[Event "South America-ch U18 17th"]
[Site "Guayaquil"]
[Date "2022.01.29"]
[Round "7"]
[White "Barrantes Cueva, Roberth Manuel"]
[Black "Medina Cedeno, Alister Mathias"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "1670"]
[BlackElo "1107"]
[PlyCount "71"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 c4 5. g3 Be7 6. exd5 exd5 7. Bg2 Nf6 8. 0-0 0-0 9. b3 Bb4 10. bxc4 Bxd2 11. Nxd2 Be6 12. c5 Nc6 13. Nf3 h6 14. Bf4 Qd7 15. Ne5 Nxe5 16. Bxe5 Nh7 17. f4 Bh3 18. Qh5 Bxg2 19. Kxg2 Rfe8 20. Rfe1 Qc6 21. Qg4 Nf6 22. Bxf6 Qxf6 23. Re5 Rxe5 24. fxe5 Qg6 25. Qxg6 fxg6 26. c4 Rd8 27. Kf3 Kf7 28. cxd5 Rxd5 29. Ke4 Rd8 30. d5 Ke7 31. Rb1 Rb8 32. e6 b6 33. Ke5 Rf8 34. d6+ Ke8 35. cxb6 Rf5+ 36. Ke4 1-0

[Event "South America-ch U18 17th"]
[Site "Guayaquil"]
[Date "2022.01.29"]
[Round "8"]
[White "Medina Cedeno, Alister Mathias"]
[Black "Quinde Rizzo, Hugo Josue"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1107"]
[BlackElo "1555"]
[PlyCount "76"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. f4 c5 2. e3 Qc7 3. Nf3 Nc6 4. Bb5 Nf6 5. Nc3 e6 6. 0-0 Be7 7. Qe2 0-0 8. Bxc6 bxc6 9. d3 Ba6 10. b3 d5 11. Qf2 Rad8 12. Ne2 c4 13. Rd1 cxd3 14. cxd3 c5 15. h3 c4 16. dxc4 dxc4 17. Bb2 Ne4 18. Qe1 cxb3 19. a3 Qc2 20. Nc3 Nxc3 21. Bxc3 b2 22. Bxb2 Qxb2 23. Rdb1 Qc2 24. Rc1 Qe4 25. Rc7 Bf6 26. Rb1 Rb8 27. Rcc1 h6 28. Kh2 Rxb1 29. Rxb1 Rc8 30. Rc1 e5 31. Rxc8+ Bxc8 32. fxe5 Bxe5+ 33. Nxe5 Qxe5+ 34. Kh1 Bb7 35. Qf2 Qe4 36. Kh2 a5 37. Kg3 a4 38. Qf4 Qxg2+ 0-1

[Event "South America-ch U18 17th"]
[Site "Guayaquil"]
[Date "2022.01.28"]
[Round "6"]
[White "Medina Cedeno, Alister Mathias"]
[Black "Viscaino Yanez, Jhonny Cesar"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1107"]
[BlackElo "1875"]
[PlyCount "104"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. f4 d5 2. e3 Nf6 3. Nf3 Bg4 4. Be2 e6 5. 0-0 Be7 6. Ne5 Bxe2 7. Qxe2 Nbd7 8. Nf3 c5 9. d3 Qb6 10. b3 0-0-0 11. Ba3 h6 12. Rc1 Qc7 13. d4 Nb6 14. Qb5 cxd4 15. Bxe7 Qxe7 16. Nxd4 Kb8 17. a4 Qd7 18. a5 Qxb5 19. Nxb5 Nc8 20. a6 Nd6 21. N1c3 b6 22. Nxd6 Rxd6 23. Nb5 Rc6 24. Nd4 Rc3 25. h3 Ne4 26. Re1 Rhc8 27. b4 R8c4 28. b5 Nd6 29. Rab1 Rc5 30. Re2 Nc4 31. Kf2 Na5 32. Rb2 Kc7 33. g4 Kd6 34. h4 g6 35. g5 h5 36. Kf3 Nc4 37. Ra2 Ra3 38. c3 Rxc3 39. Nc6 Rxc6 40. bxc6 Kxc6 41. Rac2 Rb3 42. Kf2 b5 43. e4 d4 44. Red2 Rc3 45. Rxc3 dxc3 46. Ra2 b4 47. Rc2 Kc5 48. Rc1 Nd2 49. Ke2 Kc4 50. Ra1 b3 51. Ra4+ Kb5 52. Rd4 b2 0-1

[Event "South America-ch U18 17th"]
[Site "Guayaquil"]
[Date "2022.01.28"]
[Round "5"]
[White "Medina Cedeno, Daniel Andrew"]
[Black "Medina Cedeno, Alister Mathias"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "1117"]
[BlackElo "1107"]
[PlyCount "45"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. 0-0 Nc6 7. e3 Bxc3 8. dxc3 Qc7 9. Re1 0-0-0 10. a3 f6 11. b4 Ne5 12. Nxe5 Qxe5 13. Bxb7+ Kxb7 14. bxc5 Qxc5 15. Qd5+ Qxd5 16. cxd5 Rc8 17. Bb2 Nh6 18. Rac1 Rc4 19. Rc2 Nf7 20. Rd1 Ne5 21. Rd4 Rhc8 22. Rxc4 Nxc4 23. Bc1 1/2-1/2

[Event "South America-ch U18 17th"]
[Site "Guayaquil"]
[Date "2022.01.27"]
[Round "4"]
[White "Medina Cedeno, Alister Mathias"]
[Black "Salgado Villalba, Lucas Martin"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1107"]
[BlackElo "1552"]
[PlyCount "35"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. f4 e6 2. Nf3 d5 3. e3 Nf6 4. d4 Nbd7 5. b3 Be7 6. c4 Ne4 7. g3 h5 8. Bh3 Ndf6 9. c5 Ng4 10. Bxg4 hxg4 11. 0-0 gxf3 12. Qxf3 Bf6 13. Ba3 c6 14. Qe2 Qa5 15. b4 Qa6 16. Qxa6 bxa6 17. Bb2 a5 18. a3 0-1

[Event "South America-ch U18 17th"]
[Site "Guayaquil"]
[Date "2022.01.26"]
[Round "3"]
[White "Calderon Guerra, Danny Patricio"]
[Black "Medina Cedeno, Alister Mathias"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "1655"]
[BlackElo "1107"]
[PlyCount "95"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. Bg5 d5 4. e3 Be7 5. Bd3 Nc6 6. c3 a6 7. Nbd2 Bd7 8. Qc2 g6 9. h3 Nh5 10. Bh6 Bf8 11. Bxf8 Rxf8 12. 0-0-0 Qe7 13. e4 Nf4 14. Bf1 0-0-0 15. g3 Nh5 16. Bd3 Na7 17. Rhe1 Bc6 18. Ne5 Nf6 19. exd5 Nxd5 20. Be4 Qg5 21. h4 Qh6 22. Kb1 f5 23. Bh1 Rde8 24. Ndf3 Nf6 25. Nxc6 Nxc6 26. Ng5 Nd8 27. Qb3 Ne4 28. Bxe4 fxe4 29. Nxe4 Qg7 30. f4 Qd7 31. Re3 Qd5 32. Rde1 Qxb3 33. axb3 b6 34. Ng5 Re7 35. d5 h6 36. Nxe6 Rfe8 37. Re5 Nf7 38. R5e2 Nd6 39. Nd4 Rxe2 40. Rxe2 Rxe2 41. Nxe2 Nf5 42. c4 Kd7 43. Kc2 Kd6 44. Kc3 a5 45. Kd3 Kc5 46. h5 gxh5 47. Ke4 Nd6+ 48. Ke5 1-0

[Event "South America-ch U18 17th"]
[Site "Guayaquil"]
[Date "2022.01.25"]
[Round "1"]
[White "Medina Cedeno, Alister Mathias"]
[Black "Castillo Gonzalez, Thomas Davis"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1107"]
[BlackElo "1843"]
[PlyCount "76"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. f4 g6 2. Nf3 Bg7 3. e3 d6 4. Be2 Nf6 5. 0-0 0-0 6. Nc3 Nc6 7. d4 Bf5 8. a3 e5 9. d5 Ne7 10. fxe5 dxe5 11. Bc4 Ne4 12. Bd2 a6 13. Nxe4 Bxe4 14. Bb4 Re8 15. Bxe7 Qxe7 16. Nd2 Bf5 17. e4 Qc5+ 18. Kh1 Bxe4 19. Nxe4 Qxc4 20. Nf6+ Bxf6 21. Rxf6 Rad8 22. d6 cxd6 23. Rxd6 Rxd6 24. Qxd6 Qxc2 25. Qd7 Qc8 26. Rd1 Qxd7 27. Rxd7 b5 28. g3 Rc8 29. Rd2 f5 30. Kg2 Kf7 31. Kh3 Ke6 32. Re2 a5 33. Re3 b4 34. axb4 axb4 35. Rb3 Rc4 36. Re3 g5 37. Rd3 h6 38. Re3 Rc2 0-1

[Event "Pan American-ch U16"]
[Site "Guayaquil"]
[Date "2019.07.26"]
[Round "8"]
[White "Medina Cedeno, Alister Mathias"]
[Black "Harari Assis, David"]
[Result "1/2-1/2"]
[ECO "B70"]
[WhiteElo "1099"]
[BlackElo "1519"]
[PlyCount "31"]
[EventDate "2019.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. f4 g6 2. e4 d6 3. Nf3 Bg7 4. Be2 c5 5. d4 cxd4 6. Nxd4 Nf6 7. Nc3 0-0 8. 0-0 Qb6 9. Kh1 Nxe4 10. Nd5 Qxd4 11. Qxd4 Bxd4 12. Nc7 Nf2+ 13. Kg1 Nh3+ 14. Kh1 Nf2+ 15. Kg1 Nh3+ 16. Kh1 1/2-1/2

[Event "Pan American-ch U16"]
[Site "Guayaquil"]
[Date "2019.07.25"]
[Round "7"]
[White "Medina Cedeno, Alister Mathias"]
[Black "Blanco Cipra, Juan Carlos"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1099"]
[BlackElo "1119"]
[PlyCount "69"]
[EventDate "2019.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. f4 Nf6 2. e3 e6 3. Nf3 d5 4. d4 c5 5. b3 Nc6 6. c3 Be7 7. Be2 Bd7 8. 0-0 0-0 9. Ne5 Nxe5 10. fxe5 Ne4 11. Bb2 Rc8 12. Bf3 f5 13. c4 dxc4 14. bxc4 Bc6 15. Qe2 Qb6 16. Ba3 Ng5 17. Bxc6 Qxc6 18. Nd2 Ne4 19. Nxe4 Qxe4 20. Rf4 Qc6 21. e4 Bg5 22. d5 Qa6 23. Rf3 exd5 24. exd5 Be7 25. Raf1 Rfe8 26. Bc1 g6 27. Bh6 Rcd8 28. R1f2 Bd6 29. Re3 Bc7 30. d6 Bxd6 31. exd6 Rxe3 32. Qxe3 Qxd6 33. Re2 Qd4 34. Qxd4 cxd4 35. Kf2 1-0

