[Event "Veracruz op 2nd"]
[Site "Xalapa"]
[Date "2024.04.28"]
[Round "6"]
[White "Galaviz Valdez, Manuel Antonio"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2071"]
[BlackElo "2143"]
[PlyCount "69"]
[EventDate "2024.04.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bc4 0-0 6. Qe2 Nc6 7. c3 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. 0-0 Qe7 11. Re1 c6 12. a4 Bh6 13. Nb3 Bxc1 14. Raxc1 b6 15. Rcd1 Kg7 16. f3 Be6 17. Bxe6 Qxe6 18. Nc1 a6 19. Rd2 Rfd8 20. Red1 Qe7 21. b4 h6 22. Rxd8 Rxd8 23. Rxd8 Qxd8 24. Qd3 Nd7 25. Qxa6 c5 26. a5 cxb4 27. cxb4 bxa5 28. Qxa5 Qb8 29. Nd3 Kf8 30. Nc5 Nxc5 31. Qxc5+ Ke8 32. Kf2 f6 33. Qc6+ Kf7 34. b5 Qa7+ 35. b6 1-0

[Event "Veracruz op 2nd"]
[Site "Xalapa"]
[Date "2024.04.27"]
[Round "5"]
[White "Contreras Medina, Ruben Dario"]
[Black "Guillen Cristobal, Sandra Nayeli"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2143"]
[BlackElo "1966"]
[PlyCount "45"]
[EventDate "2024.04.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. 0-0 Nge7 7. d3 0-0 8. Qe1 d5 9. Bb3 Nd4 10. Nxd4 cxd4 11. Ne2 dxe4 12. dxe4 b5 13. Qf2 a5 14. a3 a4 15. Ba2 Nc6 16. Rd1 Qc7 17. e5 Rd8 18. Nxd4 Nxd4 19. Rxd4 Rxd4 20. Qxd4 Qxc2 21. Bd2 Bb7 22. Rc1 Qe4 23. Qxe4 1/2-1/2

[Event "Veracruz op 2nd"]
[Site "Xalapa"]
[Date "2024.04.27"]
[Round "4"]
[White "Perales Monter, Mario"]
[Black "Contreras Medina, Ruben Dario"]
[Result "0-1"]
[ECO "B38"]
[WhiteElo "1830"]
[BlackElo "2143"]
[PlyCount "72"]
[EventDate "2024.04.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. Nc3 cxd4 5. Nxd4 Bg7 6. e4 d6 7. Be2 0-0 8. Be3 Nc6 9. 0-0 Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. f3 a5 13. Nd5 Nd7 14. Bxg7 Kxg7 15. Ne3 a4 16. Ng4 Qa5 17. Qh6+ Kh8 18. Qe3 Qc5 19. h4 f5 20. exf5 gxf5 21. Qxc5 Nxc5 22. Ne3 f4 23. Ng4 Rf5 24. Kh2 Rh5 25. g3 Rf8 26. Rad1 Rhf5 27. gxf4 Rxf4 28. Kg3 h5 29. Ne3 Ne6 30. Nd5 Rg8+ 31. Kf2 Bxd5 32. Rxd5 Rxh4 33. Rb5 Nd4 34. Rxb7 Rh2+ 35. Ke3 Nxe2 36. Rxe7 Ng3 0-1

[Event "Veracruz op 2nd"]
[Site "Xalapa"]
[Date "2024.04.26"]
[Round "3"]
[White "Contreras Medina, Ruben Dario"]
[Black "Diaz Guerrero, Jesus Daniel"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2143"]
[BlackElo "1958"]
[PlyCount "64"]
[EventDate "2024.04.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. d3 Nge7 7. 0-0 d5 8. Bb3 Nd4 9. Nxd4 cxd4 10. Ne2 0-0 11. Qe1 dxe4 12. dxe4 Bd7 13. Qf2 Bc6 14. Ng3 Qa5 15. Bd2 Qc5 16. Kh1 a5 17. a4 b6 18. Rae1 Ra7 19. f5 exf5 20. exf5 Nxf5 21. Nxf5 Qxf5 22. Qxf5 gxf5 23. Rxf5 Rd7 24. Kg1 Rb7 25. Bg5 Re8 26. Rxe8+ Bxe8 27. Rd5 h6 28. Bh4 Bd7 29. Bf2 d3 30. Rxd3 Bxb2 31. Rd6 b5 32. Bd5 Be5 1/2-1/2

[Event "Veracruz op 2nd"]
[Site "Xalapa"]
[Date "2024.04.26"]
[Round "2"]
[White "Cori Quispe, Kevin Joel"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2468"]
[BlackElo "2143"]
[PlyCount "123"]
[EventDate "2024.04.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. f3 a5 13. b3 Nd7 14. Bf2 Nc5 15. Rab1 Qb6 16. Nb5 Rfc8 17. Rfd1 Qd8 18. Nd4 Qf8 19. Bf1 h5 20. g3 Kh7 21. Bg2 Rd8 22. Qe2 Bf6 23. f4 e5 24. Nxc6 bxc6 25. f5 Nd7 26. g4 h4 27. Be3 g5 28. Qd2 Nc5 29. Bxg5 Bxg5 30. Qxg5 Qh6 31. Qd2 f6 32. h3 Rd7 33. Qe1 Kg8 34. Rb2 Kf7 35. Qc3 Ke7 36. Re2 Raa7 37. Rdd2 Qg5 38. Re1 Ra8 39. Rf2 Raa7 40. Bf3 Ra8 41. Bd1 Raa7 42. Bc2 Nb7 43. Rd1 Ra8 44. a3 c5 45. Qd3 Nd8 46. Qd5 Rb8 47. b4 axb4 48. Ba4 Rdb7 49. Qxd6+ Kf7 50. axb4 cxb4 51. Qa6 Re7 52. c5 Qe3 53. g5 Qxg5+ 54. Rg2 Qe3+ 55. Kh2 Qf4+ 56. Kh1 Qf3 57. Qc4+ Ne6 58. fxe6+ Kf8 59. Rf1 Qxh3+ 60. Kg1 Qe3+ 61. Kh2 Rg7 62. e7+ 1-0

[Event "Mexico op"]
[Site "Puebla"]
[Date "2013.03.27"]
[Round "2"]
[White "Moradiabadi, Elshan"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "B37"]
[WhiteElo "2565"]
[BlackElo "2178"]
[PlyCount "89"]
[EventDate "2013.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 153 Extra"]
[Source "ChessBase"]
[SourceDate "2013.04.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.04.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 c5 4. Nc3 cxd4 5. Nxd4 Bg7 6. e4 0-0 7. Be2 d6 8. 0-0 Nc6 9. Nc2 a5 10. Be3 Nd7 11. f3 Nc5 12. Qd2 a4 13. Rad1 Qa5 14. Na3 Be6 15. Rfe1 Rfc8 16. Bf1 Qd8 17. Qf2 Nd7 18. Rc1 Qf8 19. Red1 Bh6 20. f4 f5 21. exf5 Qxf5 22. Nab5 Qf7 23. Ne4 Nf6 24. Nxf6+ Qxf6 25. g3 g5 26. c5 gxf4 27. gxf4 dxc5 28. Rxc5 Rd8 29. Re1 Bf7 30. Bg2 Rd7 31. Nc3 Rad8 32. Kh1 Kh8 33. Nxa4 Bxa2 34. Nc3 Bb3 35. Ne4 Qg7 36. Ng3 Rd1 37. Rc1 Rxc1 38. Bxc1 Bd5 39. Ne4 Qg4 40. Nc5 Bg7 41. Qg3 Qf5 42. Ne4 Bd4 43. Qg5 Qf7 44. Qg4 Rg8 45. Ng5 1-0

[Event "Badalona op 36th"]
[Site "Badalona"]
[Date "2010.08.02"]
[Round "1"]
[White "Corrales Jimenez, Fidel"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "D73"]
[WhiteElo "2574"]
[BlackElo "2147"]
[PlyCount "43"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 cxd4 7. Nxd4 d5 8. cxd5 Nxd5 9. Nb5 e6 10. e4 a6 11. N5a3 Nb6 12. Nc3 Nc6 13. Be3 Nd4 14. f4 e5 15. fxe5 Bxe5 16. Rf2 Qd6 17. Rd2 Rd8 18. Nc2 Nc4 19. Rxd4 Bxd4 20. Bxd4 Nxb2 21. Qf1 Qc6 22. Nd5 1-0

[Event "Mexican op 54th"]
[Site "Aguascalientes"]
[Date "2008.03.20"]
[Round "3"]
[White "Estrada Nieto, Julian"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2356"]
[BlackElo "2168"]
[PlyCount "73"]
[EventDate "2008.03.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. c3 e5 6. d3 Nge7 7. Be3 d6 8. d4 cxd4 9. cxd4 0-0 10. d5 Nb8 11. Nfd2 Bd7 12. Nc3 Na6 13. Rc1 Nc7 14. Bxd7 Qxd7 15. Qa4 b5 16. Qa5 Rfb8 17. a3 Nc8 18. Na2 Nb6 19. Nb4 Rb7 20. Rc2 f5 21. f3 Bf6 22. Rfc1 Bd8 23. Nc6 Ncxd5 24. exd5 Nxd5 25. Nxd8 Qxd8 26. Qxd8+ Rxd8 27. Bg5 Rdd7 28. Nb3 Kf7 29. Rd1 Ke6 30. Rc6 Ne7 31. Nc5+ Kf7 32. Nxd7 Nxc6 33. Rxd6 Rc7 34. Rxc6 Rxd7 35. Rc5 Ke6 36. Rxb5 Rd1+ 37. Kf2 1-0

[Event "Mexican op 53rd"]
[Site "Aguascalientes"]
[Date "2007.04.04"]
[Round "2"]
[White "Gonzalez Garcia, Jose"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "A58"]
[WhiteElo "2518"]
[BlackElo "2164"]
[PlyCount "93"]
[EventDate "2007.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 117 Extra"]
[Source "ChessBase"]
[SourceDate "2007.05.09"]
[SourceVersion "1"]
[SourceVersionDate "2007.05.09"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. Nf3 d6 8. g3 Bg7 9. Bg2 0-0 10. 0-0 Nbd7 11. Rb1 Qa5 12. Bd2 Rfb8 13. a4 Qd8 14. b3 Ra7 15. Qc2 Ng4 16. h3 Nge5 17. Nh2 Nf6 18. f4 Ned7 19. g4 e6 20. dxe6 fxe6 21. Rfe1 d5 22. e4 Kh8 23. e5 Ng8 24. Nf3 Ne7 25. Ng5 Qg8 26. Bf1 Nc6 27. Bxa6 Nb4 28. Qd1 Rxa6 29. Qe2 Rc6 30. Nb5 h6 31. Nf3 Bf8 32. Kh1 Be7 33. Rbc1 Rcc8 34. Rg1 Qf8 35. f5 gxf5 36. g5 f4 37. Nh4 Qf7 38. g6 Qg7 39. Nd6 Bxd6 40. exd6 Rf8 41. Bc3 d4 42. Bxb4 Rxb4 43. Qxe6 Rf6 44. Qd5 Rb6 45. Nf5 Qg8 46. g7+ Kh7 47. Qxg8+ 1-0

[Event "MEX-ch op 52nd "]
[Site "Mexico City"]
[Date "2006.04.15"]
[Round "8"]
[White "Contreras Medina, Ruben Dario"]
[Black "Villarreal, Jose Felix"]
[Result "0-1"]
[ECO "D23"]
[WhiteElo "2167"]
[BlackElo "2362"]
[PlyCount "49"]
[EventDate "2006.04.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ Nbd7 5. Nc3 c6 6. Qxc4 Qa5 7. g3 Nb6 8. Qb3 Be6 9. Qc2 Bf5 10. Qb3 e6 11. Bg2 Qb4 12. Qxb4 Bxb4 13. Nd2 0-0-0 14. e3 Bd3 15. Bf1 Bxf1 16. Kxf1 Rhe8 17. Kg2 Bxc3 18. bxc3 Na4 19. c4 e5 20. Nf3 exd4 21. exd4 Re2 22. Bg5 Nb2 23. Bxf6 gxf6 24. c5 Nd3 25. Rhf1 0-1

[Event "MEX-ch op 52nd "]
[Site "Mexico City"]
[Date "2006.04.15"]
[Round "7"]
[White "Huertas Soris, Ramon Antonio"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2288"]
[BlackElo "2167"]
[PlyCount "138"]
[EventDate "2006.04.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c3 g6 3. Bg5 Bg7 4. Nd2 d6 5. e3 0-0 6. Bd3 c5 7. Ne2 Nc6 8. f3 Rb8 9. a4 a6 10. 0-0 b5 11. axb5 axb5 12. e4 Qb6 13. Be3 c4 14. Bc2 e5 15. Bf2 Qc7 16. d5 Nd8 17. b3 cxb3 18. Nxb3 Nd7 19. Bd3 Nc5 20. Nxc5 dxc5 21. c4 b4 22. Nc1 Nb7 23. Nb3 Bd7 24. Ra6 Rfc8 25. Qa1 Bf8 26. Ra7 Qd6 27. Bg3 Bg7 28. Rf2 Qe7 29. Rfa2 Qg5 30. Bf2 Bh3 31. Qf1 Bf8 32. Kh1 Bd7 33. R2a6 Qd8 34. Qa1 Bg7 35. Bg3 f6 36. Qc1 g5 37. Bf2 Bf8 38. Qf1 h6 39. Be3 Be7 40. Be2 Ra8 41. Qa1 Rab8 42. Qd1 Be8 43. h3 Ra8 44. Qa1 Rxa7 45. Rxa7 Qb6 46. Kg1 Kf8 47. h4 Bd7 48. hxg5 hxg5 49. Kf2 Bd6 50. Ra6 Qc7 51. Ra7 Qb6 52. Qa6 Qxa6 53. Rxa6 Ke7 54. Ra7 Rb8 55. Ke1 Kd8 56. Ra6 Kc7 57. Kd2 Rh8 58. Ra7 Kb6 59. Rxb7+ Kxb7 60. Nxc5+ Bxc5 61. Bxc5 b3 62. Ba3 Rh1 63. c5 Rg1 64. c6+ Bxc6 65. dxc6+ Kxc6 66. g4 Ra1 67. Bb2 Rb1 68. Ba3 Ra1 69. Bb2 Rb1 1/2-1/2

[Event "MEX-ch op 52nd "]
[Site "Mexico City"]
[Date "2006.04.14"]
[Round "6"]
[White "Contreras Medina, Ruben Dario"]
[Black "Palma Almendra, Jose Amado"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "2167"]
[BlackElo "2231"]
[PlyCount "71"]
[EventDate "2006.04.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Nf3 e5 6. d5 Nce7 7. Be2 f5 8. 0-0 Nf6 9. Nd2 0-0 10. b4 a5 11. Ba3 b6 12. bxa5 Rxa5 13. Bb4 Ra8 14. a4 Bh6 15. a5 c5 16. dxc6 Nxc6 17. Ba3 bxa5 18. Nb5 Nd4 19. Nxd4 exd4 20. exf5 Bxf5 21. Nb3 Ne4 22. Qxd4 Bg7 23. Qd5+ Kh8 24. Bf3 a4 25. Nd4 Ra5 26. Nb5 Nc3 27. Qd2 Nxb5 28. cxb5 Rxb5 29. Rad1 Be5 30. Bd5 Qf6 31. Bc4 Rbb8 32. f4 Bb2 33. Qxd6 Bxa3 34. Qxa3 Rb2 35. Qd6 Qg7 36. Rfe1 1/2-1/2

[Event "MEX-ch op 52nd "]
[Site "Mexico City"]
[Date "2006.04.14"]
[Round "5"]
[White "Lares Flores, Manuel"]
[Black "Contreras Medina, Ruben Dario"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2273"]
[BlackElo "2167"]
[PlyCount "50"]
[EventDate "2006.04.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 f6 6. Nbd2 e5 7. b3 Nh6 8. 0-0 Nf7 9. a4 a5 10. Qe1 Be6 11. Nc4 g5 12. Kh1 h5 13. Bd2 b6 14. Bc3 Bd6 15. Nfd2 Bc7 16. Ne3 Qd7 17. f3 0-0-0 18. Rf2 Rh6 19. Ndf1 Rg8 20. Ng3 Nd6 21. Bd2 Rh7 22. Rb1 h4 23. Ngf1 Ne8 24. h3 Ng7 25. Ng4 Nh5 0-1

[Event "Carlos Torre Memorial op 18th"]
[Site "Merida"]
[Date "2005.12.20"]
[Round "8"]
[White "Albarran Capistran, Alejandro"]
[Black "Contreras Medina, Ruben Dario"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2136"]
[BlackElo "2196"]
[PlyCount "72"]
[EventDate "2005.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. 0-0 Bg7 6. d3 e5 7. Be3 b6 8. Nbd2 Nh6 9. h3 f6 10. a3 Bf8 11. b4 cxb4 12. axb4 Nf7 13. Qb1 g5 14. d4 h5 15. Qb2 g4 16. Nh4 Rg8 17. hxg4 Bxg4 18. Qc3 Bd7 19. Nc4 b5 20. Nb2 Rg4 21. Nf3 Bd6 22. Nd3 Qe7 23. Rfe1 h4 24. dxe5 fxe5 25. Nc5 Bxc5 26. Bxc5 Qf6 27. Red1 Qg7 28. Ne1 Rg6 29. Qe3 Nh6 30. Ra3 Ng4 31. Qf3 Nf6 32. Qc3 Nh5 33. Rd6 Rg5 34. Qd2 Nf4 35. f3 Nxg2 36. Nxg2 h3 0-1

[Event "Carlos Torre Memorial op 18th"]
[Site "Merida"]
[Date "2005.12.17"]
[Round "4"]
[White "Zepeda, Sonia"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2029"]
[BlackElo "2196"]
[PlyCount "57"]
[EventDate "2005.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. f3 a5 13. b3 Nd7 14. Be3 Nc5 15. Rac1 f5 16. exf5 gxf5 17. Rfe1 b6 18. Bf1 Ra7 19. Rcd1 Rd7 20. Nd5 Kh8 21. Bg5 Bxd5 22. cxd5 Rc7 23. Bb5 Bf6 24. Bxf6+ Rxf6 25. Re2 Nd7 26. Bxd7 Qxd7 27. Qd4 Qb5 28. Rxe7 Qc5 29. Rxc7 1-0

[Event "Carlos Torre Memorial op 18th"]
[Site "Merida"]
[Date "2005.12.16"]
[Round "3"]
[White "Contreras Medina, Ruben Dario"]
[Black "Mitkov, Nikola"]
[Result "0-1"]
[ECO "E51"]
[WhiteElo "2196"]
[BlackElo "2520"]
[PlyCount "132"]
[EventDate "2005.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. Nf3 Nc6 7. 0-0 a6 8. Qc2 h6 9. a3 dxc4 10. Bxc4 Bd6 11. Rd1 Qe7 12. Be2 e5 13. d5 Nb8 14. e4 Nbd7 15. b4 Nh5 16. Bb2 Nf4 17. Bf1 Nf6 18. h3 g5 19. Ne2 Bd7 20. Re1 N6h5 21. Ng3 Rae8 22. Qc3 Ng7 23. Rac1 h5 24. Ne2 Ng6 25. Nd2 g4 26. hxg4 Bxg4 27. Nc4 h4 28. Ne3 Bd7 29. f4 Nh5 30. f5 Ngf4 31. Nxf4 Nxf4 32. Ng4 Qg5 33. Qf3 f6 34. Nf2 Re7 35. Nh3 Nxh3+ 36. Qxh3 Rg7 37. Rc3 Qg4 38. Bc1 Rff7 39. Kh2 Qh5 40. Be2 Qh8 41. Bd2 Bb5 42. Bd1 Rh7 43. Kg1 Rfg7 44. Bb3 Kf8 45. Rec1 Rg8 46. Be1 Rhg7 47. Bd1 Be8 48. Be2 Bh5 49. Bf1 Bg4 50. Qd3 Qh5 51. Bf2 Rf7 52. Kh2 Bxf5 53. Bc5 Rg3 54. Bxd6+ cxd6 55. Qb1 Bg6 56. Rc8+ Kg7 57. Rd8 Qg5 58. Rcc8 Bh7 59. Qe1 Qf4 60. Kh1 Re3 61. Qc1 Qxe4 62. Rc7 Re1 63. Rxf7+ Kxf7 64. Qh6 Rxf1+ 65. Kh2 Qf4+ 66. Qxf4 Rxf4 0-1

[Event "Carlos Torre Memorial op 18th"]
[Site "Merida"]
[Date "2005.12.16"]
[Round "2"]
[White "Quesada Perez, Yuniesky"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2505"]
[BlackElo "2196"]
[PlyCount "77"]
[EventDate "2005.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. Bd3 a5 13. Rfe1 Nd7 14. Bxg7 Kxg7 15. Re3 Rh8 16. Bf1 a4 17. Kh1 Qa5 18. Rae1 Rad8 19. f4 f6 20. Qf2 e5 21. f5 Qb6 22. h4 Rhg8 23. fxg6 hxg6 24. Rd1 Rh8 25. g3 Nc5 26. Bg2 Ne6 27. Kg1 Rhf8 28. Red3 Qc5 29. Qxc5 dxc5 30. Rxd8 Rxd8 31. Rxd8 Nxd8 32. Kf2 Nf7 33. Bf1 Nd6 34. Bd3 f5 35. exf5 gxf5 36. Ke3 Kf6 37. Be2 Ke6 38. Bf1 Kf6 39. Be2 1/2-1/2

[Event "MEX-ch Nat & Int 48th"]
[Site "Hermosillo"]
[Date "2002.03.31"]
[Round "9"]
[White "Ambrosio Gallardo, Felix"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1/2-1/2"]
[ECO "A56"]
[WhiteElo "2122"]
[BlackElo "1995"]
[PlyCount "5"]
[EventDate "2002.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 1/2-1/2

[Event "MEX-ch Nat & Int 48th"]
[Site "Hermosillo"]
[Date "2002.03.30"]
[Round "8"]
[White "Contreras Medina, Ruben Dario"]
[Black "Martha Palafox, Jaime Lionel"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1995"]
[BlackElo "2196"]
[PlyCount "67"]
[EventDate "2002.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 b5 4. a3 dxe4 5. Nxe4 Nf6 6. Nxf6+ gxf6 7. Nf3 Be6 8. Be2 Rg8 9. Bf4 Nd7 10. 0-0 Nb6 11. Bg3 Bh6 12. b3 Qd7 13. Re1 a5 14. Bd3 Rg7 15. Qe2 Bg5 16. c4 bxc4 17. bxc4 Nc8 18. h4 Bh6 19. Rab1 Rg4 20. d5 cxd5 21. cxd5 Qxd5 22. Qc2 Nd6 23. Red1 Kf8 24. Bxd6 Qxf3 25. Bg3 Rxg3 26. fxg3 Qxg3 27. Kf1 Rc8 28. Qf2 Qh2 29. Ba6 Bc4+ 30. Bxc4 Rxc4 31. Rb3 Qh1+ 32. Qg1 Qxh4 33. Rf3 Qe4 34. Qf2 0-1

[Event "MEX-ch Nat & Int 48th"]
[Site "Hermosillo"]
[Date "2002.03.30"]
[Round "7"]
[White "Villegas Corona, Rafael"]
[Black "Contreras Medina, Ruben Dario"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2064"]
[BlackElo "1995"]
[PlyCount "133"]
[EventDate "2002.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[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 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. a4 Nb4 10. Ndb5 d6 11. 0-0 b6 12. e5 dxe5 13. Qxd8 Rxd8 14. Bxb6 Rd7 15. Rfe1 Bb7 16. Nc7 Rc8 17. N7b5 Nc6 18. Rad1 Bf8 19. Nd5 Kg7 20. Nxf6 Rxd1 21. Nh5+ gxh5 22. Rxd1 Rb8 23. Rd3 f5 24. Rg3+ Kf6 25. Nc7 Nd4 26. Bxd4 exd4 27. Ne6 Bh6 28. Nxd4 Rd8 29. c3 Bc1 30. Ne2 Bxb2 31. Nf4 Bc1 32. Nxh5+ Ke5 33. Rg7 Rd7 34. Rxh7 Be4 35. Ng3 Bd3 36. h4 Rb7 37. Bd1 Bd2 38. Be2 Bc2 39. Bf3 Ra7 40. Ne2 Bxa4 41. h5 Bb3 42. Nd4 a4 43. Rg7 Kf6 44. Rg6+ Kf7 45. Nxb3 axb3 46. Bd5+ Ke8 47. Bxb3 Bxc3 48. Be6 Kd8 49. h6 f4 50. h7 Kc7 51. Rg8 Kd6 52. Bc8 Ra1+ 53. Kh2 Ra2 54. h8Q Bxh8 55. Rxh8 Rxf2 56. Rh6+ Kc7 57. Bg4 Rb2 58. Re6 Rb4 59. Rxe7+ Kd6 60. Re1 Rb8 61. Re4 Rf8 62. Kg1 Kd5 63. Re2 Kd4 64. Kf2 Kd3 65. Kf3 Rg8 66. Bf5+ Kd4 67. Kxf4 1-0

[Event "MEX-ch Nat & Int 48th"]
[Site "Hermosillo"]
[Date "2002.03.29"]
[Round "5"]
[White "Floresvillar Gonzalez, Luis Miguel"]
[Black "Contreras Medina, Ruben Dario"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2213"]
[PlyCount "110"]
[EventDate "2002.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 087 Extra"]
[Source "ChessBase"]
[SourceDate "2002.05.03"]
[SourceVersion "2"]
[SourceVersionDate "2002.08.09"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 e6 6. Re1 Nge7 7. d3 0-0 8. c3 b6 9. Bg5 h6 10. Bf4 d5 11. h4 e5 12. Be3 Bg4 13. Qc2 Rc8 14. Na3 Qd7 15. Rad1 d4 16. Bc1 a6 17. Nc4 Rb8 18. Ncd2 Kh7 19. Nf1 b5 20. N1h2 Be6 21. cxd4 cxd4 22. Bd2 Rfc8 23. b3 Nb4 24. Qb1 Nc2 25. Re2 b4 26. Bc1 Qc6 27. Bb2 Na3 28. Bxa3 bxa3 29. Ne1 Bf8 30. Nhf3 Qb5 31. Rc1 Nc6 32. Rec2 f6 33. Bf1 a5 34. Qa1 a4 35. bxa4 Qxa4 36. Be2 Bb4 37. Bd1 Qa6 38. h5 g5 39. Kg2 Bc3 40. Rxc3 dxc3 41. Rxc3 Rb2 42. Bb3 Bxb3 43. Rxb3 Rxb3 44. axb3 Nb4 45. Nxe5 fxe5 46. Qxe5 a2 47. Nc2 Nxc2 48. Qf5+ Kg8 49. Qd5+ Kf8 50. Qf5+ Ke7 51. Qh7+ Kd8 52. Qg8+ Kc7 53. Qg7+ Kb8 54. Qe5+ Rc7 55. Qe8+ Kb7 0-1

[Event "MEX-ch Nat & Int 48th"]
[Site "Hermosillo"]
[Date "2002.03.28"]
[Round "4"]
[White "Contreras Medina, Ruben Dario"]
[Black "Villarreal, Jose Felix"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "2369"]
[PlyCount "60"]
[EventDate "2002.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 087 Extra"]
[Source "ChessBase"]
[SourceDate "2002.05.03"]
[SourceVersion "2"]
[SourceVersionDate "2002.08.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. Nbd2 0-0 8. Nf1 Re8 9. Ne3 Nd7 10. 0-0 Ndf6 11. c4 c6 12. a3 b6 13. b3 Bb7 14. Nf5 Bc7 15. Bb2 Qd7 16. Ng3 Rad8 17. Qc2 Qd6 18. Ne5 c5 19. Rad1 cxd4 20. Nf3 Nc5 21. Nxd4 Nxd3 22. Ndf5 Qc6 23. Nd4 Qc5 24. Rxd3 dxc4 25. bxc4 Bxg3 26. hxg3 Be4 27. Qc3 Bxd3 28. Qxd3 Ng4 29. Qc3 f6 30. Nf3 Nxf2 0-1

[Event "MEX-ch Nat & Int 48th"]
[Site "Hermosillo"]
[Date "2002.03.28"]
[Round "3"]
[White "Vega Granillo, Alejandro"]
[Black "Contreras Medina, Ruben Dario"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2230"]
[PlyCount "86"]
[EventDate "2002.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 087 Extra"]
[Source "ChessBase"]
[SourceDate "2002.05.03"]
[SourceVersion "2"]
[SourceVersionDate "2002.08.09"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nxc6 bxc6 6. Qd4 Nf6 7. e5 Nd5 8. e6 Nf6 9. exf7+ Kxf7 10. Bc4+ d5 11. Bb3 e5 12. Qa4 Bd7 13. Bg5 Be7 14. Nc3 Kg7 15. 0-0-0 h6 16. Bxf6+ Bxf6 17. Qa6 Qb6 18. Qxb6 axb6 19. Ne4 Be7 20. c4 d4 21. a3 Rhf8 22. f3 Be6 23. Kd2 Rab8 24. Kd3 b5 25. Rd2 g5 26. h3 h5 27. Ba2 b4 28. axb4 Rxb4 29. b3 Ra8 30. Rc1 Bf5 31. Re1 Rb7 32. Ree2 Ra6 33. Rb2 Bb4 34. Rf2 Be1 35. Rfe2 Bc3 36. Rbc2 g4 37. hxg4 hxg4 38. Rf2 g3 39. Rfe2 Ba5 40. Rc1 Kg6 41. Rh1 Rba7 42. Rc1 Bb4 43. Rcc2 c5 0-1

[Event "MEX-ch Nat & Int 48th"]
[Site "Hermosillo"]
[Date "2002.03.27"]
[Round "2"]
[White "Contreras Medina, Ruben Dario"]
[Black "Jason, Alford"]
[Result "1-0"]
[ECO "B70"]
[BlackElo "2178"]
[PlyCount "101"]
[EventDate "2002.03.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 087 Extra"]
[Source "ChessBase"]
[SourceDate "2002.05.03"]
[SourceVersion "2"]
[SourceVersionDate "2002.08.09"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. 0-0 0-0 8. h3 Nxe4 9. Bxf7+ Kxf7 10. Nxe4 h6 11. c4 Qb6 12. Nb3 Be6 13. Qe2 Qa6 14. Nbd2 Nc6 15. Re1 Nd4 16. Qd3 Rac8 17. b3 d5 18. Ng3 Nc2 19. Qxc2 Bxa1 20. Nf3 Bg7 21. Bxh6 Bxh6 22. Ne5+ Ke8 23. Qxg6+ Bf7 24. Qh7 Qf6 25. Nf5 Bg6 26. Nxg6 Rf7 27. Qg8+ Bf8 28. Nxf8 Rxf8 29. Ng7+ Kd8 30. Qxd5+ Kc7 31. Ne6+ Kb8 32. Nxf8 Rxf8 33. Qe5+ Qxe5 34. Rxe5 Rf7 35. h4 Kc7 36. g3 Kd6 37. f4 Rf6 38. Kf2 Rg6 39. Kf3 Rg7 40. h5 Rh7 41. g4 a6 42. a4 Rh8 43. Ke4 Rh7 44. b4 Rh8 45. c5+ Kd7 46. b5 Rh6 47. f5 Rh8 48. Kf4 Rh7 49. Re6 axb5 50. axb5 Ke8 51. f6 1-0

[Event "MEX-ch U20"]
[Site "Mexico City"]
[Date "2001.??.??"]
[Round "3"]
[White "Contreras Medina, Ruben Dario"]
[Black "Contreras Torres, Javier"]
[Result "0-1"]
[ECO "B51"]
[BlackElo "2222"]
[PlyCount "58"]
[EventDate "2001.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 e5 5. Bb5+ Nd7 6. Bxd7+ Bxd7 7. Qd3 h6 8. 0-0 Nf6 9. Nc3 a6 10. a4 Be7 11. Nd2 Be6 12. Nc4 Rc8 13. Ne3 Qa5 14. f4 Qc5 15. Kh1 Qd4 16. f5 Bc4 17. Nxc4 Qxc4 18. Be3 0-0 19. Qd2 Nxe4 20. Nxe4 Qxe4 21. c3 f6 22. Rf3 Rf7 23. b3 Qc6 24. c4 Rd8 25. Rd1 b5 26. axb5 axb5 27. cxb5 Qxb5 28. Rg3 Kf8 29. Rc1 d5 0-1

