff1 Ne4 28. Rae1 Kg5 29. Rf7 Nd6 30. Rxg7+ Kf6 31. Rxe8 Kxg7 32. Re7+ Kf6 33. Rxh7 Ke5 34. Rd7 1-0

[Event "Clarin GP op 4th"]
[Site "Potrero de los Funes"]
[Date "1995.??.??"]
[Round "5"]
[White "Palmisano, Juan Antonio"]
[Black "MacDonald, Oscar"]
[Result "1-0"]
[ECO "A61"]
[PlyCount "105"]
[EventDate "1995.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. h3 Bg7 8. Bf4 0-0 9. e3 a6 10. a4 Qc7 11. Bd3 Nbd7 12. 0-0 b6 13. Re1 Rb8 14. Qe2 Ra8 15. Bh2 Ne8 16. Rab1 f5 17. Ng5 Ne5 18. Bxe5 dxe5 19. e4 Nd6 20. b3 Qe7 21. Nf3 f4 22. Nd2 Qh4 23. f3 Rf6 24. Nc4 Nxc4 25. Bxc4 Rd6 26. Rbd1 h5 27. Nb1 g5 28. Qf2 Qxf2+ 29. Kxf2 Bd7 30. Na3 Kf8 31. Be2 Ke8 32. Rc1 a5 33. Bb5 h4 34. Ke2 Ke7 35. Bxd7 Kxd7 36. Kd3 Bh8 37. Kc4 Bg7 38. Kb5 Rb8 39. Red1 Bh8 40. Nc4 Bg7 41. Ka6 Rh6 42. Ka7 Rhh8 43. Nxb6+ Kd6 44. Ka6 Bf6 45. Nc4+ Kd7 46. Kxa5 Rxb3 47. Nb6+ Kd6 48. Rb1 Rxb1 49. Rxb1 Bd8 50. Ka6 Bxb6 51. Rxb6+ Kd7 52. Kb7 Rf8 53. a5 1-0

[Event "ARG-ch sf2"]
[Site "Neuquen"]
[Date "1992.??.??"]
[Round "1"]
[White "Alonso, Rodolfo"]
[Black "MacDonald, Oscar"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "81"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 5. Nb5 Bc5 6. Qd2 Bb6 7. N1c3 Nge7 8. Bd3 a6 9. Na3 0-0 10. 0-0 Ba5 11. Nc4 Bb4 12. Ne3 Kh8 13. f4 d6 14. a3 Bxc3 15. bxc3 g5 16. Nd5 Nxd5 17. exd5 Ne7 18. fxg5 Qe5 19. Bb2 Qg7 20. Rab1 Ng6 21. Bxg6 Qxg6 22. c4+ Kg8 23. Qc3 f6 24. gxf6 Bf5 25. f7+ Kxf7 26. Rxf5+ Qxf5 27. Rf1 Qxf1+ 28. Kxf1 Ke7+ 29. Kg1 Rae8 30. h3 Kd8 31. Qd2 Kc8 32. Qh6 Rf7 33. Qh5 Re1+ 34. Kh2 Ref1 35. Qe2 Kb8 36. Qe8+ Ka7 37. Bd4+ b6 38. a4 a5 39. c3 h5 40. Qh8 R1f5 41. Qh6 1-0

[Event "ARG-chT"]
[Site "Salta"]
[Date "1992.??.??"]
[Round "5"]
[White "Aparicio, Anibal"]
[Black "MacDonald, Oscar"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2330"]
[PlyCount "85"]
[EventDate "1992.??.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 f5 2. Nf3 d6 3. d4 g6 4. g3 Bg7 5. Bg2 Nf6 6. Nc3 0-0 7. 0-0 c6 8. d5 e5 9. dxe6 Bxe6 10. b3 Ne4 11. Nxe4 Bxa1 12. Nxd6 Qd7 13. Ng5 Rd8 14. c5 Na6 15. b4 Be5 16. Qd2 Qe7 17. Qe3 Bxa2 18. Nxb7 Nxb4 19. Nxd8 Rxd8 20. Nf3 Bf6 21. Qa3 Qxc5 22. Bd2 Rxd2 23. Nxd2 Qc3 24. Qc1 c5 25. Nf3 Qxc1 26. Rxc1 c4 27. Ne1 Bb3 28. e4 a5 29. exf5 gxf5 30. Bh3 a4 31. Bxf5 c3 32. Nc2 Nxc2 33. Bxc2 Bxc2 34. Rxc2 a3 35. Kf1 Kf7 36. Ke2 Ke6 37. Kd3 Kd5 38. Ra2 c2 39. Kxc2 Bb2 40. Rxb2 axb2 41. Kxb2 Ke4 42. f4 h5 43. h4 1-0

[Event "ARG-chT"]
[Site "Salta"]
[Date "1992.??.??"]
[Round "1"]
[White "Fiorucci, Mario Gustavo"]
[Black "MacDonald, Oscar"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2210"]
[PlyCount "38"]
[EventDate "1992.??.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Bd3 Bc6 6. Nf3 Nd7 7. 0-0 Ngf6 8. Qe2 Be7 9. c4 0-0 10. h3 b6 11. b3 Qc8 12. Neg5 Re8 13. Nxf7 Bxf3 14. Nh6+ gxh6 15. Qxe6+ Kh8 16. gxf3 Rg8+ 17. Kh1 Nf8 18. Qxc8 Rxc8 19. Bxh6 Re8 1/2-1/2

[Event "ARG-ch sf2"]
[Site "Neuquen"]
[Date "1992.??.??"]
[Round "6"]
[White "MacDonald, Oscar"]
[Black "Funes, Andres"]
[Result "1/2-1/2"]
[ECO "B00"]
[BlackElo "2225"]
[PlyCount "97"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 b6 2. Nf3 Bb7 3. Bc4 e6 4. Qe2 d6 5. Nc3 Nd7 6. d4 g6 7. a4 Be7 8. Bf4 Ngf6 9. e5 Nh5 10. Bd2 a6 11. d5 exd5 12. Bxd5 Bxd5 13. Nxd5 0-0 14. g4 Ng7 15. Bh6 c6 16. Nxe7+ Qxe7 17. exd6 Qxd6 18. 0-0 Rfe8 19. Qd1 Qe6 20. Ng5 Qd5 21. Qxd5 cxd5 22. Nf3 Re2 23. Rac1 Rc8 24. Rfd1 Re4 25. Rxd5 Rxg4+ 26. Kf1 Nc5 27. Rcd1 Nce6 28. Ng5 Rh4 29. Bxg7 Kxg7 30. Nxe6+ fxe6 31. Rd6 Rxc2 32. Rxe6 Rxb2 33. Rd7+ Kh6 34. a5 Rxh2 35. Rf7 bxa5 36. Rxa6 Ra2 37. Kg1 Rh5 38. Raa7 Rf5 39. Rxh7+ Kg5 40. Rhf7 Raxf2 41. Rxa5 Rxa5 42. Kxf2 Kg4 43. Rg7 g5 44. Rg8 Ra2+ 45. Kg1 Kh4 46. Rg7 g4 47. Rb7 Kh3 48. Rb3+ g3 49. Rb1 1/2-1/2

[Event "ARG-ch sf2"]
[Site "Neuquen"]
[Date "1992.??.??"]
[Round "4"]
[White "MacDonald, Oscar"]
[Black "Huenul, Marcelino"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "56"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 c6 5. Nc3 b5 6. Bb3 b4 7. Nd5 a5 8. Ba4 Bd7 9. Ne3 Nf6 10. e5 Nd5 11. exd6 Nb6 12. dxe7 Qxe7 13. c4 bxc3 14. bxc3 Nxa4 15. Qxa4 c5 16. Qc4 cxd4 17. Nxd4 0-0 18. 0-0 Rc8 19. Qd3 Qc5 20. Bb2 a4 21. Rac1 Nc6 22. Nc4 Nxd4 23. cxd4 Qb5 24. Ba3 Be6 25. Bc5 Rd8 26. Rfd1 Rac8 27. Nd6 Qxd3 28. Rxd3 Rxd6 0-1

[Event "ARG-chT"]
[Site "Salta"]
[Date "1992.??.??"]
[Round "2"]
[White "MacDonald, Oscar"]
[Black "Olguin, Monica"]
[Result "0-1"]
[ECO "B84"]
[PlyCount "73"]
[EventDate "1992.??.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. Be3 Be7 8. g4 h6 9. Qd2 Nc6 10. Rg1 Qc7 11. h4 Ne5 12. f4 Nc4 13. Bxc4 Qxc4 14. 0-0-0 b5 15. e5 dxe5 16. fxe5 Nd5 17. Nxd5 Qxd5 18. Kb1 Bb7 19. Nf5 Qxd2 20. Nxg7+ Kf8 21. Rxd2 Kxg7 22. Rd7 Bxh4 23. Rxb7 Bg5 24. Ba7 Rxa7 25. Rxa7 Be3 26. Rxa6 Bxg1 27. a4 b4 28. Ka2 Kg6 29. Kb3 Rb8 30. Rc6 Bd4 31. Rc4 Bxe5 32. Rxb4 Rxb4+ 33. Kxb4 Bxb2 34. a5 Kf6 35. Kc4 Ke5 36. a6 Bd4 37. Kd3 0-1

[Event "ARG-chT"]
[Site "Salta"]
[Date "1992.??.??"]
[Round "4"]
[White "MacDonald, Oscar"]
[Black "Scarella, Enrique Alejandro"]
[Result "0-1"]
[ECO "B72"]
[BlackElo "2255"]
[PlyCount "48"]
[EventDate "1992.??.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. g4 d5 9. Nxc6 bxc6 10. exd5 Nxd5 11. Nxd5 cxd5 12. Bb5+ Kf8 13. 0-0 h5 14. g5 Bh3 15. Re1 d4 16. Bf4 e5 17. Qf3 Bg4 18. Qa3+ Kg8 19. h3 Bf8 20. b4 exf4 21. hxg4 Qxg5 22. Bc6 hxg4 23. Re5 Qxe5 24. Bxa8 f3 0-1

[Event "ARG-chT"]
[Site "Salta"]
[Date "1992.??.??"]
[Round "7"]
[White "MacDonald, Oscar"]
[Black "Toscano, Francisco"]
[Result "1-0"]
[ECO "B38"]
[PlyCount "75"]
[EventDate "1992.??.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 Bd7 7. Be2 g6 8. Be3 Bg7 9. h3 0-0 10. 0-0 a6 11. f4 e6 12. Nb3 Qc7 13. a4 Ne7 14. Rc1 Bc6 15. Bf3 Ne8 16. a5 Qd7 17. Rf2 Rd8 18. Bb6 Nc7 19. Rd2 Nc8 20. e5 Nxb6 21. axb6 Bxf3 22. Qxf3 Na8 23. Nc5 Qc8 24. Nxb7 Rd7 25. Nxd6 Qc5+ 26. Qf2 Qxb6 27. Qxb6 Nxb6 28. c5 Nc8 29. Nce4 Rc7 30. g4 Ne7 31. g5 Rb8 32. Ra1 Rc6 33. Kf2 Nd5 34. Kg3 Rb3+ 35. Kg4 Ne3+ 36. Kh4 Bf8 37. Ra3 Rxa3 38. bxa3 1-0

[Event "ARG-ch sf2"]
[Site "Neuquen"]
[Date "1992.??.??"]
[Round "2"]
[White "MacDonald, Oscar"]
[Black "Vidal, Ramon"]
[Result "0-1"]
[ECO "B92"]
[BlackElo "2370"]
[PlyCount "70"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. Bg5 Nbd7 9. Qd2 Be7 10. 0-0-0 b5 11. f4 0-0 12. Bf3 Rc8 13. Qe3 b4 14. Nd5 Nxd5 15. exd5 Bxg5 16. fxg5 Bf5 17. Rd2 Nb6 18. Na5 Nc4 19. Nxc4 Rxc4 20. g4 Bxg4 21. Be4 Qc8 22. Rf1 a5 23. Rdf2 Bh5 24. Qd3 Bg6 25. Bxg6 hxg6 26. Qg3 Qg4 27. Qe3 Qd4 28. Qh3 Qxd5 29. Qd7 Qc6 30. Qa7 a4 31. Qe7 Rc8 32. c3 bxc3 33. b3 axb3 34. axb3 Rf4 35. Rxf4 exf4 0-1

[Event "ARG-chT"]
[Site "Salta"]
[Date "1992.??.??"]
[Round "3"]
[White "Nievas, G."]
[Black "MacDonald, Oscar"]
[Result "1/2-1/2"]
[ECO "C54"]
[PlyCount "54"]
[EventDate "1992.??.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. exf6 dxc4 8. Qe2+ Be6 9. cxd4 Nxd4 10. Nxd4 Bxd4 11. fxg7 Bxg7 12. 0-0 Qd3 13. Qh5 0-0-0 14. Nc3 Bxc3 15. bxc3 Rd5 16. Qh4 Rg8 17. Be3 Bg4 18. Bf4 Be2 19. Rfe1 Qe4 20. Qh3+ Kb8 21. Bg3 Qd3 22. Qh4 Rd7 23. Qf6 Rgd8 24. h3 Bh5 25. Re3 Qg6 26. Qf4 Qc6 27. Rae1 Bg6 1/2-1/2

[Event "ARG-ch sf2"]
[Site "Neuquen"]
[Date "1992.??.??"]
[Round "7"]
[White "Pacheco, Daniel"]
[Black "MacDonald, Oscar"]
[Result "1-0"]
[ECO "E80"]
[WhiteElo "2270"]
[PlyCount "59"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 g6 6. f3 Bg7 7. Bg5 Qb6 8. Qd2 0-0 9. Bd3 Na6 10. 0-0-0 Bd7 11. h4 Rfc8 12. h5 Nxh5 13. Bh6 Nf4 14. Bxg7 Kxg7 15. Bb1 Qd8 16. g3 Nh5 17. Nge2 h6 18. g4 Nf4 19. Nxf4 exf4 20. Qh2 Qg5 21. e5 Rh8 22. e6 fxe6 23. Ne4 Qe7 24. dxe6 Bc6 25. Nxd6 Qxe6 26. Rhg1 Qf6 27. Bxg6 Kxg6 28. Qc2+ Kg7 29. Nf5+ Kf8 30. Rd6 1-0

[Event "ARG-ch sf2"]
[Site "Neuquen"]
[Date "1992.??.??"]
[Round "5"]
[White "Quinteros, Diego"]
[Black "MacDonald, Oscar"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "57"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 5. Nb3 Qg6 6. Qe2 a5 7. a4 b6 8. Bf4 Bb4+ 9. c3 Ba6 10. Qe3 Bxf1 11. Kxf1 Bd6 12. Bxd6 Qxd6 13. Na3 Qe6 14. Nb5 0-0-0 15. N3d4 Qh6 16. Qg3 d6 17. Nxc6 Rd7 18. Qh3 Qxh3 19. gxh3 Kb7 20. Nbd4 Nf6 21. f3 Re8 22. b4 d5 23. e5 Ng8 24. bxa5 Ne7 25. Nxe7 Rdxe7 26. axb6 cxb6 27. f4 g6 28. Kf2 Rc8 29. Nb5 1-0

