[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1989.02.25"]
[Round "7"]
[White "Mendez Bayon, David"]
[Black "Del Barrio Sanz, Eustasio"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "128"]
[EventDate "1989.01.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. exd5 exd5 5. Bd3 Bd6 6. Bg5 c6 7. Nf3 0-0 8. Ne5 Re8 9. f4 Qc7 10. 0-0 Ne4 11. Nxe4 dxe4 12. Bxe4 f5 13. Bd3 Be6 14. c4 Rf8 15. Qc2 Na6 16. a3 g6 17. Rae1 Rfe8 18. h4 Qg7 19. h5 Bxe5 20. Rxe5 Nc7 21. hxg6 hxg6 22. g4 Qd7 23. Qc3 Rf8 24. Rfe1 Rae8 25. R1e2 Rf7 26. Bc2 Rh7 27. Qd3 Qf7 28. gxf5 gxf5 29. Rg2 Rg7 30. Bb3 Bd7 31. d5 c5 32. Bd1 Qg6 33. Qe3 b6 34. Qg3 Rf8 35. Qf2 Ne8 36. Re7 Rff7 37. Rxf7 Qxf7 38. Bh6 Rxg2+ 39. Qxg2+ Kh8 40. Qg5 Qg8 41. Kf2 Qxg5 42. Bxg5 Kg7 43. Be7 Kf7 44. Bd8 Kg6 45. b4 Nd6 46. Be2 Ba4 47. Be7 Ne4+ 48. Ke3 Kf7 49. Bd8 Ke8 50. Bc7 Kd7 51. Bb8 a6 52. Bd3 Bb3 53. bxc5 bxc5 54. Be5 Ke7 55. Bxe4 fxe4 56. Kxe4 Bxc4 57. Bg7 Bb3 58. f5 Bd1 59. Ke5 Bh5 60. d6+ Kd7 61. Kd5 c4 62. Be5 Bg4 63. Ke4 Bh3 64. Kf4 c3 1/2-1/2

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1989.02.11"]
[Round "5"]
[White "Garcia Corada, Pedro"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "A04"]
[PlyCount "67"]
[EventDate "1989.01.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nf3 d6 2. b4 e5 3. Bb2 Bg4 4. c4 Nf6 5. Qb3 Be7 6. d4 Bxf3 7. Qxf3 Nc6 8. b5 Nxd4 9. Bxd4 exd4 10. Qxb7 0-0 11. g3 d5 12. Bg2 Bb4+ 13. Kf1 Rb8 14. Qxa7 dxc4 15. Qa4 Qe7 16. a3 Bc5 17. Qxc4 Ne4 18. Qd3 f5 19. Ra2 c6 20. a4 cxb5 21. axb5 Ra8 22. Rxa8 Rxa8 23. Bf3 Ra1 24. Kg2 Qe6 25. Nd2 Rxh1 26. Nxe4 fxe4 27. Bxe4 Ra1 28. Bxh7+ Kf7 29. Qf3+ Ke8 30. Qh5+ Kd8 31. Qxc5 Qd7 32. Bf5 Qb7+ 33. Kh3 Rd1 34. Qd6+ 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1989.02.04"]
[Round "4"]
[White "Mendez Bayon, David"]
[Black "Vila Dupla, Manuel"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "55"]
[EventDate "1989.01.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 b6 4. g3 Ba6 5. Bh3 c5 6. c3 Ne7 7. Bg5 Qc7 8. Ne2 Nbc6 9. Be3 Rc8 10. 0-0 cxd4 11. cxd4 h5 12. Nbc3 g6 13. Re1 Nf5 14. Nf4 Bh6 15. Bxf5 Bxf4 16. Bxf4 gxf5 17. h4 Qd7 18. Qa4 Na5 19. Qc2 Nc6 20. Red1 Nb4 21. Qb3 Nd3 22. Bg5 Qc6 23. Qa3 Nc5 24. dxc5 bxc5 25. Rac1 d4 26. Qa4 Kd7 27. b4 Bb7 28. bxc5 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1989.01.28"]
[Round "3"]
[White "Quintanilla Feijoo, Ramon"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "C31"]
[PlyCount "68"]
[EventDate "1989.01.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. exd5 c6 4. Nc3 cxd5 5. fxe5 d4 6. Ne4 Qd5 7. Bd3 Nc6 8. Nf3 Bg4 9. 0-0 Nxe5 10. Qe2 0-0-0 11. Ng3 Nxd3 12. Qxd3 Nf6 13. h3 Bd7 14. Kh1 Bb5 15. c4 Qxc4 16. Qxc4+ Bxc4 17. Re1 d3 18. b3 Bd5 19. Ne5 Bc5 20. Bb2 Bf2 21. Rec1+ Kb8 22. Nf5 Bb6 23. Ne7 Rhf8 24. Nxd5 Rxd5 25. Rc4 Bc7 26. Nf3 Re8 27. Rac1 Bd6 28. Bxf6 gxf6 29. Re1 Re6 30. Rec1 b5 31. Rc8+ Kb7 32. a4 Re2 33. Rh8 Bf4 34. Rxh7 Rxd2 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1989.01.21"]
[Round "2"]
[White "Mendez Bayon, David"]
[Black "Amigo Roman, Pedro"]
[Result "0-1"]
[ECO "D05"]
[PlyCount "68"]
[EventDate "1989.01.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Be7 5. Nbd2 0-0 6. 0-0 b6 7. Ne5 Bb7 8. Qf3 c5 9. b3 Nc6 10. a3 cxd4 11. Nxc6 Bxc6 12. exd4 b5 13. Qh3 Qb6 14. Nf3 Ne4 15. Be3 f5 16. Ne5 Be8 17. f3 Ng5 18. Bxg5 Qxd4+ 19. Kh1 Bxg5 20. Rae1 Bf4 21. Ng4 Bg6 22. Nf2 Qb6 23. g3 Bc7 24. Qg2 e5 25. Nd1 e4 26. fxe4 fxe4 27. Be2 Qc5 28. Bg4 d4 29. Be6+ Kh8 30. b4 Qe5 31. Bb3 Rad8 32. Rxf8+ Rxf8 33. Rf1 Rxf1+ 34. Qxf1 Qf5 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1989.01.14"]
[Round "1"]
[White "Perez Herrero, Gonzalo Mariano"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "73"]
[EventDate "1989.01.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Qe7 4. Bc4 Bg4 5. c3 c6 6. 0-0 g6 7. Bg5 Nf6 8. Nbd2 Nbd7 9. h3 Bxf3 10. Nxf3 h6 11. Bh4 g5 12. dxe5 Nxe5 13. Nxe5 dxe5 14. Bg3 h5 15. Qf3 g4 16. Qf5 Nd7 17. Rad1 0-0-0 18. Qxf7 gxh3 19. Qxe7 Bxe7 20. gxh3 h4 21. Bh2 Rh6 22. Be2 Bd6 23. Bg4 Kc7 24. f4 Rg8 25. Kh1 Rg7 26. Bxd7 exf4 27. Bf5 Rg3 28. Bxg3 hxg3 29. Kg2 Rf6 30. b4 Be5 31. Rd3 Kb6 32. a4 a5 33. bxa5+ Kxa5 34. Rb1 b6 35. Rd7 Ka6 36. Re7 Bxc3 37. Bc8+ 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1988.04.30"]
[Round "8"]
[White "Mendez Bayon, David"]
[Black "Quintanilla Feijoo, Ramon"]
[Result "1/2-1/2"]
[ECO "B86"]
[PlyCount "50"]
[EventDate "1988.02.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Be7 8. f4 Qc7 9. Qf3 0-0 10. g4 Nc6 11. Nde2 b5 12. g5 Nd7 13. a3 Bb7 14. 0-0 Rad8 15. Be3 Na5 16. Rac1 Nc4 17. Bxc4 Qxc4 18. Qh3 Bxe4 19. Nxe4 Qxe4 20. Nd4 Rc8 21. c3 d5 22. Rce1 Qg6 23. f5 exf5 24. Qxf5 Qxf5 25. Rxf5 Rfe8 1/2-1/2

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1988.04.14"]
[Round "6"]
[White "Santos Garcia, Fernando"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "103"]
[EventDate "1988.02.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. dxc5 Nbd7 5. cxd6 Nxe4 6. dxe7 Bxe7 7. Be3 0-0 8. Nd2 Ndc5 9. Nxe4 Nxe4 10. Qxd8 Rxd8 11. Nf3 Bc5 12. Nd4 f5 13. f3 Nd6 14. Nxf5 Re8 15. 0-0-0 Rxe3 16. Nxd6 Re7 17. Bc4+ Kf8 18. b4 Be3+ 19. Kb2 a5 20. a3 Bf4 21. g3 Bg5 22. Ne4 Bh6 23. Rd8+ Re8 24. Rhd1 axb4 25. axb4 Bh3 26. Rxa8 Rxa8 27. Bd5 Rd8 28. c4 b6 29. Nc3 g6 30. Be4 Rxd1 31. Nxd1 Bg7+ 32. Kb3 Ke7 33. g4 Bd4 34. Nc3 Bf1 35. Nd5+ Kd7 36. h4 Be2 37. Nc3 Bf1 38. h5 Bg2 39. hxg6 hxg6 40. Ne2 Be3 41. Kc2 Bf1 42. Kd3 Bh6 43. Bxg6 Kd6 44. Be4 Bg5 45. Bb7 Bc1 46. Kc2 Ba3 47. Kb3 Bxb4 48. Kxb4 Bxe2 49. Bd5 Bd1 50. Kb5 Kc7 51. g5 Bc2 52. Be4 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1988.04.09"]
[Round "5"]
[White "Mendez Bayon, David"]
[Black "Otero Martin, Enrique"]
[Result "1-0"]
[ECO "B46"]
[PlyCount "55"]
[EventDate "1988.02.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 a6 6. g3 Bb4 7. Bg2 Qa5 8. 0-0 Bxc3 9. Nxc6 bxc6 10. bxc3 Qxc3 11. Qd6 Qf6 12. e5 Qe7 13. Qd3 Qc5 14. Re1 Qa5 15. Ba3 Ne7 16. Rab1 Qd8 17. Be4 g6 18. Bc5 Qc7 19. Bb6 Qb8 20. f4 Nd5 21. Bc5 Qc7 22. c4 Qa5 23. Qd4 Ne7 24. Qd6 0-0 25. Qxe7 Bb7 26. Bb4 Qxa2 27. Qg5 Qxc4 28. Bxf8 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1988.03.26"]
[Round "4"]
[White "Fernandez, Sixto"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "57"]
[EventDate "1988.02.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Bd3 c6 6. Nge2 Bg4 7. f3 Bh5 8. Bf4 Qd8 9. 0-0 e6 10. Be5 Nbd7 11. Kh1 Bg6 12. f4 Ng4 13. Rf3 Bxd3 14. cxd3 f6 15. f5 fxe5 16. fxe6 Ndf6 17. Qb3 Qb6 18. Qa4 Be7 19. h3 h5 20. dxe5 Nxe5 21. Rf5 Nxd3 22. Raf1 0-0-0 23. Ne4 Qb4 24. Qxb4 Nxb4 25. Ng5 Rd5 26. Nf7 Re8 27. Nc3 Rxf5 28. Rxf5 Nd3 29. Rg5 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1988.03.12"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "Garcia Corada, Pedro"]
[Result "0-1"]
[ECO "D05"]
[PlyCount "74"]
[EventDate "1988.02.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 e6 3. Bd3 d5 4. Nf3 c5 5. b3 Nc6 6. 0-0 cxd4 7. exd4 Qc7 8. Bb2 Bd7 9. a3 a5 10. c4 Be7 11. Nc3 0-0 12. Nb5 Qf4 13. Re1 Rfd8 14. c5 Ne4 15. Bc1 Qg4 16. h3 Qg6 17. Bf4 e5 18. Bxe5 Bxh3 19. Bg3 Bg4 20. Qc2 f5 21. Bxe4 fxe4 22. Nh2 Bf5 23. Qd2 h5 24. Bc7 Rd7 25. b4 h4 26. Kh1 Rf8 27. Bf4 Qh5 28. bxa5 Bd8 29. Rg1 Bxa5 30. Qa2 g5 31. Bd6 Rff7 32. f3 exf3 33. gxf3 Be6 34. Raf1 Ne7 35. Qe2 Bh3 36. Rf2 Nf5 37. Qd2 Bxd2 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1988.03.05"]
[Round "2"]
[White "Amigo Roman, Pedro"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "A10"]
[PlyCount "69"]
[EventDate "1988.02.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nf3 d6 2. c4 e5 3. Nc3 f5 4. g3 Nf6 5. Bg2 Be7 6. 0-0 0-0 7. d4 e4 8. Ne1 c6 9. f3 d5 10. Qb3 Kh8 11. cxd5 cxd5 12. Bg5 Nc6 13. Bxf6 Bxf6 14. e3 Ne7 15. Rc1 g5 16. Nc2 a5 17. Na4 b5 18. Nc5 Bd7 19. f4 g4 20. Rf2 Rf7 21. Bf1 Rb8 22. Na3 b4 23. Nb1 Qe8 24. Nxd7 Qxd7 25. Rc5 a4 26. Qc2 Rb6 27. Rc7 Qe6 28. Qxa4 Nc6 29. Rxf7 Qxf7 30. Rc2 Qb7 31. Nd2 Nxd4 32. Qe8+ Kg7 33. exd4 Bxd4+ 34. Kh1 Bf2 35. Qe5+ 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1988.02.27"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Vila Dupla, Aurelio"]
[Result "0-1"]
[ECO "A08"]
[PlyCount "76"]
[EventDate "1988.02.27"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 g6 6. Bg2 Bg7 7. 0-0 Nge7 8. Re1 0-0 9. Qe2 Nd4 10. Nxd4 cxd4 11. Nf3 dxe4 12. Qxe4 Qd5 13. Ng5 h6 14. Qe2 Qa5 15. Ne4 Nd5 16. Nd6 Bd7 17. Nc4 Qc5 18. a4 Rfc8 19. b3 Nc3 20. Qg4 Bc6 21. Ba3 Qg5 22. Qxg5 hxg5 23. Bd6 Bxg2 24. Kxg2 Nd5 25. Be5 Nb4 26. Rac1 Rc6 27. Bxg7 Kxg7 28. Re5 b6 29. Rxg5 f6 30. Rb5 Nd5 31. a5 Nc3 32. Nxb6 axb6 33. Rxb6 Rxb6 34. axb6 Ra6 35. Ra1 Rxb6 36. Ra7+ Kh6 37. h4 Nd5 38. Ra4 Nb4 0-1

[Event "Valladolid San Mateo op 05th"]
[Site "Valladolid"]
[Date "1987.09.27"]
[Round "7"]
[White "Mendez Bayon, David"]
[Black "Fernandez de Pablo, Miguel Angel"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "62"]
[EventDate "1987.09.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. Bb5 d4 6. Nb1 Nf6 7. Qe2 Bd7 8. Bxc6 Bxc6 9. d3 Be7 10. 0-0 b5 11. Ne5 Bb7 12. a4 a6 13. axb5 axb5 14. Rxa8 Bxa8 15. Nd2 0-0 16. b3 Nd7 17. Nxd7 Qxd7 18. g4 f5 19. Re1 Bd6 20. exf5 exf5 21. gxf5 Qxf5 22. Ne4 Bxf4 23. Bxf4 Qxf4 24. Ng3 Bf3 25. Qe6+ Kh8 26. Qe7 h5 27. Qe5 Qd2 28. Re2 Bxe2 29. Qxe2 Qxe2 30. Nxe2 Ra8 31. Ng3 Ra2 0-1

[Event "Valladolid San Mateo op 05th"]
[Site "Valladolid"]
[Date "1987.09.26"]
[Round "6"]
[White "Rivera Kuzawka, Daniel"]
[Black "Mendez Bayon, David"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2290"]
[PlyCount "37"]
[EventDate "1987.09.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 Nb6 5. Be2 Qe7 6. 0-0 g6 7. Nc3 Nf6 8. a4 a5 9. dxe5 dxe5 10. b3 c6 11. Ba3 Qc7 12. Qc1 h6 13. Qb2 Bg4 14. Rad1 Bxf3 15. Bxf3 Be7 16. Bxe7 Qxe7 17. Qc1 Nbd7 18. Rfe1 Nc5 19. Qe3 1/2-1/2

[Event "Valladolid San Mateo op 05th"]
[Site "Valladolid"]
[Date "1987.09.25"]
[Round "5"]
[White "Mendez Bayon, David"]
[Black "Fernandez, Sixto"]
[Result "1-0"]
[ECO "C29"]
[PlyCount "45"]
[EventDate "1987.09.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Bc5 6. d4 Bb4 7. Bd3 Nxc3 8. bxc3 Bxc3+ 9. Bd2 Bxa1 10. Qxa1 Bg4 11. 0-0 0-0 12. Qc1 Nc6 13. Ng5 Nxd4 14. Qe1 h6 15. Nh7 c5 16. c3 c4 17. cxd4 cxd3 18. Nf6+ gxf6 19. exf6 Qb6 20. Qe3 Bh5 21. Kh1 Qe6 22. Qxh6 Qg4 23. Bg5 1-0

[Event "Valladolid San Mateo op 05th"]
[Site "Valladolid"]
[Date "1987.09.24"]
[Round "4"]
[White "Quintanilla Feijoo, Ramon"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "C31"]
[PlyCount "64"]
[EventDate "1987.09.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. exd5 c6 4. Qe2 cxd5 5. fxe5 Nc6 6. Nf3 Bg4 7. h3 Bxf3 8. Qxf3 Nd4 9. Qf4 Qb6 10. Bd3 Be7 11. c3 Rc8 12. Na3 Ne6 13. Qa4+ Kf8 14. Bf5 g6 15. Bxe6 fxe6 16. Rf1+ Kg7 17. d4 Bh4+ 18. Kd1 Ne7 19. Bf4 Qxb2 20. Rb1 Qxg2 21. Qb5 Rxc3 22. Rb2 Qxh3 23. Rh2 Qd3+ 24. Qxd3 Rxd3+ 25. Ke2 Rxa3 26. Rxh4 Nf5 27. Rhh1 Rxa2+ 28. Kf3 Rc8 29. Rc1 Nxd4+ 30. Kg4 h5+ 31. Kh3 Ra3+ 32. Kg2 Rac3 0-1

[Event "Valladolid San Mateo op 05th"]
[Site "Valladolid"]
[Date "1987.09.23"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "De los Mozos Lera, Santiago"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "64"]
[EventDate "1987.09.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. f4 d6 4. Nf3 Bg4 5. c3 Nf6 6. Bd3 c5 7. 0-0 0-0 8. Nbd2 cxd4 9. cxd4 Nc6 10. h3 Bd7 11. a3 Nh5 12. d5 Nd4 13. Nxd4 Bxd4+ 14. Kh2 Bg7 15. Nf3 Qb6 16. Qe2 Rac8 17. Rb1 e5 18. fxe5 dxe5 19. Be3 Qd6 20. Rbc1 f5 21. Rxc8 Bxc8 22. Rc1 fxe4 23. Bxe4 Nf4 24. Qd2 Rd8 25. Bc5 Qf6 26. Be3 g5 27. g3 Bxh3 28. gxf4 exf4 29. Bd4 Qh6 30. Bxg7 Kxg7 31. Qc3+ Kg8 32. Bxh7+ Kxh7 1/2-1/2

[Event "Valladolid San Mateo op 05th"]
[Site "Valladolid"]
[Date "1987.09.22"]
[Round "2"]
[White "Calzada Delgado, Fernando"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "A25"]
[PlyCount "78"]
[EventDate "1987.09.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 Bb4 6. Nge2 d6 7. d4 Bxc3+ 8. Nxc3 0-0 9. 0-0 Qe8 10. Nd5 Qf7 11. b3 e4 12. f3 Nxd5 13. cxd5 Qxd5 14. Bb2 Bd7 15. Qd2 Ne5 16. fxe4 fxe4 17. Qc2 Nf3+ 18. Rxf3 exf3 19. e4 Qh5 20. Bf1 Bh3 21. Bc4+ Kh8 22. Qf2 Rae8 23. e5 dxe5 24. dxe5 Be6 25. Bxe6 Rxe6 26. Rf1 b6 27. Qd2 Ree8 28. Qc3 Qg4 29. Qe3 Rd8 30. e6 Qh3 31. Bxg7+ Kg8 32. Qf2 Qxe6 33. Bxf8 Rxf8 34. Qd4 c5 35. Qd2 Rf5 36. Qd1 Qe3+ 37. Rf2 Qe4 38. Qd8+ Kg7 39. Qd7+ Rf7 0-1

[Event "Valladolid San Mateo op 05th"]
[Site "Valladolid"]
[Date "1987.09.21"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Recio Carrillo, Pablo Isaac"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "85"]
[EventDate "1987.09.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nc6 4. d4 cxd4 5. cxd4 e6 6. Nc3 a6 7. a3 Be7 8. Bd3 Nf6 9. 0-0 0-0 10. h3 Nd7 11. Be3 b5 12. b4 Bb7 13. Qb3 Rc8 14. Rfd1 Bf6 15. Rac1 Na7 16. Ne2 Nc6 17. Nh2 Bg5 18. f4 Be7 19. e5 dxe5 20. dxe5 Qc7 21. Nf3 Qb8 22. Bxh7+ Kxh7 23. Rxd7 Rfd8 24. Rcd1 Rxd7 25. Rxd7 Rc7 26. Rd1 Qc8 27. Qd3+ g6 28. Bb6 Ba8 29. Bxc7 Qxc7 30. Ng3 Kg7 31. Ne4 Nb8 32. Nd6 Qb6+ 33. Kh2 Bd5 34. Nc8 Qc7 35. Nxe7 Qxe7 36. Nd4 Qh4 37. g3 Qh5 38. Rc1 Bc4 39. Qd2 Nd7 40. g4 Qh6 41. a4 Nxe5 42. g5 Ng4+ 43. Kg3 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1987.04.11"]
[Round "7"]
[White "Mendez Bayon, David"]
[Black "Vazquez Escudero, Pedro Jesus"]
[Result "1-0"]
[ECO "C10"]
[PlyCount "35"]
[EventDate "1987.02.28"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 d5 4. exd5 exd5 5. d4 Nf6 6. Bg5 cxd4 7. Qxd4 Be7 8. Bb5+ Nc6 9. Ne5 Bd7 10. Bxc6 bxc6 11. 0-0 0-0 12. Rfe1 c5 13. Qf4 d4 14. Bxf6 gxf6 15. Nxd7 Qxd7 16. Ne4 f5 17. Ng3 Bd6 18. Qg5+ 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1987.04.04"]
[Round "6"]
[White "Medina, Jose A"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "C40"]
[PlyCount "82"]
[EventDate "1987.02.28"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Nc6 4. Nc4 fxe4 5. Nc3 Nf6 6. d3 d5 7. Nd2 Bf5 8. dxe4 dxe4 9. Bb5 Bc5 10. Nc4 0-0 11. Bxc6 bxc6 12. Be3 Qe7 13. 0-0 Rad8 14. Qe1 Bd6 15. Nxd6 cxd6 16. Rd1 Rfe8 17. Ne2 Ng4 18. Qc3 Ne5 19. Nd4 Bg4 20. Rd2 Rc8 21. h3 Bd7 22. f4 exf3 23. Nxf3 Nf7 24. Re1 Be6 25. Bf4 Qf8 26. Qa3 Bd5 27. Rde2 Rxe2 28. Rxe2 Re8 29. Rxe8 Qxe8 30. Qxa7 h6 31. b3 Bxf3 32. gxf3 Qe1+ 33. Kg2 Qe2+ 34. Qf2 Qa6 35. a4 d5 36. Qe3 Qc8 37. Bg3 Ng5 38. h4 Ne6 39. Qe5 Kf7 40. Qf5+ Kg8 41. Qe5 Kf7 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1987.03.22"]
[Round "5"]
[White "Otero Martin, Enrique"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "A23"]
[PlyCount "31"]
[EventDate "1987.02.28"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. d3 Nc6 7. Bg5 Be6 8. Nf3 d4 9. Ne4 Qa5+ 10. Bd2 Qb6 11. Nxf6+ gxf6 12. 0-0 Bb4 13. a3 Bxd2 14. Nxd2 Ne7 15. Nc4 Qa6 16. Bxb7 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1987.03.21"]
[Round "4"]
[White "Mendez Bayon, David"]
[Black "Vila Dupla, Manuel"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "61"]
[EventDate "1987.02.28"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 e6 2. Nc3 Nf6 3. e4 d5 4. Bg5 Bb4 5. exd5 exd5 6. Qf3 Bxc3+ 7. bxc3 Nbd7 8. Bd3 0-0 9. Ne2 c5 10. 0-0 Qc7 11. Nf4 Qc6 12. Rab1 Rd8 13. Nxd5 Nxd5 14. Bxd8 Nxc3 15. Bxh7+ Kxh7 16. Qxc3 b6 17. d5 Qxd5 18. Rbd1 Qc6 19. Rfe1 Nf8 20. Be7 Ng6 21. Qg3 Be6 22. Bg5 Bxa2 23. Rd6 Qb5 24. Qf3 Rf8 25. h4 Qb4 26. c3 Qc4 27. Re4 Qb5 28. h5 Nh8 29. h6 g6 30. Qf6 Rg8 31. Rd8 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1987.03.14"]
[Round "3"]
[White "Fernandez, Sixto"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "47"]
[EventDate "1987.02.28"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Nc6 5. 0-0 Bc5 6. e5 d5 7. exf6 dxc4 8. Re1+ Be6 9. Ng5 Qd5 10. Nc3 Qf5 11. g4 Qxf6 12. Nd5 Qd8 13. Rxe6+ fxe6 14. Nxe6 Qh4 15. Bg5 Qxg5 16. Nxg5 0-0-0 17. Nf7 Rxd5 18. Qf3 Rd7 19. Nxh8 Ne5 20. Qf5 Bd6 21. f4 g6 22. Qe6 Nf3+ 23. Kf2 Nd2 24. Nf7 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1987.03.07"]
[Round "2"]
[White "Mendez Bayon, David"]
[Black "Santos Garcia, Fernando"]
[Result "1/2-1/2"]
[ECO "B25"]
[PlyCount "82"]
[EventDate "1987.02.28"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nh3 Nge7 8. 0-0 0-0 9. f5 gxf5 10. exf5 f6 11. g4 d5 12. Kh1 Nd4 13. Be3 Qd6 14. Ng1 Bd7 15. h4 Bc6 16. Nce2 Nxe2 17. Qxe2 d4 18. Bd2 Bxg2+ 19. Qxg2 Qd5 20. Ne2 Qxg2+ 21. Kxg2 h5 22. gxh5 Kh7 23. Ng3 Bh6 24. Rf2 Nd5 25. Bxh6 Kxh6 26. Ne4 Kxh5 27. Kf3 b6 28. Rg1 Rg8 29. Rfg2 Rxg2 30. Rxg2 Ne3 31. Nxf6+ Kxh4 32. Rg8 Rxg8 33. Nxg8 Kg5 34. Ke4 Nxf5 35. Kxe5 Ne3 36. Ne7 Nxc2 37. Nc8 Nb4 38. Ke4 Nxa2 39. Nxa7 Nc1 40. Nc6 Kf6 41. Ne5 Ke6 1/2-1/2

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1987.02.28"]
[Round "1"]
[White "Amigo Roman, Pedro"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "D07"]
[PlyCount "64"]
[EventDate "1987.02.28"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nc6 2. Nf3 d5 3. c4 e5 4. dxe5 Bb4+ 5. Nbd2 dxc4 6. Qc2 Be6 7. e3 Qd5 8. Be2 0-0-0 9. 0-0 Bxd2 10. Bxd2 Nxe5 11. Bc3 Nxf3+ 12. Bxf3 Qg5 13. b3 Bd5 14. Bxd5 Rxd5 15. bxc4 Rd6 16. Rab1 Nf6 17. Bd4 c5 18. Rb5 Nd7 19. f4 Qh5 20. Be5 Rh6 21. g3 Re8 22. Qg2 Rb6 23. Rxb6 axb6 24. g4 Qh6 25. g5 Qe6 26. Bxg7 Qxe3+ 27. Kh1 Qd3 28. Rc1 Re2 29. Qg3 Qe4+ 30. Kg1 Re3 31. Qg4 Rd3 32. h4 Qe3+ 0-1

[Event "Valladolid San Mateo op 04th"]
[Site "Valladolid"]
[Date "1986.09.20"]
[Round "6"]
[White "Barrueco Carbajo, Luis Eugenio"]
[Black "Mendez Bayon, David"]
[Result "1/2-1/2"]
[ECO "A40"]
[PlyCount "84"]
[EventDate "1986.09.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. f4 Ng6 5. c4 exd5 6. cxd5 Bc5 7. Nf3 Nh6 8. Qc2 d6 9. f5 Nh4 10. Ne5 Bb4+ 11. Nc3 Bxc3+ 12. Qxc3 dxe5 13. Bxh6 0-0 14. Qg3 Nxf5 15. exf5 Qf6 16. Bg5 Qxf5 17. 0-0-0 Qg6 18. Bc4 Bd7 19. Bd2 Qxg3 20. hxg3 Bf5 21. Bc3 e4 22. b3 a6 23. Kb2 Rfe8 24. Be2 Rad8 25. Rh5 Bg6 26. Re5 f6 27. Rxe8+ Bxe8 28. a4 Bf7 29. Bc4 h5 30. Bb4 b5 31. axb5 axb5 32. Bxb5 Rb8 33. d6 cxd6 34. Bxd6 Rxb5 35. b4 Rd5 36. Rxd5 Bxd5 37. Kc3 Kf7 38. Kd4 Ke6 39. Bf4 e3 40. Kxe3 Bxg2 41. b5 g5 42. Bb8 f5 1/2-1/2

[Event "Valladolid San Mateo op 04th"]
[Site "Valladolid"]
[Date "1986.09.19"]
[Round "5"]
[White "Calvo Garcia, Pedro"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "77"]
[EventDate "1986.09.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 Nc6 5. Bg2 d4 6. Nce2 e5 7. f4 g6 8. Nh3 Bg4 9. Nf2 Bxe2 10. Qxe2 h5 11. f5 Bh6 12. 0-0 Bxc1 13. Raxc1 Qg5 14. Nh3 Qe7 15. Qf3 Nh6 16. fxg6 fxg6 17. Qf6 Rg8 18. Ng5 Ng4 19. Qe6 Qxe6 20. Nxe6 Ke7 21. Nxc5 a6 22. Nb3 Ne3 23. Rf2 Rac8 24. Bh3 Rc7 25. c3 dxc3 26. bxc3 Rd8 27. d4 Nb8 28. Rd2 g5 29. Rd3 Nc4 30. Bf5 Nd7 31. Rf1 g4 32. Bg6 Nf6 33. Rf5 a5 34. dxe5 Rxd3 35. exf6+ Kf8 36. Nd4 Rxd4 37. cxd4 Nd2 38. Rxh5 Nf3+ 39. Kf2 1-0

[Event "Valladolid San Mateo op 04th"]
[Site "Valladolid"]
[Date "1986.09.18"]
[Round "4"]
[White "Mendez Bayon, David"]
[Black "Mateo Mateo, Angel"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "105"]
[EventDate "1986.09.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Be7 4. dxe5 Bg4 5. exd6 Bxd6 6. Bb5+ c6 7. Bd3 Nf6 8. Nc3 0-0 9. h3 Bh5 10. 0-0 Nbd7 11. Be2 Re8 12. Qxd6 Re6 13. Qd4 Qe7 14. Bg5 Rd6 15. Bxf6 Nxf6 16. Qb4 Bxf3 17. Bxf3 Qe5 18. Rad1 Rxd1 19. Rxd1 b5 20. Qd6 Re8 21. Qxe5 Rxe5 22. Rd8+ Ne8 23. Ra8 b4 24. Na4 g6 25. Rc8 Kg7 26. Rxc6 Nf6 27. Nc5 h5 28. Nd3 Rb5 29. e5 Nh7 30. h4 a5 31. b3 Rb8 32. Rc7 Kg8 33. Bd5 Rf8 34. f4 a4 35. bxa4 g5 36. hxg5 b3 37. axb3 h4 38. a5 h3 39. a6 h2+ 40. Kxh2 Kg7 41. g4 Rh8 42. Kg3 Nxg5 43. fxg5 Kg6 44. Nf4+ Kxg5 45. Nh3+ Kg6 46. Bb7 f5 47. Rc6+ Kg7 48. Rc8 Rh6 49. a7 fxg4 50. Rc7+ Kg6 51. Be4+ Kh5 52. Nf4+ Kg5 53. Rg7+ 1-0

[Event "Valladolid San Mateo op 04th"]
[Site "Valladolid"]
[Date "1986.09.17"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "Herrero Rivas, Claudio"]
[Result "0-1"]
[ECO "C56"]
[PlyCount "72"]
[EventDate "1986.09.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. Ng5 Ne5 6. Qxd4 Nxc4 7. Qxc4 d5 8. exd5 Bd6 9. Qe2+ Be7 10. 0-0 0-0 11. c4 Re8 12. Qc2 g6 13. Nc3 Bf5 14. Qb3 b6 15. Nf3 a6 16. Nd4 Bd7 17. Bf4 Bc5 18. Qd1 Nh5 19. Be3 Qh4 20. g3 Qh3 21. Qf3 Ng7 22. Ne4 Be7 23. Qg2 Qh5 24. h4 Qg4 25. f3 Qh5 26. Rfe1 f5 27. Ng5 Bc5 28. Rad1 f4 29. Bf2 fxg3 30. Qxg3 Rxe1+ 31. Rxe1 h6 32. Ne4 Rf8 33. Kg2 Bxd4 34. Bxd4 Nf5 35. Qh2 Nxd4 36. f4 Qf3+ 0-1

[Event "Valladolid San Mateo op 04th"]
[Site "Valladolid"]
[Date "1986.09.16"]
[Round "2"]
[White "Raya Bailen, Manuel"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "A25"]
[PlyCount "90"]
[EventDate "1986.09.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. d3 Nf6 5. Bg2 Bb4 6. Bd2 0-0 7. e3 Bxc3 8. Bxc3 d6 9. Ne2 a5 10. 0-0 Qe8 11. d4 e4 12. Nf4 Qf7 13. Rc1 g5 14. Ne2 Bd7 15. a3 a4 16. Qd2 h6 17. f4 exf3 18. Bxf3 Rae8 19. Qd3 Qe7 20. Bd2 Ne4 21. Be1 Nf6 22. Bf2 Ne4 23. Nc3 Nxf2 24. Kxf2 Qg7 25. Bd5+ Kh8 26. Kg2 f4 27. exf4 gxf4 28. Rcd1 Bg4 29. Rd2 Re3 30. Qc2 f3+ 31. Kg1 Nxd4 32. Qb1 Bh3 33. Rff2 Rfe8 34. Rd1 Qe7 35. Be4 Ne2+ 36. Rxe2 fxe2 37. Re1 Rxe4 38. Nxe4 Qxe4 39. Qxe4 Rxe4 40. Kf2 Bf1 41. Rc1 Kg7 42. Ke1 Rd4 43. h3 Kf6 44. h4 Ke5 45. Kf2 Rd1 0-1

[Event "Valladolid San Mateo op 04th"]
[Site "Valladolid"]
[Date "1986.09.15"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Del Cura Gutierrez, Alfredo"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "63"]
[EventDate "1986.09.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 e5 3. f4 d6 4. Nf3 Nc6 5. d4 exd4 6. Nxd4 Be7 7. Be2 0-0 8. 0-0 h6 9. Bf3 Nxd4 10. Qxd4 Nh7 11. Be3 a5 12. Rad1 Rb8 13. Nd5 Be6 14. c4 Bxd5 15. cxd5 Bf6 16. e5 Bh4 17. g3 Be7 18. Qd3 dxe5 19. fxe5 Qe8 20. h4 f6 21. Be4 Ng5 22. hxg5 fxg5 23. Bg6 Qc8 24. Bf5 Qe8 25. Be6+ Kh8 26. Rxf8+ Bxf8 27. Rf1 c6 28. Bd4 Rd8 29. Bf7 Qd7 30. e6 Qxd5 31. e7 Qxd4+ 32. Qxd4 1-0

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.30"]
[Round "8"]
[White "Mendez Bayon, David"]
[Black "Otero Martin, Enrique"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "75"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 a6 5. d3 Nd4 6. Nxd4 cxd4 7. Ne2 Qb6 8. c3 dxc3 9. bxc3 Nf6 10. Ng3 d6 11. Be2 Bd7 12. Bd2 Be7 13. Rb1 Qc7 14. 0-0 h5 15. f5 h4 16. fxe6 hxg3 17. exd7+ Qxd7 18. hxg3 Rh7 19. Bf3 Qe6 20. Rxb7 Qe5 21. Bf4 Qxc3 22. Qd2 Qc5+ 23. d4 Qc6 24. e5 Nd5 25. Rfb1 dxe5 26. Bxe5 f6 27. Bf4 g5 28. Qd3 f5 29. Rb8+ Rxb8 30. Rxb8+ Bd8 31. Bxg5 Rd7 32. Bh5+ Kf8 33. Qxf5+ Kg7 34. Bxd8 Qd6 35. Qe5+ Qxe5 36. dxe5 Ne3 37. Bf6+ Kh7 38. Rh8# 1-0

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.27"]
[Round "7"]
[White "Mendez Bayon, David"]
[Black "Arranz Calvo, Andres"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "107"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 c6 5. Qd2 Bg7 6. Ne5 Nbd7 7. f3 Nh5 8. e4 Nxf4 9. Qxf4 Nxe5 10. dxe5 dxe4 11. Bc4 0-0 12. Qxe4 Bf5 13. Qe2 Qd4 14. e6 Bxe6 15. Bxe6 fxe6 16. Qxe6+ Kh8 17. Qe4 Rad8 18. Qxd4 Rxd4 19. Nd1 Rfd8 20. c3 Rd2 21. 0-0 Bh6 22. f4 Bxf4 23. Rxf4 Rxd1+ 24. Rxd1 Rxd1+ 25. Kf2 Rd2+ 26. Kf3 Rxb2 27. Ra4 a6 28. Re4 Rxa2 29. Rxe7 Rb2 30. Rd7 Rb3 31. Kg4 a5 32. Kg5 Rb5+ 33. Kf6 Rf5+ 34. Ke6 b5 35. g4 Rf4 36. g5 b4 37. cxb4 axb4 38. Rb7 c5 39. h4 Rf8 40. Rb5 Kg8 41. Kd6 Rf5 42. Rb8+ Kg7 43. Rb7+ Rf7 44. Rb5 h6 45. Rxc5 hxg5 46. hxg5 Rb7 47. Kc6 Rb8 48. Kc7 Rf8 49. Kd6 Rd8+ 50. Ke6 Rb8 51. Rc7+ Kh8 52. Kf7 b3 53. Rc1 b2 54. Rh1# 1-0

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.23"]
[Round "6"]
[White "Garcia Corada, Pedro"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "A01"]
[PlyCount "46"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 d6 3. g3 f5 4. Bg2 Nf6 5. d3 Nc6 6. Nd2 g6 7. e4 Bg7 8. Ne2 0-0 9. exf5 Bxf5 10. 0-0 Qd7 11. f4 Ng4 12. Rf3 e4 13. dxe4 Bxb2 14. Rb1 Ba3 15. exf5 Bc5+ 16. Kh1 Qxf5 17. Qe1 Rae8 18. h3 Ne3 19. c3 Nxg2 20. Kxg2 Qe6 21. Rf2 Bxf2 22. Kxf2 Ne5 23. Ke3 Qd5 0-1

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.20"]
[Round "5"]
[White "Mendez Bayon, David"]
[Black "Munoz Garcia, Eduardo"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "55"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 e6 4. Nf3 Nf6 5. Bb5+ Bd7 6. Bxd7+ Nfxd7 7. 0-0 Nc6 8. d4 cxd4 9. Nxd4 a6 10. Kh1 Be7 11. f5 Nxd4 12. Qxd4 0-0 13. Be3 Rc8 14. Rad1 Qc7 15. Qd2 Rcd8 16. Bg5 Nf6 17. Qf4 Qc6 18. Rd3 b5 19. Qh4 Rfe8 20. Rh3 Qc4 21. Re1 b4 22. b3 Qc5 23. Nd1 exf5 24. Ne3 fxe4 25. Bxf6 Bxf6 26. Qxh7+ Kf8 27. Nf5 g6 28. Qh8+ 1-0

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.13"]
[Round "4"]
[White "Gonzalez Lopez, Juan Antonio"]
[Black "Mendez Bayon, David"]
[Result "1/2-1/2"]
[ECO "C41"]
[PlyCount "39"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 c6 4. c3 Nf6 5. Qb3 Qe7 6. Ng5 d5 7. exd5 cxd5 8. Bb5+ Nc6 9. 0-0 h6 10. Nf3 Bg4 11. c4 d4 12. Re1 Bxf3 13. Qxf3 Qc7 14. d3 Bb4 15. Nd2 0-0 16. a3 Bxd2 17. Bxd2 Nd7 18. Qf5 Rad8 19. Bb4 Rfe8 20. Ba4 1/2-1/2

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.09"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "Amigo Roman, Pedro"]
[Result "1/2-1/2"]
[ECO "A00"]
[PlyCount "82"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. a3 Nf6 2. e3 c5 3. b4 b6 4. c4 Bb7 5. Nf3 e6 6. Qb3 Na6 7. d4 cxb4 8. Bd2 bxa3 9. Nxa3 Nc7 10. Be2 Be7 11. 0-0 0-0 12. Bb4 Ne4 13. Rfc1 f5 14. Bxe7 Qxe7 15. Nb5 Nxb5 16. Qxb5 Bc6 17. Qb2 g5 18. Ne5 g4 19. f3 gxf3 20. Bxf3 Qg5 21. Re1 Rf6 22. Nxc6 dxc6 23. Qc2 Qh4 24. g3 Rg6 25. Bxe4 Qxe4 26. Qxe4 fxe4 27. Rf1 e5 28. dxe5 Re6 29. Rfb1 c5 30. Rd1 Rxe5 31. Rd6 Ree8 32. Ra6 Kf7 33. Rd7+ Re7 34. Rd6 Rc8 35. Ra1 Rcc7 36. Rf1+ Kg7 37. Rf4 Rc8 38. h4 Rf8 39. Rg4+ Kf7 40. Kf2 Ke8+ 41. Ke2 Re5 1/2-1/2

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.06"]
[Round "2"]
[White "Alonso Centeno, Juan Jose"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "D00"]
[PlyCount "122"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Nf3 c6 4. e3 g6 5. h3 Bg7 6. Bd3 0-0 7. b3 Re8 8. Ne5 Nfd7 9. f4 Nxe5 10. fxe5 f6 11. exf6 Bxf6 12. 0-0 Nd7 13. Bb2 e5 14. dxe5 Nxe5 15. Ne2 Nf3+ 16. Rxf3 Bxb2 17. Rb1 Bg7 18. Nf4 Rf8 19. Qe1 g5 20. Nh5 Rxf3 21. gxf3 Be5 22. f4 Qe8 23. Qe2 gxf4 24. exf4 Bd4+ 25. Kh2 Qxe2+ 26. Bxe2 Bf5 27. Bd3 Bxd3 28. cxd3 Re8 29. Ng3 Kf7 30. Nf5 Re2+ 31. Kh1 Bc5 32. b4 Bf8 33. a3 Kf6 34. Ng3 Re3 35. Kg2 Rxd3 36. Re1 Rxa3 37. Nh5+ Kf7 38. f5 Bxb4 39. Re6 d4 40. Rh6 Ra2+ 41. Kf3 Kg8 42. Re6 Ra3+ 43. Kg4 Re3 44. Nf6+ Kf7 45. Ne4 h6 46. h4 a5 47. Kh5 Bf8 48. Nd6+ Bxd6 49. Rxd6 Re5 50. Rxd4 Rxf5+ 51. Kxh6 b5 52. h5 b4 53. Rd7+ Ke6 54. Rb7 Rb5 55. Rg7 b3 56. Rg1 a4 57. Kg6 Rxh5 58. Kxh5 b2 59. Kg6 a3 60. Re1+ Kd5 61. Kf5 a2 0-1

[Event "Valladolid CC Reloj Justina 14th"]
[Site "Valladolid"]
[Date "1985.08.02"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Quemada Sisniega, Jose Maria"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "35"]
[EventDate "1985.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 e5 3. f4 d6 4. Nf3 Be7 5. d4 Nbd7 6. Bc4 exf4 7. 0-0 Nb6 8. Bb3 0-0 9. Bxf4 Bg4 10. Qe1 Nh5 11. Be3 Bxf3 12. Rxf3 Bg5 13. a4 Bxe3+ 14. Qxe3 a5 15. Raf1 Kh8 16. g4 Nf6 17. g5 Ng4 18. Qf4 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1985.05.04"]
[Round "8"]
[White "Mendez Bayon, David"]
[Black "Amigo Roman, Pedro"]
[Result "0-1"]
[ECO "B20"]
[PlyCount "82"]
[EventDate "1985.03.09"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. b4 cxb4 3. Bb2 d5 4. exd5 Qxd5 5. c4 Qe4+ 6. Be2 Nc6 7. d4 Bf5 8. d5 Ne5 9. Bxe5 Qxe5 10. Nd2 Bc2 11. Qc1 Nf6 12. Ngf3 Qc3 13. 0-0 g6 14. a3 Bg7 15. axb4 Ne4 16. Ra2 Nxd2 17. Nxd2 Bf5 18. b5 0-0 19. g4 Bd7 20. Rc2 Qh3 21. Re1 Bxg4 22. Bf1 Qh4 23. Qa3 Bf5 24. Ra2 Bh6 25. Qxe7 Qg4+ 26. Bg2 Rae8 27. Qxe8 Rxe8 28. Rxe8+ Kg7 29. Ne4 Qd1+ 30. Bf1 Bh3 31. Ng3 Bf4 32. Rae2 Bg4 33. Re1 Qc2 34. Kg2 h5 35. Ne2 Bd2 36. Ra1 Qxc4 37. Rxa7 Qxd5+ 38. Kg1 Qf3 39. Re7 Be1 40. Bg2 Qxf2+ 41. Kh1 Bf3 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1985.04.27"]
[Round "7"]
[White "Casado, Roberto"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "E10"]
[PlyCount "56"]
[EventDate "1985.03.09"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. e3 e6 5. dxe6 fxe6 6. cxb5 d5 7. Nf3 Bd6 8. Be2 0-0 9. 0-0 Nbd7 10. b3 Ne5 11. Bb2 Nxf3+ 12. Bxf3 Bb7 13. Nd2 e5 14. Rc1 e4 15. Be2 Qe7 16. a4 Rad8 17. h3 Bc7 18. Re1 d4 19. Bc4+ Kh8 20. exd4 cxd4 21. Nf1 e3 22. fxe3 dxe3 23. Qe2 Ne4 24. Ba1 Rf2 25. Qg4 Rd6 26. Rxe3 Rg6 27. Qxe4 Rgxg2+ 28. Qxg2 Rxg2+ 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1985.04.20"]
[Round "6"]
[White "Mendez Bayon, David"]
[Black "Santos Garcia, Fernando"]
[Result "1/2-1/2"]
[ECO "A00"]
[PlyCount "33"]
[EventDate "1985.03.09"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nc3 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 5. e4 Nxd4 6. Qxd4 dxe4 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. Qxd7+ Kxd7 10. Nxe4 Nf6 11. Ng5 Ke8 12. Ke2 Rc8 13. c3 e6 14. f3 Bc5 15. Be3 Ke7 16. Rhd1 h6 17. Ne4 1/2-1/2

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1985.03.30"]
[Round "4"]
[White "Mendez Bayon, David"]
[Black "Vila Dupla, Manuel"]
[Result "1-0"]
[ECO "A20"]
[PlyCount "35"]
[EventDate "1985.03.09"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. a3 e5 2. c4 b6 3. Nc3 Bb7 4. Nf3 d6 5. d4 exd4 6. Nxd4 Nf6 7. Bg5 Nbd7 8. f3 Be7 9. Nf5 0-0 10. e4 Re8 11. Be2 Bf8 12. 0-0 g6 13. Nh6+ Kg7 14. f4 Be7 15. Bf3 Ng8 16. Bxe7 Rxe7 17. Ng4 Ngf6 18. Nxf6 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1985.03.23"]
[Round "3"]
[White "Garcia Corada, Pedro"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "A49"]
[PlyCount "57"]
[EventDate "1985.03.09"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 d6 3. g3 Nf6 4. Bg2 g6 5. d4 Bg7 6. dxe5 Ng4 7. Nf3 0-0 8. h3 Nxe5 9. Nxe5 dxe5 10. Qxd8 Rxd8 11. Nd2 Nc6 12. Bxc6 bxc6 13. 0-0-0 a5 14. a4 Be6 15. h4 c5 16. Nc4 Bd5 17. Rhe1 Bxc4 18. bxc4 Rdb8 19. Rd7 Rb4 20. Red1 Bf6 21. R1d5 Rxa4 22. Rxc5 Ra7 23. f4 Bg7 24. Rd8+ Bf8 25. Rxe5 Kg7 26. Ree8+ Kh6 27. Rxf8 Rxc4 28. Rxf7 a4 29. Rxh7+ 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1985.03.16"]
[Round "2"]
[White "Mendez Bayon, David"]
[Black "Lopez Fuente, Miguel Angel"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "47"]
[EventDate "1985.03.09"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. e4 d6 7. Bb5 Nf6 8. Bg5 h6 9. Bf4 0-0 10. Qd2 Re8 11. f3 Nh5 12. 0-0-0 Nxf4 13. Qxf4 Qg5 14. Qxg5 hxg5 15. Nd5 f5 16. a4 fxe4 17. a5 Bf2 18. Nxc7 exf3 19. gxf3 Bf5 20. Nxa8 Rxa8 21. Rxd6 Nb4 22. Bd3 Bxd3 23. cxd3 Rc8+ 24. Kb1 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1985.03.09"]
[Round "1"]
[White "Cano Medrano, Jose Manuel"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "64"]
[EventDate "1985.03.09"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 Nc6 7. Nf3 0-0 8. Bd2 a6 9. 0-0 Qc7 10. h3 b5 11. a3 Bc5 12. Ne2 d5 13. Bf4 Qa7 14. exd5 Nxd5 15. Bg3 Bb7 16. c3 h6 17. Ne5 Nxe5 18. Bxe5 f6 19. Bg3 Rad8 20. Qc2 Qa8 21. Be4 Kh8 22. Bxd5 Bxd5 23. Nf4 Be4 24. Qb3 e5 25. Ne6 Bd5 26. Nc7 Bxb3 27. Nxa8 Rxa8 28. Rfe1 Rad8 29. Re2 Rd3 30. Kf1 Rfd8 31. Ree1 Bc4 32. Kg1 Rxg3 0-1

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.31"]
[Round "8"]
[White "Garcia Cortes Loriente, Miguel Jose"]
[Black "Mendez Bayon, David"]
[Result "1/2-1/2"]
[ECO "D35"]
[PlyCount "60"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. cxd5 exd5 5. Nf3 Nf6 6. Bg5 Be7 7. e3 c6 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. 0-0 0-0 11. Rab1 Re8 12. b4 h6 13. Bxf6 Bxf6 14. a4 a6 15. Rfc1 Ra7 16. Rc2 Be7 17. b5 axb5 18. axb5 Qa8 19. bxc6 bxc6 20. Ne2 Rb8 21. Rxb8+ Nxb8 22. g3 Ra3 23. Qf5 Qb7 24. Ne5 Bd6 25. Nf4 Bxe5 26. dxe5 Ra1+ 27. Kg2 Qb1 28. Qc8+ Kh7 29. Qf5+ Kg8 30. Qc8+ Kh7 1/2-1/2

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.28"]
[Round "7"]
[White "Mendez Bayon, David"]
[Black "Garcia Macho, Alberto"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "59"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 h6 5. Bxf6 exf6 6. f4 h5 7. Bd3 Bg4 8. Qd2 Bh6 9. h3 Bd7 10. Nf3 Nc6 11. Nd5 Be6 12. 0-0 Bxd5 13. exd5 Ne7 14. Rae1 0-0 15. c4 c6 16. dxc6 bxc6 17. g4 Qd7 18. Nh2 Rae8 19. Qf2 Kh8 20. Kh1 Rg8 21. Qf3 h4 22. Qf2 g5 23. fxg5 Bxg5 24. Nf3 Ng6 25. Nxg5 Rxe1 26. Qxf6+ Rg7 27. Rxe1 Kg8 28. Bf5 Qb7 29. Re8+ Nf8 30. Rxf8+ 1-0

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.24"]
[Round "6"]
[White "Sanz Lazaro, Angel Luis"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "A57"]
[PlyCount "68"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 e6 5. Nc3 exd5 6. Nxd5 Bb7 7. e4 Nxe4 8. Bc4 Be7 9. Qe2 Nf6 10. Nxf6+ gxf6 11. Nf3 d5 12. Bd3 Qd6 13. Nh4 c4 14. Nf5 Qe5 15. Nxe7 cxd3 16. Qxe5 fxe5 17. Nf5 Kd7 18. Bd2 Ke6 19. Ng3 Nd7 20. Rc1 Rac8 21. 0-0 f5 22. Rfe1 d4 23. f3 Rxc1 24. Rxc1 Rc8 25. Rxc8 Bxc8 26. Kf2 Nc5 27. Bb4 Kd5 28. Ke1 Bd7 29. Kd2 e4 30. Bxc5 e3+ 31. Kxd3 Bxb5+ 32. Kc2 Kxc5 33. Nxf5 Bf1 34. g3 Be2 0-1

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.21"]
[Round "5"]
[White "Mendez Bayon, David"]
[Black "Amigo Roman, Pedro"]
[Result "1/2-1/2"]
[ECO "B31"]
[PlyCount "98"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bb5 g6 5. 0-0 Bg7 6. Bxc6 bxc6 7. d3 d6 8. Be3 Ne7 9. d4 cxd4 10. Bxd4 e5 11. Be3 0-0 12. Qd2 Qc7 13. Bh6 Ba6 14. Rfe1 Rad8 15. Bxg7 Kxg7 16. h4 f6 17. Na4 Bb5 18. Qb4 Rb8 19. b3 c5 20. Qc3 Bxa4 21. bxa4 Rb4 22. a3 Rxa4 23. Rab1 Rb8 24. Rb3 Nc6 25. Nd2 Nd4 26. Rxb8 Qxb8 27. Qh3 Qc7 28. h5 Nxc2 29. h6+ Kf7 30. Qb3+ c4 31. Qxc2 Rxa3 32. Qxc4+ Qxc4 33. Nxc4 Ra6 34. Rb1 g5 35. Ne3 Kg6 36. Nf5 d5 37. Ne7+ Kxh6 38. exd5 Kh5 39. Nc8 Ra2 40. Rd1 Rc2 41. Nxa7 Rc7 42. d6 Rd7 43. Nb5 Kg6 44. f3 h5 45. Kf2 g4 46. Rc1 Kf5 47. Ke3 Ke6 48. fxg4 hxg4 49. Rc8 Rb7 1/2-1/2

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.17"]
[Round "4"]
[White "Gonzalez Lopez, Juan Antonio"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "106"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 0-0 8. 0-0 d5 9. Nxc6 bxc6 10. e5 Ne8 11. f4 f6 12. exf6 Bxf6 13. Ne4 Bxb2 14. Rb1 Bg7 15. Nc5 Qd6 16. Nb3 Nf6 17. Bf3 Re8 18. Qd2 Bf5 19. Nc5 Ng4 20. Bxg4 Bxg4 21. Na6 d4 22. Bf2 e5 23. fxe5 Bxe5 24. Nb4 Bxh2+ 25. Kh1 c5 26. Nd3 Be2 27. Rfe1 Bxd3 28. Qxd3 Rxe1+ 29. Bxe1 Be5 30. Rb5 Rf8 31. Qc4+ Kh8 32. Kg1 Qf6 33. Rxc5 Qf4 34. Rxe5 Qxe5 35. Bf2 Rd8 36. Qf7 Qf5 37. Qxa7 Qd7 38. Qa6 Kg8 39. Bh4 Rb8 40. Qc4+ Kf8 41. Qc5+ Kg8 42. Bf6 Rc8 43. Qb4 Qe6 44. Bxd4 Rxc2 45. Qb8+ Rc8 46. Qb2 Re8 47. Bc3 Rd8 48. a4 Qe3+ 49. Kh1 Qh6+ 50. Kg1 Rd1+ 51. Kf2 Qf4+ 52. Ke2 Qf1+ 53. Ke3 Rd3+ 0-1

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.10"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "Garcia Corada, Pedro"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "77"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. b3 Nf6 2. Bb2 g6 3. e3 Bg7 4. c4 c5 5. Be2 0-0 6. d3 Nc6 7. Nf3 d6 8. 0-0 a6 9. Qc2 b6 10. Nbd2 Bb7 11. Rad1 Rc8 12. Qb1 Nh5 13. Ne1 Bxb2 14. Qxb2 Ng7 15. d4 Qc7 16. d5 Nb8 17. e4 e5 18. f4 exf4 19. Rxf4 Rce8 20. Nd3 f5 21. Rdf1 Nd7 22. Bd1 g5 23. R4f2 fxe4 24. Rxf8+ Nxf8 25. Nf2 Ng6 26. Nfxe4 Re5 27. Nf6+ Kh8 28. Nf3 Rf5 29. Bc2 Bc8 30. Bxf5 Bxf5 31. Nxg5 h6 32. Rxf5 Qe7 33. Rf1 Qe3+ 34. Kh1 hxg5 35. Nh5 Ne5 36. Rf8+ Kh7 37. Qb1+ Nd3 38. Rf3 Qe4 39. Nf6+ 1-0

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.07"]
[Round "2"]
[White "Arranz Calvo, Andres"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "C40"]
[PlyCount "78"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d5 3. d4 dxe4 4. Nxe5 Bd6 5. Nc3 Nf6 6. Bg5 Bf5 7. Be2 Nbd7 8. f4 exf3 9. Bxf3 h6 10. Bxf6 gxf6 11. Nxd7 Qxd7 12. Qe2+ Kf8 13. 0-0 Re8 14. Qf2 c6 15. Bxc6 bxc6 16. Qxf5 Qc7 17. Qxf6 Bxh2+ 18. Kh1 Rh7 19. Rae1 Rxe1 20. Rxe1 Bf4 21. Re6 Qd7 22. Re4 Bg5 23. Qe5 f5 24. Re1 Kf7 25. Rf1 Kg6 26. d5 cxd5 27. Qxd5 Bf6 28. Rd1 Qe7 29. Rf1 Qd7 30. Qxd7 Rxd7 31. Rd1 Rb7 32. Na4 Rb4 33. b3 Rh4+ 34. Kg1 Kg5 35. c3 Re4 36. Kf2 Kg4 37. Rd3 f4 38. Nc5 Bh4+ 39. g3 Bxg3+ 0-1

[Event "Valladolid CC Reloj Justina 13th"]
[Site "Valladolid"]
[Date "1984.08.03"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Garcia Prada, Juan"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "49"]
[EventDate "1984.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 d6 4. Nc3 exd4 5. Nxd4 Be7 6. Bf4 Bg4 7. f3 Bd7 8. Qd2 Nc6 9. 0-0-0 Nh5 10. Be3 Nxd4 11. Qxd4 Bg5 12. g4 Bxe3+ 13. Qxe3 Nf6 14. g5 Nh5 15. Be2 Qe7 16. Nd5 Qd8 17. f4 c6 18. Nc3 g6 19. Rxd6 Qc7 20. Rhd1 0-0-0 21. Qxa7 Nxf4 22. Qa8+ Qb8 23. Qxb8+ Kxb8 24. Rxd7 Rde8 25. Bg4 1-0

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1984.03.03"]
[Round "6"]
[White "Mendez Bayon, David"]
[Black "Vila Dupla, Santiago"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "72"]
[EventDate "1984.02.28"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Ne7 5. Nf3 Nec6 6. a3 a5 7. Bb5 Bd7 8. a4 Na7 9. Bxd7+ Qxd7 10. 0-0 c4 11. b3 cxb3 12. Qxb3 b5 13. Nbd2 b4 14. c4 Be7 15. cxd5 Qxd5 16. Qd3 Nd7 17. Nc4 Rc8 18. Ne3 Qb7 19. Bb2 Nb6 20. Nd2 Nd5 21. f4 Nxe3 22. Qxe3 Rc2 23. Rab1 0-0 24. f5 exf5 25. Rxf5 Qc6 26. Ne4 Nc8 27. Qd3 Rxb2 28. Rxb2 Qc1+ 29. Rf1 Qxb2 30. h4 Rd8 31. Qf3 Qxd4+ 32. Kh1 Rf8 33. Qf5 Qd5 34. h5 Qe6 35. Qf4 Nb6 36. Ra1 Nd7 0-1

[Event "Valladolid-ch Provincial Abs"]
[Site "Valladolid"]
[Date "1984.02.25"]
[Round "5"]
[White "Vila Dupla, Aurelio"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "B28"]
[PlyCount "72"]
[EventDate "1984.02.28"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ESP"]
[EventCategory "1"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nde2 Bc5 7. Ng3 Qb6 8. Qf3 d6 9. Nf5 Bxf5 10. Qxf5 Nc6 11. Bd3 Nd4 12. Qh3 h6 13. 0-0 Qc6 14. Bg5 Qd7 15. Bxf6 Qxh3 16. gxh3 gxf6 17. Nd5 0-0-0 18. b4 Ba7 19. Nxf6 h5 20. a4 Rh6 21. Nd5 Kb8 22. b5 axb5 23. axb5 Bc5 24. Ra2 Kc8 25. c3 Nf3+ 26. Kg2 Ng5 27. b6 Kd7 28. Bb5+ Ke6 29. Re2 Rg6 30. f4 Nxe4+ 31. Kh1 f5 32. Rxe4 fxe4 33. f5+ Kxd5 34. fxg6 Rg8 35. Rf6 e3 36. Kg2 Ke4 0-1

[Event "Valladolid-ch Provincial 1L cat"]
[Site "Valladolid"]
[Date "1980.??.??"]
[Round "?"]
[White "Amigo Roman, Pedro"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "A25"]
[PlyCount "67"]
[EventDate "1980.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Nge7 7. Rb1 0-0 8. b4 Bf5 9. d3 Qc8 10. h3 h5 11. b5 Nd8 12. a4 a6 13. e4 Be6 14. Be3 f5 15. Nd5 Bxd5 16. cxd5 h4 17. Bg5 Bf6 18. gxh4 f4 19. Bf3 axb5 20. axb5 Kg7 21. Bg4 Qb8 22. Ng1 Qa7 23. Nf3 Rh8 24. 0-0 Qb6 25. Qc2 Nf7 26. Rfc1 Ra3 27. Qxc7 Qxc7 28. Rxc7 Rxd3 29. Rxb7 Nh6 30. Kg2 Nxg4 31. hxg4 Kf7 32. Ra1 Re8 33. Rd7 Rb3 34. Rxd6 1-0

[Event "Valladolid CC Reloj Justina 06th"]
[Site "Valladolid"]
[Date "1977.08.26"]
[Round "8"]
[White "Fernandez Velasquez, Julian Felix"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "D86"]
[PlyCount "103"]
[EventDate "1977.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 0-0 8. Ne2 Nc6 9. a4 b6 10. 0-0 Bb7 11. f3 Qd7 12. Be3 Rfd8 13. Qc2 Na5 14. Ba2 Ba6 15. c4 c5 16. d5 Bxa1 17. Rxa1 e5 18. Bg5 Re8 19. Ng3 Kg7 20. Qc1 f6 21. Bh6+ Kg8 22. Qc2 Nb7 23. f4 Nd6 24. Rf1 Nf7 25. fxe5 fxe5 26. Bc1 Rf8 27. Bb2 Rae8 28. Bb3 Bc8 29. Qd2 Qe7 30. Bc1 Nd6 31. Rxf8+ Rxf8 32. Qd3 Qf6 33. Be3 Bg4 34. Bc2 h5 35. h3 h4 36. Nh1 Bd7 37. Bd1 g5 38. Nf2 Kg7 39. Qc2 Qg6 40. Bf3 Ne8 41. Qc3 Qf6 42. a5 Kg6 43. Bg4 Bxg4 44. Nxg4 Qg7 45. axb6 axb6 46. Qxe5 Qxe5 47. Nxe5+ Kh6 48. Nd7 Rf6 49. Nxf6 Nxf6 50. e5 Nd7 51. e6 Nf6 52. d6 1-0

[Event "Valladolid CC Reloj Justina 06th"]
[Site "Valladolid"]
[Date "1977.08.23"]
[Round "7"]
[White "Mendez Bayon, David"]
[Black "Corral Suarez, Francisco Javier"]
[Result "1/2-1/2"]
[ECO "B08"]
[PlyCount "67"]
[EventDate "1977.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bd3 Bg7 5. Nf3 0-0 6. h3 Nbd7 7. Be3 c6 8. Qd2 e5 9. dxe5 Nxe5 10. Nxe5 dxe5 11. 0-0-0 Be6 12. Bh6 Qa5 13. Bxg7 Kxg7 14. a3 Rfd8 15. h4 Nh5 16. f3 Bc4 17. Qe3 Bxd3 18. cxd3 Qb6 19. Qxb6 axb6 20. Ne2 b5 21. Kc2 Kg8 22. g4 Ng7 23. d4 exd4 24. Nxd4 h5 25. g5 Ra4 26. Ne2 Ne6 27. Rxd8+ Nxd8 28. Rd1 Ne6 29. Rd7 b4 30. axb4 Rxb4 31. Kc3 c5 32. b3 Kf8 33. Rd1 Nc7 34. Rd3 1/2-1/2

[Event "Valladolid CC Reloj Justina 06th"]
[Site "Valladolid"]
[Date "1977.08.19"]
[Round "6"]
[White "Mendez Bayon, David"]
[Black "Gonzalez Lopez, Juan Antonio"]
[Result "1-0"]
[ECO "E80"]
[PlyCount "65"]
[EventDate "1977.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 Bg7 5. f3 c6 6. Be3 Qb6 7. Qd2 c5 8. 0-0-0 Na6 9. g4 h5 10. dxc5 dxc5 11. Na4 Qc7 12. Bf4 Qd7 13. Qc2 Qc6 14. g5 Nh7 15. a3 0-0 16. Nc3 e6 17. e5 Bd7 18. Rd6 Qc7 19. Ne4 Bc6 20. Nf6+ Nxf6 21. gxf6 Bh8 22. Bh3 Kh7 23. Qg2 Rad8 24. Ne2 Rxd6 25. exd6 Qd7 26. Qg5 Bxf3 27. Rg1 Bxf6 28. Qxf6 Rg8 29. Ng3 Nb8 30. Qg5 Rf8 31. Nxh5 Bxh5 32. Qh6+ Kg8 33. Qxh5 1-0

[Event "Valladolid CC Reloj Justina 06th"]
[Site "Valladolid"]
[Date "1977.08.16"]
[Round "5"]
[White "Moral Sanz, Jose Luis"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "A40"]
[PlyCount "42"]
[EventDate "1977.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. Nf3 f5 5. Bf4 Nf6 6. e3 Bb4 7. Nd2 0-0 8. f3 c5 9. a3 cxd4 10. exd4 Bxc3 11. bxc3 Nc6 12. Be3 Qe8 13. Be2 Qg6 14. 0-0 Ne7 15. Bf4 Nh5 16. Bd6 Rf7 17. Bd3 Qg5 18. Qe2 Ng6 19. Bc2 Nhf4 20. Bxf4 Nxf4 21. Qf2 Nh3+ 0-1

[Event "Valladolid CC Reloj Justina 06th"]
[Site "Valladolid"]
[Date "1977.08.12"]
[Round "4"]
[White "Carretero Ajo, Jesus"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "C61"]
[PlyCount "71"]
[EventDate "1977.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Bc4 b5 5. Bxf7+ Kxf7 6. Nxd4 Qh4 7. Qf3+ Nf6 8. Nxb5 Bc5 9. d4 exd4 10. e5 Qe4+ 11. Qxe4 Nxe4 12. f3 Bb4+ 13. c3 dxc3 14. bxc3 Nxc3 15. N5xc3 Ba6 16. Bd2 Rhe8 17. f4 Bc4 18. Ne4 Be7 19. Kf2 d5 20. exd6 cxd6 21. Na3 Bd3 22. Rhe1 d5 23. Ng5+ Kg8 24. Nb1 Bc5+ 25. Kg3 Rxe1 26. Bxe1 Rb8 27. Nc3 Bc4 28. Ne6 Bd6 29. Rd1 Re8 30. Ng5 h6 31. Nf3 g5 32. Nxd5 gxf4+ 33. Nxf4 Bb8 34. a3 Be2 35. Rb1 Bd6 36. Bb4 1-0

[Event "Valladolid CC Reloj Justina 06th"]
[Site "Valladolid"]
[Date "1977.08.09"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "Chacon Calabres, Pedro"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "73"]
[EventDate "1977.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. b3 d5 3. Bb2 Nc6 4. Nc3 Nf6 5. f3 d4 6. Nb5 e5 7. Qe2 a6 8. Na3 b5 9. 0-0-0 Nb4 10. g4 Bd6 11. c3 Nc6 12. g5 Nh5 13. Nc2 Nf4 14. Qe1 d3 15. Ne3 Qxg5 16. Nd5 Nxd5 17. exd5 Ne7 18. Bxd3 Nxd5 19. Ne2 0-0 20. Rg1 Qe7 21. Be4 c6 22. Qg3 f5 23. Bc2 Bc5 24. d4 f4 25. Qf2 Ba3 26. dxe5 Bxb2+ 27. Kxb2 Qxe5 28. Nd4 b4 29. c4 Nc3 30. Rde1 Qf6 31. h4 c5 32. h5 cxd4 33. h6 Qxh6 34. Qxd4 Bb7 35. Rh1 Qf6 36. Bxh7+ Kf7 37. Qd7+ 1-0

[Event "Valladolid CC Reloj Justina 06th"]
[Site "Valladolid"]
[Date "1977.08.05"]
[Round "2"]
[White "Otero Martin, Enrique"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "A26"]
[PlyCount "53"]
[EventDate "1977.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 d6 4. Bg2 g6 5. d3 Bg7 6. Nf3 Nge7 7. Rb1 0-0 8. 0-0 h6 9. b4 Be6 10. b5 Nb8 11. Be3 c6 12. a4 f5 13. Qd2 f4 14. gxf4 exf4 15. Bd4 Nf5 16. Bxg7 Nxg7 17. a5 Qxa5 18. Nd4 Qc7 19. Qa2 a5 20. bxc6 bxc6 21. Nxe6 Nxe6 22. c5 Qd7 23. cxd6 Kh7 24. Bh3 Qg7 25. Qxe6 Qxc3 26. Rb7+ Kh8 27. Qe7 1-0

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.27"]
[Round "8"]
[White "Llorente Bajo, Maximo"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "D85"]
[PlyCount "80"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 0-0 8. Bf4 c5 9. Be2 Nc6 10. e5 cxd4 11. cxd4 Bg4 12. Be3 Rc8 13. 0-0 Nb4 14. Qb3 a5 15. Rfc1 Be6 16. Bc4 Rxc4 17. Rxc4 b5 18. Rxb4 Bxb3 19. Rxb3 Qd5 20. Rc1 Qb7 21. Rc5 Rb8 22. a4 b4 23. Rxa5 Qc6 24. Rc5 Qxa4 25. Nd2 f6 26. e6 f5 27. Bf4 Bxd4 28. Rd5 Rc8 29. Rxd4 Qa1+ 30. Rb1 Qxd4 31. g3 Rc6 32. Nb3 Qe4 33. Rd1 Rc8 34. Be3 Qxe6 35. Nc5 Qc4 36. Nd7 Qb5 37. Nb6 Rc6 38. Rd8+ Kf7 39. Nd7 Rd6 40. Bf4 Rxd7 0-1

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.24"]
[Round "7"]
[White "Mendez Bayon, David"]
[Black "Tovar, Juan Carlos"]
[Result "0-1"]
[ECO "B09"]
[PlyCount "96"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 Bg4 6. Be2 0-0 7. 0-0 Nc6 8. h3 Bd7 9. a3 a6 10. a4 Qc8 11. Nh2 Ne8 12. Be3 f5 13. e5 Nb4 14. Bc4+ e6 15. Nf3 c6 16. Ne2 Nd5 17. Bd2 b5 18. Bd3 c5 19. c3 dxe5 20. Nxe5 c4 21. Bc2 Nd6 22. Qe1 Rb8 23. a5 Bc6 24. Kh2 Ne4 25. g4 Ndf6 26. Ng1 Qb7 27. b3 Bd5 28. Rb1 Nxd2 29. Qxd2 Ne4 30. Qe1 Qc7 31. bxc4 Bxe5 32. cxd5 Bxf4+ 33. Kh1 exd5 34. Bxe4 fxe4 35. Ne2 Bd6 36. Rg1 Rf3 37. Qh4 Rbf8 38. Kg2 Be7 39. Qe1 Rf2+ 40. Qxf2 Rxf2+ 41. Kxf2 Qh2+ 42. Ke1 Qxh3 43. Rb2 Bh4+ 44. Kd1 Qd3+ 45. Rd2 Qb1+ 46. Nc1 Bg5 47. Rc2 Bxc1 48. Rxc1 Qd3+ 0-1

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.20"]
[Round "6"]
[White "De Andres Trelles, Francisco Jose"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "C43"]
[PlyCount "91"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. dxe5 Nxe4 5. exd6 Bxd6 6. Bd3 Nc5 7. b3 0-0 8. 0-0 Qf6 9. c3 Bg4 10. Be2 Ne6 11. Ba3 Rd8 12. Bxd6 Rxd6 13. Nbd2 Nc6 14. Ne4 Qe7 15. Nxd6 cxd6 16. Re1 Qc7 17. Nd4 Bxe2 18. Nxe6 fxe6 19. Qxe2 Re8 20. Qc4 Qd7 21. Rad1 Nd8 22. Rd3 b6 23. Rg3 Re7 24. Ree3 Nf7 25. f4 g6 26. f5 exf5 27. Rxe7 Qxe7 28. Qf1 Kh8 29. Qf2 Ne5 30. Re3 Kg7 31. Qd2 Qe6 32. Qd4 Kf7 33. c4 Qe7 34. b4 Qc7 35. c5 bxc5 36. bxc5 Ke6 37. cxd6 Qxd6 38. Qxd6+ Kxd6 39. Ra3 Nc6 40. Kf2 Kd7 41. Ke3 Kd6 42. Kf4 h6 43. Rh3 h5 44. Kg5 Ne7 45. Ra3 Ke6 46. Rxa7 1-0

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.17"]
[Round "5"]
[White "Mendez Bayon, David"]
[Black "Alonso Centeno, Juan Jose"]
[Result "1-0"]
[ECO "C10"]
[PlyCount "45"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nc6 5. Nf3 h6 6. Bd3 Nf6 7. Ng3 Bd6 8. Qe2 a6 9. Nf5 Rg8 10. 0-0 Ne7 11. Ne3 b5 12. c4 c6 13. c5 Bc7 14. a4 Bb7 15. Rd1 g5 16. Ne5 Qxd4 17. Nxf7 Rg7 18. Nd6+ Bxd6 19. Bg6+ Nxg6 20. Rxd4 Bxc5 21. Nf5 Rh7 22. Qxe6+ Be7 23. Nd6+ 1-0

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.13"]
[Round "4"]
[White "Carretero Ajo, Jesus"]
[Black "Mendez Bayon, David"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "45"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 h6 5. Nc3 c6 6. 0-0 Ngf6 7. Re1 Be7 8. Nh4 0-0 9. Nf5 Re8 10. Qf3 Bf8 11. Qg3 g6 12. Qxg6+ Kh8 13. Bxf7 exd4 14. Bxe8 Ne5 15. Qg3 Qxe8 16. Nxd4 c5 17. Nf5 Bxf5 18. exf5 Nf3+ 19. gxf3 Qxe1+ 20. Kg2 Re8 21. Bg5 Qe7 22. Re1 Qf7 23. Bxf6+ 1-0

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.10"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "Rivero Acedo, Jesus"]
[Result "0-1"]
[ECO "B60"]
[PlyCount "82"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e5 7. Nb3 h6 8. Bh4 Be7 9. f3 a6 10. a4 Be6 11. Be2 Bxb3 12. cxb3 Nd4 13. Bc4 0-0 14. 0-0 Nd7 15. Bf2 Nc6 16. Nd5 Nc5 17. b4 Ne6 18. a5 Ned4 19. Rc1 Rc8 20. Be1 Kh8 21. Bd3 Bg5 22. f4 Bxf4 23. Nxf4 exf4 24. Rxf4 Ne5 25. Rxc8 Qxc8 26. Bxa6 Ne6 27. Bxb7 Qxb7 28. Rf1 Nc4 29. Qd3 Rc8 30. Bc3 Ng5 31. Re1 Qc6 32. Re2 Ne5 33. Qc2 Ne6 34. Qd2 Ng5 35. Qc2 Ne6 36. Qd2 Kg8 37. Re1 Ng5 38. Qe3 Qd7 39. Re2 Ng4 40. Qd4 Ne5 41. Qd2 Ngf3+ 0-1

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.06"]
[Round "2"]
[White "Gonzalez Lopez, Juan Antonio"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "80"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. d3 Nf6 3. Nd2 Nc6 4. g3 Bc5 5. c3 0-0 6. Bg2 d5 7. Ngf3 a5 8. a4 Bb6 9. 0-0 Qe7 10. Re1 Rd8 11. Nb3 dxe4 12. Nfd2 Bg4 13. Qc2 exd3 14. Qb1 Be2 15. Nf1 Ng4 16. Be3 Nxe3 17. Nxe3 Qg5 18. Nf1 Rd6 19. Nbd2 Bxf1 20. Ne4 Qf5 21. Rxf1 Rd7 22. Qc1 Qg6 23. c4 f5 24. c5 Ba7 25. Ng5 Re8 26. Qc4+ Kh8 27. Nf3 e4 28. Nh4 Qf6 29. Bh3 Ne5 30. Qb5 g6 31. Qxa5 Bb8 32. Qb5 c6 33. Qb4 Nf3+ 34. Nxf3 exf3 35. Rfe1 Re2 36. Bf1 Rxb2 37. Qc4 Be5 38. Bxd3 Rd2 39. Rad1 R7xd3 40. Rxd2 Rxd2 0-1

[Event "Valladolid CC Reloj Justina 05th"]
[Site "Valladolid"]
[Date "1976.08.03"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Santos Garcia, Fernando"]
[Result "1/2-1/2"]
[ECO "B33"]
[PlyCount "76"]
[EventDate "1976.08.03"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bc4 0-0 8. Qd3 Bxc3+ 9. bxc3 Na5 10. Nxa5 Qxa5 11. 0-0 h6 12. a4 b5 13. Bd5 Nxd5 14. Qxd5 Rb8 15. Qxe5 Ba6 16. Ra3 Qd8 17. c4 Re8 18. Qd4 Qb6 19. Qxb6 Rxb6 20. cxb5 Bb7 21. Be3 Rbe6 22. f3 a6 23. c4 axb5 24. axb5 f5 25. Rd1 fxe4 26. f4 d6 27. h4 Rc8 28. Rd4 Re7 29. Ra7 Rcc7 30. Kf2 Kf7 31. Ra4 Red7 32. Rd2 Ke6 33. Bb6 Rc8 34. Ke3 g6 35. g3 h5 36. Bd4 Kf5 37. Rc2 Kg4 38. Kf2 Kf5 1/2-1/2

[Event "Valladolid CC Renault op 2nd"]
[Site "Valladolid"]
[Date "1976.06.26"]
[Round "8"]
[White "Mendez Bayon, David"]
[Black "Llorente Bajo, Maximo"]
[Result "0-1"]
[ECO "B05"]
[PlyCount "80"]
[EventDate "1976.05.08"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 g6 6. c4 Nb6 7. h3 Bxf3 8. Bxf3 c6 9. exd6 Nxc4 10. dxe7 Qxe7+ 11. Be2 Bg7 12. 0-0 Nd6 13. Nd2 0-0 14. Nf3 Nd7 15. Re1 Nf6 16. Bf4 Qd7 17. Qb3 Nb5 18. Rad1 Nd5 19. Ne5 Qf5 20. Bg3 Nf6 21. a4 Nd6 22. Nxg6 hxg6 23. Bxd6 Ne4 24. Bg3 Nxg3 25. fxg3 Qd5 26. Bc4 Bxd4+ 27. Kh2 Qd7 28. Re4 c5 29. Qd3 Kg7 30. b3 Rad8 31. Qf3 a6 32. Re5 Qc7 33. Ree1 Rde8 34. Re4 Rxe4 35. Qxe4 Qd7 36. Re1 f5 37. Qd3 Re8 38. Re2 Rxe2 39. Qxe2 a5 40. Bb5 Qd6 0-1

[Event "Valladolid CC Renault op 2nd"]
[Site "Valladolid"]
[Date "1976.06.19"]
[Round "7"]
[White "Moral Sanz, Jose Luis"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "D94"]
[PlyCount "56"]
[EventDate "1976.05.08"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Nf3 0-0 6. Be2 a6 7. 0-0 dxc4 8. Bxc4 b5 9. Be2 e6 10. a3 c5 11. b4 cxb4 12. axb4 Bb7 13. Qc2 Qc7 14. Qd3 Nbd7 15. Bd2 Nb6 16. Rac1 Qd6 17. Qb1 Rac8 18. Rfd1 Ng4 19. g3 f5 20. Qb3 Nc4 21. Be1 Bh6 22. h3 Nf6 23. Kh2 Ne4 24. Nxe4 fxe4 25. Nd2 Nxd2 26. Bxd2 Rxf2+ 27. Kh1 Re8 28. Bg4 Bd5 0-1

[Event "Valladolid CC Renault op 2nd"]
[Site "Valladolid"]
[Date "1976.06.12"]
[Round "6"]
[White "Mendez Bayon, David"]
[Black "Hernandez Romero, Juan"]
[Result "0-1"]
[ECO "B21"]
[PlyCount "54"]
[EventDate "1976.05.08"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. d4 Nf6 3. e5 Ng8 4. Nf3 cxd4 5. Bf4 Nc6 6. c3 Qb6 7. Qc2 d6 8. exd6 Nf6 9. dxe7 Bxe7 10. Bd3 dxc3 11. bxc3 h6 12. 0-0 Be6 13. h3 Rc8 14. Qe2 0-0 15. Nbd2 Nd5 16. Qe4 Nf6 17. Qa4 Qd8 18. Nd4 Nxd4 19. cxd4 a6 20. Be3 b5 21. Qd1 Rc3 22. Be2 Nd5 23. Nf3 Nxe3 24. fxe3 Rxe3 25. Ne1 Rxe2 26. Qxe2 Qxd4+ 27. Qf2 Qxa1 0-1

[Event "Valladolid CC Renault op 2nd"]
[Site "Valladolid"]
[Date "1976.06.06"]
[Round "5"]
[White "Fernandez Carvajal, Mariano"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "C59"]
[PlyCount "52"]
[EventDate "1976.05.08"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 Qc7 10. d3 Bd6 11. Nbd2 Bf5 12. a3 c5 13. c3 Rb8 14. Qc2 Qb7 15. Nh4 Bh7 16. Bf3 Qd7 17. Ne4 Be7 18. g3 Nb3 19. Rb1 Nxe4 20. dxe4 Bxh4 21. gxh4 0-0 22. Be2 Rfd8 23. h3 Nxc1 24. Rxc1 Bxe4 25. Bg4 Qc6 26. Bf3 Bxf3 0-1

[Event "Valladolid CC Renault op 2nd"]
[Site "Valladolid"]
[Date "1976.05.29"]
[Round "4"]
[White "Mendez Bayon, David"]
[Black "Prieto Hernandez, Jesus"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "74"]
[EventDate "1976.05.08"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Qf3 Be6 6. Bd2 Nf6 7. 0-0-0 Nc6 8. Bg5 Bxc3 9. Qxc3 h6 10. Bh4 g5 11. Bg3 Ne4 12. Qe3 Qf6 13. Bb5 Nxg3 14. hxg3 a6 15. Ba4 b5 16. Bb3 0-0-0 17. c3 Bg4 18. f3 Bf5 19. Nh3 Rhe8 20. Qf2 Na5 21. Bc2 Nc4 22. Rhe1 Bxc2 23. Kxc2 Qc6 24. Kb1 a5 25. b3 Na3+ 26. Kb2 b4 27. Rc1 Qd6 28. Qd2 Rxe1 29. Qxe1 Kb7 30. g4 Nb5 31. cxb4 axb4 32. Qd2 Ra8 33. Rc5 Nc3 34. Rxc3 bxc3+ 35. Qxc3 Qa3+ 36. Kc2 Qxa2+ 37. Qb2 Ra6 0-1

[Event "Valladolid CC Renault op 2nd"]
[Site "Valladolid"]
[Date "1976.05.22"]
[Round "3"]
[White "Rivero Acedo, Jesus"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "C90"]
[PlyCount "76"]
[EventDate "1976.05.08"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 d6 6. Re1 b5 7. Bb3 Bg4 8. c3 Na5 9. Bc2 c5 10. d3 Be7 11. Nbd2 0-0 12. Nf1 Nc6 13. Ng3 Qc8 14. h3 Bd7 15. Nh2 Ne8 16. f4 Bf6 17. f5 g6 18. Qg4 Bg7 19. Rf1 Ne7 20. h4 Nf6 21. Qf3 Ra7 22. Bg5 Qe8 23. h5 Bc8 24. h6 Bh8 25. Bxf6 Bxf6 26. Ng4 Bg5 27. Bb3 Kh8 28. fxg6 Nxg6 29. Nf6 Qe7 30. Nd5 Qd8 31. Qh5 Be6 32. Nf5 Bxd5 33. exd5 f6 34. Ng7 Nf4 35. Rxf4 Bxf4 36. Ne6 Qe8 37. Nxf8 Qxh5 38. d4 Be3+ 0-1

[Event "Valladolid CC Renault op 2nd"]
[Site "Valladolid"]
[Date "1976.05.08"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Gil Matilla, Constantino"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "116"]
[EventDate "1976.05.08"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. c3 Nf6 7. Nd2 0-0 8. Be2 d6 9. 0-0 Ne5 10. f4 Neg4 11. Bf2 Nxf2 12. Rxf2 Qb6 13. Qb3 Qxb3 14. axb3 Ng4 15. Rf3 a6 16. Nc4 e5 17. Nc2 Rd8 18. Rd3 exf4 19. Nb6 Rb8 20. Nxc8 Ne5 21. Ne7+ Kf8 22. Nd5 Nxd3 23. Bxd3 Be5 24. Ne1 h5 25. Nf3 Kg7 26. Rf1 f6 27. h4 Rbc8 28. Be2 Rf8 29. Rd1 Kh6 30. Kf2 g5 31. hxg5+ fxg5 32. Nxe5 dxe5 33. Rh1 h4 34. Ne7 Rcd8 35. Rd1 Rxd1 36. Bxd1 Rd8 37. Nd5 Rg8 38. Bg4 Rd8 39. Ke2 Kg7 40. c4 Rf8 41. Nc7 Kf6 42. Ne6 Re8 43. Nc5 Re7 44. b4 Re8 45. Kd3 Re7 46. Kc3 Kg7 47. Bc8 Kh6 48. Nxb7 Rxb7 49. Bxb7 f3 50. gxf3 h3 51. c5 h2 52. c6 h1Q 53. Kd2 Qg2+ 54. Kc1 Qf1+ 55. Kd2 Qf2+ 56. Kc1 Qe1+ 57. Kc2 Qxb4 58. Kb1 a5 0-1

[Event "Valladolid CC Social 04th"]
[Site "Valladolid"]
[Date "1975.11.13"]
[Round "4"]
[White "Liano Lopez Puig Cerver, Joaquin"]
[Black "Mendez Bayon, David"]
[Result "1/2-1/2"]
[ECO "A67"]
[PlyCount "60"]
[EventDate "1975.11.03"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Bd7 9. e5 dxe5 10. fxe5 Qe7 11. Nf3 0-0 12. 0-0 Ng4 13. d6 Qd8 14. Bg5 Qb6 15. Bxd7 Nxd7 16. Nd5 Qxb2 17. Rb1 Qxa2 18. Rxb7 Ndxe5 19. Nxe5 Nxe5 20. Nf6+ Kh8 21. Qe1 Nd3 22. Qh4 h5 23. Re7 Rab8 24. g4 Rb4 25. Qh3 Nf4 26. Bxf4 Bxf6 27. gxh5 g5 28. Be5 Bxe5 29. Rxe5 Ra4 30. Qg3 Qd2 1/2-1/2

[Event "Valladolid CC Social 04th"]
[Site "Valladolid"]
[Date "1975.11.10"]
[Round "3"]
[White "Mendez Bayon, David"]
[Black "Prieto Hernandez, Jesus"]
[Result "0-1"]
[ECO "C95"]
[PlyCount "86"]
[EventDate "1975.11.03"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Re1 d6 8. h3 0-0 9. c3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. a4 c5 13. d5 Re8 14. Nf1 Bf8 15. Ng3 g6 16. Bc2 Bg7 17. Be3 h6 18. a5 Rc8 19. Qd2 Kh7 20. Kh2 c4 21. Rg1 Nc5 22. Bxc5 Rxc5 23. Ne2 Kg8 24. g4 Nxd5 25. exd5 Bxd5 26. Qe3 Qf6 27. Be4 Bxe4 28. Qxe4 d5 29. Qe3 Rcc8 30. Kg2 d4 31. Qe4 d3 32. Ng3 Rc7 33. Rge1 Rce7 34. Qd5 Re6 35. Ne4 Qe7 36. Qc5 Qd7 37. Qe3 Qc8 38. Qc5 Rc6 39. Qe3 f5 40. gxf5 gxf5 41. Ned2 Rg6+ 42. Kh2 e4 43. Nh4 Qc7+ 0-1

[Event "Valladolid CC Social 04th"]
[Site "Valladolid"]
[Date "1975.11.06"]
[Round "2"]
[White "Abia Herra, Luis Maria"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "C45"]
[PlyCount "62"]
[EventDate "1975.11.03"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. c3 d6 6. Be3 Bb6 7. Bb5 Bd7 8. 0-0 Nf6 9. Nd2 0-0 10. Qa4 Nxd4 11. Bxd4 c6 12. Bxf6 Qxf6 13. Be2 Rad8 14. Rad1 Rfe8 15. Bf3 d5 16. Rfe1 Qh4 17. g3 Qh6 18. Qc2 Qg6 19. Nb3 h5 20. Nd4 Qf6 21. Bxh5 g6 22. Bf3 Bxd4 23. Rxd4 Qxf3 24. Re3 Qh5 25. f4 Bf5 26. Qg2 Bxe4 27. g4 Qh4 28. Rh3 Qe1+ 29. Qf1 Bb1 30. Qxe1 Rxe1+ 31. Kf2 Rde8 0-1

[Event "Valladolid CC Social 04th"]
[Site "Valladolid"]
[Date "1975.11.03"]
[Round "1"]
[White "Mendez Bayon, David"]
[Black "Garcia Martinez, Napoleon"]
[Result "1-0"]
[ECO "C21"]
[PlyCount "59"]
[EventDate "1975.11.03"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 c5 4. Bc4 Nf6 5. e5 Ng8 6. Nf3 d6 7. exd6 Bxd6 8. 0-0 h6 9. Qb3 Qc7 10. Re1+ Kf8 11. Na3 a6 12. cxd4 b5 13. Bd5 Ra7 14. dxc5 Bf4 15. Bxf4 Qxf4 16. Re4 Qf6 17. Rae1 Bd7 18. c6 Nxc6 19. Bxc6 Qxc6 20. Qb4+ Ne7 21. Rxe7 Kg8 22. Rxf7 Kh7 23. Qd4 Qg6 24. Rxd7 Rxd7 25. Qxd7 h5 26. h4 Rf8 27. Ng5+ Kg8 28. Qd5+ Kh8 29. Re6 Rf5 30. Qa8+ 1-0

[Event "Valladolid CC Social-B 04th"]
[Site "Valladolid"]
[Date "1975.10.31"]
[Round "6"]
[White "Abia Herra, Luis Maria"]
[Black "Mendez Bayon, David"]
[Result "1/2-1/2"]
[ECO "C89"]
[PlyCount "22"]
[EventDate "1975.10.13"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[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 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 1/2-1/2

[Event "Valladolid CC Social-B 04th"]
[Site "Valladolid"]
[Date "1975.10.29"]
[Round "6"]
[White "Mendez Bayon, David"]
[Black "Rivero Acedo, Jesus"]
[Result "0-1"]
[ECO "B51"]
[PlyCount "62"]
[EventDate "1975.10.13"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. c3 Bd7 5. d4 cxd4 6. cxd4 Nf6 7. Nc3 Qb6 8. Be3 Nxe4 9. d5 Nxc3 10. Bxb6 Nxd1 11. dxc6 bxc6 12. Be2 axb6 13. Bxd1 g6 14. Bb3 Bg7 15. Ng5 0-0 16. h4 Bxb2 17. Rb1 Bc3+ 18. Ke2 Ra5 19. f4 h5 20. Rbc1 Bg7 21. Ke3 c5 22. Rcf1 Bd4+ 23. Kd2 b5 24. f5 c4 25. fxg6 fxg6 26. Rxf8+ Kxf8 27. Rf1+ Bf6 28. Nh7+ Kg7 29. Nxf6 exf6 30. Bc2 Rxa2 31. Re1 Bf5 0-1

[Event "Valladolid CC Social-B 04th"]
[Site "Valladolid"]
[Date "1975.10.27"]
[Round "5"]
[White "Prieto Diego, Ceferino"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "A56"]
[PlyCount "48"]
[EventDate "1975.10.13"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nf3 cxd4 5. exd4 Bg7 6. Be3 0-0 7. Nc3 d6 8. h3 b6 9. Ne2 Bb7 10. Nf4 Nbd7 11. b3 e5 12. Ne2 Bxf3 13. gxf3 Nh5 14. Bg2 f5 15. f4 e4 16. h4 d5 17. cxd5 Ndf6 18. Ng3 Nxg3 19. fxg3 Nxd5 20. Qd2 Nxe3 21. Qxe3 Bxd4 22. Qc1 Bxa1 23. Qxa1 Qd3 24. Bf1 Qxg3+ 0-1

[Event "Valladolid CC Social-B 04th"]
[Site "Valladolid"]
[Date "1975.10.16"]
[Round "2"]
[White "Fernandez Lamadrid, Jose Luis"]
[Black "Mendez Bayon, David"]
[Result "0-1"]
[ECO "A01"]
[PlyCount "42"]
[EventDate "1975.10.13"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "ESP"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. Nf3 e4 4. Nd4 Nxd4 5. Bxd4 c5 6. Bb2 d5 7. e3 Bd7 8. d3 Nf6 9. Nd2 Be7 10. Rc1 Qa5 11. a4 0-0 12. Be2 Rad8 13. 0-0 Bc6 14. Qe1 a6 15. Nxe4 Qxe1 16. Nxf6+ Bxf6 17. Rcxe1 Bxb2 18. Bf3 f5 19. Rb1 Bc3 20. Rfd1 d4 21. Bxc6 bxc6 0-1

