[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.18"]
[Round "9"]
[White "Datu, Idelfonso"]
[Black "Martasyahbana, Ilham"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2457"]
[PlyCount "125"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. 0-0 c5 5. c4 Nc6 6. cxd5 exd5 7. d4 c4 8. Nc3 Bf5 9. Bg5 Be7 10. Ne5 Be6 11. Qa4 Qb6 12. Nxc6 bxc6 13. Bxf6 Bxf6 14. Nxd5 Bxd5 15. Bxd5 Rc8 16. Qxc4 0-0 17. Bf3 Bxd4 18. Rab1 Rfd8 19. b4 h6 20. e3 Bf6 21. Rfd1 Qb5 22. Rxd8+ Bxd8 23. Rc1 Rb8 24. Qxb5 cxb5 25. Kf1 Kf8 26. Ke2 a5 27. bxa5 Bxa5 28. Rb1 Bc3 29. Rb3 b4 30. a3 Ke7 31. axb4 Bxb4 32. Bd5 f6 33. Kd3 Bd6 34. Rxb8 Bxb8 35. e4 Be5 36. f4 Bb2 37. Ke3 g5 38. Kf3 Bd4 39. Kg4 gxf4 40. gxf4 Kf8 41. Kf5 Kg7 42. h4 Bc3 43. h5 Bd4 44. Ke6 Bc3 45. Bc6 Bb2 46. Be8 Bc3 47. Bg6 Bb2 48. e5 fxe5 49. fxe5 Bxe5 50. Kxe5 Kh8 51. Ke6 Kg7 52. Be8 Kh7 53. Kf6 Kh8 54. Kg6 Kg8 55. Kxh6 Kh8 56. Kg6 Kg8 57. Kf6 Kh8 58. Kf7 Kh7 59. Kf8 Kh8 60. Bf7 Kh7 61. Bg6+ Kh8 62. Be8 Kh7 63. Kf7 1/2-1/2

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.17"]
[Round "8"]
[White "Yu, Melvin"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "B01"]
[BlackElo "2457"]
[PlyCount "122"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Bc4 Nf6 5. d3 a6 6. Nge2 b5 7. Bb3 Bb7 8. f3 g6 9. Be3 Bg7 10. a3 Nbd7 11. Qd2 c5 12. Bh6 0-0 13. Bxg7 Kxg7 14. Ne4 Nxe4 15. fxe4 Qe5 16. 0-0-0 Nf6 17. Rdg1 Rfd8 18. Qe3 c4 19. Ba2 Rac8 20. Kb1 cxd3 21. cxd3 Qc5 22. Qxc5 Rxc5 23. b4 Rcc8 24. Rd1 Ng4 25. Rhf1 e6 26. Rc1 Nxh2 27. Rxc8 Bxc8 28. Rc1 Ng4 29. d4 Bb7 30. d5 exd5 31. exd5 Bxd5 32. Bxd5 Rxd5 33. Rc6 Re5 34. Nf4 Rf5 35. g3 Rf6 36. Rc7 Ne3 37. Ra7 h5 38. Ne2 g5 39. Re7 Nc4 40. Ka2 Re6 41. Rxe6 fxe6 42. Kb3 Kf6 43. a4 Ke5 44. a5 h4 45. gxh4 gxh4 46. Kc3 Ke4 47. Ng1 Ke3 48. Nh3 e5 49. Ng5 Kf4 50. Nh3+ Kg3 51. Ng5 h3 52. Nxh3 Kxh3 53. Kd3 Kg3 54. Ke4 Kf2 55. Kd5 Kf3 56. Kc6 e4 57. Kb7 e3 58. Kxa6 Nd6 59. Kb6 e2 60. a6 e1Q 61. a7 Nc8+ 0-1

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.15"]
[Round "7"]
[White "Datu, Idelfonso"]
[Black "Huang, Justin"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2457"]
[BlackElo "2060"]
[PlyCount "92"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 h6 3. Bh4 c6 4. c3 Bf5 5. e3 Qb6 6. Qb3 e6 7. Nf3 Nd7 8. Nbd2 Ngf6 9. Be2 Be7 10. 0-0 0-0 11. c4 Rfe8 12. Bg3 Nh5 13. Bh4 Nhf6 14. Bg3 Nh5 15. Bh4 Bh7 16. Bxe7 Rxe7 17. Bd3 Bxd3 18. Qxd3 Nhf6 19. b3 e5 20. dxe5 Nxe5 21. Nxe5 Rxe5 22. Nf3 dxc4 23. Qxc4 Rc5 24. Qe2 Rd8 25. Rac1 Rcd5 26. Rfd1 Qa5 27. Rxd5 Qxd5 28. h3 Ne4 29. Kf1 Qa5 30. Kg1 Nd2 31. Rd1 Nxf3+ 32. Qxf3 Rxd1+ 33. Qxd1 Qxa2 34. Qd8+ Kh7 35. Qd3+ g6 36. h4 a5 37. f3 Qa1+ 38. Kh2 Qe5+ 39. Kg1 Qd5 40. Qc3 b6 41. Kf2 Qb5 42. g4 a4 43. bxa4 Qxa4 44. Kg3 Qa5 45. Qf6 Qd5 46. Qb2 b5 0-1

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.14"]
[Round "5"]
[White "Datu, Idelfonso"]
[Black "Uteshev, Arsen"]
[Result "1/2-1/2"]
[ECO "A90"]
[WhiteElo "2457"]
[PlyCount "115"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. g3 d5 4. Bg2 Nf6 5. c4 c6 6. Nc3 Bd6 7. 0-0 0-0 8. Qd3 Ne4 9. Ne5 Bxe5 10. dxe5 Nd7 11. cxd5 exd5 12. f4 Ndc5 13. Qc2 a5 14. Kh1 Qe7 15. Be3 Ne6 16. Rad1 Nxc3 17. Qxc3 Qb4 18. Rd3 Qxc3 19. bxc3 b5 20. Rb1 Ba6 21. Rd2 Rfb8 22. Rdb2 Re8 23. h3 Kf7 24. g4 g6 25. Bf3 Ke7 26. Kg2 Red8 27. Kg3 Rg8 28. Kf2 Raf8 29. g5 h6 30. h4 hxg5 31. hxg5 Rh8 32. Rh1 Rxh1 33. Bxh1 Rh8 34. Bf3 Kd7 35. Kg3 Kc7 36. Rb1 Rh7 37. a4 Rh8 38. axb5 Bxb5 39. Bxd5 Nd8 40. Ba2 Bxe2 41. Bb6+ Kd7 42. Bxa5 Bg4 43. Rb2 Rh3+ 44. Kg2 Rf3 45. Rd2+ Kc8 46. Bxd8 Rxf4 47. e6 Re4 48. e7 f4 49. Bf7 Bd7 50. Bxg6 Re5 51. e8Q Bxe8 52. Bxe8 Rxe8 53. Bf6 Re3 54. Rf2 Rg3+ 55. Kh2 Rg4 56. Kh3 Rg1 57. Kh4 Kd7 58. Rxf4 1/2-1/2

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.14"]
[Round "6"]
[White "Marwan, Abdulwahab"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1985"]
[BlackElo "2457"]
[PlyCount "127"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. g3 Nf6 5. Bg2 a6 6. Nge2 Nc6 7. h3 e5 8. 0-0 Be7 9. d3 0-0 10. Kh2 Be6 11. f4 exf4 12. Bxf4 Qd7 13. Qd2 Bc5 14. Bg5 Nd5 15. Ne4 Be7 16. Bxe7 Qxe7 17. Ng5 h6 18. Nxe6 Qxe6 19. Nf4 Nxf4 20. Rxf4 Rae8 21. Raf1 Re7 22. c4 Qd7 23. Bd5 Nd8 24. R1f2 c6 25. Bg2 Ne6 26. Rg4 Kh8 27. Be4 Rd8 28. Rh4 Nf8 29. Rf6 Re6 30. Rxe6 Qxe6 31. Qa5 Re8 32. Rf4 Ng6 33. Rf2 Ne5 34. b3 g6 35. Qc3 Kg8 36. Bg2 Nd7 37. d4 Qd6 38. d5 Ne5 39. c5 Qe7 40. d6 Qe6 41. Qd2 Kg7 42. Qd4 f6 43. Rf4 Rd8 44. Re4 Rd7 45. Qa4 Qf5 46. Qd4 Qe6 47. Qb2 Rd8 48. Qe2 Rd7 49. h4 Qd5 50. Rc4 Qd3 51. Qxd3 Nxd3 52. Rc3 Ne5 53. Bh3 f5 54. h5 Ng4+ 55. Bxg4 fxg4 56. hxg6 Kxg6 57. Re3 Kf6 58. Re4 h5 59. Kg2 Rh7 60. b4 Rd7 61. a4 Rh7 62. Re8 Kg6 63. Re6+ Kf5 64. Re7 1-0

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.13"]
[Round "4"]
[White "Wee, Zhen Chian"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "B01"]
[BlackElo "2457"]
[PlyCount "58"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Bd3 a6 6. Nge2 b5 7. Bf4 Qb6 8. Qd2 e6 9. 0-0 Bb7 10. f3 c5 11. Kh1 Nbd7 12. dxc5 Bxc5 13. Ne4 0-0 14. b4 Be7 15. a3 Rac8 16. Rac1 Rfd8 17. c4 bxc4 18. Be3 Qb5 19. Nd4 Qd5 20. Bb1 Ne5 21. Rfd1 Nd3 22. Bxd3 cxd3 23. Rxc8 Rxc8 24. Nf2 Qh5 25. Qxd3 Bd6 26. Nh3 Nd5 27. Ne2 Qg6 28. Qxg6 hxg6 29. Rd3 Rc2 1/2-1/2

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.12"]
[Round "2"]
[White "Apurva, Abhyankar"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1886"]
[BlackElo "2457"]
[PlyCount "83"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 c6 6. Be2 Bg4 7. Be3 Nbd7 8. Qd2 e6 9. 0-0 Qc7 10. Bf4 Bd6 11. Bxd6 Qxd6 12. Rfe1 0-0 13. a3 Rfd8 14. Rad1 b5 15. Qe3 Nb6 16. Ne5 Bf5 17. Bd3 Nfd5 18. Nxd5 Nxd5 19. Qf3 f6 20. Bxf5 exf5 21. Nd3 g6 22. Re2 Re8 23. Rde1 Kf7 24. c3 a5 25. g3 Rab8 26. Nc5 Nc7 27. Qd3 Qd5 28. Qc2 Rxe2 29. Rxe2 Re8 30. Rxe8 Kxe8 31. Qe2+ Kf7 32. Qe3 g5 33. h4 h6 34. Qe2 Ne6 35. Nxe6 Qxe6 36. Qxe6+ Kxe6 37. Kf1 Kd5 38. Ke2 Kc4 39. Kd2 Kb3 40. Kc1 f4 41. Kb1 f5 42. h5 0-1

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.12"]
[Round "3"]
[White "Datu, Idelfonso"]
[Black "Bakri, Anas Nazreen"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2457"]
[BlackElo "2107"]
[PlyCount "67"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 c6 3. c3 Bf5 4. e3 Nd7 5. Nf3 Ngf6 6. Be2 e6 7. Nbd2 Be7 8. 0-0 h6 9. Bf4 0-0 10. h3 Qb6 11. b4 a5 12. a3 axb4 13. axb4 Ra7 14. Nb3 Ne4 15. Qc1 Rfa8 16. Qb2 Qd8 17. Nfd2 b6 18. Rxa7 Rxa7 19. Ra1 Qa8 20. Nxe4 Bxe4 21. Rxa7 Qxa7 22. Nd2 Bg6 23. c4 Qa4 24. b5 dxc4 25. bxc6 Qxc6 26. Bxc4 Nf6 27. Be5 Ne4 28. Bd3 Nxd2 29. Qxd2 Bxd3 30. Qxd3 f6 31. Bf4 Bd6 32. Bxd6 Qxd6 33. Qb5 Kh7 34. Kf1 1/2-1/2

[Event "Asia-ch U14"]
[Site "Singapore"]
[Date "2004.12.11"]
[Round "1"]
[White "Datu, Idelfonso"]
[Black "Marco Polo, Rosete"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2457"]
[PlyCount "102"]
[EventDate "2004.12.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SIN"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 Bg7 5. Nc3 d6 6. e3 0-0 7. g3 Re8 8. Bg2 c6 9. Nge2 Nd7 10. 0-0 f5 11. Qd3 Nf6 12. b4 Bd7 13. Rfb1 a6 14. a4 Rb8 15. a5 Qe7 16. Ra3 h6 17. Rab3 Be6 18. Nf4 Rec8 19. Nxe6 fxe6 20. b5 Nd7 21. bxc6 bxc6 22. Rxb8 Nxb8 23. Na4 e5 24. e4 f4 25. dxe5 Bxe5 26. c5 Rf8 27. cxd6 Qf6 28. d7 fxg3 29. fxg3 Bd4+ 30. Kh1 Nxd7 31. Rf1 Qe5 32. Rxf8+ Kxf8 33. Qxa6 Ke7 34. Nb6 Bxb6 35. axb6 Qb2 36. h4 Qxb6 37. Qa3+ c5 38. Qc3 Qf6 39. Qe3 h5 40. Bh3 c4 41. Bxd7 Qa1+ 42. Kg2 Kxd7 43. Qd2+ Kc7 44. Qf4+ Kc6 45. Qf7 Qb2+ 46. Kh3 Qe5 47. Qxc4+ Kd6 48. Qb4+ Ke6 49. Qb6+ Kf7 50. Qb7+ Kf6 51. Kg2 Qe6 1/2-1/2

[Event "Asia Cities-ch 14th"]
[Site "Tagaytay City"]
[Date "2004.03.27"]
[Round "9.2"]
[White "Mallahi, Amir"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "2378"]
[BlackElo "2443"]
[PlyCount "38"]
[EventDate "2004.03.21"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]
[WhiteTeam "Tehran"]
[BlackTeam "Mandaluyong"]
[WhiteTeamCountry "IRI"]
[BlackTeamCountry "PHI"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Be7 7. Be3 0-0 8. Qf3 Nc6 9. c5 Nd7 10. 0-0-0 Bg5 11. cxd6 cxd6 12. Bd3 Bxe3+ 13. fxe3 Nf6 14. h3 Nb4 15. Bb1 Qe7 16. e4 Be6 17. d5 Bc8 18. Nge2 a5 19. Nd4 Nd7 0-1

[Event "Asia Cities-ch 14th"]
[Site "Tagaytay City"]
[Date "2004.03.25"]
[Round "7.2"]
[White "Nolte, Rolando"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "B05"]
[WhiteElo "2389"]
[BlackElo "2443"]
[PlyCount "102"]
[EventDate "2004.03.21"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]
[WhiteTeam "Tanauan"]
[BlackTeam "Mandaluyong"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "PHI"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. c4 Nb6 8. Nc3 0-0 9. Be3 Nc6 10. exd6 cxd6 11. b3 d5 12. c5 Nc8 13. b4 Bxf3 14. Bxf3 Bf6 15. Rb1 N8e7 16. b5 Na5 17. Be2 Nf5 18. Bd3 Nxd4 19. Bxd4 Bxd4 20. Bxh7+ Kxh7 21. Qxd4 Rc8 22. Rfe1 Qf6 23. Qb4 Nc4 24. Ne4 Qe7 25. Nd6 Nxd6 26. cxd6 Qd7 27. Qh4+ Kg8 28. Rb3 Rc4 29. Qh5 Qxd6 30. Rh3 f6 31. Qh7+ Kf7 32. Qh5+ Ke7 33. Qh7 Rf7 34. Qg8 Qc7 35. Rh8 Kd6 36. g3 e5 37. Qa8 b6 38. Rd1 d4 39. h4 Qb7 40. Qd8+ Kc5 41. Rb1 Rb4 42. Rc1+ Kxb5 43. a3 Rb2 44. Qe8+ Rd7 45. Rf8 Ka5 46. Qe6 Qf3 47. Rf1 Rc7 48. Rf7 Rxf2 49. Qxe5+ fxe5 50. Rxf3 Rxf3 51. Rxf3 Rc3 0-1

[Event "Asia Cities-ch 14th"]
[Site "Tagaytay City"]
[Date "2004.03.24"]
[Round "5.3"]
[White "Dableo, Ronald"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2426"]
[BlackElo "2443"]
[PlyCount "235"]
[EventDate "2004.03.21"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]
[WhiteTeam "Tagaytay"]
[BlackTeam "Mandaluyong"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "PHI"]

1. c4 e6 2. e3 Nf6 3. Nf3 b6 4. b3 Bb7 5. Bb2 Be7 6. d3 0-0 7. Be2 c5 8. 0-0 d5 9. Nbd2 Nc6 10. a3 Qc7 11. Rc1 dxc4 12. Nxc4 Rad8 13. Qc2 Nd5 14. Rfe1 Qb8 15. Qb1 Rfe8 16. Bf1 Bf8 17. Qa1 f6 18. Ncd2 e5 19. Rc2 a5 20. Rec1 Qa8 21. Nc4 Qa7 22. g3 a4 23. bxa4 Na5 24. Nfd2 Nc6 25. Qb1 Ba8 26. Ba1 Kh8 27. Bg2 Na5 28. Bxd5 Rxd5 29. Qxb6 Qxb6 30. Nxb6 Rxd3 31. Bc3 Nc6 32. Ne4 Nd4 33. Nxa8 Nxc2 34. Nc7 Rc8 35. Nb5 Nd4 36. Bxd4 exd4 37. exd4 c4 38. Nc5 Rd2 39. Rxc4 Rb2 40. Kg2 Kg8 41. h4 Kf7 42. Rc3 Re8 43. Nd3 Rd2 44. Kf3 Ra8 45. Ke3 Rd1 46. d5 Rxa4 47. Rc7+ Kg6 48. Nc3 Rxd3+ 49. Kxd3 Rxa3 50. Ke2 Kf5 51. Rc4 h5 52. f3 Rb3 53. g4+ hxg4 54. fxg4+ Ke5 55. Re4+ Kd6 56. Kd3 Kd7 57. Kc2 Rb8 58. Ra4 Kd6 59. Kd3 f5 60. Kd4 fxg4 61. Ne4+ Kc7 62. Ra7+ Kb6 63. Rf7 Re8 64. Rf4 Ba3 65. Rxg4 Bb2+ 66. Kd3 Rd8 67. Kc4 Rc8+ 68. Kb4 Rc1 69. Rg6+ Kc7 70. Kb5 Kd8 71. Ra6 Be5 72. Nc5 Bg3 73. d6 Bxd6 74. Rxd6+ Ke7 75. Rg6 Kf7 76. Rg4 Kf6 77. Nd3 Rh1 78. Kc4 Kf5 79. Rf4+ Kg6 80. Ne5+ Kh5 81. Nf3 Rd1 82. Kc3 Rd8 83. Ng5 Rd1 84. Kc2 Rg1 85. Nf3 Rg6 86. Kd3 Re6 87. Ng5 Re1 88. Kd2 Re8 89. Ne4 Ra8 90. Ke2 Ra2+ 91. Kf3 Ra3+ 92. Kg2 Ra2+ 93. Kh3 Ra3+ 94. Ng3+ Kh6 95. Kg4 g6 96. Re4 Ra6 97. Ne2 Ra1 98. Re6 Kg7 99. Ng3 Ra4+ 100. Ne4 Ra1 101. Re7+ Kh6 102. Re5 Rg1+ 103. Kf3 Rh1 104. Kg3 Rg1+ 105. Kh2 Ra1 106. Nf2 Ra4 107. Kg3 Ra3+ 108. Kf4 Ra4+ 109. Ne4 Ra1 110. Kg4 Rg1+ 111. Ng3 Ra1 112. Re6 Kg7 113. Ne2 Kf7 114. Rd6 Re1 115. Rd2 Ra1 116. Nf4 Rg1+ 117. Rg2 Rf1 118. Kg5 1-0

[Event "Asia Cities-ch 14th"]
[Site "Tagaytay City"]
[Date "2004.03.24"]
[Round "6.3"]
[White "Faraj, Yahya Saleh"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "2221"]
[BlackElo "2443"]
[PlyCount "124"]
[EventDate "2004.03.21"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]
[WhiteTeam "Sanaa"]
[BlackTeam "Mandaluyong"]
[WhiteTeamCountry "YEM"]
[BlackTeamCountry "PHI"]

1. Nf3 d5 2. c4 e6 3. e3 Nf6 4. d4 c6 5. Bd3 Nbd7 6. 0-0 Be7 7. Nc3 0-0 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Nf6 11. Bc2 c5 12. dxc5 Bxc5 13. Bg5 h6 14. Bh4 b6 15. Qxd8 Rxd8 16. Be4 Rb8 17. Bg3 Bd6 18. Bc2 Bxg3 19. hxg3 Ba6 20. b3 b5 21. cxb5 Bxb5 22. Rfd1 Be2 23. Rxd8+ Rxd8 24. Rc1 g6 25. Bb1 Kg7 26. Re1 Bxf3 27. gxf3 Rd2 28. Rc1 Rb2 29. Kg2 h5 30. Bd3 Rxa2 31. Bb5 Nd5 32. Ba4 g5 33. Kg1 h4 34. gxh4 gxh4 35. Rc4 h3 36. Rh4 h2+ 37. Kxh2 Rxf2+ 38. Kg3 Rc2 39. Rd4 Kf6 40. Bb5 Ke5 41. Ra4 Rc7 42. Bd3 Nb6 43. Re4+ Kd5 44. Re1 Kd4 45. Rd1 Kc5 46. Rc1+ Kd6 47. Rxc7 Kxc7 48. Kf4 Kd6 49. Ke3 Kc5 50. Kd2 Kd4 51. Bh7 f5 52. Bg8 e5 53. Bh7 f4 54. Bf5 a5 55. Be4 Nd7 56. Bg6 Nc5 57. Bc2 Ne6 58. Be4 Ng5 59. Bb7 e4 60. fxe4 Nxe4+ 61. Kc2 f3 62. Kb2 f2 0-1

[Event "Asia Cities-ch 14th"]
[Site "Tagaytay City"]
[Date "2004.03.23"]
[Round "4.3"]
[White "Datu, Idelfonso"]
[Black "Yu, Shaoteng"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2443"]
[BlackElo "2490"]
[PlyCount "107"]
[EventDate "2004.03.21"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]
[WhiteTeam "Mandaluyong"]
[BlackTeam "Guangzhou"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "CHN"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. 0-0 Be7 5. d4 0-0 6. c4 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bg5 Nbd7 11. Bxf6 Nxf6 12. Nbd2 Rc8 13. Nb3 Be4 14. Qc3 Bd5 15. Rac1 c5 16. dxc5 Nd7 17. Qe3 Bxf3 18. exf3 Bf6 19. Rfd1 Qc7 20. Rd2 Ne5 21. Bf1 Nc6 22. f4 Rfd8 23. a3 Rxd2 24. Qxd2 Rd8 25. Qc2 g6 26. Bg2 Nd4 27. Nxd4 Rxd4 28. c6 Rc4 29. Qd2 Rxc1+ 30. Qxc1 Bd4 31. Qd2 Bb6 32. a4 bxa4 33. h4 h5 34. Qb4 Qd8 35. Qxa4 Qd2 36. Kh2 Qxb2 37. Qxa6 Qd4 38. Qb7 Qc5 39. Qb8+ Kg7 40. Qe5+ Qxe5 41. fxe5 Kf8 42. Be4 Ke7 43. f4 Kd8 44. Kg2 Bc7 45. Bd3 Ke7 46. Ba6 Kd8 47. g4 hxg4 48. Kg3 Ke7 49. Kxg4 Kf8 50. Kg5 Bb6 51. Bd3 Ba5 52. Bxg6 fxg6 53. Kxg6 Ke7 54. h5 1-0

[Event "Asia Cities-ch 14th"]
[Site "Tagaytay City"]
[Date "2004.03.22"]
[Round "3.3"]
[White "Datu, Idelfonso"]
[Black "Ibrayev, Nurlan"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2443"]
[BlackElo "2427"]
[PlyCount "109"]
[EventDate "2004.03.21"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]
[WhiteTeam "Mandaluyong"]
[BlackTeam "Pavlodar"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "KAZ"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. 0-0 Nc6 5. d3 e6 6. e4 Nge7 7. Nbd2 d6 8. Re1 0-0 9. a4 h6 10. Nc4 e5 11. c3 Be6 12. Rb1 f5 13. Na3 Qd7 14. b4 b6 15. b5 Na5 16. exf5 gxf5 17. Nh4 Rae8 18. c4 d5 19. Bd2 Nb7 20. cxd5 Bxd5 21. Nc4 Bxg2 22. Nxg2 Ng6 23. Qh5 Kh7 24. Rbd1 Nd6 25. Bc3 Qe6 26. f4 Nxc4 27. dxc4 Qxc4 28. Bxe5 Qf7 29. Bxg7 Kxg7 30. Ne3 Kh7 31. Kf2 Re6 32. Re2 Rfe8 33. Rde1 Rf8 34. Kf1 Re4 35. Ng2 Rxe2 36. Rxe2 Qc4 37. Ne3 Qd3 38. Kf2 Rf7 39. Qf3 Rd7 40. Qc6 Ne7 41. Qf6 Qd4 42. Qf7+ Qg7 43. Qe6 Qd4 44. Kf3 Qe4+ 45. Qxe4 fxe4+ 46. Kxe4 Rd4+ 47. Ke5 Rxa4 48. Rd2 Kg7 49. Rd7 Kf8 50. f5 Ke8 51. Rb7 a6 52. f6 Ng6+ 53. Kf5 Nf8 54. bxa6 Rxa6 55. Nd5 1-0

[Event "Asia Cities-ch 14th"]
[Site "Tagaytay City"]
[Date "2004.03.22"]
[Round "2.3"]
[White "Sitanggang, Salor"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "2407"]
[BlackElo "2443"]
[PlyCount "43"]
[EventDate "2004.03.21"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]
[WhiteTeam "Jakarta"]
[BlackTeam "Mandaluyong"]
[WhiteTeamCountry "INA"]
[BlackTeamCountry "PHI"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 dxc4 8. Bxc4 e5 9. 0-0 0-0 10. h3 Qe7 11. Bb3 Re8 12. Ng5 Rf8 13. Nf3 Re8 14. Bd2 h6 15. Nh4 Nf8 16. Nf5 Bxf5 17. Qxf5 Rad8 18. Rad1 Qd7 19. Qxd7 N6xd7 20. dxe5 Nxe5 21. Bc2 Ne6 22. Bc1 1/2-1/2

[Event "Sea Chess-chT 1st"]
[Site "Kuala Lumpur"]
[Date "2001.09.08"]
[Round "4"]
[White "Nay, Oo Kyaw Tun"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2515"]
[BlackElo "2445"]
[PlyCount "36"]
[EventDate "2001.09.05"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MAS"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. 0-0 Be7 7. e5 Ne4 8. Nxd4 Nxd4 9. Qxd4 Nc5 10. Nc3 Nxa4 11. Qxa4 0-0 12. Rd1 f6 13. Qc4+ Kh8 14. Nd5 c6 15. Nxe7 Qxe7 16. exf6 Qxf6 17. Qd4 Qxd4 18. Rxd4 d5 1/2-1/2

[Event "Sea Chess-chT 1st"]
[Site "Kuala Lumpur"]
[Date "2001.09.07"]
[Round "3"]
[White "Jiravorasuk, Banjuab"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "D52"]
[WhiteElo "2269"]
[BlackElo "2445"]
[PlyCount "80"]
[EventDate "2001.09.05"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MAS"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bg5 c6 6. e3 Qa5 7. Nd2 Bb4 8. Qc2 dxc4 9. Bxf6 Nxf6 10. Nxc4 Qd5 11. 0-0-0 Bxc3 12. Qxc3 0-0 13. Kb1 Qf5+ 14. Bd3 Qxf2 15. Rdf1 Qh4 16. Rf3 Nd5 17. Qd2 f5 18. Ne5 Qe7 19. a3 Bd7 20. Bc4 Qd6 21. Rhf1 Rad8 22. Qf2 Rf6 23. Qh4 Rdf8 24. Ka1 Be8 25. h3 c5 26. g4 fxg4 27. Bd3 h5 28. hxg4 Rxf3 29. Rxf3 Rxf3 30. Nxf3 Nxe3 31. gxh5 Nf5 32. Bxf5 exf5 33. Qe1 Bxh5 34. dxc5 Qxc5 35. Ng5 Bf7 36. Qh1 Qd5 37. Qh7+ Kf8 38. Qh8+ Bg8 39. Nh7+ Kf7 40. Ng5+ Kg6 0-1

[Event "Sea Chess-chT 1st"]
[Site "Kuala Lumpur"]
[Date "2001.09.06"]
[Round "2"]
[White "Wong, Zi Jing"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "2267"]
[BlackElo "2445"]
[PlyCount "68"]
[EventDate "2001.09.05"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MAS"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 e5 3. Bc4 Nc6 4. d3 Bb4 5. Nge2 d5 6. exd5 Nxd5 7. 0-0 Be6 8. Bb5 0-0 9. Bxc6 bxc6 10. Ne4 Be7 11. d4 f5 12. N4g3 f4 13. Ne4 f3 14. gxf3 Bh3 15. dxe5 Bxf1 16. Qxf1 Nb4 17. Nf4 Rf5 18. Qc4+ Kh8 19. Bd2 Nd5 20. Ne6 Qd7 21. Nd4 Rxe5 22. Nxc6 Re6 23. Nxe7 Nxe7 24. Bc3 Rg6+ 25. Ng3 Nd5 26. Be5 c6 27. Re1 Rf8 28. Qe4 Qh3 29. c4 Ne7 30. Bf4 Nf5 31. Qe8 Kg8 32. Qd7 h5 33. Re8 Rxe8 34. Qxe8+ Kh7 0-1

[Event "Sea Chess-chT 1st"]
[Site "Kuala Lumpur"]
[Date "2001.09.05"]
[Round "1"]
[White "Tu, Hoang Thong"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2510"]
[BlackElo "2445"]
[PlyCount "124"]
[EventDate "2001.09.05"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MAS"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 dxc4 5. Bg2 a6 6. Ne5 c5 7. dxc5 Qxd1+ 8. Kxd1 Bxc5 9. e3 Ra7 10. Nxc4 b5 11. Na5 e5 12. Nd2 Bg4+ 13. Bf3 Bxf3+ 14. Nxf3 Rd7+ 15. Ke2 Bb6 16. Nb3 Nc6 17. Bd2 e4 18. Nh4 Rd5 19. Bc3 Ke7 20. Rhd1 Rhd8 21. Rxd5 Rxd5 22. Re1 Kd7 23. Ng2 Ne8 24. Nf4 Rd6 25. g4 g5 26. Nh5 Re6 27. Rd1+ Ke7 28. Rd5 h6 29. Nc5 Bxc5 30. Rxc5 Kd7 31. b3 Kd6 32. Rf5 Ke7 33. a4 bxa4 34. bxa4 Nd6 35. Rd5 Ne8 36. Bb2 Rd6 37. Rc5 Kd7 38. h3 Rd3 39. Ng3 Rb3 40. Bc3 Nd6 41. Bg7 Rb4 42. Bxh6 f6 43. Bf8 Rxa4 44. Bxd6 Kxd6 45. Rf5 Ke6 46. Nh5 Ra2+ 47. Kf1 Ra1+ 48. Kg2 Ne5 49. Rxf6+ Ke7 50. h4 Nxg4 51. Rf5 gxh4 52. Rf4 Ra5 53. Rxe4+ Re5 54. Rxg4 Rxh5 55. Kh3 Rf5 56. f4 a5 57. Kxh4 a4 58. Rg7+ Rf7 59. Rg5 Kf6 60. Ra5 Re7 61. Rxa4 Rxe3 62. Kg4 Re6 1/2-1/2

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.30"]
[Round "11"]
[White "Datu, Idelfonso"]
[Black "Liang, Jinrong"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2445"]
[BlackElo "2510"]
[PlyCount "71"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Nc3 b5 11. Qd3 b4 12. Nb1 Be4 13. Qd1 c5 14. Nbd2 Bd5 15. dxc5 Nbd7 16. Nd4 Bxg2 17. Kxg2 Nxc5 18. N2f3 Qd5 19. Nc2 Nb3 20. Qxd5 Nxd5 21. Rb1 Nb6 22. Ncd4 Nxd4 23. Nxd4 Nxa4 24. Nc6 Bc5 25. Ra1 Nb6 26. Ra5 Bd6 27. Rd1 Nc4 28. Ra4 Rfc8 29. Rxd6 Nxd6 30. Ne7+ Kf8 31. Nxc8 Rxc8 32. Bf4 Nc4 33. Rxb4 e5 34. Bc1 Rc6 35. b3 Nd6 36. Rb8+ 1/2-1/2

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.29"]
[Round "10"]
[White "Xu, Yaping"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2050"]
[BlackElo "2445"]
[PlyCount "22"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. a4 Rb8 8. c3 d6 9. axb5 axb5 10. d4 Bb6 11. Na3 b4 1/2-1/2

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.28"]
[Round "9"]
[White "Datu, Idelfonso"]
[Black "Ni, Hua"]
[Result "0-1"]
[ECO "D77"]
[WhiteElo "2445"]
[BlackElo "2568"]
[PlyCount "64"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 d5 5. d4 0-0 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. Nce5 Bd5 10. Bf4 Nxe5 11. Bxe5 c6 12. Qc2 Qb6 13. Ne1 Bxg2 14. Kxg2 Rfd8 15. Nd3 Bf8 16. Bxf6 exf6 17. e3 Qb5 18. Rfc1 Qf5 19. Kg1 h5 20. Nf4 Qd7 21. Qb3 Kg7 22. Rd1 h4 23. d5 c5 24. e4 Bd6 25. Qf3 Rh8 26. Rac1 hxg3 27. hxg3 Rh6 28. Kg2 Rah8 29. Rh1 Rxh1 30. Rxh1 Rxh1 31. Kxh1 Qa4 32. a3 Qc2 0-1

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.27"]
[Round "8"]
[White "Zhang, Pengxiang"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2487"]
[BlackElo "2445"]
[PlyCount "157"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Be3 0-0 9. Nxc6 bxc6 10. Bxc5 Nxc5 11. Bxc6 Rb8 12. 0-0 Rxb2 13. Bxd5 Bf5 14. Na3 Bd3 15. Bxf7+ Rxf7 16. cxd3 Qd4 17. Nc2 Qxd3 18. Rc1 Qxd1 19. Rfxd1 Ne6 20. a3 Rf5 21. Rd5 Rf4 22. g3 Rc4 23. Rd2 g5 24. Kg2 Rc5 25. Kf1 Rxe5 26. Rcd1 Rc5 27. Nb4 Rxd2 28. Rxd2 a5 29. Nd5 Kf7 30. Kg2 Rc4 31. Ne3 Rd4 32. Rb2 Rd3 33. Nc4 Rc3 34. Nxa5 Rxa3 35. Nc4 Rc3 36. Ne3 Rd3 37. Kf3 Rd4 38. h3 Kf6 39. Ra2 Rd7 40. Ra6 Rd6 41. Ra2 Kg6 42. Ke4 Nc5+ 43. Kf3 Rf6+ 44. Kg2 Rd6 45. Ra7 Ne6 46. Kf3 h5 47. Ra5 Nd4+ 48. Kg2 Ne6 49. h4 g4 50. Re5 c5 51. Kf1 Ra6 52. Ke1 Ra1+ 53. Kd2 Ra2+ 54. Kd3 Ng7 55. Nd1 Ra1 56. Nc3 Ra5 57. Kc4 Ra1 58. Rg5+ Kh6 59. Rxc5 Rf1 60. Ne4 Rc1+ 61. Kd5 Rxc5+ 62. Nxc5 Kg6 63. Ne6 Nf5 64. Nf4+ Kh6 65. Ke5 Ne7 66. Kf6 Nc8 67. Ke6 Nb6 68. Nd3 Nc4 69. Ne5 Nb2 70. Kf6 Nd1 71. Nf7+ Kh7 72. Ng5+ Kh6 73. Ne4 Nb2 74. Nd6 Nd3 75. Nf5+ Kh7 76. Kg5 Nxf2 77. Kxh5 Kh8 78. Kg5 Kh7 79. Ne3 1-0

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.25"]
[Round "6"]
[White "Wang, Zili"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2557"]
[BlackElo "2445"]
[PlyCount "83"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Bg4 8. c4 Nf6 9. Nc3 Be7 10. cxd5 Nxd5 11. Be4 Nf6 12. Bxc6+ bxc6 13. Qd3 c5 14. d5 0-0 15. Re1 h6 16. Ne5 Bd6 17. h3 Bd7 18. Qf3 Rb8 19. b3 Rb4 20. Nc4 Re8 21. Rxe8+ Bxe8 22. Bb2 Rb8 23. Re1 Bf8 24. Bc1 Bb5 25. Ne5 Be8 26. Bf4 a5 27. Ng4 Nxg4 28. Qxg4 Rb4 29. Qg3 Bd6 30. Be5 Bxe5 31. Qxe5 Kf8 32. Qf5 Kg8 33. Qe5 Kf8 34. Re3 Rd4 35. Rg3 f6 36. Qf5 g6 37. Qc2 Bf7 38. Kh2 Kg7 39. Kg1 g5 40. Re3 c4 41. bxc4 Rxc4 42. Qd3 1/2-1/2

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.24"]
[Round "5"]
[White "Wang, Pin"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2504"]
[BlackElo "2445"]
[PlyCount "81"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. c4 d5 6. Nc3 Bc5 7. d4 Bb4 8. Qb3 Qe7 9. Be3 dxc4 10. Bxc4 Bxc3+ 11. bxc3 Nd6 12. 0-0 0-0 13. Bg5 Qd7 14. Ne5 Qf5 15. Be7 Nxc4 16. Qxc4 Re8 17. Qxc7 Na6 18. Qd6 Qe6 19. Qxe6 Bxe6 20. Ba3 f6 21. Nf3 Nc7 22. Rfe1 Nb5 23. Bb2 Nd6 24. Nd2 Bd5 25. a4 Nc4 26. Nxc4 Bxc4 27. Re3 Kf7 28. a5 Re6 29. Rxe6 Kxe6 30. Ba3 Kd7 31. Bc5 Kc6 32. h4 g6 33. Rb1 Bd5 34. Rb4 Be4 35. c4 Bd3 36. Be7 f5 37. d5+ Kc7 38. c5 Be4 39. Bd6+ Kc8 40. Rd4 b6 41. c6 1-0

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.23"]
[Round "4"]
[White "Datu, Idelfonso"]
[Black "Liang, Chong"]
[Result "1/2-1/2"]
[ECO "E09"]
[WhiteElo "2445"]
[BlackElo "2556"]
[PlyCount "62"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. d4 c6 7. Nbd2 Nbd7 8. b3 b5 9. Qc2 Ba6 10. c5 b4 11. Re1 Bb5 12. Bb2 a5 13. a3 Qc7 14. axb4 axb4 15. e3 Qb7 16. Rxa8 Rxa8 17. Ra1 Rxa1+ 18. Bxa1 Qa6 19. Bb2 Bd3 20. Qc1 Ne4 21. Ne1 f5 22. f3 Bg5 23. f4 Bf6 24. Nxe4 fxe4 25. Qd2 Qa2 26. Nxd3 exd3 27. Bc1 Qxd2 28. Bxd2 Nxc5 29. dxc5 Bc3 30. Kf2 Bxd2 31. Bf1 Kf7 1/2-1/2

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.22"]
[Round "3"]
[White "Wu, Wenjin"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "D52"]
[WhiteElo "2560"]
[BlackElo "2445"]
[PlyCount "46"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 c6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 Bb4 8. Qc2 dxc4 9. Bxf6 Nxf6 10. Nxc4 Qd5 11. Nd2 Bxc3 12. bxc3 Qh5 13. Bd3 0-0 14. Ne4 Nxe4 15. Bxe4 f5 16. Bd3 Qe8 17. f4 Qe7 18. 0-0 c5 19. Rad1 Bd7 20. e4 cxd4 21. cxd4 Rac8 22. Qb3 fxe4 23. Bxe4 Bc6 1/2-1/2

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.21"]
[Round "2"]
[White "Datu, Idelfonso"]
[Black "Li, Shilong"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2445"]
[BlackElo "2486"]
[PlyCount "83"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. 0-0 Bg4 5. d4 Nbd7 6. b3 e6 7. Bb2 Bd6 8. Nbd2 Qc7 9. c4 0-0 10. a3 a5 11. Rc1 Rfe8 12. Qe1 Qb8 13. Qd1 h6 14. Re1 Bf5 15. Nh4 Bh7 16. f4 b5 17. c5 Be7 18. Nhf3 Ne4 19. Nxe4 dxe4 20. Ne5 Qc7 21. Qc2 f5 22. a4 b4 23. Qc4 Bf8 24. g4 g6 25. h4 Nf6 26. g5 Nd5 27. e3 Bg7 28. Kf2 Bxe5 29. dxe5 Kg7 30. Bd4 Bg8 31. Rh1 Bf7 32. Bf1 Rh8 33. Be2 Be8 34. Qc2 Rd8 35. Kg3 Bd7 36. Bc4 Bc8 37. Qe2 Qd7 38. Rcg1 Qf7 39. Rd1 Qe7 40. Rdg1 Rh7 41. Rh2 Nc7 42. Kf2 1/2-1/2

[Event "Zhong Hong Real Estate Cup"]
[Site "Beijing"]
[Date "2001.07.20"]
[Round "1"]
[White "Mas, Hafizulhelmi"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "2456"]
[BlackElo "2445"]
[PlyCount "14"]
[EventDate "2001.07.20"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "10"]
[SourceTitle "CBM 085"]
[Source "ChessBase"]
[SourceDate "2001.11.13"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.13"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. 0-0 e5 6. Nc3 Nge7 7. d3 0-0 1/2-1/2

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.30"]
[Round "9"]
[White "Adianto, Utut"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "D48"]
[WhiteElo "2589"]
[BlackElo "2381"]
[PlyCount "59"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. e4 c5 10. d5 c4 11. Bc2 Bb7 12. 0-0 e5 13. Nh4 b4 14. Na4 Nxe4 15. Bxe4 Qxh4 16. Bf5 Rd8 17. Bxd7+ Kxd7 18. Nb6+ Kc7 19. Be3 Rd6 20. Nxc4 Rxd5 21. Qa4 Be7 22. Na5 Kb8 23. Nxb7 Kxb7 24. Rac1 Rb5 25. Rc6 Kxc6 26. Qxa6+ Kd5 27. Rd1+ Ke4 28. Qxb5 Kf5 29. Rd4 Rd8 30. g4+ 1-0

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.29"]
[Round "8"]
[White "Datu, Idelfonso"]
[Black "Nguyen, Thanh Son"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2381"]
[BlackElo "2200"]
[PlyCount "11"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d5 6. Nbd2 1/2-1/2

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.28"]
[Round "7"]
[White "Ranola, Yves"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2422"]
[BlackElo "2381"]
[PlyCount "6"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 1/2-1/2

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.27"]
[Round "5"]
[White "Datu, Idelfonso"]
[Black "Kosasih, Cecep"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2381"]
[BlackElo "2420"]
[PlyCount "79"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. 0-0 e6 5. b3 h6 6. c4 Nf6 7. Bb2 Be7 8. d4 0-0 9. Nc3 Nbd7 10. Nd2 Bg6 11. e4 dxe4 12. Ndxe4 Qa5 13. a3 Rad8 14. b4 Qa6 15. Qb3 b5 16. cxb5 cxb5 17. Nc5 Qb6 18. a4 bxa4 19. N3xa4 Qb8 20. Nb7 Rc8 21. Nac5 Nxc5 22. dxc5 Ne4 23. Na5 Rfd8 24. Rfd1 Nd2 25. Qc3 Bf6 26. Qc1 Qxb4 27. Bxf6 gxf6 28. Nc6 Rxc6 29. Bxc6 Rd3 30. Ra4 Nf3+ 31. Kh1 Qb3 32. Rxd3 Qxd3 33. Ra3 Qd2 34. Qxd2 Nxd2 35. Bg2 Kf8 36. Rxa7 Ke8 37. Bc6+ Kf8 38. Ra8+ Kg7 39. Bg2 Ne4 40. c6 1-0

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.27"]
[Round "6"]
[White "Datu, Idelfonso"]
[Black "Torre, Eugenio"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2381"]
[BlackElo "2546"]
[PlyCount "18"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. g3 c6 4. Bg2 Bf5 5. 0-0 e6 6. b3 Nbd7 7. Bb2 Be7 8. Nbd2 Ne4 9. Nxe4 Bxe4 1/2-1/2

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.26"]
[Round "4"]
[White "Paragua, Mark"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2454"]
[BlackElo "2381"]
[PlyCount "89"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 Qe7+ 9. Qe2 Qxe2+ 10. Kxe2 Nxd5 11. Nxd5 cxd5 12. Bf4 c6 13. c3 Be7 14. Kd2 Be6 15. Ba6 Kd7 16. b4 d4 17. Be5 dxc3+ 18. Kxc3 Bd6 19. Rad1 Bd5 20. Bxd6 Kxd6 21. Bc4 a5 22. b5 Kc5 23. Bxd5 cxd5 24. a4 Rac8 25. Rc1 Rhe8 26. Kd2+ Kd6 27. Rxc8 Rxc8 28. Rc1 Rc4 29. Rxc4 dxc4 30. Kc3 Kc5 31. f4 f5 32. h3 h6 33. g4 g6 34. g5 hxg5 35. fxg5 f4 36. b6 Kxb6 37. Kxc4 f3 38. Kd3 Kc5 39. h4 Kd5 40. Ke3 Ke5 41. Kxf3 Kf5 42. Kg3 Ke6 43. Kf4 Kd6 44. Kg4 Ke6 45. h5 1-0

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.25"]
[Round "2"]
[White "Datu, Idelfonso"]
[Black "Nguyen, Anh Dung"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2381"]
[BlackElo "2557"]
[PlyCount "17"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. 0-0 Bg4 5. b3 Nbd7 6. Bb2 e6 7. d4 Bd6 8. Nbd2 0-0 9. Re1 1/2-1/2

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.25"]
[Round "3"]
[White "Villamayor, Buenaventura"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2560"]
[BlackElo "2381"]
[PlyCount "20"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 6. e3 c6 7. Nf3 Be7 8. Bd3 0-0 9. Qc2 Re8 10. 0-0 Nf8 1/2-1/2

[Event "Manila zt 3.2a"]
[Site "Manila"]
[Date "2001.04.24"]
[Round "1"]
[White "Datu, Idelfonso"]
[Black "Juswanto, Denny"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2381"]
[BlackElo "2487"]
[PlyCount "107"]
[EventDate "2001.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "CBM 083"]
[Source "ChessBase"]
[SourceDate "2001.07.05"]
[SourceVersion "1"]
[SourceVersionDate "2001.07.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 0-0 5. e4 Nc6 6. Nge2 d6 7. 0-0 Bc5 8. d3 Nd4 9. h3 c6 10. Na4 Nxe2+ 11. Qxe2 Bd4 12. Be3 a6 13. Bxd4 exd4 14. c5 dxc5 15. Nxc5 Re8 16. Qc2 b6 17. Na4 Bb7 18. b4 Rc8 19. Qb2 c5 20. bxc5 b5 21. Rac1 Nd7 22. Qb4 Ba8 23. Nb2 Ne5 24. Rc2 Nc6 25. Qd2 Re7 26. a4 h6 27. f4 Bb7 28. axb5 axb5 29. Ra1 Ra8 30. Rcc1 Re8 31. e5 Qd7 32. Nd1 f5 33. exf6 gxf6 34. Rxa8 Rxa8 35. Nf2 f5 36. g4 Ne7 37. Bxb7 Qxb7 38. Qe2 Kf7 39. Re1 Qd7 40. gxf5 Nxf5 41. Qh5+ Kg7 42. c6 Qf7 43. Qxf7+ Kxf7 44. Re5 Nd6 45. Ne4 Nxe4 46. dxe4 b4 47. Rb5 Ra1+ 48. Kf2 Ra2+ 49. Kf3 Ra3+ 50. Kg4 h5+ 51. Kf5 Rc3 52. Rb7+ Ke8 53. Rxb4 d3 54. Rd4 1-0

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.12"]
[Round "11"]
[White "Senador, Emmanuel"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2410"]
[BlackElo "2381"]
[PlyCount "175"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Bc5 7. c3 d6 8. d3 Be6 9. Nbd2 0-0 10. h3 b4 11. 0-0 bxc3 12. bxc3 Nh5 13. Qd1 Nf4 14. Ba4 Ne7 15. Nb3 Bb6 16. Bxf4 exf4 17. Nbd4 Ng6 18. Nc6 Qf6 19. d4 Nh4 20. Re1 Nxf3+ 21. Qxf3 Bd7 22. Rad1 Bxc6 23. Bxc6 Rad8 24. Kh2 Qe6 25. Bd5 Qh6 26. Bc6 Qe6 27. Bd5 Qh6 28. Bc6 Qe6 29. Qxf4 Qc4 30. Bd5 Qxc3 31. Re3 Qb2 32. Red3 Kh8 33. h4 f6 34. h5 Qb5 35. Rg3 Qd7 36. Rdd3 c6 37. Bb3 d5 38. Rgf3 Bc7 39. e5 c5 40. Rde3 cxd4 41. Re1 Rfe8 42. Kh1 fxe5 43. Qg5 Rf8 44. h6 Rxf3 45. gxf3 Qh3+ 46. Kg1 Qxh6 47. Rxe5 Qxg5+ 48. Rxg5 d3 49. Rxd5 Rxd5 50. Bxd5 Bf4 51. Kf1 g6 52. Bc4 d2 53. Ke2 a5 54. Kd1 Kg7 55. Kc2 Kf6 56. Bb5 h5 57. Be8 Kg5 58. Kd1 Kh6 59. Ke2 g5 60. Kd1 g4 61. fxg4 h4 62. g5+ Kxg5 63. Bd7 Kf6 64. Bh3 Ke5 65. Kc2 Kd4 66. Bd7 Kc4 67. a3 Bh6 68. Bc8 Kd5 69. Bh3 Ke5 70. Bd7 Bg5 71. Bh3 Kd4 72. Bg2 Kc4 73. Bf1+ Kc5 74. Bh3 Bf4 75. Bd7 Kc4 76. Be6+ Kd4 77. Bh3 Bh6 78. Bg2 Ke5 79. Bh3 Kd4 80. Bg2 Kc5 81. Bf1 Kd4 82. Bg2 Ke5 83. Bh3 Kd4 84. Bg2 Bf8 85. Kxd2 Bxa3 86. Ke2 Bd6 87. Bc6 h3 88. Kf1 1/2-1/2

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.11"]
[Round "10"]
[White "Datu, Idelfonso"]
[Black "Sayson, Alan"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2381"]
[BlackElo "2345"]
[PlyCount "65"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 c5 5. 0-0 Nc6 6. c4 dxc4 7. Ne5 Nxe5 8. dxe5 Qxd1 9. Rxd1 Nd7 10. f4 Be7 11. a4 Rb8 12. Na3 0-0 13. Nxc4 Rd8 14. Nd6 b6 15. Be3 f6 16. Bh3 Nf8 17. a5 Bxd6 18. exd6 Bb7 19. axb6 axb6 20. b4 Rbc8 21. bxc5 bxc5 22. Rac1 c4 23. Bb6 Rd7 24. Bc7 Ba6 25. Bg2 Rcxc7 26. dxc7 Rxc7 27. Rd6 Bb5 28. f5 Kf7 29. fxe6+ Ke7 30. Rb6 Rc5 31. Ra1 Nxe6 32. Ra7+ Nc7 33. Rxb5 1-0

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.10"]
[Round "9"]
[White "Datu, Idelfonso"]
[Black "Torre, Eugenio"]
[Result "1/2-1/2"]
[ECO "C69"]
[WhiteElo "2381"]
[BlackElo "2546"]
[PlyCount "82"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 f6 6. Qe2 c5 7. d3 Ne7 8. h3 Nc6 9. c3 Be6 10. Rd1 Qd7 11. Be3 0-0-0 12. Na3 Qf7 13. b3 g5 14. Nh2 h5 15. Nc2 Qg6 16. Nf1 f5 17. exf5 Bxf5 18. Ne1 g4 19. h4 Be7 20. Ng3 Bxh4 21. Nxf5 Qxf5 22. Bxc5 e4 23. Be3 Ne5 24. dxe4 Qxe4 25. Qc2 Qxc2 26. Nxc2 Rhf8 27. Rxd8+ Rxd8 28. Nd4 Bf6 29. Ne6 Rd6 30. Nc5 Nd7 31. Ne4 Rd3 32. Rc1 Be5 33. Kf1 Nf6 34. Ke2 Rd8 35. Nxf6 Bxf6 36. g3 Rd5 37. c4 Rf5 38. Rd1 b5 39. Kd3 bxc4+ 40. Kxc4 h4 41. gxh4 Bxh4 1/2-1/2

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.09"]
[Round "8"]
[White "Bitoon, Richard"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C22"]
[WhiteElo "2432"]
[BlackElo "2381"]
[PlyCount "73"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qd3 Nf6 5. Nc3 Bb4 6. Bd2 0-0 7. 0-0-0 Re8 8. Nge2 d6 9. Bg5 h6 10. Bh4 Ne5 11. Qb5 Bxc3 12. Nxc3 Bd7 13. Qxb7 Bc6 14. Qa6 g5 15. Bg3 Bxe4 16. f4 gxf4 17. Bxf4 Bg6 18. Bb5 Nfd7 19. Rhf1 Nc5 20. Qa5 Re6 21. Nd5 c6 22. Qxd8+ Rxd8 23. Bxe5 Rxe5 24. Nf6+ Kg7 25. Bxc6 Rc8 26. Rxd6 Re2 27. Kd1 Rxc2 28. Ne8+ Rxe8 29. Bxe8 Rxb2 30. Rd2 Rb1+ 31. Ke2 Bh5+ 32. Rf3 Ne4 33. Rc2 Ng5 34. Bc6 Nxf3 35. gxf3 Bg6 36. Rd2 Rb6 37. Be4 1/2-1/2

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.08"]
[Round "7"]
[White "Datu, Idelfonso"]
[Black "Garma, Chito"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2381"]
[BlackElo "2400"]
[PlyCount "54"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 d5 3. Bg2 c5 4. 0-0 Nf6 5. d4 Nc6 6. c4 dxc4 7. Ne5 Bd7 8. Bxc6 Bxc6 9. Nxc6 bxc6 10. Qa4 Qb6 11. dxc5 Bxc5 12. Qxc4 Rd8 13. Nc3 Rd4 14. Qb3 0-0 15. Qc2 Rc4 16. b3 Rxc3 17. Qxc3 Bxf2+ 18. Rxf2 Qxf2+ 19. Kxf2 Ne4+ 20. Kf3 Nxc3 21. Be3 Ra8 22. Rc1 Nxa2 23. Rxc6 Nb4 24. Rc4 a5 25. Bb6 f5 26. Bxa5 Rxa5 27. Rxb4 Kf7 1/2-1/2

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.07"]
[Round "6"]
[White "Sales, Jesse Noel"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2328"]
[BlackElo "2381"]
[PlyCount "157"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. b3 a5 5. Nf3 a4 6. Bb2 Be7 7. 0-0 0-0 8. d3 Nc6 9. e3 a3 10. Bc3 Nb4 11. Qd2 c5 12. Bxb4 cxb4 13. Qe2 b5 14. cxd5 Nxd5 15. Rc1 Ba6 16. d4 Rc8 17. Nbd2 Rxc1+ 18. Rxc1 Nc3 19. Qd3 Nxa2 20. Ra1 Nc3 21. Ne5 Qc7 22. Ne4 Rc8 23. h4 f6 24. Nc6 Bb7 25. Nxc3 Bxc6 26. d5 bxc3 27. dxc6 b4 28. Qc4 Qd6 29. Be4 Kf7 30. Bxh7 f5 31. Qe2 g6 32. h5 g5 33. g4 Kg7 34. Bg6 Qe5 35. gxf5 exf5 36. Qc4 Qf6 37. c7 Bd6 38. Rc1 Rxc7 39. Qd3 Qe5 40. Rc2 Kf6 41. Kf1 Rc5 42. e4 Ra5 43. Qc4 Qb5 44. Qxb5 Rxb5 45. Ke2 Ra5 46. Ra2 Rc5 47. Kd1 fxe4 48. Bxe4 Ke5 49. Re2 Kd4 50. Bb1 Re5 51. Ra2 g4 52. h6 Rh5 53. h7 Rh1+ 54. Ke2 Bf4 55. Bf5 Bd2 56. Ra1 Rh2 57. Rg1 Ke5 58. Bb1 Kf4 59. Bc2 Kg5 60. Rg2 Rh1 61. Rg1 Rh6 62. f3 Rh2+ 63. Kd3 Rxh7 64. Rxg4+ Kf6 65. Kc4 Rh1 66. Rg6+ Ke5 67. Ra6 Rc1 68. Kd3 Kf4 69. Rf6+ Kg3 70. Rg6+ Kxf3 71. Rf6+ Bf4 72. Ra6 Rf1 73. Ra8 Rf2 74. Bb1 Rd2+ 75. Kc4 c2 76. Bxc2 Rxc2+ 77. Kxb4 a2 78. Kb5 Be5 79. b4 0-1

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.06"]
[Round "5"]
[White "Datu, Idelfonso"]
[Black "Laylo, Darwin"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "2381"]
[BlackElo "2383"]
[PlyCount "114"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Bg2 Bg7 6. Nb3 Nf6 7. 0-0 0-0 8. c4 d6 9. Nc3 Be6 10. c5 d5 11. Bg5 d4 12. Nb5 h6 13. Bc1 Ne8 14. Bxc6 Bxb3 15. axb3 bxc6 16. Na3 Qd5 17. Qc2 Nf6 18. Bd2 Qe6 19. Nc4 Rfd8 20. f3 Nd5 21. Qd3 Rdb8 22. Ra5 Rb7 23. Rfa1 Rab8 24. R1a3 Rb5 25. Rxb5 Rxb5 26. Ra5 Rb7 27. Ra6 Qd7 28. Na5 Rc7 29. b4 Qc8 30. Qc4 Kh7 31. Nb3 h5 32. Ra1 Qh3 33. Rf1 h4 34. gxh4 e5 35. Rf2 Bh6 36. Bxh6 Kxh6 37. Qc1+ Ne3 38. Na5 Qxh4 39. Nc4 Qg5+ 40. Kh1 Rb7 41. Nd6 Rc7 42. b5 Nd5 43. Qxg5+ Kxg5 44. bxc6 Rxc6 45. Rf1 Kf4 46. Rc1 Ke3 47. Rc2 Nb4 48. Rc4 a5 49. Nb7 Kxe2 50. Nxa5 d3 51. Nb3 Nd5 52. Re4+ Kf2 53. Rxe5 Re6 54. Rxe6 fxe6 55. c6 Kxf3 56. Kg1 Ke3 57. Kg2 e5 0-1

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.05"]
[Round "4"]
[White "Gonzales, Jayson"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2396"]
[BlackElo "2381"]
[PlyCount "76"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Na3 Bxa3 6. bxa3 0-0 7. Qc2 Qd5 8. Bb2 Nbd7 9. Rc1 c6 10. 0-0 Qe4 11. Qd1 Qf5 12. Rxc4 e5 13. d3 Re8 14. Qc2 Qe6 15. e4 c5 16. Ng5 Qe7 17. f4 b6 18. Qd1 Ba6 19. Rc2 Qd6 20. Rd2 h6 21. Nf3 Ng4 22. Qe2 f5 23. Nh4 Ngf6 24. Nxf5 Qe6 25. Bh3 Qc6 26. Ne3 Rad8 27. Bg2 Qe6 28. Re1 Qf7 29. Rf1 exf4 30. Rxf4 Qg6 31. Qd1 Ne5 32. Qa4 Rxd3 33. Bxe5 Rxe5 34. Rxd3 Bxd3 35. Qb3+ c4 36. Nxc4 Bxc4 37. Qxc4+ Qf7 38. Qd4 Qe7 1/2-1/2

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.04"]
[Round "3"]
[White "Datu, Idelfonso"]
[Black "Olay, Edgar Reggie"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2381"]
[PlyCount "73"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. 0-0 c5 5. c4 g6 6. Nc3 Bg7 7. d4 cxd4 8. Qxd4 0-0 9. Qh4 h5 10. Rd1 d6 11. Bg5 Nbd7 12. e4 Qc8 13. Rac1 Qb8 14. Nd4 Re8 15. Nd5 Qd8 16. Nb5 Bxd5 17. cxd5 Rf8 18. Nd4 Kh7 19. Nc6 Qe8 20. f4 e5 21. fxe5 dxe5 22. Rf1 Ng4 23. Be7 f6 24. Bf3 Nh6 25. Bxf8 Bxf8 26. b4 Bd6 27. Be2 Kg7 28. Qh3 Nf8 29. Rf2 Qd7 30. Qxd7+ Nxd7 31. Ba6 f5 32. exf5 Nxf5 33. Bd3 Nd4 34. Nxd4 exd4 35. Rc6 Ne5 36. Rxd6 Nxd3 37. Rd2 1-0

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.03"]
[Round "2"]
[White "Antonio, Rogelio Jr"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2548"]
[BlackElo "2381"]
[PlyCount "99"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. a4 Rb8 8. axb5 axb5 9. d3 d6 10. h3 Be6 11. c3 Bxb3 12. Qxb3 0-0 13. Ra6 Bb6 14. Be3 Bxe3 15. fxe3 Ne7 16. Nbd2 Ng6 17. Rf2 d5 18. Ng5 h6 19. Ngf3 dxe4 20. Nxe4 Nxe4 21. dxe4 Kh7 22. Rd2 Qc8 23. Ra7 Ra8 24. Rxa8 Qxa8 25. Qd5 c6 26. Qd7 Qa6 27. h4 Qb6 28. Kf2 b4 29. h5 Nf4 30. Qf5+ Kg8 31. Nxe5 bxc3 32. bxc3 Ne6 33. Nd7 Qd8 34. Ke2 Re8 35. Ne5 Qa8 36. Qxf7+ Kh8 37. Ng6+ Kh7 38. Qf5 Qa6+ 39. Kf2 Ng5 40. Kg1 Qa1+ 41. Kh2 Qxc3 42. Rd7 Qxe3 43. Re7 Ra8 44. e5 Qe4 45. Qxe4 Nxe4 46. Rc7 c5 47. Kh3 Ng5+ 48. Kg4 Ne6 49. Rc6 Re8 50. Rxe6 1-0

[Event "PHI-ch"]
[Site "Quezon City"]
[Date "2001.04.02"]
[Round "1"]
[White "Datu, Idelfonso"]
[Black "Villamayor, Buenaventura"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2381"]
[BlackElo "2560"]
[PlyCount "33"]
[EventDate "2001.04.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "PHI"]
[EventCategory "7"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 c5 6. e4 d6 7. Nbd2 Nc6 8. a4 Rb8 9. Nc4 b6 10. Re1 Bb7 11. Bg5 h6 12. Bxf6 Bxf6 13. e5 dxe5 14. Nfxe5 Nxe5 15. Nxe5 Bxg2 16. Kxg2 Qc7 17. f4 1/2-1/2

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.16"]
[Round "11"]
[White "Mikhalevski, Victor"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2500"]
[BlackElo "2381"]
[PlyCount "91"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e3 e6 4. Bxc4 c5 5. Nf3 a6 6. a4 Nf6 7. 0-0 b6 8. Qe2 Bb7 9. Rd1 Nbd7 10. Nc3 Qc7 11. Bd2 Bd6 12. h3 0-0 13. b3 e5 14. dxc5 Nxc5 15. Be1 Qe7 16. Nh2 e4 17. Ng4 Nxg4 18. Qxg4 Qe5 19. g3 Rad8 20. Ne2 Bc8 21. Qh4 Nd3 22. Bc3 Qf5 23. g4 Qg6 24. Ng3 Bxg3 25. Qxg3 Qc6 26. Bd4 b5 27. Bxd3 exd3 28. Rxd3 Bb7 29. Kh2 Qe4 30. Rc3 b4 31. Rc4 Bd5 32. Rxb4 Qc2 33. Rf1 Bxb3 34. Qe5 f6 35. Qe7 Rfe8 36. Qa7 Bd5 37. Qxa6 Ra8 38. Qd6 Red8 39. Qf4 h6 40. Bb6 Re8 41. a5 Rac8 42. Kg3 Qe2 43. Ra1 Bc4 44. Bd4 Rc6 45. Qf3 Qxf3+ 46. Kxf3 1-0

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.15"]
[Round "10"]
[White "Datu, Idelfonso"]
[Black "Simutowe, Amon"]
[Result "1-0"]
[ECO "D78"]
[WhiteElo "2381"]
[BlackElo "2462"]
[PlyCount "75"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d5 6. c4 dxc4 7. Na3 c6 8. Nxc4 Nbd7 9. b3 Nb6 10. Bb2 Ne4 11. Nfe5 Nd6 12. Qc2 a5 13. a4 Nd5 14. Rfd1 Nb4 15. Qd2 Bf5 16. Ne3 Be6 17. N5c4 Nf5 18. Nxf5 gxf5 19. Bc3 Nd5 20. Bxa5 b6 21. Bc3 f4 22. Bb2 f6 23. e4 fxe3 24. Nxe3 Bh6 25. f4 Rf7 26. Rac1 Qd7 27. Nxd5 Bxd5 28. Re1 Rg7 29. Bxd5+ cxd5 30. Qe3 Kh8 31. Ba3 b5 32. a5 Qh3 33. Bxe7 Re8 34. Rc7 Qf5 35. Ra1 Qg6 36. Bxf6 Rf8 37. Bxg7+ Bxg7 38. Re7 1-0

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.14"]
[Round "9"]
[White "Khamatgaleev, Alexej"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "C49"]
[WhiteElo "2412"]
[BlackElo "2381"]
[PlyCount "107"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6 11. Bc1 Rd8 12. Bf1 b6 13. Nh4 c5 14. Nf5 Qc7 15. Qf3 Ne8 16. d5 Nf8 17. h4 f6 18. h5 g6 19. Nh6+ Kg7 20. Ng4 Qf7 21. hxg6 hxg6 22. a4 g5 23. a5 bxa5 24. Rxa5 Qh5 25. Be2 Bxg4 26. Qxg4 Qxg4 27. Bxg4 Nc7 28. Bd2 Rdb8 29. Rea1 Rb7 30. c4 Kf7 31. g3 Ke7 32. Kg2 a6 33. R5a2 Rab8 34. Ba5 Ne8 35. Bc3 Nc7 36. Rh1 Rb1 37. Rh2 Kf7 38. Ba5 Ne8 39. Bh5+ Ng6 40. Bc3 Nc7 41. Kf3 Kg7 42. Bg4 Nf8 43. Ke2 Kg8 44. Bf5 Kg7 45. Ra3 Kg8 46. f4 gxf4 47. gxf4 Rg1 48. fxe5 fxe5 49. Be1 Rg7 50. Rah3 Kf7 51. Rh8 Rg8 52. R8h6 Ke7 53. Rf2 Rg1 54. Bd2 0-1

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.13"]
[Round "8"]
[White "Datu, Idelfonso"]
[Black "Sengupta, Deep"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "2381"]
[BlackElo "2141"]
[PlyCount "109"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. c4 c5 7. Nc3 Nc6 8. dxc5 dxc5 9. Bf4 Be6 10. Ne5 Nh5 11. Nxc6 bxc6 12. Be3 Bd4 13. Bh6 Ng7 14. Qc2 Qb6 15. Rac1 Rfd8 16. Na4 Qb7 17. e3 Bf5 18. Be4 Bxe4 19. Qxe4 Bf6 20. Bxg7 Kxg7 21. Rc2 Qa6 22. b3 Qa5 23. Qxc6 Rac8 24. Qb7 Rb8 25. Qe4 Rd6 26. Kg2 Rbd8 27. Qf3 Qb4 28. Rcc1 Qa3 29. Rc2 Qb4 30. Rfc1 h5 31. Nc3 Bxc3 32. Rxc3 Rd2 33. R3c2 R8d6 34. Qe4 Re6 35. Qf4 Rf6 36. Qe5 Kh7 37. Rxd2 Qxd2 38. Rf1 Re6 39. Qxc5 h4 40. Qd4 h3+ 41. Kxh3 Qxa2 42. b4 Qe2 43. Kg2 g5 44. h3 Kg6 45. c5 a6 46. Qg4 Rxe3 47. Qxe2 Rxe2 48. Rc1 Rd2 49. Ra1 Rb2 50. Rxa6+ Kf5 51. Rb6 e5 52. c6 e4 53. c7 Rc2 54. Rb5+ Ke6 55. Rc5 1-0

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.12"]
[Round "7"]
[White "Ghaem Maghami, Ehsan"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "2504"]
[BlackElo "2381"]
[PlyCount "103"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 Bd6 6. Nc3 dxe4 7. Ng5 0-0 8. Ncxe4 Nxe4 9. Nxe4 Bf5 10. 0-0 Na6 11. Qf3 Bxe4 12. dxe4 Nc5 13. Bc4 b5 14. Be2 Ne6 15. c3 Bc5 16. g3 a5 17. Kg2 Be7 18. h4 Qc8 19. Qf5 g6 20. Qf3 Ng7 21. Bh6 Qe6 22. Qg4 Rfd8 23. Rfd1 a4 24. h5 Rxd1 25. Qxe6 Nxe6 26. Rxd1 Rd8 27. Rxd8+ Bxd8 28. f4 exf4 29. gxf4 g5 30. fxg5 Nf4+ 31. Kf3 Nxe2 32. Kxe2 Bc7 33. b3 axb3 34. axb3 Bf4 35. Kf3 Bd2 36. c4 bxc4 37. bxc4 Bc1 38. Kg4 Be3 39. Kf5 Bd2 40. e5 c5 41. Ke4 Bc1 42. Kd5 Be3 43. Kd6 Bf4 44. Kxc5 Bxe5 45. Kd5 Bf4 46. c5 f6 47. c6 fxg5 48. Ke6 Bc7 49. Bxg5 Kg7 50. Kd7 Bb8 51. c7 Bxc7 52. Kxc7 1-0

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.11"]
[Round "6"]
[White "Datu, Idelfonso"]
[Black "Dhar Barua, Saheli"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2381"]
[BlackElo "2224"]
[PlyCount "87"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Be7 5. c4 0-0 6. 0-0 dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bf4 Nd5 11. Bd2 Nd7 12. Ba5 Qc8 13. Nbd2 c5 14. e4 N5f6 15. Rfc1 Qb8 16. e5 Nd5 17. dxc5 Nxc5 18. b4 Nd7 19. Qb2 Qa7 20. a4 bxa4 21. Nc4 Rac8 22. Nd6 Rc6 23. Nxb7 Qxb7 24. Rxc6 Qxc6 25. Nd4 Qb7 26. Rxa4 Nxe5 27. Nxe6 Nf3+ 28. Bxf3 fxe6 29. Qe2 Qc6 30. Ra2 Rf6 31. Rc2 Qa4 32. Rc8+ Bf8 33. Bd8 Qd7 34. Ra8 Rg6 35. h4 Qc6 36. Rxa6 Qc1+ 37. Qf1 Qc8 38. h5 Ne3 39. Qe2 Qc1+ 40. Kh2 Nf1+ 41. Kg2 Rxg3+ 42. fxg3 Ne3+ 43. Kf2 Bxb4 44. Bb6 1-0

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.10"]
[Round "5"]
[White "Reinderman, Dimitri"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "2539"]
[BlackElo "2381"]
[PlyCount "105"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Qd6 6. Na3 Be6 7. Qe2 f6 8. Rd1 Bg4 9. c3 c5 10. h3 Bxf3 11. Qxf3 Ne7 12. d4 cxd4 13. cxd4 exd4 14. Bf4 Qd7 15. Rac1 Nc6 16. Nc2 Rd8 17. Qg3 Bd6 18. Bxd6 cxd6 19. Nxd4 Nxd4 20. Rxd4 0-0 21. Rcd1 Qb5 22. Rxd6 Rxd6 23. Rxd6 Qxb2 24. Rd7 Rf7 25. Qb8+ Rf8 26. Qc7 Qa1+ 27. Kh2 Qe5+ 28. Qxe5 fxe5 29. Kg3 Rf7 30. Rd8+ Rf8 31. Rd5 Re8 32. Rd7 b5 33. Rd6 Ra8 34. Kg4 Rf8 35. Kg3 Rf6 36. Rd7 Rc6 37. Rd2 Kf7 38. f3 Ke6 39. Kg4 a5 40. Rd5 Rb6 41. g3 a4 42. a3 Kf6 43. h4 g6 44. h5 gxh5+ 45. Kxh5 b4 46. axb4 Rxb4 47. Rd6+ Kf7 48. Rd7+ Kg8 49. Kg5 Rb3 50. Ra7 Rxf3 51. Rxa4 Rxg3+ 52. Kf6 Rg4 53. Kxe5 1/2-1/2

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.09"]
[Round "4"]
[White "Datu, Idelfonso"]
[Black "Markowski, Tomasz"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2381"]
[BlackElo "2595"]
[PlyCount "97"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. c4 Nc6 7. Nc3 Rb8 8. Nd5 Nd7 9. Be3 e6 10. Nc3 Ne7 11. Rc1 h6 12. d5 a6 13. dxe6 fxe6 14. Ba7 Ra8 15. Bd4 e5 16. Be3 Nf5 17. Bd2 Nf6 18. e4 Ne7 19. c5 Be6 20. cxd6 cxd6 21. Be3 Ng4 22. Qd2 Rc8 23. Rfd1 Rc6 24. h3 Nxe3 25. Qxe3 Qa5 26. Ne1 Rfc8 27. Rd2 b5 28. a3 b4 29. axb4 Qxb4 30. Rcd1 Bb3 31. Rb1 Kh7 32. Bf1 Qb7 33. Nb5 axb5 34. Qxb3 Rc1 35. Rxc1 Rxc1 36. Rd1 Rxd1 37. Qxd1 Qxe4 38. Qxd6 Nf5 39. Qd1 Qb4 40. Nd3 Qd4 41. Qg4 Qxg4 42. hxg4 Nd6 43. f4 exf4 44. gxf4 Bd4+ 45. Kg2 Kg7 46. Be2 Kf6 47. Bf3 Ke7 48. Bc6 Kd8 49. Kf3 1/2-1/2

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.08"]
[Round "3"]
[White "Kharlov, Andrei"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "2639"]
[BlackElo "2381"]
[PlyCount "91"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. Nf3 c5 8. d4 cxd4 9. Bd3 h6 10. cxd4 Bb4+ 11. Kf1 Nc6 12. Bb2 0-0 13. Qe2 Qe7 14. Rd1 Bd6 15. h4 Bd7 16. h5 f5 17. Nh4 Qf7 18. Ng6 Rfe8 19. f4 Rac8 20. Rh3 Ne7 21. Ne5 Bxe5 22. Qxe5 Kh8 23. d5 Ng8 24. d6 Nf6 25. Be2 Ne4 26. Qa5 Bc6 27. Bf3 b6 28. Qe5 Nf6 29. Be2 Ne4 30. Rd4 Bd7 31. Rxe4 Rc5 32. Ree3 Rxe5 33. Bxe5 Rg8 34. Rhg3 Kh7 35. Rg6 Be8 36. Reg3 Qd7 37. Rxg7+ Rxg7 38. Rxg7+ Qxg7 39. Bxg7 Kxg7 40. Kf2 Kf6 41. g4 e5 42. Kg3 Ke6 43. g5 hxg5 44. fxg5 f4+ 45. Kg4 Kxd6 46. g6 1-0

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.07"]
[Round "2"]
[White "Datu, Idelfonso"]
[Black "Joshi, Pankaj"]
[Result "1-0"]
[ECO "E68"]
[WhiteElo "2381"]
[BlackElo "2285"]
[PlyCount "95"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d6 6. c4 Nbd7 7. Nc3 e5 8. e4 exd4 9. Nxd4 Re8 10. Be3 a6 11. f3 Rb8 12. a4 Ne5 13. b3 Nfd7 14. Qc2 c6 15. h3 Nc5 16. Rad1 Qe7 17. f4 Ned7 18. Bf2 a5 19. Rd2 Qd8 20. Nde2 Qb6 21. Rb1 Qc7 22. Qd1 Bf8 23. g4 Nf6 24. Bxc5 dxc5 25. e5 Nd7 26. Ne4 Bg7 27. Nd6 Re7 28. g5 Nf8 29. Qf1 h6 30. h4 Bg4 31. Ng3 Ne6 32. Nge4 h5 33. Re1 Rd8 34. Re3 b6 35. Red3 Red7 36. Bh3 Bxh3 37. Rxh3 Nd4 38. Rhd3 Rxd6 39. Nxd6 Rxd6 40. exd6 Qxd6 41. f5 Qe5 42. f6 Bf8 43. Qf2 Qe4 44. Re3 Qg4+ 45. Qg3 Qxg3+ 46. Rxg3 Bd6 47. Re3 Kf8 48. Rd1 1-0

[Event "Goodricke op 12th"]
[Site "Kolkata"]
[Date "2001.02.06"]
[Round "1"]
[White "Deshmukh, Anup"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "D52"]
[WhiteElo "2313"]
[BlackElo "2381"]
[PlyCount "29"]
[EventDate "2001.02.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 082"]
[Source "ChessBase"]
[SourceDate "2001.05.17"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Qa5 7. Nd2 Bb4 8. Qc2 dxc4 9. Bxf6 Nxf6 10. Nxc4 Qc7 11. a3 Be7 12. Bd3 0-0 13. h3 c5 14. 0-0 cxd4 15. Nb5 1/2-1/2

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.11.12"]
[Round "14.4"]
[White "Meijers, Viesturs"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2478"]
[BlackElo "2345"]
[PlyCount "58"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Latvia"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "LAT"]
[BlackTeamCountry "PHI"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Qd6 6. d4 exd4 7. Nxd4 Bd7 8. Be3 0-0-0 9. Nd2 Qg6 10. Qe2 Nh6 11. f3 f5 12. c3 fxe4 13. Nxe4 Nf5 14. Bf2 Nxd4 15. Bxd4 h5 16. Qe3 Bf5 17. Rad1 h4 18. Bxg7 Qxg7 19. Qa7 Rd5 20. Qa8+ Kd7 21. Qxb7 Bxe4 22. fxe4 Bc5+ 23. Kh1 Rxd1 24. Rxd1+ Bd6 25. Qb3 Qe5 26. Qf7+ Kd8 27. Kg1 Qxh2+ 28. Kf2 Qg3+ 29. Kf1 Kc8 0-1

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.11.10"]
[Round "13.4"]
[White "Datu, Idelfonso"]
[Black "Soppe, Guillermo"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2345"]
[BlackElo "2471"]
[PlyCount "59"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Argentina"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "ARG"]

1. c4 e6 2. g3 d5 3. Bg2 c6 4. Qc2 dxc4 5. Qxc4 Nf6 6. Nf3 b5 7. Qc2 Bb7 8. 0-0 Nbd7 9. a4 a6 10. d4 c5 11. axb5 Be4 12. Qd1 axb5 13. Rxa8 Qxa8 14. Nc3 Bc6 15. dxc5 b4 16. Nb1 Bxc5 17. Nbd2 0-0 18. Ne1 Bxg2 19. Nxg2 Rc8 20. Nb3 Be7 21. Nf4 Ne5 22. Nd2 Qc6 23. Nf3 Nxf3+ 24. exf3 Qc2 25. Qxc2 Rxc2 26. Rd1 Kf8 27. Nd3 Ke8 28. Kf1 Nd5 29. Bd2 Bf6 30. Bxb4 1/2-1/2

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.11.08"]
[Round "11.4"]
[White "De Firmian, Nick E"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2567"]
[BlackElo "2345"]
[PlyCount "75"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "United States"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "PHI"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. a4 Bb7 8. d3 0-0 9. Nc3 b4 10. Nd5 Na5 11. Bg5 Bxd5 12. Bxd5 c6 13. Ba2 d6 14. c3 h6 15. Bh4 bxc3 16. bxc3 Qe7 17. Rb1 Ba7 18. d4 Bb8 19. Re1 Bc7 20. Qd3 Rfc8 21. Nd2 Bd8 22. f4 Qa7 23. fxe5 dxe5 24. Nf3 exd4 25. cxd4 c5 26. e5 Nh7 27. e6 c4 28. Bxd8 Rxd8 29. Bxc4 Nxc4 30. Qxc4 fxe6 31. Rxe6 Kh8 32. Rc6 Ng5 33. Nxg5 hxg5 34. Rd1 a5 35. Rd3 g4 36. Rc5 g6 37. Rc7 Qb6 38. Qc1 1-0

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.11.07"]
[Round "10.4"]
[White "Datu, Idelfonso"]
[Black "Zjukin, Sergei"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2345"]
[BlackElo "2402"]
[PlyCount "66"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Estonia"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "EST"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3 6. dxc3 Qxd1+ 7. Kxd1 Nd7 8. Kc2 e5 9. e4 b6 10. Be3 Bb7 11. Rd1 Bc5 12. Bxc5 Nxc5 13. f3 a5 14. Nh3 Ke7 15. Nf2 Rhd8 16. Ng4 f6 17. Ne3 c6 18. Rhe1 Ba6 19. Bf1 Rxd1 20. Rxd1 Bxf1 21. Rxf1 b5 22. Rd1 Ne6 23. Kd2 h5 24. Ke2 Nc5 25. Rd2 Rh8 26. Nd1 h4 27. g4 Rd8 28. Rxd8 Kxd8 29. Kd2 Ke7 30. Ne3 Ne6 31. Ng2 h3 32. Ne1 Kd6 33. Nd3 g5 1/2-1/2

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.11.06"]
[Round "9.4"]
[White "Datu, Idelfonso"]
[Black "Erkhembayar, Duurenbayar"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2345"]
[BlackElo "2301"]
[PlyCount "79"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Mongolia"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "MGL"]

1. c4 Nf6 2. Nc3 c5 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nc6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Nxd4 9. Qxd4 d6 10. Qd2 Rb8 11. b3 Bd7 12. Bb2 Qa5 13. Rfd1 Rfe8 14. Rac1 Bc6 15. e4 a6 16. a3 Qh5 17. Nd5 Ng4 18. h3 Ne5 19. g4 Qh6 20. f4 Nd7 21. Bxg7 Qxg7 22. b4 Nf6 23. Nc3 Rec8 24. Qe3 Be8 25. e5 dxe5 26. fxe5 Nd7 27. Nd5 Kf8 28. e6 Ne5 29. exf7 Bxf7 30. Rf1 Nxc4 31. Qxe7+ Kg8 32. Nf6+ Kh8 33. Nd7 Qd4+ 34. Kh2 Bg8 35. Nxb8 Rxb8 36. Rcd1 Qb2 37. Rd8 Rxd8 38. Qxd8 Qe5+ 39. Kh1 b5 40. g5 1-0

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.11.04"]
[Round "7.4"]
[White "Wu, Wenjin"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "D36"]
[WhiteElo "2601"]
[BlackElo "2345"]
[PlyCount "88"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "China"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "CHN"]
[BlackTeamCountry "PHI"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. cxd5 exd5 6. Bg5 Be7 7. Qc2 0-0 8. e3 Nbd7 9. Bd3 Re8 10. 0-0 Nf8 11. a3 a5 12. Ne5 Ng4 13. Bxe7 Rxe7 14. Nxg4 Bxg4 15. Na4 Bh5 16. Qb3 Bg6 17. Be2 b5 18. Nc5 Ne6 19. Qc3 Nxc5 20. Qxc5 Re6 21. Bg4 Rd6 22. Rad1 a4 23. Bh3 f5 24. Rd2 Qf6 25. g3 Rf8 26. Rc1 Re6 27. Qb6 Be8 28. Rdc2 g5 29. Rc3 Kh8 30. Qc5 Kg7 31. b3 axb3 32. Rxb3 Qh6 33. Bg2 f4 34. exf4 gxf4 35. a4 bxa4 36. Ra3 fxg3 37. hxg3 Qd2 38. Rf1 Re1 39. f4 Bg6 40. Qa7+ Rf7 41. Qxa4 Bc2 42. Qxc6 Qxd4+ 43. Kh1 Rxf1+ 44. Bxf1 Be4+ 0-1

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.11.01"]
[Round "5.3"]
[White "Datu, Idelfonso"]
[Black "Frois, Antonio"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2345"]
[BlackElo "2346"]
[PlyCount "52"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Portugal"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "POR"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. 0-0 Nc6 5. c4 d6 6. Nc3 Nf6 7. d4 cxd4 8. Nxd4 Bd7 9. b3 0-0 10. Bb2 Qa5 11. e3 Rfc8 12. Qe2 Rab8 13. Rfd1 a6 14. Nxc6 bxc6 15. Rac1 Bg4 16. f3 Be6 17. e4 Nd7 18. Ba1 Qh5 19. Qf2 Nc5 20. f4 Bh3 21. Bxh3 Qxh3 22. e5 Qf5 23. Qe3 Rd8 24. Ne2 Rbc8 25. Bd4 Ne6 26. exd6 Nxd4 1/2-1/2

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.10.31"]
[Round "4.4"]
[White "Datu, Idelfonso"]
[Black "Magem Badals, Jordi"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2345"]
[BlackElo "2482"]
[PlyCount "62"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Spain"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "ESP"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. c4 e6 5. d4 c6 6. Nbd2 Ngf6 7. 0-0 Bd6 8. b3 0-0 9. Bb2 Qb8 10. Re1 Rd8 11. a3 h6 12. Qc1 Bf5 13. Bc3 Ne4 14. Nxe4 Bxe4 15. Nd2 Bxg2 16. Kxg2 b5 17. e4 bxc4 18. bxc4 Qb7 19. c5 Bc7 20. e5 Qa6 21. Qc2 Rab8 22. Rab1 Rxb1 23. Rxb1 Rb8 24. Rxb8+ Nxb8 25. Qb2 Nd7 26. Nf1 f6 27. f4 fxe5 28. fxe5 Nf8 29. Kf2 Ng6 30. Ne3 Ne7 31. Qb3 Kf7 1/2-1/2

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.10.30"]
[Round "3.3"]
[White "Datu, Idelfonso"]
[Black "Pelletier, Yannick"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "2345"]
[BlackElo "2474"]
[PlyCount "46"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "SUI"]

1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 b6 5. Bg2 Bb7 6. 0-0 Be7 7. Re1 d5 8. cxd5 exd5 9. d4 0-0 10. Bf4 Na6 11. Rc1 Ne4 12. dxc5 Bxc5 13. Rf1 Qe8 14. a3 Rc8 15. Be5 f6 16. Bd4 Bxd4 17. Nxd4 Nxc3 18. bxc3 Nc5 19. c4 dxc4 20. Rxc4 Bxg2 21. Kxg2 Qe4+ 22. Kg1 Rcd8 23. e3 Qd5 1/2-1/2

[Event "Olympiad-34"]
[Site "Istanbul"]
[Date "2000.10.29"]
[Round "2.4"]
[White "Hossain, Enamul"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2314"]
[BlackElo "2345"]
[PlyCount "95"]
[EventDate "2000.10.28"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "TUR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Bangladesh"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "BAN"]
[BlackTeamCountry "PHI"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 0-0 6. Re1 d6 7. a4 h6 8. Nbd2 Nh7 9. a5 a6 10. Nf1 Ng5 11. Ne3 Be6 12. Nd2 Qd7 13. c3 g6 14. h4 Nh7 15. Bxe6 Qxe6 16. Nd5 Rac8 17. Nf3 h5 18. Qb3 Nd8 19. Nxe7+ Qxe7 20. d4 Kg7 21. Be3 f6 22. c4 c5 23. dxc5 dxc5 24. Red1 Ne6 25. Rd5 Rf7 26. Qd3 Nd4 27. Nxd4 cxd4 28. Bd2 Nf8 29. f4 Qc7 30. b3 exf4 31. Qxd4 f3 32. Rd6 fxg2 33. Kxg2 Re8 34. Bf4 Qc8 35. Bg3 Qg4 36. Re1 Ne6 37. Qf2 g5 38. Kh2 Kg6 39. Qf5+ Qxf5 40. exf5+ Kxf5 41. c5 Rfe7 42. c6 bxc6 43. Rxc6 Nd4 44. Rf1+ Kg4 45. Rcxf6 Re1 46. R1f2 Nxb3 47. hxg5 Kxg5 48. R6f5+ 1/2-1/2

[Event "Olympiad-33"]
[Site "Elista"]
[Date "1998.10.03"]
[Round "5.3"]
[White "Gallagher, Joseph G"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2525"]
[BlackElo "2335"]
[PlyCount "95"]
[EventDate "1998.09.29"]
[EventType "team-swiss"]
[EventRounds "13"]
[EventCountry "RUS"]
[SourceTitle "CBM 068"]
[Source "ChessBase"]
[SourceDate "1999.02.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.02.01"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "PHI"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Nge2 Nc6 7. Bg5 a6 8. Qd2 Rb8 9. d5 Ne5 10. Nd4 c5 11. Nc2 b5 12. cxb5 axb5 13. Bxb5 Bd7 14. a4 Bxb5 15. axb5 Nfd7 16. Qe2 c4 17. 0-0 Nd3 18. Na3 Nb6 19. Rad1 Nxb2 20. Qxb2 Na4 21. Nxa4 Bxb2 22. Nxb2 c3 23. Nbc4 Qc7 24. Rc1 f6 25. Be3 Rxb5 26. Nxb5 Qxc4 27. Nxc3 Ra8 28. Rf2 Qd3 29. Nd1 Kf7 30. Rd2 Qb3 31. Rb2 Qd3 32. Rbc2 g5 33. Rd2 Qb3 34. Rb2 Qd3 35. Rd2 Qb3 36. Bf2 Qb4 37. Rb2 Qa3 38. h3 h5 39. Rbc2 g4 40. hxg4 hxg4 41. fxg4 Qd3 42. Ne3 Ra4 43. Rc4 Ra2 44. Rc7 Kf8 45. Nf5 Qe2 46. Rf1 Qxe4 47. Rxe7 Qd3 48. Rfe1 1-0

[Event "Olympiad-33"]
[Site "Elista"]
[Date "1998.09.30"]
[Round "2.3"]
[White "Kostenko, Petr"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2470"]
[BlackElo "2335"]
[PlyCount "79"]
[EventDate "1998.09.29"]
[EventType "team-swiss"]
[EventRounds "13"]
[EventCountry "RUS"]
[SourceTitle "CBM 068"]
[Source "ChessBase"]
[SourceDate "1999.02.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.02.01"]
[SourceQuality "1"]
[WhiteTeam "Kazakhstan"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "KAZ"]
[BlackTeamCountry "PHI"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. 0-0 Nc6 8. Re1 Bg4 9. c3 f5 10. Qb3 0-0 11. Nbd2 Nxd2 12. Nxd2 Qd6 13. Nf1 f4 14. Qxb7 Rab8 15. Qa6 Bd7 16. b4 Rb6 17. Qa3 Qf6 18. Qb3 Be6 19. Qc2 g6 20. Qe2 Nd8 21. a4 Bd6 22. Ra2 Qg5 23. Nd2 Bg4 24. f3 Bc8 25. Nb3 Qh5 26. b5 g5 27. a5 Rb8 28. c4 dxc4 29. Bxc4+ Nf7 30. Nc5 Bf5 31. Ne4 Qg6 32. Bd5 Kg7 33. Qc4 Bd7 34. Rb2 h6 35. Bd2 Qf5 36. Bc3 Rfe8 37. Reb1 Rec8 38. Nc5 Bxc5 39. dxc5+ Kf8 40. Qd4 1-0

[Event "Olympiad-33"]
[Site "Elista"]
[Date "1998.09.29"]
[Round "1.1"]
[White "Asefi, Zaheeruddeen"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "E61"]
[BlackElo "2335"]
[PlyCount "58"]
[EventDate "1998.09.29"]
[EventType "team-swiss"]
[EventRounds "13"]
[EventCountry "RUS"]
[SourceTitle "CBM 068"]
[Source "ChessBase"]
[SourceDate "1999.02.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.02.01"]
[SourceQuality "1"]
[WhiteTeam "Afghanistan"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "AFG"]
[BlackTeamCountry "PHI"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 0-0 5. Bg5 d6 6. e3 c6 7. Bd3 a6 8. 0-0 b5 9. Rc1 Nbd7 10. a3 Bb7 11. Re1 Re8 12. b4 bxc4 13. Bxc4 Nb6 14. Ba2 a5 15. Qb3 d5 16. bxa5 Rxa5 17. Rb1 Nfd7 18. Qb4 Ra7 19. e4 f6 20. Bf4 e6 21. exd5 cxd5 22. Nb5 Ra4 23. Qb2 Bf8 24. Bd6 Bc6 25. Bxf8 Nxf8 26. Qc1 Nc4 27. Bxc4 Rxc4 28. Qd1 Qd7 29. Qb3 Ra8 0-1

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.07.29"]
[Round "9"]
[White "Datu, Idelfonso"]
[Black "Levin, Eugene"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2335"]
[BlackElo "2190"]
[PlyCount "95"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. 0-0 Bg7 5. d4 d6 6. c4 0-0 7. Nc3 c6 8. d5 e5 9. dxc6 bxc6 10. b3 Qa5 11. Bb2 Rd8 12. Qd2 Na6 13. Rfd1 Bb7 14. e4 fxe4 15. Nxe4 Qxd2 16. Nfxd2 Nxe4 17. Nxe4 d5 18. cxd5 cxd5 19. Ng5 Nc7 20. Rac1 Rd7 21. Bh3 Rad8 22. Ne6 Nxe6 23. Bxe6+ Kf8 24. Ba3+ Ke8 25. Bxd7+ Rxd7 26. Bc5 Ba6 27. f4 exf4 28. Bd4 fxg3 29. hxg3 Bxd4+ 30. Rxd4 Ke7 31. Rc5 Bb7 32. Kf2 Kd6 33. Ra5 a6 34. Ke3 g5 35. Rb4 Re7+ 36. Kd3 Rf7 37. Kd4 h5 38. Rb6+ Kc7 39. Rh6 h4 40. gxh4 Rf4+ 41. Kc5 gxh4 42. Rh7+ Kb8 43. Ra4 Rf1 44. Rg4 Rc1+ 45. Kd6 Rc6+ 46. Ke5 Rc2 47. Rgxh4 Rxa2 48. Rb4 1-0

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.07.28"]
[Round "8"]
[White "Hummel, Patrick"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "E99"]
[WhiteElo "2240"]
[BlackElo "2335"]
[PlyCount "89"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Ne8 10. Be3 f5 11. f3 f4 12. Bf2 h5 13. c5 g5 14. cxd6 cxd6 15. a4 Nf6 16. a5 g4 17. Nb5 Ng6 18. Bxa7 g3 19. Bb6 Qe7 20. Kh1 Ne8 21. b4 gxh2 22. Rc1 h4 23. Rf2 Qg5 24. Bf1 h3 25. Rfc2 Nf6 26. Nxd6 Nh5 27. Bf2 Ng3+ 28. Bxg3 fxg3 29. Qe2 Nf4 30. Qe3 Bg4 31. Nd3 Bh5 32. Nf5 Bf6 33. Nxf4 exf4 34. Qd3 Be5 35. d6 Bf7 36. d7 Rad8 37. Qb5 Qf6 38. Qxb7 Be6 39. Bc4 hxg2+ 40. Kxg2 Rf7 41. Bxe6 Qxe6 42. Rc8 Rfxd7 43. Qxd7 Qxd7 44. Rxd8+ Qxd8 45. Rc8 1-0

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.07.27"]
[Round "7"]
[White "Datu, Idelfonso"]
[Black "Wolff, Patrick G"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2335"]
[BlackElo "2575"]
[PlyCount "100"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. g3 Nc6 4. Bg2 g6 5. 0-0 Bg7 6. d3 Nf6 7. Nbd2 0-0 8. a4 Rb8 9. Nc4 b6 10. Ne3 Ng4 11. c3 Nxe3 12. Bxe3 Bb7 13. Rc1 Qd7 14. h3 Rbd8 15. d4 Na5 16. Nd2 cxd4 17. cxd4 Rc8 18. b3 e6 19. Qe2 Rxc1 20. Rxc1 Rc8 21. Rxc8+ Qxc8 22. Bf1 Qc3 23. Qd3 Qxd3 24. Bxd3 d5 25. e5 Bf8 26. Kf1 Bb4 27. Bc2 Ba6+ 28. Kg2 Nc6 29. Nb1 Be1 30. Kf3 Nb4 31. Bd1 Bd3 32. Bd2 Bxd2 33. Nxd2 Nc2 34. Kf4 a5 35. Nf3 h6 36. h4 Kf8 37. g4 Ke7 38. g5 h5 39. Ng1 Nxd4 40. Ke3 Bc2 41. Bxc2 Nxc2+ 42. Kd3 Nb4+ 43. Kc3 Kd7 44. f4 Kc6 45. Ne2 Kc5 46. Nd4 Nc6 47. Nb5 Ne7 48. Nd6 Nf5 49. Nxf7 Nxh4 50. Nh8 Nf5 0-1

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.07.26"]
[Round "6"]
[White "Benjamin, Joel"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C80"]
[WhiteElo "2595"]
[BlackElo "2335"]
[PlyCount "131"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Be3 Bc5 10. Bxc5 Nxc5 11. Nd4 Qd7 12. Nc3 Rd8 13. Nce2 0-0 14. c3 Ne7 15. Bc2 f6 16. exf6 Rxf6 17. Ng3 Bf7 18. f4 Nc6 19. b4 Nxd4 20. Qxd4 Nb7 21. Rae1 c5 22. bxc5 Qc7 23. Kh1 Qxc5 24. Qd3 Bg6 25. f5 Bf7 26. Bb3 Qd6 27. Qd4 Nc5 28. Re3 Nxb3 29. axb3 Qb6 30. Qd2 d4 31. Rd3 Bxb3 32. Rxd4 Rxd4 33. cxd4 Bd5 34. Re1 Rf8 35. Re5 Bf7 36. Ne4 b4 37. Nc5 b3 38. Qb2 Qb4 39. h3 a5 40. Nd3 Qc4 41. Nc5 a4 42. Re1 Qb4 43. Nd3 Qa5 44. Re5 Qa6 45. Qc3 Ra8 46. Re7 Qc4 47. Qe1 a3 48. Ne5 a2 49. Nxc4 a1Q 50. Nd2 Qxe1+ 51. Rxe1 b2 52. Kh2 Ra1 53. Rb1 Rxb1 54. Nxb1 Bd5 55. g4 Kf7 56. Kg3 Be4 57. Nc3 b1Q 58. Nxb1 Bxb1 59. Kf4 Bd3 60. h4 Be2 61. g5 Ba6 62. Ke5 Bc8 63. d5 Ba6 64. h5 Bc8 65. g6+ hxg6 66. hxg6+ 1/2-1/2

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.07.25"]
[Round "5"]
[White "Datu, Idelfonso"]
[Black "Watson, John L"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2335"]
[BlackElo "2365"]
[PlyCount "59"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d3 c5 3. Nf3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nge7 7. c3 0-0 8. d4 cxd4 9. cxd4 d5 10. e5 Nf5 11. Nc3 Qb6 12. Na4 Qc7 13. Bf4 b5 14. Nc3 Qb6 15. Ne2 f6 16. Rc1 Ncxd4 17. Nfxd4 Nxd4 18. Nxd4 fxe5 19. Rxc8 Raxc8 20. Nxe6 exf4 21. Nxf8 Rxf8 22. Qxd5+ Kh8 23. b4 fxg3 24. hxg3 Bd4 25. Bf3 a6 26. Kg2 Kg7 27. Re1 Rf5 28. Re7+ Kf8 29. Qd7 Qb8 30. Bc6 1-0

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.07.24"]
[Round "4"]
[White "Schiller, Eric Andrew"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2190"]
[BlackElo "2335"]
[PlyCount "68"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. d3 d6 8. h3 0-0 9. a4 Bb7 10. axb5 axb5 11. Rxa8 Bxa8 12. Nc3 b4 13. Nd5 h6 14. c3 bxc3 15. bxc3 Na5 16. Ba2 Nxd5 17. exd5 Bb6 18. d4 e4 19. Nh2 c6 20. Qg4 f5 21. dxc6+ d5 22. Qh5 Qd6 23. g3 Qxc6 24. Ba3 Rf6 25. Rb1 Bc7 26. Bc5 Nc4 27. Rb4 Qe6 28. Nf1 f4 29. gxf4 e3 30. fxe3 Nxe3 31. Bb1 Nxf1 32. f5 Qe1 33. Kg2 Ne3+ 34. Kf3 Qd1+ 0-1

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.07.21"]
[Round "1"]
[White "Datu, Idelfonso"]
[Black "Blatny, Pavel"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "2335"]
[BlackElo "2520"]
[PlyCount "162"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. 0-0 c6 5. d3 g6 6. Nbd2 Bg7 7. h3 Bxf3 8. Bxf3 e6 9. e4 Ne7 10. Bg2 0-0 11. Qe2 Qc7 12. c3 Rad8 13. Nb3 Rfe8 14. Bf4 Qb6 15. Be3 c5 16. exd5 exd5 17. Qc2 h6 18. c4 dxc4 19. dxc4 Nf5 20. Bd2 Nd4 21. Nxd4 cxd4 22. Rae1 Ne5 23. b4 d3 24. Qa4 Qd4 25. c5 a5 26. Bxb7 Qb2 27. Bf4 axb4 28. Rb1 Qa3 29. Qxb4 Qxb4 30. Rxb4 d2 31. Rbb1 g5 32. c6 gxf4 33. c7 fxg3 34. cxd8Q Rxd8 35. fxg3 Nc4 36. Bf3 Ne3 37. Kf2 Nxf1 38. Rxf1 Re8 39. Rd1 Bd4+ 40. Kg2 Bc3 41. Kf2 Kg7 42. Bd5 Kf6 43. Kf3 Ke5 44. Bb3 Kd4 45. Bc2 Ba5 46. h4 Re3+ 47. Kf2 h5 48. Bb3 Re5 49. Kg2 Re1 50. Kf3 Kd3 51. Ba4 Re5 52. Rb1 Re3+ 53. Kf2 Re1 54. Bd1 Bc3 55. a4 Bd4+ 56. Kg2 Rg1+ 57. Kf3 Rf1+ 58. Kg2 Rf2+ 59. Kh3 Rf5 60. Rb3+ Bc3 61. Rb5 Rf1 62. Bxh5 d1Q 63. Bxd1 Rxd1 64. Rf5 f6 65. Rf3+ Kc4 66. Kg4 Rd5 67. h5 Rg5+ 68. Kh4 Rg8 69. Rf4+ Kd5 70. Rg4 Rh8 71. Rg6 Ke6 72. h6 Bd2 73. Kh5 Rh7 74. g4 Bf4 75. a5 Bd2 76. a6 Bf4 77. g5 Bxg5 78. Rxg5 fxg5 79. Kg6 Ra7 80. h7 Ra8 81. Kg7 Kd6 0-1

[Event "US Masters op"]
[Site "Hawaii"]
[Date "1998.??.??"]
[Round "2"]
[White "Crispin, Thomas A"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "C22"]
[WhiteElo "2190"]
[BlackElo "2335"]
[PlyCount "55"]
[EventDate "1998.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nf6 5. Nc3 Bb4 6. Bd2 0-0 7. 0-0-0 Re8 8. Qg3 Nxe4 9. Nxe4 Rxe4 10. c3 Bd6 11. f4 Qf6 12. Nh3 Ra4 13. Bd3 Be7 14. Ng5 g6 15. f5 Ne5 16. Rhf1 Nxd3+ 17. Qxd3 d5 18. Nxh7 Qa6 19. Qe3 Re4 20. Qg3 Kxh7 21. fxg6+ Qxg6 22. Qxc7 Bf5 23. Qxb7 Rd8 24. h4 Rd7 25. Qc8 d4 26. h5 Qe6 27. g4 Qxa2 28. g5 0-1

[Event "WchT U26 11th"]
[Site "Roque Saenz Pena"]
[Date "1997.08.14"]
[Round "9"]
[White "Datu, Idelfonso"]
[Black "Egorov, Evgeni"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "2440"]
[PlyCount "86"]
[EventDate "1997.08.06"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Kazakhstan"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "KAZ"]

1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Bg2 Nb4 5. Na3 e6 6. 0-0 Be7 7. c3 Na6 8. Ne5 Nf6 9. Nc2 h6 10. b4 c6 11. Ne3 Bh7 12. a4 Nc7 13. Qb3 Ne4 14. f3 Nd6 15. a5 0-0 16. Bd2 Qe8 17. Nd3 Rd8 18. Rfe1 h5 19. Nf1 Nc4 20. Bf4 Nb5 21. e4 h4 22. Rad1 b6 23. axb6 axb6 24. gxh4 Ra8 25. Ra1 Bxh4 26. Bg3 Bxg3 27. hxg3 Qd7 28. Nb2 Nxb2 29. Qxb2 dxe4 30. fxe4 e5 31. Rxa8 Rxa8 32. d5 cxd5 33. exd5 Rc8 34. c4 Rxc4 35. Qxe5 Rc8 36. Bh3 f5 37. Qe6+ Qxe6 38. Rxe6 Rd8 39. Rxb6 Rxd5 40. Ne3 Rd3 41. Bxf5 Rxe3 42. Bxh7+ Kxh7 43. Rxb5 Rxg3+ 1/2-1/2

[Event "WchT U26 11th"]
[Site "Roque Saenz Pena"]
[Date "1997.08.13"]
[Round "8"]
[White "Datu, Idelfonso"]
[Black "Valerga, Diego"]
[Result "1/2-1/2"]
[ECO "E62"]
[BlackElo "2480"]
[PlyCount "70"]
[EventDate "1997.08.06"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Argentina"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "ARG"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d6 6. c4 Nc6 7. Nc3 Bf5 8. Ne1 Na5 9. e4 Bg4 10. f3 Bd7 11. Qe2 Nc6 12. Nc2 e5 13. d5 Nd4 14. Qd3 Nxc2 15. Qxc2 Nh5 16. Qe2 Qe7 17. Bd2 Kh8 18. Kh1 Rae8 19. b4 f5 20. Be1 Nf6 21. Rd1 h5 22. exf5 Bxf5 23. Ne4 Nxe4 24. fxe4 Bg4 25. Bf3 Rxf3 26. Rxf3 Rf8 27. Rdd3 Rxf3 28. Rxf3 Qg5 29. Kg2 Qc1 30. h3 Bxf3+ 31. Kxf3 Bh6 32. b5 Kg7 33. Kf2 Bg5 34. h4 Bh6 35. Kf3 Kg8 1/2-1/2

[Event "WchT U26 11th"]
[Site "Roque Saenz Pena"]
[Date "1997.08.12"]
[Round "7"]
[White "Guid, Matej"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "E01"]
[WhiteElo "2150"]
[PlyCount "66"]
[EventDate "1997.08.06"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Slovenia"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "SLO"]
[BlackTeamCountry "PHI"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 c6 5. Bg2 Bb4+ 6. Nbd2 0-0 7. 0-0 Nbd7 8. Qc2 Be7 9. e4 dxe4 10. Nxe4 c5 11. Nxc5 Nxc5 12. dxc5 Bxc5 13. Rd1 Qb6 14. Ne5 Bd4 15. Nd3 e5 16. c5 Qc7 17. Bg5 Bf5 18. Bxf6 gxf6 19. Rac1 Rfd8 20. b4 e4 21. Nf4 Qe5 22. Qe2 a5 23. g4 Qxf4 24. gxf5 e3 25. Bxb7 exf2+ 26. Kf1 Qxh2 27. Qg4+ Kh8 28. Rxd4 Rg8 29. Bxa8 Qg1+ 30. Ke2 Rxg4 31. Rxg4 Qxg4+ 32. Bf3 Qxb4 33. Kf1 Qf4 0-1

[Event "WchT U26 11th"]
[Site "Roque Saenz Pena"]
[Date "1997.08.11"]
[Round "6"]
[White "Motylev, Alexander"]
[Black "Datu, Idelfonso"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2450"]
[PlyCount "57"]
[EventDate "1997.08.06"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Russia"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "RUS"]
[BlackTeamCountry "PHI"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Qg6 7. Qe2 Bxd4 8. cxd4 Nce7 9. Nc3 c6 10. d5 d6 11. dxc6 bxc6 12. Qd2 Bb7 13. 0-0-0 d5 14. exd5 cxd5 15. Bd3 f5 16. Rhe1 Kf7 17. Bc5 Re8 18. Qe3 Qf6 19. Bd4 Qd6 20. Kb1 a6 21. Be5 Qc6 22. Ne2 Nf6 23. Nd4 Qb6 24. Nxf5 Qxe3 25. Nd6+ Ke6 26. Rxe3 Rb8 27. Bg3+ Kd7 28. Rde1 Ne4 29. Nxe4 1-0

[Event "WchT U26 11th"]
[Site "Roque Saenz Pena"]
[Date "1997.08.10"]
[Round "5"]
[White "Datu, Idelfonso"]
[Black "Rios Parra, Mauricio Flores"]
[Result "1-0"]
[ECO "E69"]
[PlyCount "79"]
[EventDate "1997.08.06"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Colombia"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "COL"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d6 6. c4 Nbd7 7. Nc3 e5 8. e4 Re8 9. h3 exd4 10. Nxd4 Nc5 11. Re1 a5 12. Rb1 c6 13. Bf4 Nh5 14. Be3 Nf6 15. Qc2 Nfd7 16. Rbd1 a4 17. Nde2 Qc7 18. f4 Bf8 19. Nd4 Qa5 20. Bf1 Qb4 21. Kh2 Nb6 22. Ncb5 Nxc4 23. Nc7 Rxe4 24. Bxc4 Rxe3 25. Rxe3 Rb8 26. Ne8 d5 27. Be2 Ne4 28. Rxe4 dxe4 29. Qxe4 Ra8 30. Qe5 Qe7 31. Bf3 Qxe5 32. fxe5 Be7 33. Nd6 Bd7 34. Nxb7 Rb8 35. Nxc6 Bxc6 36. Bxc6 a3 37. bxa3 Rc8 38. Be4 Bxa3 39. Nd8 Rxd8 40. Rxd8+ 1-0

[Event "WchT U26 11th"]
[Site "Roque Saenz Pena"]
[Date "1997.08.09"]
[Round "4"]
[White "Datu, Idelfonso"]
[Black "Cubas, Jose Fernando"]
[Result "1-0"]
[ECO "A07"]
[BlackElo "2110"]
[PlyCount "105"]
[EventDate "1997.08.06"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Philippines"]
[BlackTeam "Paraguay"]
[WhiteTeamCountry "PHI"]
[BlackTeamCountry "PAR"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. 0-0 Bf5 5. d3 Nbd7 6. Nbd2 e5 7. Qe1 Qc7 8. e4 dxe4 9. dxe4 Bg6 10. Nh4 Bc5 11. a4 a5 12. Nc4 0-0 13. Bd2 b6 14. Kh1 Rfe8 15. Nxg6 hxg6 16. Qe2 Nf8 17. Bc3 N6d7 18. f4 exf4 19. gxf4 Ne6 20. e5 Ndf8 21. Qf3 Rac8 22. Rad1 Red8 23. Rxd8 Qxd8 24. f5 gxf5 25. Qxf5 Rc7 26. Nd6 Qg5 27. Qf3 Qg6 28. Ne4 Ng5 29. Qe2 Nxe4 30. Bxe4 Qe6 31. Qg2 Qh6 32. Bd2 Be3 33. Rf6 g6 34. Bc3 Bc5 35. e6 Nxe6 36. Bxg6 Qc1+ 37. Rf1 Qg5 38. Qxg5 Nxg5 39. Bf5 Ne6 40. Rd1 Ng7 41. Rd8+ Bf8 42. Bd7 Ne6 43. Bxe6 fxe6 44. Be5 Rf7 45. Bd6 Kg7 46. Bxf8+ Rxf8 47. Rxf8 Kxf8 48. Kg2 Kf7 49. Kf3 Kf6 50. Ke4 b5 51. b3 b4 52. h3 c5 53. h4 1-0

[Event "WchT U26 11th"]
[Site "Roque Saenz Pena"]
[Date "1997.08.08"]
[Round "3"]
[White "Ramirez Lopez, Carlos"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "E84"]
[PlyCount "46"]
[EventDate "1997.08.06"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Puerto Rico"]
[BlackTeam "Philippines"]
[WhiteTeamCountry "PUR"]
[BlackTeamCountry "PHI"]

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. g4 b5 10. Ng3 e5 11. dxe5 Nxe5 12. Be2 Nxc4 13. Bxc4 bxc4 14. Bh6 Nd7 15. Bxg7 Kxg7 16. Rb1 Ne5 17. Kf2 Qf6 18. f4 Nxg4+ 19. Kg1 c5 20. e5 dxe5 21. Nd5 Qc6 22. f5 Bb7 23. Qg5 Qxd5 0-1

[Event "Shell Mixed Masters op"]
[Site "Philippines"]
[Date "1997.??.??"]
[Round "2"]
[White "Bancod, Ronald"]
[Black "Datu, Idelfonso"]
[Result "1/2-1/2"]
[ECO "C66"]
[WhiteElo "2405"]
[PlyCount "18"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 d6 5. 0-0 Be7 6. d3 0-0 7. h3 h6 8. Be3 a6 9. Bxc6 bxc6 1/2-1/2

[Event "Greenhills op"]
[Site "Greenhills"]
[Date "1997.??.??"]
[Round "4"]
[White "Biron, Roberto"]
[Black "Datu, Idelfonso"]
[Result "0-1"]
[ECO "C68"]
[PlyCount "100"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "PHI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Qxd4 7. Nxd4 c5 8. Nb3 Be6 9. Be3 b6 10. N1d2 0-0-0 11. a4 a5 12. Nc1 Ne7 13. Nd3 f6 14. Nf4 Bf7 15. 0-0-0 Nc6 16. Nb1 Bd6 17. Nc3 Rhe8 18. f3 Nd4 19. Kb1 c6 20. Nce2 g5 21. Bxd4 cxd4 22. Nd3 c5 23. Nf2 h5 24. h4 Bc4 25. Nd3 Rg8 26. b3 Bf7 27. hxg5 Rxg5 28. g4 hxg4 29. f4 Rgg8 30. Rh6 Rg6 31. Rdh1 Re8 32. Ng3 Bc7 33. Kc1 Kb7 34. Kd1 Reg8 35. Rh7 R8g7 36. Rxg7 Rxg7 37. Rh6 Rg6 38. Rh1 c4 39. bxc4 Bxc4 40. Ne2 g3 41. Rh4 g2 42. Ng1 Rg3 43. Kd2 Bxd3 44. cxd3 b5 45. axb5 a4 46. e5 fxe5 47. fxe5 Bxe5 48. Re4 Re3 49. Rg4 a3 50. Kc2 Re1 0-1

[Event "Greenhills op"]
[Site "Greenhills"]
[Date "1997.??.??"]
[Round "9"]
[White "Datu, Idelfonso"]
[Black "Abriam, Luis"]
[Result "1-0"]
[ECO "A08"]
[PlyCount "69"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "PHI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. d3 e5 6. e4 Nge7 7. Nbd2 0-0 8. c3 d5 9. exd5 Nxd5 10. Nc4 Bf5 11. Re1 Re8 12. Nh4 Be6 13. a4 Qd7 14. a5 Rac8 15. Qa4 f6 16. Nf3 h6 17. Nfd2 Kh8 18. Ne4 Bf8 19. Ne3 Qe7 20. Nxd5 Bxd5 21. Be3 Bxe4 22. dxe4 Qc7 23. Red1 Red8 24. Rd5 Rxd5 25. exd5 Ne7 26. d6 Qxd6 27. Rd1 Qe6 28. Bxb7 Rb8 29. a6 Nf5 30. Qd7 Qb6 31. Qf7 Bg7 32. Qxg6 Nxe3 33. Rd7 Rg8 34. fxe3 c4 35. Be4 1-0

[Event "Greenhills op"]
[Site "Greenhills"]
[Date "1997.??.??"]
[Round "1"]
[White "Datu, Idelfonso"]
[Black "Alidani, Leonardo"]
[Result "1-0"]
[ECO "A04"]
[PlyCount "43"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "PHI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 c5 4. 0-0 Nc6 5. d3 Be7 6. e4 b6 7. Nbd2 Bb7 8. e5 Nd5 9. c4 Ndb4 10. Ne4 d5 11. exd6 Bxd6 12. a3 Na6 13. d4 Ne7 14. Nxd6+ Qxd6 15. Bf4 Qd7 16. Ne5 Qc8 17. d5 0-0 18. d6 Rd8 19. d7 Qc7 20. Nxf7 Qxd7 21. Nxd8 Rxd8 22. Bxb7 1-0

[Event "Greenhills op"]
[Site "Greenhills"]
[Date "1997.??.??"]
[Round "6"]
[White "Datu, Idelfonso"]
[Black "Antonio, Rogelio Jr"]
[Result "0-1"]
[ECO "C00"]
[BlackElo "2525"]
[PlyCount "114"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "PHI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. 0-0 Nf6 5. d3 e6 6. Nbd2 d5 7. e4 Be7 8. Re1 Nc6 9. exd5 Nxd5 10. Nc4 0-0 11. a4 Qc7 12. Bg5 Rad8 13. Bxe7 Ndxe7 14. Qe2 Nf5 15. c3 Nd6 16. Nce5 Nxe5 17. Nxe5 Bxg2 18. Kxg2 Nf5 19. Qe4 Rd5 20. f4 Ne7 21. Rad1 Rfd8 22. Re2 h6 23. Rde1 Nc6 24. Nxc6 Qxc6 25. c4 R5d6 26. Qxc6 Rxc6 27. Re3 Rcd6 28. Rd1 Rd4 29. b3 g5 30. fxg5 hxg5 31. Kf3 Kg7 32. Ke2 g4 33. Rf1 R4d6 34. Kd2 f5 35. a5 Rh8 36. Re2 Rhd8 37. Re3 Kf6 38. axb6 axb6 39. Kc3 Rh8 40. Rf2 Ra8 41. Re1 Rad8 42. Re3 Ra8 43. Re1 Rh8 44. Re3 e5 45. Re1 Rhd8 46. Rd1 Rd4 47. Rfd2 f4 48. gxf4 exf4 49. b4 Ra8 50. bxc5 bxc5 51. Rb2 Ra3+ 52. Kc2 Ra5 53. Re1 f3 54. Re8 Rf4 55. Re1 Ra3 56. Rd1 Ke5 57. Re1+ Kd4 0-1

[Event "World Cities"]
[Site "Jakarta "]
[Date "1997.??.??"]
[Round "2"]
[White "Datu, Idelfonso"]
[Black "Dolmatov, Sergey"]
[Result "0-1"]
[ECO "D79"]
[BlackElo "2565"]
[PlyCount "108"]
[EventDate "1997.07.08"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "INA"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d5 6. c4 c6 7. cxd5 cxd5 8. Nc3 e6 9. Ne5 Nfd7 10. f4 Nc6 11. Nxc6 bxc6 12. Na4 Ba6 13. Be3 Bb5 14. Nc3 Ba6 15. Na4 Qa5 16. Rc1 Bxe2 17. Qxe2 Qxa4 18. b3 Qb4 19. Rfd1 Qb6 20. Bf1 a5 21. Bf2 Rfc8 22. g4 Nf6 23. Bg2 a4 24. Rd3 axb3 25. axb3 Ra3 26. Qd1 Ra2 27. Be3 Ne8 28. f5 exf5 29. gxf5 Nd6 30. fxg6 hxg6 31. Kh1 Re8 32. Rdc3 Rxe3 33. Rxe3 Bh6 34. Qd3 Qd8 35. Rf1 Bxe3 36. Qxe3 Nf5 37. Qe5 Qd6 38. Rxf5 Qxe5 39. Rxe5 Ra1+ 40. Bf1 Rxf1+ 41. Kg2 Rd1 42. Re8+ Kg7 43. Rc8 Rd2+ 44. Kg1 Rxd4 45. Rxc6 Rb4 46. Rd6 Rb5 47. Kg2 Kf8 48. h4 Ke7 49. Ra6 Rxb3 50. h5 g5 51. h6 Rb4 52. Ra7+ Kf6 53. Ra6+ Kf5 54. Rd6 Rh4 0-1

[Event "World Cities"]
[Site "Jakarta "]
[Date "1997.??.??"]
[Round "4"]
[White "Datu, Idelfonso"]
[Black "Gunawan, Johan"]
[Result "1-0"]
[ECO "D02"]
[BlackElo "2235"]
[PlyCount "95"]
[EventDate "1997.07.08"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "INA"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 d5 3. g3 Bg4 4. Bg2 g6 5. c4 Nf6 6. Ne5 Nxe5 7. dxe5 Nd7 8. Qd4 Bf5 9. cxd5 Bg7 10. f4 Bxb1 11. Rxb1 0-0 12. 0-0 f6 13. exf6 exf6 14. e4 Re8 15. Be3 Bf8 16. Qc3 Bd6 17. Bd4 Qe7 18. a3 Qg7 19. Rbe1 g5 20. fxg5 Qxg5 21. Bh3 Ne5 22. Be6+ Kg7 23. Rf5 Qg6 24. Ref1 Rf8 25. R1f4 Kh8 26. Rh4 Rae8 27. Rfh5 Re7 28. Bf5 Qg8 29. Rxh7+ Rxh7 30. Rxh7+ Qxh7 31. Bxh7 Kxh7 32. Bc5 Rf7 33. Bxd6 cxd6 34. Qc8 Kg7 35. Qb8 Rd7 36. Qxa7 Rc7 37. Qb6 Rc2 38. Qxb7+ Kg6 39. Qb3 Rd2 40. a4 f5 41. exf5+ Kxf5 42. a5 Ke4 43. Qb4+ Rd4 44. Qxd4+ Kxd4 45. a6 Nd7 46. a7 Nb6 47. h4 Kxd5 48. h5 1-0

[Event "Greenhills op"]
[Site "Greenhills"]
[Date "1997.??.??"]
[Round "3"]
[White "Datu, Idelfonso"]
[Black "Hernaez, Truman"]
[Result "1/2-1/2"]
[ECO "A07"]
[PlyCount "108"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "PHI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. b3 e6 5. Bb2 Nf6 6. 0-0 h6 7. d3 Be7 8. Nbd2 0-0 9. Qe1 Nbd7 10. e4 Bh7 11. Qe2 Rc8 12. e5 Ne8 13. Ne1 a5 14. a4 Nc7 15. f4 f5 16. d4 g5 17. Nd3 Bg6 18. c4 Na6 19. Rfc1 Nb4 20. Nxb4 Bxb4 21. Bc3 gxf4 22. Bxb4 axb4 23. gxf4 Kh7 24. cxd5 exd5 25. Qe3 Qe7 26. Nf1 Rg8 27. a5 Nf8 28. Bxd5 Bf7+ 29. Bg2 Bd5 30. Ng3 Bxg2 31. Kxg2 Ne6 32. Rf1 Qh4 33. Kh1 Qh3 34. Rad1 Rg4 35. Rf2 Rg6 36. Qd3 Rf8 37. Ne2 Qh4 38. Rf3 Rg4 39. Rh3 Qf2 40. Qf3 Qxf3+ 41. Rxf3 Rd8 42. Rg3 Rxg3 43. hxg3 Rd5 44. Ra1 Nxd4 45. Nxd4 Rxd4 46. a6 bxa6 47. Rxa6 Rd3 48. Kg2 Rc3 49. Rb6 c5 50. Rc6 Kg7 51. g4 fxg4 52. f5 h5 53. f6+ Kg6 54. Rc7 Rf3 1/2-1/2

[Event "World Cities"]
[Site "Jakarta "]
[Date "1997.??.??"]
[Round "8"]
[White "Datu, Idelfonso"]
[Black "Juswanto, Denny"]
[Result "0-1"]
[ECO "A07"]
[BlackElo "2435"]
[PlyCount "70"]
[EventDate "1997.07.08"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "INA"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. b3 Bf5 5. Bb2 Nbd7 6. 0-0 e6 7. d3 Be7 8. Nbd2 0-0 9. Nh4 Bg4 10. h3 Bh5 11. g4 Bg6 12. Nxg6 hxg6 13. e4 dxe4 14. dxe4 e5 15. Nc4 Qc7 16. a4 Rad8 17. Qe2 Rfe8 18. Rad1 Nh7 19. Ne3 Nhf8 20. Qc4 Ne6 21. Rfe1 a6 22. b4 b5 23. Qb3 Nb6 24. a5 Na4 25. c3 Bg5 26. Bc1 Bf4 27. Qc2 Qe7 28. Bf1 Qf6 29. Rxd8 Rxd8 30. Rd1 Rxd1 31. Qxd1 Nxc3 32. Qc2 Nd4 33. Qb2 Nxe4 34. Bg2 Ng5 35. Kh1 Ngf3 0-1

[Event "Greenhills op"]
[Site "Greenhills"]
[Date "1997.??.??"]
[Round "5"]
[White "Datu, Idelfonso"]
[Black "Legaspi, Gary"]
[Result "1-0"]
[ECO "A05"]
[PlyCount "55"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "PHI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Nbd7 4. 0-0 e6 5. d3 b6 6. Nbd2 Bb7 7. e4 c5 8. e5 Ng4 9. Re1 Qc7 10. Qe2 h5 11. h4 Be7 12. Nf1 0-0-0 13. a4 Nb8 14. a5 Nc6 15. axb6 axb6 16. Bf4 Rhg8 17. c3 Kd7 18. Ng5 Ke8 19. Nh2 Nxh2 20. Qxh5 Bxg5 21. Bxg5 Ra8 22. Rxa8+ Bxa8 23. Kxh2 Bb7 24. Bxd5 exd5 25. e6 g6 26. Qh7 Rf8 27. exf7+ Kd7 28. Re8 1-0

[Event "Shell Mixed Masters op"]
[Site "Philippines"]
[Date "1997.??.??"]
[Round "7"]
[White "Datu, Idelfonso"]
[Black "Ortiz, Eduardo"]
[Result "0-1"]
[ECO "E69"]
[PlyCount "86"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PHI"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d6 6. c4 Nbd7 7. Nc3 e5 8. e4 Re8 9. h3 c6 10. Be3 exd4 11. Nxd4 Nc5 12. Qc2 Qe7 13. Rfe1 Bd7 14. f3 Nh5 15. Kh2 Be5 16. f4 Bg7 17. Rad1 a5 18. Qf2 a4 19. g4 Nf6 20. e5 dxe5 21. Nf5 gxf5 22. Bxc5 Qe6 23. Rd6 Qxc4 24. g5 Qxf4+ 25. Qxf4 exf4 26. Rxe8+ Nxe8 27. Rxd7 a3 28. bxa3 Bxc3 29. Rxb7 Rc8 30. Rb6 Be5 31. Bf3 Ng7 32. Rxc6 Rd8 33. h4 Ne6 34. Be7 Rd2+ 35. Kh1 Kg7 36. h5 h6 37. gxh6+ Kxh6 38. Rb6 Rf2 39. Bd5 f3 40. Kg1 Bd4 41. Rb4 Rg2+ 42. Kh1 Rg1+ 43. Kh2 f2 0-1

