[Event "LADAC corr"]
[Site "Argentina"]
[Date "1994.??.??"]
[Round "?"]
[White "Alvarez, Ruben"]
[Black "Romanelli, Gabriel Adrian"]
[Result "0-1"]
[ECO "B78"]
[PlyCount "54"]
[EventDate "1994.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. h4 Nc4 13. Bxc4 Rxc4 14. h5 Nxh5 15. g4 Nf6 16. Nde2 Re8 17. e5 Nxg4 18. fxg4 Bxg4 19. Nd5 Bxe5 20. Bg5 Rc5 21. Ne3 Qb6 22. Nc3 Rxc3 23. bxc3 Bxd1 24. Nxd1 Qc5 25. Rh3 h5 26. Qg2 b5 27. Rd3 e6 0-1

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1992.??.??"]
[Round "?"]
[White "Donato, Eduardo Fabian"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "B99"]
[PlyCount "57"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 0-0-0 Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. a3 Rb8 14. Bh3 b4 15. axb4 Rxb4 16. Bxe6 Nb6 17. Bxc8 Qxc8 18. Nf5 Qb8 19. Nxg7+ Kf8 20. Nf5 Rxb2 21. Qd3 d5 22. Nxe7 Nc4 23. Rdf1 Ra2 24. Nxa2 Qb2+ 25. Kd1 Kxe7 26. Nc3 Rc8 27. Ke2 Na3 28. Nd1 Qa2 29. Kf3 1-0

[Event "CUB-ch"]
[Site "Havana"]
[Date "1970.03.05"]
[Round "20"]
[White "Boudy Bueno, Julio Leonardo"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "A24"]
[PlyCount "67"]
[EventDate "1970.02.08"]
[EventType "tourn"]
[EventRounds "21"]
[EventCountry "CUB"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. d3 d6 6. e3 Nbd7 7. Nge2 e5 8. 0-0 Re8 9. Rb1 a5 10. a3 Nh5 11. b4 axb4 12. axb4 f5 13. f4 Ndf6 14. b5 exf4 15. gxf4 Ng4 16. Nd5 Ra2 17. h3 Qh4 18. Nb4 Rxe3 19. Bxe3 Nxe3 20. Qe1 Rxe2 21. Bd5+ Nxd5 22. Qxh4 Bf6 23. Qxh5 gxh5 24. Nxd5 Bd4+ 25. Kh1 c6 26. Rbe1 Rxe1 27. Rxe1 Kf7 28. Re7+ Kf8 29. Rc7 Be6 30. bxc6 bxc6 31. Rxc6 Bxd5+ 32. cxd5 Bc5 33. Rc7 Be3 34. Rxh7 1-0

[Event "CUB-ch"]
[Site "Havana"]
[Date "1970.02.25"]
[Round "14"]
[White "Buela Valdespino, Danilo"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "B77"]
[PlyCount "115"]
[EventDate "1970.02.08"]
[EventType "tourn"]
[EventRounds "21"]
[EventCountry "CUB"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 a5 10. 0-0 a4 11. a3 Qa5 12. Rad1 Bd7 13. Nd5 Qxd2 14. Rxd2 Nxd5 15. Bxd5 Nxd4 16. Bxd4 Bc6 17. Re1 Ra5 18. Ba2 Rc8 19. c3 Rb5 20. Ree2 Ra5 21. Kf2 Bb5 22. Re1 Bh6 23. Be3 Bxe3+ 24. Kxe3 Bc4 25. Bxc4 Rxc4 26. Kd3 Rac5 27. Kc2 Kg7 28. Red1 Kf6 29. Rd5 b5 30. Rxc5 Rxc5 31. b3 axb3+ 32. Kxb3 Ke5 33. Kb4 e6 34. Rc1 h5 35. c4 g5 36. g3 Rc8 37. f4+ gxf4 38. gxf4+ Kxe4 39. Re1+ Kxf4 40. cxb5 Rc2 41. Rb1 e5 42. b6 Rc8 43. b7 Rb8 44. Kc4 e4 45. Kd5 e3 46. Kxd6 e2 47. Kc7 Rxb7+ 48. Kxb7 Ke3 49. a4 f5 50. a5 f4 51. a6 f3 52. a7 f2 53. Rb3+ Kf4 54. a8Q e1Q 55. Qf8+ Ke5 56. Qc5+ Kf4 57. Qd6+ Ke4 58. Qe6+ 1-0

[Event "CUB-ch"]
[Site "Havana"]
[Date "1970.02.24"]
[Round "13"]
[White "Alvarez, Ruben"]
[Black "Barrero, LP."]
[Result "1-0"]
[ECO "C14"]
[PlyCount "99"]
[EventDate "1970.02.08"]
[EventType "tourn"]
[EventRounds "21"]
[EventCountry "CUB"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 a6 7. Qg4 f5 8. Qh5+ g6 9. Qh6 Bxg5 10. hxg5 Qe7 11. Nh3 Nc6 12. Nf4 Nf8 13. 0-0-0 Qf7 14. Rh3 Bd7 15. Re3 0-0-0 16. Na4 Nxe5 17. Rxe5 Bxa4 18. Rde1 Rd6 19. Qh3 Nd7 20. Rxe6 Rxe6 21. Rxe6 Nb6 22. Qe3 Re8 23. b3 Bd7 24. Rxe8+ Qxe8 25. Qxe8+ Bxe8 26. Kd2 Bf7 27. Ke3 Kd7 28. Nd3 Kd6 29. Nc5 Kc6 30. Kf4 Nd7 31. Nxd7 Kxd7 32. Ke5 Ke7 33. c4 c6 34. c5 Be6 35. b4 Bd7 36. Be2 Be6 37. a4 Bc8 38. b5 axb5 39. axb5 Bd7 40. bxc6 bxc6 41. Ba6 Be6 42. Bb7 Bd7 43. g3 Be8 44. Bc8 Bf7 45. f3 Bg8 46. Bb7 Kd7 47. Kf6 Kc7 48. Ba8 Kd7 49. f4 Kc7 50. Ke7 1-0

[Event "CUB-ch"]
[Site "Havana"]
[Date "1970.02.19"]
[Round "10"]
[White "Cobo Arteaga, Eldis"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "E95"]
[PlyCount "51"]
[EventDate "1970.02.08"]
[EventType "tourn"]
[EventRounds "21"]
[EventCountry "CUB"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nbd7 8. Re1 c6 9. Bf1 Re8 10. d5 c5 11. a3 Rf8 12. b4 Ne8 13. Rb1 h6 14. g3 f5 15. Nh4 Qf6 16. exf5 gxf5 17. Bh3 Nb6 18. Qe2 Bd7 19. a4 Rb8 20. a5 Nc8 21. bxc5 dxc5 22. Ne4 fxe4 23. Bxd7 Ne7 24. Be3 Qd6 25. Qg4 Nf6 26. Qe6+ 1-0

[Event "CUB-ch"]
[Site "Havana"]
[Date "1970.02.14"]
[Round "6"]
[White "Garcia Gonzales, Guillermo"]
[Black "Alvarez, Ruben"]
[Result "0-1"]
[ECO "B77"]
[PlyCount "64"]
[EventDate "1970.02.08"]
[EventType "tourn"]
[EventRounds "21"]
[EventCountry "CUB"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Bc4 Nc6 9. Qd2 a5 10. a4 Nb4 11. Nb3 Qc7 12. Bd3 Bd7 13. Qf2 d5 14. Bb6 Qb8 15. 0-0 dxe4 16. Bxe4 Nxe4 17. Nxe4 Bxb2 18. Rab1 Bg7 19. Bxa5 Nd5 20. Nbc5 Bc6 21. c4 Nf4 22. Bc3 Bxc3 23. Nxc3 Qe5 24. Rfc1 Rfd8 25. Kh1 Rd4 26. Nb5 Rdd8 27. Re1 Qg5 28. Rbd1 Nxg2 29. Rxd8+ Rxd8 30. Rg1 Rd2 31. Qf1 Qh5 32. Ne4 Ne3 0-1

[Event "CUB-ch"]
[Site "Havana"]
[Date "1970.02.13"]
[Round "5"]
[White "Alvarez, Ruben"]
[Black "Estevez Morales, Guillermo"]
[Result "0-1"]
[ECO "B57"]
[PlyCount "114"]
[EventDate "1970.02.08"]
[EventType "tourn"]
[EventRounds "21"]
[EventCountry "CUB"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 7. Nde2 e6 8. 0-0 Be7 9. Bb3 0-0 10. Be3 Qc7 11. Ng3 Na5 12. Nb5 Qb8 13. f4 b6 14. Nc3 b5 15. Nh5 Bb7 16. Bd4 Nxb3 17. axb3 b4 18. Bxf6 Bxf6 19. Nxf6+ gxf6 20. Qg4+ Kh8 21. Qh4 Qd8 22. Ra5 f5 23. Qxd8 Rfxd8 24. Na2 Bxe4 25. Nxb4 Rg8 26. g3 h5 27. Kf2 Rgc8 28. c3 Kg7 29. Rfa1 h4 30. Rxa7 hxg3+ 31. hxg3 Rxa7 32. Rxa7 Rh8 33. Rd7 Rh2+ 34. Ke3 Rxb2 35. Rxd6 Rg2 36. Kd4 Rxg3 37. Rb6 Kf6 38. Nc6 Rd3+ 39. Kc4 Rf3 40. Ne5 Rxf4 41. Nd7+ Kg5 42. Kc5 Rf1 43. c4 Rd1 44. Ne5 Kf6 45. Rd6 Rb1 46. Nd7+ Ke7 47. Ne5 Rxb3 48. Rd7+ Kf6 49. Kd4 Rb7 50. Rxb7 Bxb7 51. c5 Ke7 52. c6 Bc8 53. Kc5 f6 54. Ng6+ Kf7 55. Kd6 e5 56. Ne7 Be6 57. Nd5 Bxd5 0-1

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.09.01"]
[Round "9"]
[White "Holaszek, Hans"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "B63"]
[PlyCount "63"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 0-0 9. Nb3 a5 10. a4 Nb4 11. Bxf6 Bxf6 12. Qxd6 Bg5+ 13. Kb1 Qf6 14. Qb6 Bf4 15. Bb5 Be5 16. Qe3 b6 17. Nd4 Ba6 18. Bxa6 Nxa6 19. g3 Bxd4 20. Rxd4 e5 21. Rd2 Qe6 22. Rhd1 Qc4 23. Qd3 Rac8 24. Qxc4 Rxc4 25. Rd5 Re8 26. Rxe5 Kf8 27. Rxe8+ Kxe8 28. Rd6 Nc5 29. f3 Nxa4 30. Nxa4 Rxa4 31. Rxb6 Rd4 32. Kc1 1-0

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.30"]
[Round "8"]
[White "Alvarez, Ruben"]
[Black "Musil, Vojko"]
[Result "0-1"]
[ECO "D30"]
[PlyCount "92"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Be7 5. e3 h6 6. Bh4 0-0 7. Bd3 dxc4 8. Bxc4 c5 9. 0-0 a6 10. a4 Nc6 11. Nc3 cxd4 12. exd4 Qa5 13. Qe2 Rd8 14. Rfd1 Nb4 15. d5 exd5 16. Nxd5 Nbxd5 17. Bxd5 Nxd5 18. Bxe7 Re8 19. b4 Qc7 20. Rxd5 Rxe7 21. Qd2 Be6 22. Rd4 Rc8 23. h3 Ree8 24. Rd1 Qc3 25. Qf4 Qb3 26. Ne5 Qxa4 27. R1d3 Qa1+ 28. Kh2 Qc1 29. Qe4 f6 30. Ng4 Qc7+ 31. Rg3 Bxg4 32. Qxg4 Rcd8 33. Qg6 Qf7 34. Qd3 Rxd4 35. Qxd4 Qe7 36. Qd2 Kh8 37. Qf4 Qe5 38. Qg4 Re7 39. Qc8+ Kh7 40. Qd8 f5 41. Qd3 h5 42. h4 Qe4 43. Qd6 Qxh4+ 44. Rh3 Qf6 45. Rxh5+ Kg6 46. Qd1 Qe5+ 0-1

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.29"]
[Round "7"]
[White "Ostermeyer, Peter"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "E83"]
[PlyCount "85"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Bd3 e5 8. d5 Nd4 9. Nge2 Nh5 10. Qd2 c5 11. dxc6 bxc6 12. 0-0 f5 13. exf5 gxf5 14. Bb1 Nxe2+ 15. Nxe2 d5 16. cxd5 cxd5 17. Rd1 d4 18. Bf2 Ba6 19. Bd3 Bxd3 20. Qxd3 Qg5 21. Rac1 Kh8 22. Rc7 e4 23. fxe4 fxe4 24. Qxe4 Rae8 25. Qd3 Qe5 26. Rc2 Rxf2 27. Kxf2 Qxh2 28. Qh3 Rf8+ 29. Ke1 Qe5 30. Rxd4 Qf6 31. Qxh5 Qf2+ 32. Kd1 Bxd4 33. Qg4 Bc5 34. Rd2 Qe3 35. Kc2 Qe5 36. Nc3 Be3 37. Re2 Qc5 38. b4 Qb6 39. Kb3 Bh6 40. Re6 Rg8 41. Rxb6 Rxg4 42. Rxh6 Rxg2 43. b5 1-0

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.28"]
[Round "6"]
[White "Alvarez, Ruben"]
[Black "Boehlig, Heinz"]
[Result "1-0"]
[ECO "A70"]
[PlyCount "53"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Bd3 0-0 9. 0-0 Na6 10. h3 Nc7 11. a4 Re8 12. Bf4 b6 13. Re1 Nh5 14. Bh2 Bh6 15. e5 Bf4 16. g4 Bxh2+ 17. Kxh2 Nf4 18. Re4 dxe5 19. Nxe5 Ncxd5 20. Qf3 Be6 21. Bb5 Rf8 22. Rxf4 Nxc3 23. bxc3 Qc7 24. Re1 a6 25. Bc6 Rad8 26. Kg1 Kg7 27. g5 1-0

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.26"]
[Round "5"]
[White "Fuller, Maxwell L"]
[Black "Alvarez, Ruben"]
[Result "1/2-1/2"]
[ECO "E70"]
[PlyCount "63"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bg5 0-0 6. Qd2 c5 7. d5 Na6 8. Bd3 Nc7 9. f4 a6 10. a4 Qe8 11. Nf3 e6 12. 0-0 exd5 13. exd5 Bg4 14. Rae1 Qd7 15. f5 Rae8 16. Nh4 Rxe1 17. Qxe1 Re8 18. Qg3 Qe7 19. Qf4 h6 20. Bxf6 Qxf6 21. Qxg4 h5 22. Qg3 Qd4+ 23. Kh1 Re3 24. Rf3 Qxd3 25. fxg6 fxg6 26. Qf2 Rxf3 27. Qxf3 Qxf3 28. Nxf3 Bxc3 29. bxc3 b5 30. axb5 axb5 31. cxb5 Nxb5 32. c4 1/2-1/2

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.25"]
[Round "4"]
[White "Alvarez, Ruben"]
[Black "Litsberger, Rune"]
[Result "0-1"]
[ECO "C96"]
[PlyCount "86"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. Nbd2 cxd4 13. cxd4 Nc6 14. d5 Nb4 15. Bb1 a5 16. Nf1 Nb6 17. a3 Na6 18. Ng3 g6 19. Bh6 Re8 20. Nh2 Bd7 21. Qf3 Bg5 22. Bxg5 Qxg5 23. Ng4 Bxg4 24. hxg4 Nc5 25. Bd3 Nc4 26. Bxc4 bxc4 27. Rad1 Reb8 28. Qc3 Nd3 29. Re2 Qxg4 30. Rxd3 cxd3 31. Qxd3 a4 32. Qc4 Rc8 33. Qd3 Rc1+ 34. Nf1 Rac8 35. Rd2 Re1 36. Rc2 Rxc2 37. Qxc2 Qd1 38. Qc4 Qe2 39. Qxe2 Rxe2 40. Ne3 Rxe3 41. fxe3 h5 42. Kf2 Kf8 43. Kg3 g5 0-1

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.24"]
[Round "3"]
[White "Gat, Israel"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "E93"]
[PlyCount "89"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 0-0 6. Be2 e5 7. d5 Nbd7 8. Bg5 h6 9. Bh4 g5 10. Bg3 Nh5 11. Nd2 Nf4 12. 0-0 a5 13. Bg4 Nc5 14. f3 Nfd3 15. Qc2 f5 16. Bxf5 Bxf5 17. exf5 Qd7 18. f6 Rxf6 19. Nce4 Rf7 20. Nxc5 Nxc5 21. Ne4 Nxe4 22. fxe4 Raf8 23. Rxf7 Qxf7 24. Qe2 Qd7 25. Rf1 Rxf1+ 26. Kxf1 Qa4 27. b3 Qa3 28. Qc2 g4 29. Bh4 h5 30. Bd8 c5 31. Bc7 Bf8 32. Qd2 Kf7 33. Bxa5 Be7 34. Bc3 Ke8 35. Qb2 Qa6 36. Ke2 Kd7 37. Kd3 b5 38. Bd2 Qb7 39. Ke2 Qa6 40. Kd3 Qb7 41. Qc2 b4 42. Be3 Qa8 43. Qf2 Kd8 44. Bg5 Qa3 45. Qf8+ 1-0

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.22"]
[Round "2"]
[White "Alvarez, Ruben"]
[Black "Moe, Mogens"]
[Result "1/2-1/2"]
[ECO "D93"]
[PlyCount "69"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 0-0 6. Nf3 c6 7. Be2 Bg4 8. 0-0 Bxf3 9. Bxf3 dxc4 10. Qe2 Nd5 11. Bg3 Nb6 12. a4 a5 13. Ne4 N8d7 14. Nd2 e5 15. dxe5 Nxe5 16. Bxe5 Bxe5 17. Rfd1 Qc7 18. Nxc4 Nxc4 19. Qxc4 Bxb2 20. Rab1 Be5 21. g3 Rab8 22. Rd3 Rfd8 23. Rdb3 Bd6 24. Rd3 Be5 25. Rbd1 Rxd3 26. Rxd3 Rd8 27. Rxd8+ Qxd8 28. h4 h6 29. h5 g5 30. Qe4 Bf6 31. Be2 Qd2 32. Bd3 Kf8 33. Qf5 Ke7 34. Qe4+ Kf8 35. Qf5 1/2-1/2

[Event "World U20-ch07 Final B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.21"]
[Round "1"]
[White "Friedgood, David"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "A48"]
[PlyCount "63"]
[EventDate "1963.08.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 0-0 5. c3 d6 6. e4 Nbd7 7. Bc4 h6 8. Bh4 e5 9. 0-0 Qe7 10. Re1 Re8 11. Qc2 Nf8 12. Bxf6 Qxf6 13. d5 Qf4 14. Bb5 Re7 15. c4 g5 16. c5 Ng6 17. Re3 f5 18. Bd3 Qg4 19. h3 Qh5 20. exf5 Nf4 21. Be4 g4 22. hxg4 Qxg4 23. Nh2 Qg5 24. g3 Nh3+ 25. Kg2 Qh5 26. Rh1 Bf6 27. Nhf1 Nf4+ 28. gxf4 Rg7+ 29. Rg3 Rxg3+ 30. Nxg3 Qg4 31. fxe5 Bxe5 32. Qd1 1-0

[Event "World U20-ch07 Preliminaries B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.18"]
[Round "5"]
[White "Alvarez, Ruben"]
[Black "Moe, Mogens"]
[Result "1-0"]
[ECO "C79"]
[PlyCount "73"]
[EventDate "1963.08.13"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 d6 6. Bxc6+ bxc6 7. d4 Nd7 8. b3 f6 9. Bb2 g6 10. Nbd2 Bh6 11. Nc4 0-0 12. Bc1 Bg7 13. Na5 Nb8 14. Re1 Bg4 15. h3 Bxf3 16. Qxf3 exd4 17. Bb2 c5 18. e5 c6 19. Nb7 Qd7 20. exd6 Qxb7 21. Re7 Qc8 22. Rae1 Nd7 23. Qg4 Ne5 24. d7 Qc7 25. Qe6+ Nf7 26. Ba3 Qa5 27. Qxc6 Ne5 28. Qd5+ Kh8 29. b4 Qd8 30. Qe6 cxb4 31. Bxb4 Ra7 32. Re4 Rb7 33. Ba3 Qc7 34. Bd6 Qxc2 35. Rxg7 Rb1+ 36. Kh2 Ng4+ 37. hxg4 1-0

[Event "World U20-ch07 Preliminaries B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.16"]
[Round "4"]
[White "Zakharov, Alexander V"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "B63"]
[PlyCount "57"]
[EventDate "1963.08.13"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 0-0 9. Nb3 a5 10. a3 a4 11. Nd4 h6 12. Bxf6 Bxf6 13. Ndb5 Qb6 14. Nxd6 Rd8 15. Kb1 Qc5 16. f4 e5 17. Qd5 Qxd5 18. Rxd5 Be6 19. Rd1 exf4 20. Ncb5 Nd4 21. Nc7 Rab8 22. Nxe6 fxe6 23. Nb5 Rbc8 24. Nxd4 Rc5 25. e5 Bxe5 26. c3 Bxd4 27. cxd4 e5 28. dxc5 Rxd1+ 29. Kc2 1-0

[Event "World U20-ch07 Preliminaries B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.15"]
[Round "3"]
[White "Kovacs, Zoltan"]
[Black "Alvarez, Ruben"]
[Result "0-1"]
[ECO "E84"]
[PlyCount "66"]
[EventDate "1963.08.13"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Nge2 a6 8. Qd2 Rb8 9. Nc1 e5 10. d5 Nd4 11. Nb3 Nxb3 12. axb3 c5 13. b4 cxb4 14. Na4 b5 15. cxb5 axb5 16. Qxb4 Nh5 17. Nc3 f5 18. Bd3 Qh4+ 19. Bf2 Qg5 20. g3 Qf6 21. Be2 Bh6 22. Ra7 Qg5 23. Nd1 fxe4 24. fxe4 Bh3 25. Be3 Nf4 26. gxf4 exf4 27. Rg1 Qe5 28. Bd4 Qxe4 29. Nc3 Qc2 30. Bd1 Rbe8+ 31. Ne2 Rxe2+ 32. Bxe2 f3 33. Re7 fxe2 0-1

[Event "World U20-ch07 Preliminaries B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.14"]
[Round "2"]
[White "Alvarez, Ruben"]
[Black "Scholl, Eddie C"]
[Result "1-0"]
[ECO "D30"]
[PlyCount "55"]
[EventDate "1963.08.13"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Be7 5. e3 0-0 6. Bd3 h6 7. Bh4 dxc4 8. Bxc4 c5 9. 0-0 a6 10. dxc5 Qa5 11. Nbd2 Qxc5 12. Rc1 Qa7 13. e4 Nc6 14. e5 Nd5 15. Bxe7 Ncxe7 16. Ne4 b5 17. Bb3 Ng6 18. Qd2 Rd8 19. Rfd1 Bb7 20. Nc5 Ndf4 21. Qe3 Rxd1+ 22. Rxd1 Nxg2 23. Kxg2 Nh4+ 24. Kh3 Nxf3 25. Rd7 Ng5+ 26. Kh4 Rb8 27. Nxb7 Rxb7 28. Qxa7 1-0

[Event "World U20-ch07 Preliminaries B"]
[Site "Vrnjacka Banja "]
[Date "1963.08.13"]
[Round "1"]
[White "Tan, Lian Ann"]
[Black "Alvarez, Ruben"]
[Result "1-0"]
[ECO "E73"]
[PlyCount "79"]
[EventDate "1963.08.13"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 h6 7. Be3 e5 8. d5 c6 9. Qd2 cxd5 10. cxd5 Kh7 11. f3 Nbd7 12. Nh3 Nb6 13. Nf2 a6 14. g4 Ne8 15. Bd3 Bd7 16. h4 Rc8 17. b3 Na8 18. Rc1 Nec7 19. h5 g5 20. Rc2 Nb5 21. Bxb5 axb5 22. 0-0 Nc7 23. Ne2 Qf6 24. Kg2 Na6 25. Rfc1 Rxc2 26. Rxc2 Qd8 27. Nd3 Qb8 28. Qc1 Bf6 29. b4 Bd8 30. Ng3 Nc7 31. Kh3 Na8 32. Qg1 Bc7 33. Qc1 Rc8 34. Qg1 Bd8 35. Ba7 Bb6 36. Rxc8 Qxa7 37. Qc1 Be3 38. Rxa8 Qd4 39. Qc7 Qxd3 40. Qd8 1-0

