[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "7"]
[White "Deras, Gonzalo"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "B53"]
[PlyCount "56"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Honduras"]
[BlackTeam "Dominican Republic"]
[WhiteTeamCountry "HON"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Bd7 5. Nc3 Nc6 6. Qd1 Nf6 7. Bc4 Rc8 8. 0-0 g6 9. a3 Bg7 10. Bg5 0-0 11. Re1 Bg4 12. Be2 Be6 13. Qd2 Re8 14. Bh6 Bh8 15. Ng5 Bd7 16. h3 Qb6 17. Bc4 Ne5 18. Bb3 e6 19. Red1 Nc4 20. Bxc4 Rxc4 21. Rab1 Rc6 22. Qf4 Qc5 23. Rd3 Rec8 24. Rbd1 e5 25. Qf3 Be8 26. Rd5 Qb6 27. Rb5 Qc7 28. Rb3 Ra6 0-1

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "1"]
[White "Gamboa Gonzalez, Anibal"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A52"]
[PlyCount "76"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Venezuela"]
[BlackTeam "Dominican Republic"]
[WhiteTeamCountry "VEN"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. Be3 Bb4+ 6. Bd2 a5 7. f4 Ng6 8. Ne2 Nc6 9. Nbc3 0-0 10. Qc2 d6 11. g3 Bc5 12. a3 Bd7 13. Bg2 Re8 14. 0-0-0 a4 15. Nd5 Bg4 16. Bc3 Na5 17. Bxa5 Rxa5 18. h3 Bxe2 19. Qxe2 c6 20. Nc3 Qb8 21. Qd2 Ra8 22. Rhe1 Qa7 23. Re2 Rab8 24. h4 b5 25. cxb5 cxb5 26. Nd5 Ne7 27. Nb4 Rec8 28. Kb1 Bxb4 29. axb4 a3 30. e5 dxe5 31. Rxe5 axb2 32. Kxb2 Ng6 33. Rf5 Ne7 34. Rxb5 g6 35. Rxb8 Rxb8 36. Ra1 Qb6 37. Ra8 Rxa8 38. Bxa8 Nf5 1/2-1/2

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "8"]
[White "Giron, Abel"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "B23"]
[PlyCount "97"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Guatemala"]
[BlackTeam "Dominican Republic"]
[WhiteTeamCountry "GUA"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Nge2 a6 6. 0-0 Be7 7. d3 0-0 8. f4 d5 9. Bd2 d4 10. e5 dxc3 11. exf6 Bxf6 12. Bxc3 Nd4 13. Kh1 Rb8 14. Rb1 b5 15. Be1 Bb7 16. Bxb7 Rxb7 17. Nc3 Be7 18. Bf2 Rb6 19. Kg1 b4 20. Ne4 Qd5 21. Bxd4 Qxd4+ 22. Nf2 Rd8 23. Qf3 Rbd6 24. Rfe1 f5 25. b3 Bf6 26. Kg2 g6 27. Nh3 h6 28. Ng1 Qc3 29. Qd1 Qd4 30. Qf3 a5 31. Ne2 Qd5 32. Qxd5 exd5 33. Ng1 a4 34. Nf3 axb3 35. axb3 Bc3 36. Re2 Ra8 37. Rf1 Ra2 38. Rff2 Rb2 39. h4 Ra6 40. Re8+ Kh7 41. Re7+ Kg8 42. Re8+ Kh7 43. Rfe2 Raa2 44. R2e7+ Bg7 45. Ne1 c4 46. dxc4 dxc4 47. Rd7 cxb3 48. Ree7 bxc2 49. Rxg7+ 1/2-1/2

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "5"]
[White "Ramirez y Meza, Benito"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "B40"]
[PlyCount "51"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Mexico"]
[BlackTeam "Dominican Republic"]
[WhiteTeamCountry "MEX"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. Nbd2 a6 5. g3 g6 6. Bg2 Bg7 7. 0-0 Nge7 8. a4 0-0 9. Re1 e5 10. Nc4 d6 11. a5 Rb8 12. Be3 Be6 13. Qd2 f6 14. Ra3 Rf7 15. Rea1 Nd4 16. c3 Nxf3+ 17. Bxf3 d5 18. exd5 Bxd5 19. Bxd5 Qxd5 20. Nb6 Qc6 21. d4 Rd8 22. Rd1 exd4 23. cxd4 cxd4 24. Bxd4 Nf5 25. Rd3 Nxd4 26. Rxd4 1/2-1/2

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "3"]
[White "Salas, Narciso"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A52"]
[PlyCount "83"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Nicaragua"]
[BlackTeam "Dominican Republic"]
[WhiteTeamCountry "NCA"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. e4 Bb4+ 6. Bd2 Bc5 7. Be3 Nxe3 8. fxe3 Bxe3 9. Nc3 0-0 10. Nd5 Bh6 11. Be2 Re8 12. 0-0 Nxe5 13. Nxe5 Rxe5 14. Bh5 f6 15. Bf3 c6 16. Nc3 Qb6+ 17. Kh1 Qxb2 18. Qb3 Qxb3 19. axb3 Bd2 20. Ne2 d6 21. Rfd1 Bb4 22. Ra4 Bc5 23. b4 b5 24. bxc5 bxa4 25. cxd6 Bd7 26. Ra1 Ra5 27. h3 a3 28. Nd4 Rd8 29. Nb3 Ra4 30. Be2 a2 31. Nc5 Ra3 32. Nxd7 Rxd7 33. c5 Kf8 34. Bc4 Ke8 35. Bxa2 Kd8 36. e5 fxe5 37. Rf1 Ke8 38. Be6 Rb7 39. Bc8 Rab3 40. d7+ Rxd7 41. Bxd7+ Kxd7 42. Rf7+ 1/2-1/2

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "9"]
[White "Yabra, Frederico"]
[Black "Cuellar, Pablo"]
[Result "1/2-1/2"]
[ECO "E76"]
[PlyCount "60"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Dominican Republic"]
[BlackTeam "Panama"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "PAN"]

1. d4 Nf6 2. c4 g6 3. Nc3 d6 4. e4 Bg7 5. f4 c5 6. d5 0-0 7. Nf3 Na6 8. Be2 Nc7 9. 0-0 a6 10. a4 Rb8 11. a5 Bd7 12. e5 Nfe8 13. h3 b5 14. axb6 Rxb6 15. Ne4 f5 16. Nc3 e6 17. Qc2 Qb8 18. Rb1 a5 19. Be3 Na6 20. dxe6 Bxe6 21. Ng5 dxe5 22. Nxe6 Rxe6 23. fxe5 Bxe5 24. Bh6 Bg7 25. Bf4 Be5 26. Bh6 Bg7 27. Bxg7 Nxg7 28. Bf3 Re5 29. Rbd1 Ne6 30. Nb5 Nac7 1/2-1/2

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "4"]
[White "Yabra, Frederico"]
[Black "De Boer, Willem"]
[Result "1-0"]
[ECO "E76"]
[PlyCount "125"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Dominican Republic"]
[BlackTeam "Netherlands Antilles"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "AHO"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. d5 0-0 7. Nf3 e5 8. fxe5 dxe5 9. Bg5 h6 10. Bh4 Qa5 11. Qd2 Nbd7 12. Bd3 a6 13. 0-0 Re8 14. a3 Nh7 15. Rfb1 g5 16. Bf2 Bf8 17. b4 Qc7 18. Be3 f6 19. Qf2 Kg7 20. Nd2 Be7 21. Nb3 cxb4 22. axb4 Bxb4 23. Na4 Bf8 24. c5 Rb8 25. d6 Qd8 26. Nc3 Nxc5 27. Nxc5 Bxd6 28. Rd1 Qe7 29. Nd5 Qf8 30. Nb6 Bg4 31. Ncd7 Qf7 32. Nxb8 Bxd1 33. Nxa6 Bg4 34. Nc5 Nf8 35. Nd5 Bxc5 36. Bxc5 Nd7 37. Bd6 Be6 38. Ne3 Nb8 39. Bb5 Rd8 40. Bxb8 Rxb8 41. Nf5+ Bxf5 42. Qxf5 Qb3 43. Qd7+ Kg6 44. Qc7 Qe3+ 45. Kh1 Qd4 46. Rf1 Qd8 47. Qc4 Qd6 48. Ba4 Rd8 49. Bb3 Qe7 50. h3 b6 51. Rc1 h5 52. Qb5 Rd6 53. Rc8 Rd8 54. Rc6 Rd6 55. Rxb6 Rxb6 56. Qxb6 Qa3 57. Qe3 Qa1+ 58. Kh2 Qf1 59. Qf3 Qa6 60. Qf5+ Kg7 61. Qd7+ Kg6 62. Qf7+ Kh6 63. Qf8+ 1-0

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "6"]
[White "Yabra, Frederico"]
[Black "Mojica, Atilio"]
[Result "0-1"]
[ECO "A47"]
[PlyCount "60"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Dominican Republic"]
[BlackTeam "El Salvador"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "ESA"]

1. d4 e6 2. Nf3 Nf6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 Be7 6. e4 d5 7. e5 Nfd7 8. 0-0 c5 9. c3 Ba6 10. Qe2 Bxd3 11. Qxd3 cxd4 12. cxd4 Nc6 13. a3 0-0 14. Ne1 a5 15. f4 Nxd4 16. Kh1 Nc6 17. Nef3 Qc8 18. Nb3 Qa6 19. Qd1 Nc5 20. Nxc5 bxc5 21. g4 Rab8 22. f5 Qc4 23. Rg1 d4 24. Rg2 Qd5 25. Bf4 Rb3 26. Rf2 Bh4 27. Rf1 g5 28. Kg1 Rxf3 29. Rxf3 gxf4 30. Rxf4 Bg5 0-1

[Event "CACAC-chT 9th"]
[Site "Guatemala City"]
[Date "1971.??.??"]
[Round "2"]
[White "Yabra, Frederico"]
[Black "Potter, Adolphe"]
[Result "1-0"]
[ECO "D30"]
[PlyCount "122"]
[EventDate "1971.07.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GUA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Dominican Republic"]
[BlackTeam "US Virgin Islands"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "ISV"]

1. d4 d5 2. Nf3 e6 3. e3 Bd6 4. Bd3 f5 5. c4 c6 6. Nbd2 Nf6 7. b3 Nbd7 8. Bb2 Ne4 9. 0-0 0-0 10. Ne5 Nxe5 11. dxe5 Bc5 12. Rc1 b6 13. Nf3 a5 14. Nd4 Qc7 15. Qe2 Bxd4 16. exd4 c5 17. cxd5 exd5 18. f3 Ng5 19. Rc2 Ne6 20. Rfc1 Nf4 21. Qd2 Nxd3 22. Qxd3 Ba6 23. Qd2 c4 24. Ba3 Rfc8 25. bxc4 Bxc4 26. Qg5 Qd7 27. Bd6 b5 28. a3 Re8 29. Qd2 Re6 30. Rb1 f4 31. Rcb2 Qc6 32. Qxf4 Ba2 33. Rc1 Bc4 34. Qd2 Rxd6 35. exd6 Qxd6 36. Qc3 h6 37. Re1 Qg6 38. Re5 b4 39. axb4 axb4 40. Rxb4 Ra2 41. Rb2 Rxb2 42. Qxb2 Qd3 43. Qf2 Qd1+ 44. Re1 Qd3 45. Qe3 Qf5 46. h3 Kh7 47. Qe5 Qd3 48. f4 Bb3 49. Kh2 Qg6 50. f5 Qg5 51. Re3 Bc2 52. Rg3 Qf6 53. Qxf6 gxf6 54. Rg6 Bxf5 55. Rxf6 Be4 56. g3 Kg7 57. Rf4 Kg6 58. Kg1 h5 59. Kf2 Kg5 60. Rxe4 dxe4 61. Ke3 Kf5 1-0

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.25"]
[Round "11"]
[White "Yabra, Frederico"]
[Black "Bedros, Jacques"]
[Result "1/2-1/2"]
[ECO "D04"]
[PlyCount "45"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Lebanon"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "LBN"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Nbd2 e6 5. Bd3 Bd6 6. 0-0 0-0 7. c3 c6 8. h3 Bxf3 9. Qxf3 Nbd7 10. e4 dxe4 11. Nxe4 Nxe4 12. Qxe4 Nf6 13. Qe2 Qc7 14. c4 Bf4 15. Bxf4 Qxf4 16. Qe5 Qxe5 17. dxe5 Nd7 18. f4 Nc5 19. Bc2 Rfd8 20. Rad1 Kf8 21. Rxd8+ Rxd8 22. Rd1 Rxd1+ 23. Bxd1 1/2-1/2

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.24"]
[Round "10"]
[White "Higashi, Kohei"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A52"]
[PlyCount "71"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Japan"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "JPN"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. Bf4 Bb4+ 6. Nc3 Qe7 7. Qd5 f6 8. exf6 Nxf6 9. Qd3 d6 10. e3 Ne4 11. Qc2 g5 12. Bg3 Bf5 13. Bd3 h5 14. 0-0 Bxc3 15. Bxe4 Bxe4 16. Qxc3 0-0-0 17. h3 Bxf3 18. gxf3 g4 19. fxg4 hxg4 20. hxg4 Qh7 21. f3 Ne5 22. e4 Rdf8 23. Bxe5 dxe5 24. Kf2 Qxe4 25. Rae1 Qxg4 26. Rxe5 Rh2+ 27. Ke1 Qg6 28. Re4 Rd8 29. Qe5 Rdd2 30. Rh1 Rxb2 31. Qe8+ Qxe8 32. Rxe8+ Kd7 33. Rxh2 Rxh2 34. Re2 Rh4 35. Rc2 Kc6 36. Kd2 1/2-1/2

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.22"]
[Round "8"]
[White "Price, Harold"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "B73"]
[PlyCount "37"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "South Africa"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. 0-0 Bg7 8. Be3 0-0 9. Kh1 Bd7 10. f4 Qc8 11. f5 Nxd4 12. Bxd4 gxf5 13. Bxf6 Bxf6 14. Nd5 Bg5 15. Bd3 e6 16. Qh5 Qd8 17. exf5 exd5 18. f6 h6 19. h4 1-0

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.21"]
[Round "7"]
[White "Yabra, Frederico"]
[Black "Weber, Raymond"]
[Result "1-0"]
[ECO "D12"]
[PlyCount "49"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Luxembourg"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "LUX"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. c4 e6 5. Nc3 c6 6. Ne5 h6 7. Bd3 Bxd3 8. Qxd3 Be7 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 Bb4+ 12. Ke2 0-0 13. Rd1 Nd7 14. Kf1 Nxe5 15. Qxe5 Bd6 16. Qe4 Qf6 17. Rd3 c5 18. Be3 cxd4 19. Bxd4 Qf4 20. Qxb7 e5 21. Be3 Qxc4 22. Qd5 Qxd5 23. Rxd5 Bc7 24. Rc1 Rfc8 25. Rdc5 1-0

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.18"]
[Round "5"]
[White "Schaufelberger, Heinz"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "D64"]
[PlyCount "85"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Be7 5. Bg5 Nbd7 6. e3 c6 7. Rc1 0-0 8. Qc2 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. 0-0 Nxc3 12. Qxc3 b6 13. Rfd1 Bb7 14. Be2 c5 15. Qa3 Rfc8 16. Bb5 Bc6 17. Bxc6 Rxc6 18. h3 f5 19. Rc2 Rd6 20. Rdc1 e5 21. dxc5 Nxc5 22. b4 Rd3 23. Rc3 Rxc3 24. Qxc3 e4 25. bxc5 exf3 26. gxf3 bxc5 27. Qxc5 Qd7 28. Qc4+ Kf8 29. Qc5+ Kg8 30. Qc6 Rd8 31. Qxd7 Rxd7 32. Rc5 g6 33. Ra5 Kg7 34. Kg2 Kf6 35. f4 Ke6 36. Kg3 Kd6 37. f3 Kc6 38. e4 Kb6 39. Ra3 a5 40. Kh4 fxe4 41. fxe4 Re7 42. Re3 h6 43. Kg4 1-0

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.17"]
[Round "4"]
[White "Yabra, Frederico"]
[Black "Duraku, Esat"]
[Result "1/2-1/2"]
[ECO "E85"]
[PlyCount "61"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Albania"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "ALB"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Be3 e5 6. Nge2 Nf6 7. f3 0-0 8. d5 Ne7 9. Qd2 Ne8 10. g4 f5 11. gxf5 gxf5 12. Bh6 fxe4 13. fxe4 Ng6 14. 0-0-0 Bxh6 15. Qxh6 Qh4 16. Qxh4 Nxh4 17. Rg1+ Kh8 18. Rg3 Ng7 19. Bh3 Bxh3 20. Rxh3 Ng6 21. Rg1 Rf6 22. Rh6 Raf8 23. Ng3 a6 24. Nd1 Rf3 25. Re1 Nf4 26. Re3 Rxe3 27. Nxe3 Nd3+ 28. Kc2 Nf2 29. b4 Rf4 30. Ng2 Rf8 31. Ne3 1/2-1/2

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.16"]
[Round "3"]
[White "Yabra, Frederico"]
[Black "Ribeiro, Joao Mario"]
[Result "1/2-1/2"]
[ECO "D05"]
[PlyCount "52"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Portugal"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "POR"]

1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. Nbd2 Nc6 5. c3 e6 6. Bd3 Bd6 7. 0-0 0-0 8. Re1 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5 11. Qc2 Re8 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 f5 15. f4 fxe4 16. fxe5 Qd3 17. Qf2 b6 18. Bf4 Bg4 19. Re3 Qd5 20. Rg3 Bf5 21. h4 Rf8 22. h5 Rf7 23. Qe2 Rd8 24. Rf1 Qe6 25. h6 g6 26. Bg5 Rd3 1/2-1/2

[Event "Olympiad-19 Final D"]
[Site "Siegen"]
[Date "1970.09.15"]
[Round "2"]
[White "Mondragon, Jose"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "41"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Mexico"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "MEX"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 g6 5. Bc4 Bg7 6. d3 e6 7. f5 exf5 8. Ng5 Ne5 9. Bb5+ Bd7 10. exf5 h6 11. Nge4 Bc6 12. fxg6 fxg6 13. 0-0 Ne7 14. Nf6+ Bxf6 15. Rxf6 Qd7 16. Bxc6 Qxc6 17. Bf4 Nf7 18. Qe2 Rd8 19. Qe6 Rh7 20. Rxg6 Kf8 21. Rf1 1-0

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.13"]
[Round "9"]
[White "Dusclaux, Jacques"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "B73"]
[PlyCount "73"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Monaco"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "MNC"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 Nc6 8. 0-0 0-0 9. f3 Bd7 10. Qd2 Re8 11. Nb3 Rc8 12. Nd5 Nxd5 13. exd5 Ne5 14. Nd4 Nc4 15. Bxc4 Rxc4 16. b3 Rc8 17. c4 e5 18. dxe6 fxe6 19. Rad1 d5 20. cxd5 exd5 21. Rc1 Rxc1 22. Rxc1 Qh4 23. Qf2 Qe7 24. Nc2 Bf5 25. Bxa7 Rc8 26. Re1 Qd7 27. Nd4 Bd3 28. Qe3 Ba6 29. Bb6 Qd6 30. Qe6+ Qxe6 31. Nxe6 Bc3 32. Re3 Bd2 33. Re5 Rc1+ 34. Kf2 Rf1+ 35. Kg3 Be1+ 36. Kh3 Bd3 37. Nd4 1/2-1/2

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.12"]
[Round "8"]
[White "Yabra, Frederico"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "E67"]
[PlyCount "42"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Soviet Union"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "URS"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nbd7 7. Nc3 e5 8. dxe5 dxe5 9. Qc2 c6 10. Rd1 Qe7 11. e4 Ne8 12. Bg5 f6 13. Be3 f5 14. Qd2 Nb6 15. Bg5 Qf7 16. b3 f4 17. Bd8 h6 18. h3 fxg3 19. fxg3 Bxh3 20. Nxe5 Bxe5 21. Bxh3 Rxd8 0-1

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.10"]
[Round "6"]
[White "Yabra, Frederico"]
[Black "Kchouk, Bechir"]
[Result "0-1"]
[ECO "E67"]
[PlyCount "156"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Tunisia"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "TUN"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 c6 7. Nc3 Nbd7 8. Qc2 Nb6 9. b3 d5 10. c5 Nbd7 11. Bb2 e5 12. dxe5 Ng4 13. Rad1 Qe7 14. e4 dxe4 15. Nxe4 Ndxe5 16. Nd6 Be6 17. Rfe1 Nxf3+ 18. Bxf3 Nf6 19. b4 a6 20. Bg2 Qc7 21. Be5 Nd5 22. Ne8 Qxe5 23. Rxe5 Bxe5 24. Bxd5 Bxd5 25. Nd6 Bxd6 26. cxd6 Rad8 27. a3 Rxd6 28. f4 Re8 29. f5 Be4 30. Qe2 Rxd1+ 31. Qxd1 Bxf5 32. g4 Be6 33. g5 Bd5 34. Qg4 Re6 35. Qf4 b5 36. Qb8+ Kg7 37. Kf2 h6 38. h4 hxg5 39. hxg5 Re4 40. Qd8 Re6 41. Qb8 Re4 42. Qc7 Rh4 43. Kg3 Re4 44. Kf2 Rc4 45. Qe5+ Kf8 46. Qc7 Rc2+ 47. Kg1 Ra2 48. Qc8+ Ke7 49. Qxa6 Rg2+ 50. Kf1 Rxg5 51. Kf2 Re5 52. Qa7+ Kf6 53. Qb8 Kf5 54. Qh8 Re4 55. Qh3+ Ke5 56. Qc3+ Ke6 57. Qg7 Rg4 58. Qh8 f5 59. Qe8+ Kf6 60. Qh8+ Kg5 61. Qd8+ Kf4 62. Qd6+ Ke4 63. Qc5 Kd3 64. Qc1 Rg2+ 65. Kf1 Be4 66. a4 bxa4 67. Qd1+ Kc3 68. Qxa4 Rb2 69. Qa1 Kb3 70. Qa5 g5 71. Ke1 g4 72. Qe5 Rc2 73. Qd6 Rc3 74. Qb8 g3 75. b5 c5 76. Qg8+ c4 77. Qg5 g2 78. Kf2 Rc2+ 0-1

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.09"]
[Round "5"]
[White "Toran Albero, Roman"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "A14"]
[PlyCount "85"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Spain"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "DOM"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. b3 c5 7. Bb2 Nc6 8. e3 b6 9. Nc3 Bb7 10. cxd5 exd5 11. d4 Rb8 12. Rc1 cxd4 13. Nxd4 Nxd4 14. Qxd4 Bc5 15. Qh4 Ne4 16. Qg4 f5 17. Qe2 Nxc3 18. Bxc3 Qe7 19. Qd2 Rbd8 20. b4 d4 21. bxc5 Bxg2 22. Kxg2 dxc3 23. Qxc3 bxc5 24. Qc4+ Kh8 25. Qxc5 Qf7 26. Qc4 Qb7+ 27. Qc6 Qb4 28. Rfd1 h6 29. Rxd8 Rxd8 30. Rc4 Qb1 31. Rc2 Kh7 32. e4 fxe4 33. Qxe4+ Kh8 34. h4 Qb8 35. a4 Re8 36. Qc6 a5 37. Rc5 Qd8 38. Rd5 Qb8 39. Rxa5 Rf8 40. Rc5 Qb2 41. Rc2 Qb4 42. Re2 Qg4 43. Re8 1-0

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.08"]
[Round "4"]
[White "Vasquez, Julio E"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A51"]
[PlyCount "68"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Peru"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "PER"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Bb4+ 5. Nbd2 Nc6 6. a3 Bxd2+ 7. Bxd2 Qe7 8. Bf4 g5 9. Qd5 gxf4 10. Qxe4 d6 11. Qxf4 dxe5 12. Qg5 e4 13. Qg7 Rf8 14. Ng5 Bf5 15. Nxh7 Bxh7 16. Qxh7 0-0-0 17. g3 Nd4 18. 0-0-0 Qe5 19. Bg2 f5 20. e3 Nb3+ 21. Kc2 Nd2 22. Bh3 Kb8 23. Bf1 Rd6 24. Be2 Rfd8 25. Qh4 Qa5 26. Qe7 a6 27. h4 Qa4+ 28. Kc1 Qb3 29. h5 Qa2 30. Kc2 Qb3+ 31. Kc1 R8d7 32. Qe8+ Ka7 33. Qe5 Qa2 34. Kc2 Qb3+ 1/2-1/2

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.07"]
[Round "3"]
[White "Yabra, Frederico"]
[Black "Skalkotas, Nikolaos"]
[Result "1/2-1/2"]
[ECO "A37"]
[PlyCount "80"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Greece"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "GRE"]

1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 e5 6. 0-0 Nge7 7. d3 0-0 8. Bg5 h6 9. Bd2 d6 10. Rb1 Be6 11. e4 f5 12. Nd5 f4 13. Bc3 g5 14. gxf4 g4 15. Ne1 exf4 16. Bxg7 Kxg7 17. f3 g3 18. hxg3 fxg3 19. f4 Nd4 20. f5 Nxd5 21. cxd5 Bf7 22. f6+ Kh7 23. Nc2 Nxc2 24. Qxc2 Bg6 25. Qc3 Qd7 26. Rf4 Rf7 27. Rbf1 Re8 28. R1f3 Re5 29. Rxg3 Qa4 30. a3 Qd1+ 31. Rf1 Qh5 32. Qd2 Qh4 33. Rh3 Qg5 34. Qxg5 Rxg5 35. Kh2 Rh5 36. b4 b6 37. bxc5 bxc5 38. Rf4 Rg5 39. Bf3 h5 40. Bg2 Rb7 1/2-1/2

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.06"]
[Round "2"]
[White "Adamski, Jan"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "B37"]
[PlyCount "53"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "DOM"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 g6 6. Nc2 Bg7 7. e4 d6 8. Be2 Bd7 9. Be3 Rc8 10. f3 Qa5 11. 0-0 0-0 12. Qd2 Rfe8 13. Rfd1 a6 14. Rac1 Ne5 15. b4 Qd8 16. Na3 Bc6 17. h3 b6 18. Bf1 Bb7 19. Qf2 Nfd7 20. Na4 a5 21. Nxb6 axb4 22. Nxc8 bxa3 23. Nb6 Nxb6 24. Bxb6 Qa8 25. Bd4 Rc8 26. c5 d5 27. f4 1-0

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.05"]
[Round "1"]
[White "Olsen, Henry"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A51"]
[PlyCount "79"]
[EventDate "1970.09.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Faroe Islands"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "FAI"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Nc6 5. g3 Bc5 6. e3 Qe7 7. Bg2 Bb4+ 8. Nbd2 Nxe5 9. 0-0 Nxd2 10. Bxd2 Bxd2 11. Qxd2 Nxf3+ 12. Bxf3 d6 13. Rfd1 0-0 14. Qe2 Rb8 15. Bg2 Bd7 16. Qc2 Rfe8 17. Rd4 g6 18. Rad1 Bc6 19. e4 Qf6 20. b4 a6 21. a4 Re7 22. b5 Be8 23. c5 axb5 24. cxd6 cxd6 25. Rxd6 Re6 26. Rxe6 Qxe6 27. axb5 Bxb5 28. Qc7 Qe8 29. e5 Ba4 30. Re1 Bc6 31. e6 fxe6 32. Rxe6 Qxe6 33. Qxb8+ Kg7 34. Qc7+ Qf7 35. Qe5+ Qf6 36. Qc7+ Kh6 37. Bxc6 bxc6 38. Kf1 Qe6 39. Qf4+ Kg7 40. Qd4+ 1/2-1/2

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "5"]
[White "Cobo Arteaga, Eldis"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "A92"]
[PlyCount "86"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 Ne4 7. Nbd2 f5 8. Ne5 c6 9. Qc2 Nd7 10. Nd3 Qe8 11. Nf3 Ndf6 12. c5 Ng4 13. b4 Bd7 14. a4 Qh5 15. h3 Nh6 16. Nfe5 Rad8 17. b5 Bf6 18. Rb1 g5 19. bxc6 Bxc6 20. a5 Bxe5 21. Nxe5 f4 22. g4 Qe8 23. e3 Kh8 24. Re1 fxe3 25. Bxe3 Nf7 26. Nxf7+ Qxf7 27. f3 Nf6 28. Bxg5 Rde8 29. Qd2 Nd7 30. Bh6 Rg8 31. Bf4 Rgf8 32. Bd6 Rg8 33. Qf4 Qxf4 34. Bxf4 a6 35. Kf2 Rgf8 36. Bd6 Rf7 37. Bf1 Kg8 38. Kg3 Rg7 39. Bd3 Nf6 40. Be5 Rf7 41. Re3 Nd7 42. Bd6 Nf6 43. h4 h6 1-0

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "9"]
[White "Garcia Martinez, Silvino"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "B35"]
[PlyCount "56"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Bd7 7. Bb3 g6 8. Be3 Bg7 9. f3 0-0 10. Qd2 Qa5 11. 0-0 Rfc8 12. Nxc6 Bxc6 13. Bd4 Bb5 14. Qg5 e5 15. Nxb5 exd4 16. Bxf7+ Kh8 17. b4 Qb6 18. a4 a6 19. Na3 d3+ 20. Kh1 dxc2 21. Qd2 Qc7 22. Bc4 b5 23. e5 dxe5 24. Bb3 e4 25. Nxc2 exf3 26. gxf3 Nh5 27. axb5 axb5 28. Rxa8 Rxa8 1/2-1/2

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "1"]
[White "Hook, William"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "A51"]
[PlyCount "42"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. d5 Bc5 4. Nc3 e4 5. e3 d6 6. Qc2 Qe7 7. Nge2 Bf5 8. Ng3 Bg6 9. Bd2 Nbd7 10. Nb5 Rc8 11. Bc3 0-0 12. Nd4 c6 13. Ndf5 Bxf5 14. Nxf5 Qe8 15. b4 Bxb4 16. Bxb4 Qe5 17. Nd4 c5 18. Bc3 cxd4 19. exd4 Qe7 20. c5 dxc5 21. dxc5 Qxc5 0-1

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "16"]
[White "Iglesias, Alfredo"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A00"]
[PlyCount "66"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. g3 c5 2. Bg2 g6 3. d4 cxd4 4. Qxd4 Nf6 5. e4 Nc6 6. Qa4 Bg7 7. Ne2 0-0 8. 0-0 d6 9. c3 Bd7 10. Qc2 Rc8 11. h3 Qc7 12. Be3 Ne5 13. Nd2 Bb5 14. c4 Bxc4 15. Rfc1 Qd7 16. Nxc4 Nxc4 17. Bd4 Ne3 18. Qd3 Nxg2 19. Kxg2 a6 20. Rxc8 Rxc8 21. Rc1 Rxc1 22. Nxc1 Qc6 23. Bxf6 Bxf6 24. Qb1 Bg7 25. Kg1 f5 26. exf5 gxf5 27. Ne2 Qe4 28. Qd1 Be5 29. Qd2 Qb1+ 30. Kg2 Qxb2 31. Qg5+ Kf8 32. Qxf5+ Bf6 33. Nf4 Qxa2 1/2-1/2

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "14"]
[White "Jimenez Zerquera, Eleazar"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "D13"]
[PlyCount "49"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. Nc3 Bf5 5. cxd5 cxd5 6. Qb3 Bc8 7. Bf4 a6 8. Ne5 e6 9. e3 Be7 10. Bd3 Nbd7 11. Rc1 Nxe5 12. Bxe5 Bd6 13. Bxd6 Qxd6 14. Na4 Nd7 15. 0-0 0-0 16. Rc3 b5 17. Nc5 e5 18. Nxd7 Bxd7 19. Rc5 Be6 20. Qc3 exd4 21. exd4 Rac8 22. b4 Qf4 23. Re1 g6 24. Bf1 Rfe8 25. Rxe6 1-0

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "12"]
[White "Juarez, Carlos Eleodoro"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "B60"]
[PlyCount "54"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 g6 7. Bxf6 exf6 8. Bc4 Bg7 9. Ndb5 0-0 10. Qxd6 f5 11. 0-0-0 Qb6 12. f4 Rd8 13. Qc7 Qe3+ 14. Kb1 Be6 15. Bxe6 fxe6 16. exf5 Rdc8 17. Rhe1 Qc5 18. Qd6 Qxf5 19. Qxe6+ Qxe6 20. Rxe6 Rf8 21. g3 a6 22. Nc7 Rac8 23. N3d5 Rfd8 24. Rde1 Kf7 25. c4 a5 26. g4 Rd7 27. Ne8 Bh8 1-0

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "7"]
[White "Lamas Baliero, Pedro"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "A51"]
[PlyCount "87"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Nc6 5. Nbd2 Bb4 6. g3 Qe7 7. Bg2 Nxe5 8. Nxe5 Qxe5 9. 0-0 Nxd2 10. Bxd2 Qxb2 11. Bxb4 Qxb4 12. Qd4 0-0 13. Rab1 Qa4 14. Bxb7 Rb8 15. Bc6 Qxc6 16. Rxb8 Bb7 17. Rxf8+ Kxf8 18. f3 a5 19. Rb1 d6 20. Qa7 Ba6 21. Rb8+ Ke7 22. Qe3+ Kf6 23. h4 g6 24. Re8 Kg7 25. Qd4+ Kh6 26. g4 Qc5 27. Qxc5 dxc5 28. Ra8 Bxc4 29. Rxa5 Bxe2 30. Kf2 Bc4 31. a3 c6 32. Rxc5 Bb5 33. Ke3 Kg7 34. Rxb5 cxb5 35. Kd4 Kf6 36. Kc5 g5 37. h5 Ke5 38. Kxb5 f5 39. a4 fxg4 40. fxg4 Kf4 41. a5 Kxg4 42. a6 Kh3 43. a7 g4 44. a8Q 1-0

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "3"]
[White "Silva Sanchez, Carlos"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "D01"]
[PlyCount "59"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Nf3 c6 5. Qd3 g6 6. e4 dxe4 7. Nxe4 Nxe4 8. Qxe4 Bg7 9. Bd3 Nf6 10. Qh4 h6 11. Bxf6 Bxf6 12. Qf4 Qd6 13. Qe3 Be6 14. 0-0 0-0-0 15. Rfe1 g5 16. c3 Rhg8 17. Ne5 h5 18. Bc4 Bxc4 19. Nxc4 Qd5 20. Ne5 g4 21. Qf4 Rg5 22. Re4 Bxe5 23. dxe5 Qd2 24. Qxf7 Qxb2 25. Rf1 Qa3 26. Qe6+ Kb8 27. Rb4 Rg7 28. Rfb1 Qxc3 29. Rxb7+ Ka8 30. Qd7 1-0

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "8"]
[White "Yabra, Frederico"]
[Black "Hernandez Onna, Roman"]
[Result "0-1"]
[ECO "A36"]
[PlyCount "88"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 e6 6. e4 a6 7. d3 Nge7 8. Be3 Nd4 9. Qd2 d6 10. 0-0 0-0 11. Bh6 Nec6 12. Bxg7 Kxg7 13. Nxd4 cxd4 14. Ne2 e5 15. f4 b5 16. b3 Rb8 17. Rac1 Bd7 18. c5 Qe7 19. cxd6 Qxd6 20. fxe5 Nxe5 21. b4 Rbc8 22. a3 f6 23. Rfd1 Bg4 24. Rxc8 Rxc8 25. Rc1 Rxc1+ 26. Nxc1 Qc7 27. h3 Bxh3 28. Ne2 Qd7 29. Nf4 Bxg2 30. Kxg2 h5 31. Qf2 Qg4 32. Qe2 Qc8 33. Qf2 Ng4 34. Qa2 Ne3+ 35. Kh2 Qc2+ 36. Qxc2 Nxc2 37. Ne6+ Kf7 38. Nc7 Ke7 39. Nxa6 Kd6 40. Nc5 Nxa3 41. Nb3 Nc2 42. Kh3 g5 43. Kh2 Ke5 44. Nd2 g4 0-1

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "11"]
[White "Yabra, Frederico"]
[Black "Li Chen, Samuel"]
[Result "1/2-1/2"]
[ECO "E40"]
[PlyCount "120"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d5 6. e3 0-0 7. Qc2 b6 8. Nf3 Re8 9. Bd3 Bb7 10. 0-0 Nbd7 11. Ne5 dxc4 12. Nxc4 e5 13. Nd2 c5 14. Bb2 Rc8 15. dxe5 Nxe5 16. Bf5 Rc7 17. Rad1 Qe7 18. c4 h5 19. Rfe1 Neg4 20. h3 Nh6 21. Bd3 Rd7 22. e4 Red8 23. e5 Ne8 24. Nf1 Nc7 25. Ng3 Ne6 26. Bh7+ Kh8 27. Rxd7 Rxd7 28. Be4 h4 29. Nf1 Nd4 30. Qb1 Bc8 31. f4 Rd8 32. Ne3 Qe8 33. Bc3 Qe6 34. Qb2 Nhf5 35. Nxf5 Nxf5 36. Bxf5 Qxf5 37. e6 Bxe6 38. Bxg7+ Kh7 39. Bf6 Rg8 40. Bg5 Bxc4 41. Qf2 Rxg5 42. fxg5 Qxf2+ 43. Kxf2 Kg6 44. Re7 Be6 45. Rxa7 b5 46. Rb7 b4 47. axb4 cxb4 48. Rxb4 Kxg5 49. g3 Bxh3 50. gxh4+ Kh6 51. Kg3 Bf5 52. Kf4 Bc2 53. Rb8 Bd3 54. Rg8 Bg6 55. Ke5 Kh5 56. Rh8+ Kg4 57. Rh6 Bh5 58. Rh8 Bg6 59. Kf6 Bh5 60. Ke5 Bg6 1/2-1/2

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "13"]
[White "Yabra, Frederico"]
[Black "Moraza, Manuel"]
[Result "1-0"]
[ECO "D89"]
[PlyCount "69"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 0-0 9. 0-0 cxd4 10. cxd4 Nc6 11. Be3 Bg4 12. f3 Na5 13. Bd3 Be6 14. d5 Bxa1 15. Qxa1 f6 16. Bh6 Re8 17. Rd1 Bd7 18. Kh1 Rc8 19. Nf4 Qc7 20. Ne2 Ba4 21. Bf4 Qc5 22. Rc1 Qa3 23. Qd4 Rxc1+ 24. Bxc1 Qxa2 25. d6 exd6 26. Qxf6 Qe6 27. Qc3 b6 28. Bb2 Qe5 29. Qa3 Qc5 30. Qxa4 Rc8 31. Qd7 Qc7 32. Qe6+ Kf8 33. Qf6+ Qf7 34. Qxd6+ Kg8 35. Qe5 1-0

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "2"]
[White "Yabra, Frederico"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "71"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. Nbd2 Bg7 4. e4 d6 5. Bd3 0-0 6. 0-0 Nc6 7. c3 e5 8. dxe5 dxe5 9. Nc4 Bg4 10. Bg5 h6 11. Bh4 g5 12. Bg3 Nh5 13. h3 Nxg3 14. fxg3 Be6 15. Ne3 Qe7 16. Qe2 Rad8 17. Kh1 Rd7 18. Nh2 Rfd8 19. Rad1 Bxa2 20. Nd5 Bxd5 21. exd5 Rxd5 22. Qe4 R8d6 23. Ng4 Qd7 24. Qh7+ Kf8 25. Rf3 e4 26. Qxe4 Ne5 27. Nxe5 Bxe5 28. Rdf1 f6 29. Bc4 Rc5 30. Bb3 Qg7 31. Qxb7 Qd7 32. Qxa7 Qb5 33. Ba4 Ra6 34. Rxf6+ Bxf6 35. Rxf6+ Kg7 36. Qxa6 1-0

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "15"]
[White "Yabra, Frederico"]
[Black "Ramirez, Percy"]
[Result "0-1"]
[ECO "D05"]
[PlyCount "76"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. Bd3 Nc6 5. c3 Bg4 6. h3 Bh5 7. Nbd2 e6 8. 0-0 Rc8 9. Qe2 Be7 10. Rd1 cxd4 11. exd4 0-0 12. Nf1 Na5 13. Ng3 Bg6 14. Bxg6 hxg6 15. Ne5 Qb6 16. h4 Nc4 17. f4 Rc7 18. h5 gxh5 19. Nxh5 Rfc8 20. Rd3 g6 21. Nxf6+ Bxf6 22. Rh3 Re8 23. g4 Nd6 24. Qh2 Ne4 25. Rh7 Rec8 26. Be3 Ng5 27. fxg5 Bxe5 28. Bf4 Bxd4+ 29. Kh1 Bg7 30. Rxg7+ Kxg7 31. Qh6+ Kg8 32. Be5 f6 33. Qxg6+ Rg7 34. Qxf6 Rh7+ 35. Kg2 Qxb2+ 36. Kg3 Qh2+ 37. Kf3 Rh3+ 38. Bg3 Rxg3+ 0-1

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "6"]
[White "Yabra, Frederico"]
[Black "Rodriguez, JS."]
[Result "0-1"]
[ECO "A47"]
[PlyCount "64"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 Be7 6. e4 d6 7. Qe2 Nbd7 8. 0-0 c5 9. e5 Nd5 10. Ne4 dxe5 11. dxe5 Qc7 12. Ng3 Nb4 13. Be4 Nc6 14. Rd1 h6 15. b3 0-0-0 16. Bb2 g5 17. Bd3 g4 18. Ne1 Ndxe5 19. Ba6 Rxd1 20. Bxb7+ Kxb7 21. Rxd1 Rd8 22. Rxd8 Bxd8 23. Ne4 f5 24. Nd2 Qd6 25. Nd3 Nxd3 26. cxd3 Bc7 27. g3 Nb4 28. Nc4 Qd5 29. Bg7 h5 30. Ne5 Bxe5 31. Bxe5 Qxd3 32. Qxd3 Nxd3 0-1

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "4"]
[White "Yabra, Frederico"]
[Black "Rodriguez Vargas, Orestes"]
[Result "1/2-1/2"]
[ECO "D05"]
[PlyCount "81"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. e3 c5 4. Nbd2 Nf6 5. Bd3 c4 6. Be2 b5 7. c3 Bb7 8. Ne5 Nbd7 9. f4 Bd6 10. 0-0 Qc7 11. Bf3 Ne4 12. Bxe4 dxe4 13. a4 a6 14. axb5 axb5 15. Rxa8+ Bxa8 16. Qg4 0-0 17. Nxd7 Qxd7 18. f5 exf5 19. Qxf5 Qc6 20. Nb1 g6 21. Qf6 Qc7 22. h3 Be7 23. Qf2 f5 24. Na3 Qd7 25. Nc2 Bd5 26. Nb4 Qe6 27. Bd2 Ra8 28. Qf4 Bd6 29. Qg5 Kg7 30. g4 h6 31. gxf5 hxg5 32. fxe6 Bxe6 33. Kg2 g4 34. h4 Rh8 35. Be1 g5 36. Rh1 gxh4 37. Bxh4 Kg6 38. Nc6 Rh5 39. Be7 Rxh1 40. Kxh1 Bd5 41. Bxd6 1/2-1/2

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "17"]
[White "Yabra, Frederico"]
[Black "Villarroel, Geber"]
[Result "1/2-1/2"]
[ECO "D05"]
[PlyCount "26"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Nbd2 Bb7 5. Bd3 d5 6. 0-0 Be7 7. c3 0-0 8. Re1 Nbd7 9. e4 Nxe4 10. Nxe4 dxe4 11. Bxe4 Bxe4 12. Rxe4 Nf6 13. Re1 c5 1/2-1/2

[Event "Pan American-ch"]
[Site "Havana"]
[Date "1970.??.??"]
[Round "10"]
[White "Yepez, Trotzky"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "B57"]
[PlyCount "80"]
[EventDate "1970.07.15"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Bd7 7. 0-0 g6 8. Nd5 Bg7 9. Nb5 0-0 10. Nbc7 Rc8 11. Nxf6+ Bxf6 12. Nd5 Bg7 13. Bg5 Re8 14. c3 Ne5 15. Be2 Nc4 16. Qb3 b5 17. Rad1 a6 18. Rfe1 h6 19. Bc1 Qa5 20. a3 Be6 21. Qc2 Qd8 22. Qd3 Nb6 23. Qe3 Rc5 24. Qf3 Nxd5 25. exd5 Bf5 26. Be3 Rc8 27. g4 Bc2 28. Rd2 Bb3 29. Qh3 g5 30. Bf3 e5 31. Be4 a5 32. Qf3 Qf6 33. Qxf6 Bxf6 34. Bb6 Bd8 35. Bf5 Bxb6 36. Bxc8 Rxc8 37. Kg2 Rc5 38. f3 Kf8 39. Kg3 Ke7 40. Rf1 Rxd5 0-1

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.11.06"]
[Round "11"]
[White "Garrison, Lionel"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "A04"]
[PlyCount "58"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "British Virgin Islands"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "IVB"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 Nc6 3. d3 g6 4. Nbd2 Bg7 5. g3 e6 6. Bg2 Nge7 7. 0-0 0-0 8. Re1 Qc7 9. Nf1 Rb8 10. Qe2 d6 11. c3 b5 12. Nh4 b4 13. Bd2 bxc3 14. bxc3 Ba6 15. f4 Rb2 16. Qe3 Nd4 17. Rec1 Nc2 18. Rxc2 Rxc2 19. Nf3 Bxc3 20. Bxc3 Rxc3 21. Rd1 c4 22. Ne1 cxd3 23. Nxd3 Rc8 24. h4 Qc4 25. g4 Rxd3 26. Rxd3 Qxd3 27. Qxa7 Nc6 28. Qd7 Nd4 29. Qxd6 Nf3+ 0-1

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.11.04"]
[Round "9"]
[White "Yabra, Frederico"]
[Black "Rizk, John"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "77"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Lebanon"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "LBN"]

1. e3 e6 2. d4 d5 3. Bd3 Bd6 4. Nf3 h6 5. Nbd2 Nf6 6. 0-0 b6 7. e4 dxe4 8. Nxe4 Ba6 9. Nxd6+ Qxd6 10. c4 Bb7 11. h3 Nc6 12. Be3 0-0 13. Re1 Rfd8 14. Be2 Ne7 15. Qc1 Kh7 16. Ne5 Rf8 17. Bd3+ Be4 18. Bxe4+ Nxe4 19. Bf4 Qxd4 20. Qc2 Qxf2+ 21. Qxf2 Nxf2 22. Kxf2 Rad8 23. Rad1 Ng6 24. Rxd8 Rxd8 25. Nxg6 Kxg6 26. Bxc7 Rc8 27. Be5 Rxc4 28. Bc3 a6 29. Re3 Kh7 30. Rd3 b5 31. Rd4 Rc6 32. Rg4 g5 33. a3 Kg6 34. Rd4 f6 35. Bb4 e5 36. Rd6 Rc2+ 37. Rd2 Rc6 38. b3 a5 39. Rd6 1-0

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.11.03"]
[Round "8"]
[White "Yabra, Frederico"]
[Black "Tan, Lian Seng"]
[Result "0-1"]
[ECO "A03"]
[PlyCount "78"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Singapore"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "SIN"]

1. e3 d5 2. f4 c6 3. Nf3 Bg4 4. b3 Nf6 5. Bb2 Nbd7 6. Be2 Bxf3 7. Bxf3 e6 8. 0-0 Be7 9. Qe2 Qc7 10. d4 0-0 11. Nd2 Rfd8 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 Bf6 15. Kh1 Nf8 16. c4 Bxd4 17. f5 Qe5 18. Bxd4 Rxd4 19. Rae1 exf5 20. Rxf5 Qd6 21. c5 Qd7 22. Re5 g6 23. Bf3 Rd8 24. h3 Qc7 25. Bg4 h5 26. Re7 Qg3 27. Bf3 R8d7 28. Re8 Rd2 29. Qe3 g5 30. Qe4 g4 31. Qe3 gxf3 32. Rxf8+ Kxf8 33. Qh6+ Qg7 34. Re8+ Kxe8 35. Qxg7 fxg2+ 36. Kg1 Re7 37. Qg3 Ree2 38. Qb8+ Rd8 39. Qxb7 Rd1+ 0-1

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.11.02"]
[Round "7"]
[White "Wyss, Roberto"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "A02"]
[PlyCount "50"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Costa Rica"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "CRI"]
[BlackTeamCountry "DOM"]

1. f4 e5 2. fxe5 Nc6 3. Nf3 d6 4. exd6 Bxd6 5. d4 Bg4 6. Bg5 f6 7. Bh4 Bxf3 8. gxf3 Nxd4 9. e4 Qd7 10. Bf2 Nc6 11. h4 Nge7 12. Nd2 0-0-0 13. Be2 Rhe8 14. c3 f5 15. Qc2 Bf4 16. Nf1 Kb8 17. Be3 Bxe3 18. Nxe3 Qd6 19. Nf1 fxe4 20. Rd1 Qf4 21. Rxd8+ Rxd8 22. fxe4 Ng6 23. Bc4 Nxh4 24. Bd5 Nf3+ 25. Ke2 Ncd4+ 0-1

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.10.31"]
[Round "6"]
[White "Araiza Munoz, Jose Joaquin"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "B24"]
[PlyCount "78"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Mexico"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "MEX"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. f4 Nge7 7. Nf3 0-0 8. 0-0 d5 9. e5 a6 10. Kh1 b5 11. Ne2 d4 12. a3 Bb7 13. Ng5 Nf5 14. Ne4 Qe7 15. Bd2 Rfd8 16. Qe1 Rd7 17. Ng1 Rad8 18. Nf3 c4 19. g4 Nh6 20. g5 Nf5 21. Bh3 cxd3 22. Bxf5 exf5 23. Nf6+ Bxf6 24. gxf6 Qf8 25. cxd3 Re8 26. Qh4 h5 27. Kg1 Qh6 28. Rac1 Nd8 29. Ng5 Ne6 30. Rc2 Nxg5 31. fxg5 Qh7 32. Bf4 Kh8 33. Rfc1 Qg8 34. Rc7 Red8 35. Rxd7 Rxd7 36. Qe1 Qe8 37. Qb4 Kg8 38. Qc5 Qe6 39. Rc2 h4 1/2-1/2

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.10.30"]
[Round "5"]
[White "Lantsias, Andreas"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "B73"]
[PlyCount "79"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Cyprus"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "CYP"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. 0-0 0-0 9. f4 Qc7 10. Bf3 a6 11. Rc1 Bd7 12. Qd2 Rac8 13. Nd5 Nxd5 14. exd5 Na5 15. b3 b5 16. c3 Nb7 17. Nc6 Bxc6 18. dxc6 Na5 19. Rc2 Nxc6 20. Rfc1 Na5 21. Qf2 Qd7 22. h4 Nb7 23. b4 d5 24. Bd4 Rc4 25. Be2 Bxd4 26. cxd4 Rxc2 27. Rxc2 Rc8 28. Rxc8+ Qxc8 29. Qe3 Qe6 30. Qf3 Nd6 31. g4 Qe4 32. Qxe4 Nxe4 33. Bd3 Nd6 34. Kf2 e6 35. Kf3 Kg7 36. Bc2 f6 37. a4 Kf7 38. axb5 axb5 39. Bb3 f5 40. g5 1/2-1/2

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.10.29"]
[Round "4"]
[White "Levy, Moises"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "A52"]
[PlyCount "74"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Paraguay"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "PAR"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. e3 Ngxe5 6. Nbd2 g6 7. Be2 Bg7 8. 0-0 0-0 9. Nxe5 Nxe5 10. f4 Nc6 11. Nf3 d6 12. Qc2 Re8 13. Bd2 Bf5 14. Qb3 Qe7 15. Rae1 a5 16. a4 b6 17. Bd1 Qe4 18. Ng5 Qd3 19. c5 Qxd2 20. Qxf7+ Kh8 21. Bb3 Re7 22. Qd5 Qxd5 23. Bxd5 Bd7 24. cxd6 cxd6 25. Rc1 Rc8 26. Nf7+ Rxf7 27. Bxf7 Bxb2 28. Rb1 Ba3 29. Rxb6 Bc5 30. Rb7 Bxe3+ 31. Kh1 Bf5 32. h3 Nd8 33. Rd7 Nxf7 34. Rxf7 d5 35. Re7 Be4 36. Rxe4 dxe4 37. f5 Rc1 0-1

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.10.28"]
[Round "3"]
[White "Gomez Antonio, Pedro"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "B73"]
[PlyCount "72"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Andorra"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "AND"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. 0-0 Bg7 8. Be3 0-0 9. h3 Bd7 10. a3 Rc8 11. Rb1 a6 12. f3 Ne5 13. Nd5 Nc4 14. Bxc4 Rxc4 15. b3 Nxd5 16. exd5 Rc3 17. Qd2 Qc7 18. Rf2 Rc8 19. Rc1 a5 20. a4 e5 21. dxe6 fxe6 22. Nb5 Bxb5 23. axb5 d5 24. b6 Qc6 25. Re2 e5 26. Qd1 d4 27. Bd2 d3 28. Re4 dxc2 29. Qf1 Rxb3 30. Qf2 Rb1 31. Qe3 Qxb6 32. Qxb6 Rxb6 33. Bxa5 Rb1 34. Bd2 Rd8 35. Rb4 Rxb4 36. Bxb4 Rd1+ 0-1

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.10.27"]
[Round "2"]
[White "Badilles, Glicerio"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "A04"]
[PlyCount "87"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Hong Kong"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "HKG"]
[BlackTeamCountry "DOM"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c3 Bg7 5. 0-0 e6 6. e4 Nge7 7. Re1 0-0 8. d4 cxd4 9. cxd4 d5 10. e5 Nf5 11. Nc3 a6 12. Na4 Bd7 13. b3 Rc8 14. Ba3 Re8 15. Bc5 b5 16. Nb6 Rb8 17. g4 Nfe7 18. Nxd7 Qxd7 19. Rc1 a5 20. Qd2 b4 21. Bf1 Na7 22. h4 Nb5 23. Qf4 Nc3 24. a4 Nc6 25. Bd3 h6 26. Kg2 Qd8 27. Bd6 Rb7 28. Ba6 Rb6 29. Bb5 Qd7 30. Bc5 Rbb8 31. Bd3 Qd8 32. Rh1 Rb7 33. h5 g5 34. Qe3 Bf8 35. Bxf8 Rxf8 36. Rh3 f6 37. Bb5 f5 38. gxf5 exf5 39. Bxc6 Rc7 40. e6 f4 41. Qe5 g4 42. Rh4 gxf3+ 43. Kxf3 Ne4 44. Bxd5 1-0

[Event "Olympiad-18 Final D"]
[Site "Lugano"]
[Date "1968.10.26"]
[Round "1"]
[White "Yabra, Frederico"]
[Black "Ferry, Roger"]
[Result "0-1"]
[ECO "D04"]
[PlyCount "76"]
[EventDate "1968.10.26"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "France"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "FRA"]

1. d4 d5 2. Nf3 Nf6 3. Nbd2 Bf5 4. e3 e6 5. Be2 h6 6. c4 c6 7. a3 Nbd7 8. c5 a5 9. b3 Be7 10. Bb2 0-0 11. 0-0 Qc7 12. Qc1 Ne4 13. Ne5 Nxd2 14. Qxd2 Nxe5 15. dxe5 Bxc5 16. Rac1 Qe7 17. Ra1 Rfc8 18. Bd3 Bxd3 19. Qxd3 b5 20. f4 Rc7 21. Kh1 Rd8 22. Rg1 d4 23. e4 f6 24. exf6 Qxf6 25. Raf1 Qe7 26. a4 bxa4 27. bxa4 Rb8 28. Bxd4 Qd6 29. Rd1 Rd7 30. f5 Bxd4 31. Rgf1 Rf8 32. Qc4 c5 33. Rf3 Re7 34. Rdf1 Kh8 35. g4 Qc6 36. Qc2 exf5 37. exf5 Re3 38. Qg2 Rxf3 0-1

[Event "Olympiad-18 Preliminaries C"]
[Site "Lugano"]
[Date "1968.10.24"]
[Round "7"]
[White "Yabra, Frederico"]
[Black "Adamski, Jan"]
[Result "0-1"]
[ECO "E68"]
[PlyCount "78"]
[EventDate "1968.10.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Poland"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "POL"]

1. Nf3 d6 2. d4 Nf6 3. c4 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 c6 7. Nc3 Nbd7 8. e4 e5 9. d5 Nc5 10. Qc2 cxd5 11. cxd5 a5 12. Bg5 Bd7 13. Rfe1 b5 14. Bxf6 Qxf6 15. b3 Bh6 16. a4 bxa4 17. bxa4 Rfc8 18. Nb5 Rab8 19. Reb1 Na6 20. Qe2 Nb4 21. Rb2 Rc5 22. Na7 Rb7 23. Nc6 Bxc6 24. dxc6 Rxc6 25. Ne1 Rbc7 26. h4 Rc3 27. Kh2 Kg7 28. h5 R7c5 29. Qd1 Qe6 30. Qe2 Bc1 31. Rbb1 Qf6 32. hxg6 hxg6 33. Qd1 Qxf2 34. Rxc1 Rc8 35. Nf3 Rh8+ 36. Nh4 Qxg3+ 37. Kg1 Rxh4 38. Rxc3 Qxc3 39. Rc1 Qe3+ 0-1

[Event "Olympiad-18 Preliminaries C"]
[Site "Lugano"]
[Date "1968.10.22"]
[Round "5"]
[White "Heyns, Anthon"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "A43"]
[PlyCount "69"]
[EventDate "1968.10.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "South Africa"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. d5 d6 5. Nc3 Nf6 6. Be2 0-0 7. 0-0 a6 8. a4 Bg4 9. Nd2 Bxe2 10. Qxe2 Re8 11. Nc4 e6 12. Bg5 exd5 13. Nxd5 Nc6 14. c3 h6 15. Bxf6 Bxf6 16. Rfd1 Re6 17. Nf4 Be5 18. Nxe6 fxe6 19. Nxe5 Nxe5 20. f4 Nf7 21. Qg4 Qf6 22. f5 exf5 23. exf5 Qxf5 24. Qxf5 gxf5 25. Re1 c4 26. Re7 Rb8 27. Rf1 b5 28. Rxf5 Ne5 29. Rf6 bxa4 30. Rxd6 a3 31. bxa3 Rb1+ 32. Kf2 Nd3+ 33. Kg3 Kf8 34. Ra7 Nc5 35. Rd8# 1-0

[Event "Olympiad-18 Preliminaries C"]
[Site "Lugano"]
[Date "1968.10.21"]
[Round "4"]
[White "Ciric, Dragoljub M"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "B88"]
[PlyCount "123"]
[EventDate "1968.10.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Yugoslavia"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "YUG"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Bb3 a6 9. f4 Qc7 10. 0-0 Na5 11. Qf3 Nxb3 12. axb3 Bd7 13. f5 0-0 14. g4 d5 15. exd5 Nxd5 16. Nxd5 exd5 17. c3 Bd6 18. Rf2 Rfe8 19. f6 g6 20. Rg2 Re4 21. b4 Rae8 22. Bd2 Bxb4 23. cxb4 Rxd4 24. h3 Bc6 25. Qf2 Rde4 26. Rf1 Re2 27. Qxe2 Rxe2 28. Rxe2 Qg3+ 29. Rg2 Qxh3 30. b5 Bxb5 31. Rf4 Qd3 32. Kh2 d4 33. Rff2 Bc6 34. Rg1 Qe4 35. Kg3 h5 36. gxh5 Qe5+ 37. Rf4 Qxh5 38. Re1 Qd5 39. Rf2 Qb3+ 40. Kh4 Qxb2 41. Re7 d3 42. Kg3 Qd4 43. Rc7 Bd7 44. Rxb7 Qg4+ 45. Kh2 Bc6 46. Rb4 Qh5+ 47. Kg3 Bb5 48. Re4 Qh1 49. Re1 Qd5 50. Rc1 Bc6 51. Rb1 Bb7 52. Re1 Bc6 53. Rb1 Qd8 54. Bf4 Bb5 55. Rc1 Qa8 56. Rh2 Bc6 57. Rb1 Bb7 58. Rhb2 d2 59. Rxd2 Qc8 60. Rc1 Qe6 61. Rc7 Qe4 62. Rd8+ 1-0

[Event "Olympiad-18 Preliminaries C"]
[Site "Lugano"]
[Date "1968.10.20"]
[Round "3"]
[White "Freeman, Michael Joseph"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "A51"]
[PlyCount "95"]
[EventDate "1968.10.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Scotland"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "SCO"]
[BlackTeamCountry "DOM"]

1. d4 Nf6 2. c4 e5 3. d5 Bc5 4. Nc3 d6 5. e3 Bf5 6. Nge2 Nbd7 7. Ng3 Bg6 8. Bd3 a6 9. 0-0 0-0 10. Bxg6 fxg6 11. a3 a5 12. Rb1 Qe7 13. b4 axb4 14. axb4 Bb6 15. Nge4 Nxe4 16. Nxe4 Qh4 17. Qc2 Qe7 18. Bd2 Ra7 19. Ra1 Rxa1 20. Rxa1 Nf6 21. Rc1 Nxe4 22. Qxe4 Qf6 23. f3 Qe7 24. Qc2 c5 25. b5 Ra8 26. e4 g5 27. Qb2 h6 28. Ra1 Qd8 29. Ra3 Rxa3 30. Qxa3 Kh7 31. g3 Kg8 32. Kg2 Kh7 33. f4 gxf4 34. gxf4 exf4 35. Bxf4 Qf6 36. Qf3 Ba5 37. Bg3 Qg5 38. Qf5+ Qxf5 39. exf5 Bc7 40. Kf3 b6 41. Kg4 h5+ 42. Kxh5 Bb8 43. Bh4 Bc7 44. Be7 Kg8 45. Kg6 Kh8 46. Bf8 Kg8 47. Bxg7 Bd8 48. f6 1-0

[Event "Olympiad-18 Preliminaries C"]
[Site "Lugano"]
[Date "1968.10.19"]
[Round "2"]
[White "Schammo, Jean"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "B73"]
[PlyCount "60"]
[EventDate "1968.10.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Luxembourg"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "LUX"]
[BlackTeamCountry "DOM"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. 0-0 Bg7 8. Be3 0-0 9. h3 Bd7 10. Qd2 Re8 11. Rad1 Rc8 12. f4 Qc7 13. Bf3 a6 14. f5 Ne5 15. Be2 b5 16. a3 Nc4 17. Bxc4 Qxc4 18. Qd3 a5 19. Rf2 b4 20. Nb1 Qxd3 21. cxd3 Rc7 22. Rdf1 Rb7 23. Rc1 gxf5 24. Nxf5 Bxf5 25. Rxf5 bxa3 26. bxa3 Rb3 27. Rxa5 Rxd3 28. Bf4 Nxe4 29. Re1 d5 30. Ra7 Bd4+ 0-1

[Event "Olympiad-16 Final D"]
[Site "Tel Aviv"]
[Date "1964.11.17"]
[Round "7"]
[White "Salazar, H."]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "A95"]
[PlyCount "149"]
[EventDate "1964.11.10"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "DOM"]

1. c4 f5 2. d4 Nf6 3. Nc3 e6 4. Nf3 Be7 5. g3 0-0 6. Bg2 d5 7. b3 c6 8. 0-0 Nbd7 9. Bb2 Qe8 10. e3 Qh5 11. Ne2 Bd6 12. Nf4 Qe8 13. Nd3 b6 14. Nfe5 Bb7 15. Qe2 Rc8 16. Rac1 Qe7 17. Rfd1 Rc7 18. h4 Rfc8 19. Nxd7 Nxd7 20. Rd2 Nf6 21. c5 Bxg3 22. fxg3 Ba6 23. Qf2 Ng4 24. Qf4 h6 25. Nf2 g5 26. hxg5 hxg5 27. Qf3 Nf6 28. Bf1 Bb7 29. Bd3 g4 30. Qh1 Nh7 31. Kg2 Qg5 32. Re2 Nf6 33. Qh4 Qg6 34. Qh1 Rh7 35. Qg1 Rcc7 36. Kf1 Rh5 37. Ke1 Nh7 38. Kd2 Ng5 39. Kc2 Nf3 40. Qd1 b5 41. Kb1 Rch7 42. Bc2 Rh2 43. Nd3 Rh1 44. Nf4 Qf7 45. Qd3 R1h6 46. b4 Bc8 47. Rf2 Ng5 48. Qe2 Bd7 49. Nd3 Ne4 50. Ne5 Qe7 51. Bxe4 dxe4 52. Rg1 Be8 53. Bc3 Qg5 54. Rf4 Qe7 55. Rf2 Qg5 56. Bd2 Qe7 57. Rgg2 Rh3 58. Kb2 Qg5 59. Rf4 Qe7 60. Bc3 R3h6 61. d5 cxd5 62. Rgf2 Rg7 63. c6 a6 64. a4 Rh1 65. a5 Rgh7 66. Nxg4 d4 67. exd4 Bh5 68. c7 Qxc7 69. Nf6+ Kf7 70. Nxh5 R7xh5 71. Qxe4 Rd1 72. Qe2 Rhh1 73. Rxf5+ exf5 74. Rxf5+ Kg6 75. Qe6+ 1-0

[Event "Olympiad-16 Final D"]
[Site "Tel Aviv"]
[Date "1964.11.16"]
[Round "6"]
[White "Yabra, Frederico"]
[Black "Friedgood, David"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "114"]
[EventDate "1964.11.10"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "South Africa"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "RSA"]

1. d4 c5 2. d5 e6 3. c4 exd5 4. cxd5 d6 5. Nc3 g6 6. e4 Bg7 7. Bd3 Ne7 8. Bg5 h6 9. Be3 0-0 10. Qd2 Kh7 11. 0-0-0 Qa5 12. Nge2 f5 13. f3 fxe4 14. fxe4 Bg4 15. Rdf1 Nd7 16. h3 Bxe2 17. Bxe2 b5 18. Kb1 c4 19. Bd4 Ne5 20. a3 b4 21. axb4 Qxb4 22. Rxf8 Rxf8 23. Rc1 Nc8 24. Rc2 Nb6 25. Nd1 Qb5 26. Ne3 Rc8 27. h4 h5 28. g4 hxg4 29. Nxg4 Nxg4 30. Bxg7 Kxg7 31. Bxg4 Rf8 32. Qd4+ Kh7 33. h5 Rf1+ 34. Rc1 Rxc1+ 35. Kxc1 Qe8 36. hxg6+ Kxg6 37. Bf5+ Kf7 38. Be6+ Ke7 39. Qg7+ Kd8 40. Qxa7 Qb5 41. Qb8+ Ke7 42. Qc7+ Kf6 43. Qxd6 Qa5 44. Bd7+ Kg5 45. Qe5+ Kh6 46. Qf6+ Kh5 47. Qf5+ Kh6 48. Qf4+ Kg7 49. Qg3+ Kf6 50. Bc6 Qc5 51. Qf4+ Ke7 52. Qc7+ Kf6 53. e5+ Kf5 54. d6 Qg1+ 55. Kc2 Qf2+ 56. Kb1 Qe1+ 57. Ka2 Qa5+ 1/2-1/2

[Event "Olympiad-16 Final D"]
[Site "Tel Aviv"]
[Date "1964.11.14"]
[Round "5"]
[White "Fuller, Maxwell L"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "81"]
[EventDate "1964.11.10"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Australia"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "AUS"]
[BlackTeamCountry "DOM"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 Nbd7 7. Qc2 c6 8. Bd3 h6 9. Bh4 0-0 10. Nf3 Re8 11. 0-0-0 b5 12. g4 Ne4 13. Bxe7 Qxe7 14. Rdg1 a5 15. g5 h5 16. Bxe4 dxe4 17. Nd2 f5 18. gxf6 Nxf6 19. Rg5 Bg4 20. h3 b4 21. Na4 Nd7 22. Rg6 Be2 23. Rhg1 Bd3 24. Qb3+ Kh8 25. Qd1 Nf6 26. Rxg7 Qxg7 27. Rxg7 Kxg7 28. Nc5 Bb5 29. Qg1+ Kh6 30. Qg3 Nd5 31. Qd6+ Kh7 32. Ndxe4 Rg8 33. h4 Rg6 34. Ng5+ Kh6 35. Qd7 Nf6 36. Qf5 Bc4 37. Qf4 Nd5 38. Qf7 Rg7 39. Qe6+ Rg6 40. Qe5 Nf6 41. Nb7 1-0

[Event "Olympiad-16 Final D"]
[Site "Tel Aviv"]
[Date "1964.11.13"]
[Round "4"]
[White "Yabra, Frederico"]
[Black "Philippe, Georges"]
[Result "0-1"]
[ECO "C89"]
[PlyCount "54"]
[EventDate "1964.11.10"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Luxembourg"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "LUX"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Re1 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Qf3 Bg4 16. Qg2 Qh5 17. Bxd5 cxd5 18. Na3 Bf3 19. Qf1 f5 20. h3 Rf6 21. Kh2 f4 22. gxf4 Rxf4 23. Re6 Rf6+ 24. Rxd6 Rxd6 25. Nc2 Rg6 26. Ne1 Rf8 27. a4 Be2 0-1

[Event "Olympiad-16 Final D"]
[Site "Tel Aviv"]
[Date "1964.11.12"]
[Round "3"]
[White "Hadjikypris, Andreas"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A85"]
[PlyCount "60"]
[EventDate "1964.11.10"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Cyprus"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "CYP"]
[BlackTeamCountry "DOM"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Bg5 Be7 5. Nf3 0-0 6. e3 d5 7. Be2 c6 8. c5 Nbd7 9. 0-0 Ne4 10. Bxe7 Qxe7 11. Qc2 Rf6 12. Nxe4 fxe4 13. Ne5 Nxe5 14. dxe5 Rf5 15. f4 exf3 16. Rxf3 Rxf3 17. Bxf3 Bd7 18. b4 Rf8 19. Rf1 Qg5 20. Qc3 Rf5 21. e4 Rxe5 22. h4 Qf6 23. Be2 Rf5 24. Qg3 Rxf1+ 25. Bxf1 Qd4+ 26. Kh2 e5 27. Qg5 dxe4 28. Kh1 Kf8 29. Kh2 Kg8 30. Kh1 Kf8 1/2-1/2

[Event "Olympiad-16 Final D"]
[Site "Tel Aviv"]
[Date "1964.11.11"]
[Round "2"]
[White "Yabra, Frederico"]
[Black "Alvarez del Monte, Jose Luis"]
[Result "1/2-1/2"]
[ECO "D71"]
[PlyCount "74"]
[EventDate "1964.11.10"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Uruguay"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "URU"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. g3 c6 5. Bg2 Bg7 6. cxd5 Nxd5 7. Nxd5 cxd5 8. Nf3 Nc6 9. 0-0 0-0 10. Be3 Qb6 11. Qd2 Rd8 12. Rac1 Bf5 13. Ne5 Nxe5 14. dxe5 d4 15. Bf4 Be6 16. b3 Rd7 17. Rc2 Rad8 18. Be4 Bd5 19. Qd3 Qe6 20. Bxd5 Qxd5 21. e4 Qa5 22. Rfc1 e6 23. a4 h6 24. h4 Qa6 25. Rc4 Rc7 26. Kf1 Rdc8 27. Qxd4 Rxc4 28. Rxc4 Rxc4 29. Qxc4 Qxc4+ 30. bxc4 Kf8 31. Be3 a6 32. Bd4 Ke8 33. Ke2 Bf8 34. f4 h5 35. Kf3 Kd7 36. g4 Kc6 37. c5 Bxc5 1/2-1/2

[Event "Olympiad-16 Final D"]
[Site "Tel Aviv"]
[Date "1964.11.10"]
[Round "1"]
[White "Yabra, Frederico"]
[Black "Durao, Joaquim Manuel"]
[Result "1/2-1/2"]
[ECO "D05"]
[PlyCount "81"]
[EventDate "1964.11.10"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Portugal"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "POR"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. Bd3 Nc6 5. c3 Qc7 6. 0-0 e5 7. dxe5 Nxe5 8. Nxe5 Qxe5 9. Nd2 Bd7 10. e4 0-0-0 11. f4 Qc7 12. e5 Ng4 13. Nf3 f6 14. Re1 c4 15. e6 Bxe6 16. Rxe6 cxd3 17. Nd4 Nh6 18. Qxd3 Bc5 19. Bd2 Rhe8 20. Rae1 Rxe6 21. Rxe6 g6 22. Kh1 Qd7 23. Qe2 Bxd4 24. cxd4 Nf5 25. Bc3 Nd6 26. Re7 Qf5 27. Be1 Rd7 28. Rxd7 Kxd7 29. Qd2 Qe4 30. h3 Nc4 31. Qb4 Ke6 32. Bf2 Qb1+ 33. Bg1 Qxb2 34. Qf8 Qb5 35. Qg8+ Kf5 36. Qc8+ Ke4 37. Qe6+ Kd3 38. Qxf6 Kc2 39. f5 Qc6 40. Qg5 Kb2 41. f6 1/2-1/2

[Event "Olympiad-16 Preliminaries G"]
[Site "Tel Aviv"]
[Date "1964.11.09"]
[Round "7"]
[White "Ascencios, Julio"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "C79"]
[PlyCount "101"]
[EventDate "1964.11.03"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Peru"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "PER"]
[BlackTeamCountry "DOM"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. 0-0 b5 7. Bb3 d6 8. a4 Bg4 9. h3 Bh5 10. axb5 axb5 11. Rxa8 Qxa8 12. Qd3 Bxf3 13. Qxf3 Ne5 14. Qe2 Qc6 15. Re1 Nc4 16. c3 d3 17. Qxd3 Be7 18. Nd2 Ne5 19. Qe2 0-0 20. f4 Ned7 21. Nf3 d5 22. e5 Re8 23. Qd1 Bc5+ 24. Kh2 Bf2 25. exf6 Bxe1 26. Nxe1 Nxf6 27. Nf3 Qb6 28. Qd3 Ne4 29. Qxd5 Qg6 30. Ng5 Nxg5 31. fxg5 c6 32. Qd7 Rf8 33. Bf4 Ra8 34. h4 Rf8 35. Bg3 Qe4 36. h5 Qe2 37. Bd1 Qxb2 38. Bd6 Qd2 39. Qe7 Ra8 40. Bb3 Qf2 41. g6 hxg6 42. hxg6 Kh8 43. Bg3 Qd2 44. Qh4+ Qh6 45. Qxh6+ gxh6 46. Be5+ Kg8 47. gxf7+ Kf8 48. Bd6+ Kg7 49. f8Q+ Rxf8 50. Bxf8+ Kxf8 51. Kg3 1-0

[Event "Olympiad-16 Preliminaries G"]
[Site "Tel Aviv"]
[Date "1964.11.08"]
[Round "6"]
[White "Yabra, Frederico"]
[Black "Hadjikypris, Andreas"]
[Result "1-0"]
[ECO "E41"]
[PlyCount "66"]
[EventDate "1964.11.03"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Cyprus"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "CYP"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 cxd4 6. exd4 Bxc3+ 7. bxc3 0-0 8. Bd3 d6 9. Nf3 Nbd7 10. 0-0 b6 11. Bf4 Qe7 12. c5 bxc5 13. dxc5 Nxc5 14. Bxd6 Qd7 15. Bxc5 Rd8 16. Ne5 Qd5 17. Bc4 Qxd1 18. Raxd1 Bb7 19. Rxd8+ Rxd8 20. Bxa7 Ne4 21. Bd4 Rc8 22. Rb1 Ba8 23. Ba6 Rd8 24. f3 Nd6 25. Nd7 h6 26. Rb8 Rxb8 27. Nxb8 Kf8 28. Bc5 Ke7 29. Bb5 e5 30. a4 Ke6 31. c4 e4 32. Na6 Bb7 33. Nc7+ Ke5 1-0

[Event "Olympiad-16 Preliminaries G"]
[Site "Tel Aviv"]
[Date "1964.11.07"]
[Round "5"]
[White "Yabra, Frederico"]
[Black "Brinck Claussen, Bjorn"]
[Result "0-1"]
[ECO "E80"]
[PlyCount "52"]
[EventDate "1964.11.03"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Denmark"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "DEN"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 g6 6. f3 Bg7 7. g4 h5 8. g5 Nh7 9. h4 f6 10. Bh3 fxg5 11. Bxc8 Qxc8 12. hxg5 0-0 13. Nh3 Na6 14. Qe2 Nc7 15. Bd2 a6 16. 0-0-0 b5 17. Rdg1 bxc4 18. f4 exf4 19. Nxf4 Qe8 20. Nxh5 gxh5 21. Rxh5 Rf2 22. Qg4 Qg6 23. Rgh1 Nf6 24. Qh4 Qxh5 25. Qxh5 Nxh5 26. Rxh5 Nb5 0-1

[Event "Olympiad-16 Preliminaries G"]
[Site "Tel Aviv"]
[Date "1964.11.06"]
[Round "4"]
[White "Westerinen, Heikki MJ"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "D24"]
[PlyCount "39"]
[EventDate "1964.11.03"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Finland"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "FIN"]
[BlackTeamCountry "DOM"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 e6 5. e4 a6 6. Bxc4 Be7 7. Bd3 0-0 8. h4 c5 9. e5 Ng4 10. Bxh7+ Kh8 11. Bb1 Nc6 12. Qd3 f5 13. exf6 Nxf6 14. Bg5 Nb4 15. Qg6 Qe8 16. Ne5 Nbd5 17. Nxd5 exd5 18. Bxf6 Qxg6 19. Nxg6+ Kg8 20. Nxe7+ 1-0

[Event "Olympiad-16 Preliminaries G"]
[Site "Tel Aviv"]
[Date "1964.11.05"]
[Round "3"]
[White "Yabra, Frederico"]
[Black "Darga, Klaus"]
[Result "0-1"]
[ECO "A65"]
[PlyCount "64"]
[EventDate "1964.11.03"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "German Fed Rep"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bd3 Bg7 8. Nge2 0-0 9. 0-0 a6 10. a4 Nbd7 11. f4 Rb8 12. Ng3 Qc7 13. a5 c4 14. Bc2 b5 15. axb6 Rxb6 16. Na4 Rb5 17. Be3 Re8 18. Rb1 Nxd5 19. Bd4 Nb4 20. Bxg7 Kxg7 21. Nc3 Nxc2 22. Qxc2 Rb3 23. Nd5 Qc5+ 24. Kh1 Bb7 25. Rbd1 Rd3 26. Rxd3 cxd3 27. Qxd3 Bxd5 28. exd5 Nf6 29. Qxa6 h5 30. Qa1 h4 31. Rc1 Qf2 32. Rf1 hxg3 0-1

[Event "Olympiad-16 Preliminaries G"]
[Site "Tel Aviv"]
[Date "1964.11.04"]
[Round "2"]
[White "Vizantiadis, Lazaros"]
[Black "Yabra, Frederico"]
[Result "1/2-1/2"]
[ECO "A91"]
[PlyCount "60"]
[EventDate "1964.11.03"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Greece"]
[BlackTeam "Dominican Rep"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "DOM"]

1. c4 f5 2. Nc3 Nf6 3. d4 e6 4. g3 d5 5. Bg2 Be7 6. Bg5 c6 7. Nf3 Nbd7 8. cxd5 exd5 9. Bh3 Nb6 10. e3 Nc4 11. Qe2 0-0 12. 0-0 Ne4 13. Bxe7 Qxe7 14. Rac1 Kh8 15. b3 Ncd6 16. Ne5 Bd7 17. Nxe4 dxe4 18. Nxd7 Qxd7 19. Rfd1 Qe7 20. Rc5 Rad8 21. b4 a6 22. a4 Qf7 23. d5 cxd5 24. Rcxd5 Qe7 25. Qe1 g6 26. Bf1 Nf7 27. Qc3+ Kg8 28. Bc4 Rxd5 29. Bxd5 Qe8 30. Bxf7+ Qxf7 1/2-1/2

[Event "Olympiad-16 Preliminaries G"]
[Site "Tel Aviv"]
[Date "1964.11.03"]
[Round "1"]
[White "Yabra, Frederico"]
[Black "Tringov, Georgi Petrov"]
[Result "0-1"]
[ECO "E68"]
[PlyCount "90"]
[EventDate "1964.11.03"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ISR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Dominican Rep"]
[BlackTeam "Bulgaria"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "BUL"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. c4 Nbd7 7. Nc3 e5 8. e4 c6 9. dxe5 dxe5 10. h3 Qe7 11. Qc2 Nh5 12. Nh4 Nc5 13. Be3 Ne6 14. Rad1 Nhf4 15. Nf5 gxf5 16. gxf4 exf4 17. exf5 fxe3 18. fxe6 Bxe6 19. b3 exf2+ 20. Rxf2 Rad8 21. Ne2 Rxd1+ 22. Qxd1 Qg5 23. Rf3 Rd8 24. Qf1 Be5 25. Kh1 Qd2 26. Nc1 Qd1 27. Rd3 Qxf1+ 28. Bxf1 Re8 29. Rf3 Kg7 30. Nd3 Bd6 31. Nf2 f5 32. Bd3 Rf8 33. Bc2 h5 34. Kg2 h4 35. Nd3 Kf6 36. Nf2 Ke7 37. Kf1 Bg3 38. Bd3 a5 39. a4 f4 40. Ke2 Bxf2 41. Kxf2 Kd6 42. Bf1 Ke5 43. Rd3 Rg8 44. Bg2 Rg3 45. Rf3 Bf5 0-1

[Event "Caracas CACAC Team Ch 2nd"]
[Site "Caracas"]
[Date "1964.02.26"]
[Round "3"]
[White "Diaz Calderon, Salvador"]
[Black "Yabra, Frederico"]
[Result "1-0"]
[ECO "C48"]
[PlyCount "61"]
[EventDate "1964.02.23"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "VEN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Venezuela"]
[BlackTeam "Dominican Republic"]
[WhiteTeamCountry "VEN"]
[BlackTeamCountry "DOM"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. 0-0 0-0 6. d3 d6 7. Bg5 Bg4 8. Bxc6 bxc6 9. Qe2 Qe7 10. Nd1 Rab8 11. c3 Rfe8 12. b4 Bb6 13. Ne3 Qe6 14. Nxg4 Nxg4 15. Nh4 Nh6 16. h3 Kh8 17. Kh1 Ng8 18. f4 f6 19. f5 Qf7 20. Bd2 d5 21. Qg4 Ne7 22. Rf3 Rbd8 23. a4 a6 24. Raf1 Rd7 25. a5 Ba7 26. Bc1 Red8 27. Rg3 dxe4 28. Qxe4 Qd5 29. Qg4 Qf7 30. Rff3 Qb3 31. Qxg7# 1-0

[Event "Caracas CACAC Team Ch 2nd"]
[Site "Caracas"]
[Date "1964.02.25"]
[Round "2"]
[White "Yabra, Frederico"]
[Black "Castillo, Francisco"]
[Result "1/2-1/2"]
[ECO "C97"]
[PlyCount "64"]
[EventDate "1964.02.23"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "VEN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Dominican Republic"]
[BlackTeam "Nicaragua"]
[WhiteTeamCountry "DOM"]
[BlackTeamCountry "NCA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 Nd7 13. Nbd2 Nb6 14. g4 Bd7 15. Nf1 b4 16. Ng3 g6 17. Kh2 Rfc8 18. Rg1 bxc3 19. bxc3 Qd8 20. Bh6 Bf6 21. Qf1 Bb5 22. Qg2 Nd7 23. Nf5 Nf8 24. h4 Be2 25. Ng5 c4 26. Rae1 Bd3 27. Bd1 Rcb8 28. Qf3 Rb2 29. Ng3 Ra7 30. Bxf8 Bxg5 31. Bxd6 Qxd6 32. hxg5 Qe7 1/2-1/2

[Event "Caracas CACAC Team Ch 2nd"]
[Site "Caracas"]
[Date "1964.02.23"]
[Round "1"]
[White "Reissmann, Paul"]
[Black "Yabra, Frederico"]
[Result "0-1"]
[ECO "C80"]
[PlyCount "84"]
[EventDate "1964.02.23"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "VEN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Puerto Rico"]
[BlackTeam "Dominican Republic"]
[WhiteTeamCountry "PUR"]
[BlackTeamCountry "DOM"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Nxe5 Be7 8. Bxc6 dxc6 9. d4 Ne6 10. c3 0-0 11. Be3 Bd6 12. Nd2 f6 13. Nef3 b5 14. b4 f5 15. Nb3 f4 16. Bd2 Ng5 17. Na5 Bd7 18. Ne5 Bxe5 19. Rxe5 Qf6 20. Qh5 Ne6 21. Rae1 g6 22. Qd1 Rae8 23. Qb3 Kh8 24. f3 Nd8 25. c4 Kg8 26. cxb5+ Be6 27. Rxe6 Rxe6 28. bxa6 Qxd4+ 29. Kf1 Rfe8 30. Bc1 Kf8 31. Rd1 Re2 32. Be3 R8xe3 33. Nc4 Re8 34. Ne3 R2xe3 35. g3 Qe5 36. Qc4 fxg3 37. f4 gxh2 38. Kg2 Qb2+ 39. Kh1 Re1+ 40. Qf1 Rxf1+ 41. Rxf1 Re2 42. a7 Qc2 0-1

