[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.21"]
[Round "10"]
[White "Tatekawa Palacio, Shigeki"]
[Black "Arenas, Sebastian"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1288"]
[BlackElo "1300"]
[PlyCount "46"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. 0-0 d6 6. d3 Bg4 7. Bg5 Nd4 8. Nd5 Nxf3+ 9. gxf3 Bh3 10. Nxf6+ gxf6 11. Bd5 Rg8 12. f4 exf4 13. Qh5 Rxg5+ 14. Qxg5 fxg5 15. Rfe1 c6 16. c3 f6 17. d4 Bb6 18. b4 Qd7 19. f3 g4 20. Kf2 Qg7 21. a4 g3+ 22. Kg1 gxh2+ 23. Kf2 Qg2# 0-1

[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.20"]
[Round "9"]
[White "Cruz Munoz, Carlos Alberto"]
[Black "Arenas, Sebastian"]
[Result "1-0"]
[ECO "C45"]
[BlackElo "1300"]
[PlyCount "57"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. Nc3 Nxd4 7. Nd5 Qe5 8. Bd3 Nf6 9. f4 Qd6 10. Bc4 Nxe4 11. Bxd4 Qe6 12. Nxc7+ Kd8 13. Nxe6+ fxe6 14. Bxg7 Rg8 15. Be5 d6 16. Qf3 Bf2+ 17. Ke2 Bh4 18. Qxe4 d5 19. Qxh7 Rxg2+ 20. Kf3 Rf2+ 21. Ke3 Bd7 22. Rad1 Rc8 23. Qxh4+ Ke8 24. Bd6 Kf7 25. Qe7+ Kg6 26. Rhg1+ Rg2 27. Rxg2+ Kh6 28. Qg5+ Kh7 29. Qg7# 1-0

[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.19"]
[Round "7"]
[White "Arenas, Sebastian"]
[Black "Salguero, Miguel Angel"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "1300"]
[BlackElo "1500"]
[PlyCount "25"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nc3 dxe4 4. dxe4 Qxd1+ 5. Nxd1 e5 6. Nf3 Nf6 7. Nc3 Bc5 8. Bc4 0-0 9. Nxe5 Re8 10. Bf4 Nbd7 11. Ng6 hxg6 12. f3 b5 13. Bb3 0-1

[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.18"]
[Round "5"]
[White "Arenas, Sebastian"]
[Black "Bonilla, Julio Cesar"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1300"]
[BlackElo "1554"]
[PlyCount "26"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. Nc3 a6 5. a3 Nf6 6. b3 b5 7. Bd5 Bb7 8. b4 Be7 9. 0-0 0-0 10. Nh4 Rb8 11. Ne2 Re8 12. Ng6 Nxd5 13. Nxe7+ Ndxe7 0-1

[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.18"]
[Round "6"]
[White "Bedoya Cossio, Samuel"]
[Black "Arenas, Sebastian"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1300"]
[BlackElo "1300"]
[PlyCount "20"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Bg5 0-0 5. Nc3 Nc6 6. Nf3 d6 7. h3 h6 8. Bh4 a6 9. a3 b5 10. Ba2 Bb7 0-1

[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.17"]
[Round "4"]
[White "Pena Mora, Carlos"]
[Black "Arenas, Sebastian"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1542"]
[BlackElo "1300"]
[PlyCount "55"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. d4 d6 3. Bc4 Nf6 4. Nc3 g6 5. Nge2 Bg7 6. Bg5 0-0 7. Qd2 Nc6 8. 0-0-0 a6 9. Bh6 Re8 10. Bxg7 Kxg7 11. a3 b5 12. Ba2 Bb7 13. f3 Qe7 14. Kb1 Qf8 15. h4 h5 16. Qg5 Qh8 17. Ng3 Ne7 18. dxe5 dxe5 19. Qxe5 Qh6 20. Rd7 Nc6 21. Rxf7+ Kg8 22. Qxf6 Ne5 23. Rxc7+ Nf7 24. Bxf7+ Kf8 25. Bxg6+ Kg8 26. Bf7+ Kh7 27. Bd5+ Qg7 28. Qxg7# 1-0

[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.16"]
[Round "3"]
[White "Arenas, Sebastian"]
[Black "Henao, Sebastian"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1300"]
[BlackElo "1477"]
[PlyCount "14"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 e6 3. d3 a5 4. Bf4 Qf6 5. Qc1 Nc6 6. Nc3 Nd4 7. Qe3 Nxc2+ 0-1

[Event "COL-ch"]
[Site "Palmira"]
[Date "2017.05.16"]
[Round "2"]
[White "Gonzalez, Leandro"]
[Black "Arenas, Sebastian"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1614"]
[BlackElo "1300"]
[PlyCount "51"]
[EventDate "2017.05.15"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bc4 Ng8 8. Bf1 Bb6 9. Bc4 d6 10. 0-0 Qg6 11. Nd2 Bh3 12. Qf3 Bg4 13. Bxf7+ Qxf7 14. Qxg4 Nf6 15. Qe6+ Ne7 16. Qxf7+ Kxf7 17. Rae1 Rhf8 18. f4 Kg8 19. Ne6 Rfc8 20. Bxb6 axb6 21. a3 Ng6 22. h3 h5 23. Rf3 h4 24. f5 Ne8 25. fxg6 Ra5 26. Rf8# 1-0

