[Event "Mar del Plata International Open-07"]
[Site "Mar del Plata"]
[Date "1974.04.??"]
[Round "?"]
[White "De Mayo, Carlos"]
[Black "Seidler, Aldo Emilio"]
[Result "0-1"]
[ECO "B33"]
[PlyCount "60"]
[EventDate "1974.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bg5 h6 8. Bxf6 Bxc3+ 9. bxc3 Qxf6 10. Bd3 0-0 11. 0-0 d6 12. Qd2 g5 13. Be2 Qg6 14. f3 Rd8 15. g4 Be6 16. c4 Rac8 17. Qd1 f6 18. Bd3 Qf7 19. Qe2 Ne7 20. Nd2 Ng6 21. Rfb1 Nf4 22. Qf1 h5 23. h3 Qc7 24. Kh2 hxg4 25. fxg4 Rd7 26. Qf3 Rh7 27. Bf1 Rh4 28. Kg3 Qh7 29. Kf2 Nxh3+ 30. Bxh3 Rxh3 0-1

[Event "Zarate op"]
[Site "Zarate"]
[Date "1972.??.??"]
[Round "?"]
[White "De Mayo, Carlos"]
[Black "Sampaolesi, Nestor Jose"]
[Result "1/2-1/2"]
[ECO "B28"]
[PlyCount "121"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bg5 Qc7 8. Qf3 Bxc3+ 9. bxc3 d6 10. Bxf6 gxf6 11. Qxf6 Qxc3+ 12. Kd1 Rg8 13. Qxd6 Nc6 14. f3 Be6 15. Qd2 Rd8 16. Bd3 Qb2 17. Qc1 Rxd3+ 18. cxd3 Qxg2 19. Re1 Qxf3+ 20. Kd2 Rg2+ 21. Kc3 Qf2 22. Qd2 b5 23. Qxf2 Rxf2 24. Nd2 b4+ 25. Kc2 a5 26. Kd1 Nd4 27. Kc1 Rxh2 28. a3 b3 29. Rb1 a4 30. Rb2 Rh3 31. Nc4 Bxc4 32. dxc4 Rc3+ 33. Kd2 Rxc4 34. Kd3 Rc6 35. Rh1 Nb5 36. Rxh7 Nxa3 37. Rh8+ Ke7 38. Ra8 Rd6+ 39. Ke2 Nc4 40. Rb1 Nb6 41. Ra7+ Ke6 42. Rf1 f6 43. Ra6 Rc6 44. Rb1 Kd7 45. Rg1 a3 46. Rxa3 b2 47. Rb3 Rc1 48. Rg7+ Kc6 49. Rxb2 Nd7 50. Rf7 Rc4 51. Kd3 Rd4+ 52. Ke3 Kd6 53. Ra2 Ke6 54. Rg7 Rd1 55. Ra6+ Rd6 56. Ra8 f5 57. Rg6+ Nf6 58. Re8+ Kf7 59. Rxf6+ Kxf6 60. Rf8+ Ke7 61. Rxf5 1/2-1/2

[Event "Zarate op"]
[Site "Zarate"]
[Date "1972.??.??"]
[Round "?"]
[White "De Mayo, Carlos"]
[Black "Zarate, Jorge"]
[Result "0-1"]
[ECO "D37"]
[PlyCount "90"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 a6 6. e3 0-0 7. Rc1 Nbd7 8. Bd3 dxc4 9. Bxc4 b5 10. Be2 Bb7 11. 0-0 c5 12. dxc5 Nxc5 13. b4 Ncd7 14. Qb3 Nh5 15. Bg3 Nxg3 16. hxg3 Qb6 17. Kh2 Rac8 18. Rh1 Nf6 19. Bd3 Qd6 20. Ne2 Qxb4 21. Qxb4 Bxb4 22. Rxc8 Rxc8 23. Rc1 Rxc1 24. Nxc1 Kf8 25. Kg1 Ke7 26. Kf1 h6 27. Nd4 Ba5 28. Ncb3 Bb6 29. f3 g6 30. e4 e5 31. Ne2 h5 32. Nc3 Kd6 33. a4 b4 34. a5 bxc3 35. axb6 Kc6 36. Bc4 Kxb6 37. Ke1 a5 38. Bxf7 g5 39. Bc4 a4 40. Nc1 Kc5 41. Be2 Kd4 42. Kd1 Bc8 43. Kc2 Be6 44. Bb5 a3 45. Na2 Bxa2 0-1

[Event "Zarate op"]
[Site "Zarate"]
[Date "1972.??.??"]
[Round "?"]
[White "Emma, Jaime"]
[Black "De Mayo, Carlos"]
[Result "1-0"]
[ECO "D37"]
[PlyCount "49"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 d5 3. c4 e6 4. Nc3 Nbd7 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8. Bd3 g6 9. h4 Qc7 10. Bd2 h6 11. Rc1 b6 12. 0-0 Bb7 13. Re1 c4 14. Bc2 e5 15. Nxe5 Nxe5 16. Bf4 0-0-0 17. Bxe5 Qxe5 18. dxe5 Rxd1 19. Rcxd1 a6 20. Re3 Bc5 21. Rf3 Rf8 22. h5 Bc6 23. hxg6 fxg6 24. Rxf8+ Bxf8 25. Kf1 1-0

