[Event "Ajuela op 4th"]
[Site "Alajuela"]
[Date "2008.07.10"]
[Round "2"]
[White "Ramirez Alvarez, Alejandro"]
[Black "Arroyo, Luis"]
[Result "1-0"]
[ECO "E50"]
[WhiteElo "2531"]
[BlackElo "2018"]
[PlyCount "20"]
[EventDate "2008.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 0-0 7. 0-0 cxd4 8. exd4 Be7 9. d5 Nb4 10. d6 Nxd3 1-0

[Event "Alajuela op 2nd"]
[Site "Alajuela"]
[Date "2006.07.14"]
[Round "5"]
[White "Arroyo, Luis"]
[Black "Hernandez Basante, Francisco"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "2053"]
[BlackElo "2278"]
[PlyCount "50"]
[EventDate "2006.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Nf6 6. Nc3 d6 7. Be2 Bg7 8. f3 0-0 9. Qd2 d5 10. exd5 Nxd5 11. Nxd5 Qxd5 12. Nxc6 Qxc6 13. c3 Bf5 14. Rd1 Qa4 15. b3 Qa5 16. b4 Qa3 17. Bd4 Rfd8 18. f4 Bxd4 19. cxd4 Rac8 20. 0-0 Rc2 21. Qe1 Qe3+ 22. Rf2 Rxd4 23. Rxd4 Qxd4 24. a3 Qe3 25. Kf1 Rc1 0-1

[Event "CRI corr"]
[Site "Costa Rica"]
[Date "1994.??.??"]
[Round "?"]
[White "Arroyo, Luis"]
[Black "Benavides, L."]
[Result "1-0"]
[ECO "A00"]
[PlyCount "51"]
[EventDate "1994.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "CRI"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. h4 c5 2. b4 cxb4 3. Bb2 d5 4. e3 a6 5. Nf3 Bg4 6. Be2 e6 7. a3 bxa3 8. Nxa3 Nd7 9. c4 Ngf6 10. Ne5 Bxe2 11. Qxe2 Be7 12. Nxd7 Qxd7 13. g4 dxc4 14. Nxc4 Qd5 15. 0-0 Ne4 16. d3 Nc5 17. Nb6 Qd8 18. Nxa8 Bxh4 19. Rfc1 Nxd3 20. Nc7+ Ke7 21. Ba3+ Kf6 22. Qf3+ Kg6 23. Qe4+ Kh6 24. f4 Bf2+ 25. Kg2 Qh4 26. Rh1 1-0

