[Event "Santa Barbara op"]
[Site "Santa Barbara"]
[Date "2023.03.04"]
[Round "6"]
[White "Campos Cerdas, Jorge"]
[Black "Guillen Murillo, Sergio Guillermo"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "1735"]
[BlackElo "1721"]
[PlyCount "27"]
[EventDate "2023.01.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bxf3 6. Qxf3 Nbd7 7. Bd3 e5 8. Ne2 g6 9. c3 Bg7 10. 0-0 0-0 11. Bc2 Qc7 12. Ng3 Rfe8 13. Re1 Qb6 14. dxe5 1/2-1/2

[Event "Santa Barbara op"]
[Site "Santa Barbara"]
[Date "2023.02.25"]
[Round "5"]
[White "Avendano Porras, Rodrigo"]
[Black "Guillen Murillo, Sergio Guillermo"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1908"]
[BlackElo "1721"]
[PlyCount "53"]
[EventDate "2023.01.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e6 4. Bd3 Be7 5. Be3 c6 6. g4 e5 7. f3 a5 8. Qd2 Na6 9. Nge2 Nb4 10. Ng3 Nxd3+ 11. Qxd3 b6 12. 0-0-0 Qc7 13. g5 Nd7 14. Nf5 g6 15. Nxe7 Kxe7 16. Qc4 Ra7 17. d5 Bb7 18. Nb5 Ba6 19. dxc6 Bxb5 20. Qxb5 Nb8 21. f4 Rc8 22. fxe5 Qxc6 23. exd6+ Ke8 24. Qxc6+ Rxc6 25. Rd5 Kd7 26. Rf1 Ke6 27. d7 1-0

[Event "Santa Barbara op"]
[Site "Santa Barbara"]
[Date "2023.02.18"]
[Round "4"]
[White "Guillen Murillo, Sergio Guillermo"]
[Black "Aguero Espinoza, Sebasthian"]
[Result "1/2-1/2"]
[ECO "A15"]
[WhiteElo "1721"]
[BlackElo "1517"]
[PlyCount "72"]
[EventDate "2023.01.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 d6 5. g3 0-0 6. Bg2 e5 7. d3 Nh5 8. Qc2 Nc6 9. Nbd2 Be6 10. a3 h6 11. e3 Qd7 12. 0-0 Bh3 13. d4 Bxg2 14. Kxg2 exd4 15. exd4 Qg4 16. d5 Ne5 17. Nxe5 dxe5 18. f3 Qd7 19. Ne4 c6 20. Rad1 cxd5 21. Rxd5 Qe7 22. Rfd1 Rad8 23. Qd2 Rxd5 24. Qxd5 Kh7 25. c5 f5 26. Nd6 Rd8 27. Rd2 Qg5 28. Kf2 Nf6 29. h4 Qh5 30. Qxb7 Rd7 31. Qc6 e4 32. Bxf6 Qxf3+ 33. Kg1 Qxg3+ 34. Rg2 Qe3+ 35. Kh1 Qh3+ 36. Kg1 Qe3+ 1/2-1/2

[Event "Santa Barbara op"]
[Site "Santa Barbara"]
[Date "2023.02.11"]
[Round "3"]
[White "Solano Monge, Luis Guillermo"]
[Black "Guillen Murillo, Sergio Guillermo"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "1427"]
[BlackElo "1721"]
[PlyCount "98"]
[EventDate "2023.01.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d3 d6 5. Nc3 Na5 6. Bb3 Nxb3 7. axb3 Nf6 8. 0-0 Bg4 9. h3 Bh5 10. Bg5 c6 11. Bxf6 Bxf6 12. Qe2 0-0 13. b4 Re8 14. b5 d5 15. bxc6 bxc6 16. Nd1 Qb6 17. c3 a5 18. Qe3 Qb5 19. Qd2 Red8 20. Re1 dxe4 21. Rxe4 Bg6 22. c4 Qb6 23. Rg4 e4 24. Qe3 Qxe3 25. Nxe3 exf3 26. Ra2 fxg2 27. Kxg2 Rxd3 28. b4 a4 29. b5 cxb5 30. cxb5 Rd4 31. Rxd4 Bxd4 32. Nd5 Be4+ 33. Kg1 Bxd5 34. Rd2 a3 35. Rxd4 a2 36. Rd1 a1Q 37. Rxa1 Rxa1+ 38. Kh2 Rb1 39. Kg3 Rxb5 40. Kh2 Rb3 41. h4 h5 42. Kg1 Bf3 43. Kh2 Bg4 44. Kg1 Kh7 45. Kh2 Kg6 46. Kg1 Kf5 47. Kh2 Kf4 48. Kg2 Bf3+ 49. Kh2 Rb1 0-1

[Event "Santa Barbara op"]
[Site "Santa Barbara"]
[Date "2023.02.04"]
[Round "2"]
[White "Guillen Murillo, Sergio Guillermo"]
[Black "Chaves Solera, Milton"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "1721"]
[BlackElo "1504"]
[PlyCount "67"]
[EventDate "2023.01.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. Be2 d6 5. 0-0 Nc6 6. Re1 Nf6 7. d4 cxd4 8. cxd4 Nxe4 9. d5 Ne5 10. Qa4+ Bd7 11. Qxe4 0-0 12. Nxe5 Bxe5 13. Qe3 Qa5 14. Qd2 Qc5 15. Nc3 Rac8 16. Ne4 Qb6 17. Qh6 Bg7 18. Qh4 Qd4 19. Rd1 Qe5 20. Qf4 Qxf4 21. Bxf4 Bxb2 22. Rab1 Bg7 23. Rxb7 Ba4 24. Rf1 Bc2 25. Rxe7 Bxe4 26. Rxe4 Rc2 27. a4 Rfc8 28. Bb5 f5 29. Re6 Bd4 30. Be3 Bc5 31. Bxc5 dxc5 32. d6 Kf7 33. d7 Rd8 34. Re8 1-0

[Event "Santa Barbara op"]
[Site "Santa Barbara"]
[Date "2023.01.28"]
[Round "1"]
[White "Campos Sanchez, Roberto"]
[Black "Guillen Murillo, Sergio Guillermo"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1971"]
[BlackElo "1721"]
[PlyCount "44"]
[EventDate "2023.01.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bg5 h6 6. Bf4 0-0 7. Qd2 Kh7 8. 0-0-0 Nh5 9. Be3 c6 10. h3 Nf6 11. g4 Nfd7 12. h4 f6 13. Bd3 e5 14. Rhg1 exd4 15. Nxd4 Ne5 16. h5 g5 17. Qe2 Na6 18. Bxa6 bxa6 19. f4 Nf7 20. Nf5 Bxf5 21. gxf5 Kh8 22. Qxa6 Qb6 1-0

[Event "Balmaceda Segura Memorial op"]
[Site "Santa Barbara de Heredia"]
[Date "2022.06.25"]
[Round "6"]
[White "Incer Arias, Manuel"]
[Black "Guillen Murillo, Sergio Guillermo"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1755"]
[BlackElo "1739"]
[PlyCount "116"]
[EventDate "2022.05.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 c6 3. Nc3 Nf6 4. Bxf6 exf6 5. e3 Bb4 6. Bd3 d5 7. Qf3 g6 8. h4 h5 9. Nge2 Nd7 10. Nf4 Nf8 11. Nfe2 Qe7 12. a3 Ba5 13. g3 Ne6 14. 0-0 Bc7 15. Nf4 Bxf4 16. gxf4 Bd7 17. Kh2 0-0-0 18. Rg1 Rhg8 19. Rg3 Rg7 20. Rag1 Rdg8 21. Qg2 Nc7 22. Be2 Ne8 23. Bf3 Be6 24. b4 a5 25. Rb1 g5 26. b5 gxh4 27. Rxg7 Rxg7 28. Qh3 Qxa3 29. Rb3 Qc1 30. Bd1 Qd2 31. Qf1 Nd6 32. bxc6 Nc4 33. Nb1 Qc1 34. cxb7+ Rxb7 35. Rxb7 Kxb7 36. Be2 Qxc2 37. Bxc4 Qxc4 38. Qe1 Qb4 39. Qc1 Bd7 40. Kh3 Qf8 41. Qg1 Be8 42. Kxh4 Qf7 43. Nc3 Kc7 44. f3 a4 45. Qc1 Kd8 46. Qa3 Qd7 47. Qf8 Qc6 48. Qb4 Kc7 49. Qe7+ Bd7 50. Qb4 Qc4 51. Qa5+ Kd6 52. Qb6+ Ke7 53. Qb2 Qf1 54. Nxd5+ Kf7 55. Kg3 h4+ 56. Kh2 Qxf3 57. Qg2 Qxg2+ 58. Kxg2 Bc6 0-1

[Event "Balmaceda Segura Memorial op"]
[Site "Santa Barbara de Heredia"]
[Date "2022.06.11"]
[Round "4"]
[White "Guillen Murillo, Sergio Guillermo"]
[Black "Quiros Cajina, Allan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1739"]
[BlackElo "1551"]
[PlyCount "75"]
[EventDate "2022.05.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. d3 e6 3. Nf3 Nc6 4. g3 Qc7 5. Bg2 Nf6 6. 0-0 b5 7. a4 b4 8. Re1 d6 9. Nbd2 Bb7 10. Nc4 a5 11. Bf4 Nh5 12. Bd2 Be7 13. b3 Nf6 14. h3 0-0 15. Bf4 Nd7 16. g4 Nd4 17. Nxd4 cxd4 18. Bg3 e5 19. Qe2 Nb6 20. Nd2 Rac8 21. Rac1 Qd8 22. f4 Bh4 23. Qf2 Bxg3 24. Qxg3 Rc5 25. Rf1 Qc7 26. Nc4 Nd7 27. g5 d5 28. exd5 Bxd5 29. Bxd5 Rxd5 30. f5 Nb6 31. f6 Nxc4 32. dxc4 Rd7 33. Rf5 e4 34. Qxc7 Rxc7 35. Re1 Re8 36. Rd5 gxf6 37. gxf6 Rc6 38. Rxe4 1-0

[Event "Balmaceda Segura Memorial op"]
[Site "Santa Barbara de Heredia"]
[Date "2022.06.04"]
[Round "3"]
[White "Guillen Murillo, Sergio Guillermo"]
[Black "Garro Cordero, Felipe"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1739"]
[BlackElo "1320"]
[PlyCount "81"]
[EventDate "2022.05.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bb5 Nge7 5. 0-0 a6 6. Be2 g6 7. d4 cxd4 8. Nxd4 Bg7 9. Be3 0-0 10. Bf3 Ne5 11. Qe2 b5 12. Rad1 Bb7 13. Nb3 Qc7 14. Bc5 Nxf3+ 15. gxf3 Rfe8 16. Bd6 Qb6 17. Qd2 Rac8 18. Qg5 h6 19. Qd2 Rc4 20. Rfe1 Nc6 21. Bf4 Nd4 22. Nxd4 Rxd4 23. Qc1 Kh7 24. Be3 Rxd1 25. Rxd1 Qc6 26. Qd2 d5 27. exd5 exd5 28. Bd4 Qc4 29. Kg2 b4 30. Nb1 Re2 31. Qf4 f5 32. c3 Rxb2 33. Re1 Bxd4 34. cxd4 Qc2 35. Re7+ Kg8 36. Qb8+ Bc8 37. Nd2 Kf8 38. Rc7 Qxc7 39. Qxc7 Be6 40. Nb3 Rxa2 41. Qc5+ 1-0

[Event "Balmaceda Segura Memorial op"]
[Site "Santa Barbara de Heredia"]
[Date "2022.05.28"]
[Round "2"]
[White "Bolanos Arguello, Alexis"]
[Black "Guillen Murillo, Sergio Guillermo"]
[Result "1-0"]
[ECO "B21"]
[BlackElo "1739"]
[PlyCount "69"]
[EventDate "2022.05.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. c3 d3 5. c4 g6 6. Nc3 Bg7 7. Bxd3 Nf6 8. 0-0 d6 9. h3 0-0 10. Be3 Bd7 11. a3 Ne8 12. Rc1 Qa5 13. Bd2 Qd8 14. b4 Rc8 15. b5 Ne5 16. Nxe5 Bxe5 17. Nd5 e6 18. Nc3 Qf6 19. a4 Ng7 20. Ne2 Nh5 21. Be3 b6 22. f4 Bb2 23. Rc2 Ba3 24. Bc1 Bc5+ 25. Kh2 a6 26. Bb2 Qe7 27. g4 Ng7 28. Ng3 a5 29. f5 Qg5 30. Rf3 e5 31. Bc1 Qh4 32. Rg2 Kh8 33. Nf1 Rg8 34. Ne3 Qe7 35. f6 1-0

[Event "Balmaceda Segura Memorial op"]
[Site "Santa Barbara de Heredia"]
[Date "2022.05.21"]
[Round "1"]
[White "Guillen Murillo, Sergio Guillermo"]
[Black "Bonilla Rodriguez, Andres"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1739"]
[BlackElo "1911"]
[PlyCount "60"]
[EventDate "2022.05.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 c5 5. d3 Be7 6. Nbd2 0-0 7. Re1 Nc6 8. e4 b5 9. a4 b4 10. b3 Bb7 11. Bb2 Qc7 12. Rc1 Rad8 13. Qe2 Rfe8 14. Nh4 g6 15. f4 dxe4 16. dxe4 Nd4 17. Bxd4 cxd4 18. h3 Nh5 19. Qg4 Qc3 20. Nf1 Ba6 21. Kh2 Kh8 22. f5 Bd6 23. e5 exf5 24. Nxf5 Bxe5 25. Kh1 Nf6 26. Qh4 Bxf1 27. Bxf1 Qf3+ 28. Bg2 Qxf5 29. Rf1 Qh5 30. Qxh5 Nxh5 0-1

[Event "San Jose Metropolitano op"]
[Site "San Jose"]
[Date "2019.12.26"]
[Round "2"]
[White "Murillo Tsijli, Alexis"]
[Black "Guillen Murillo, Sergio Guillermo"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2290"]
[BlackElo "1630"]
[PlyCount "107"]
[EventDate "2019.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d6 2. e4 c6 3. g3 g6 4. Bg2 Bg7 5. Ne2 Nf6 6. h3 0-0 7. 0-0 e5 8. a4 Re8 9. Nbc3 Nbd7 10. Be3 Qc7 11. a5 Nf8 12. f4 N6d7 13. dxe5 dxe5 14. f5 f6 15. g4 g5 16. Qe1 b6 17. axb6 Nxb6 18. b3 Rd8 19. Qf2 Bd7 20. Ra6 Nc8 21. Rfa1 Be8 22. Nc1 Nd7 23. Nd3 Bf8 24. Bf1 Ncb6 25. h4 h6 26. Ne2 Bf7 27. Ng3 Be7 28. hxg5 hxg5 29. Kg2 Rdc8 30. Nb2 c5 31. Na4 Qb7 32. Nxb6 axb6 33. Rxa8 Rxa8 34. Rxa8+ Qxa8 35. Bb5 Qb7 36. Qe2 Nb8 37. Bc4 Bd8 38. Be6 Qe7 39. Qc4 Nc6 40. c3 Bc7 41. b4 Bxe6 42. fxe6 Nd8 43. bxc5 bxc5 44. Nf5 Qxe6 45. Qxc5 Qd7 46. Qd5+ Qxd5 47. exd5 Kf7 48. Kf3 Nb7 49. c4 Nd6 50. Nxd6+ Bxd6 51. Ke4 Ba3 52. Kf5 Bb4 53. c5 Bc3 54. c6 1-0

