| ECO A04 in 2007 play it! ostenstad berge defeats white's datu idelfonso in 114 moves | 1. Nf3 c5 2. g3 Nc6 3. Bg2 e5 4. d3 g6 5. O-O Bg7 6. e4 Nge7 7. Nbd2 O-O 8. c3 d5 9. Re1 d4 10. cxd4 cxd4 11. a4 Bh6 12. Nc4 Bxc1 13. Qxc1 f6 14. a5 Be6 15. Qd2 Qd7 16. Rec1 Nc8 17. a6 Rb8 18. Ne1 Nd6 19. f4 Nxc4 20. dxc4 bxa6 21. Nd3 a5 22. fxe5 fxe5 23. Qg5 Qg7 24. Ra3 Qf6 25. Qd2 Qe7 26. c5 Kg7 27. Bf1 Rf3 28. Ne1 Rxa3 29. bxa3 Qb7 30. a4 Qb4 31. Qxb4 axb4 32. Bb5 Bd7 33. Nd3 a5 34. Nb2 Kf6 35. Nc4 Ke7 36. Nb6 Rf8 37. Kg2 Kd8 38. h3 Kc7 39. Nd5+ Kb7 40. Nb6 Be6 41. Nc4 Bxc4 42. Bxc4 Kc7 43. h4 Nb8 44. Bd5 Na6 45. g4 Rf4 46. Kg3 d3 47. Kh3 d2 48. Rd1 Nxc5 49. Rxd2 Nxe4 50. Rc2+ Nc3 51. g5 Rf1 52. Kg3 Kd6 53. Bb3 Kc5 54. Rh2 Ne4+ 55. Kg2 Rf2+ 56. Kg1 Rxh2 57. Kxh2 Nd2 |
| ECO A04 in 1999 play it! ostenstad berge defeats white's hole oystein in 66 moves | 1. Nf3 d6 2. g3 e5 3. d3 f5 4. Bg2 Nf6 5. c4 g6 6. Nc3 Bg7 7. Rb1 a5 8. a3 O-O 9. b4 axb4 10. axb4 Nc6 11. b5 Ne7 12. Qb3 h6 13. Nd2 Kh8 14. Ba3 Rb8 15. Nd5 Nexd5 16. cxd5 b6 17. O-O Bd7 18. Rfc1 Ne8 19. Rc4 Ra8 20. Bb2 Qe7 21. Rbc1 Ra5 22. Rb4 g5 23. Nc4 Ra7 24. Na3 h5 25. Ra4 Rxa4 26. Qxa4 h4 27. f3 g4 28. f4 h3 29. Bf1 Kh7 30. fxe5 Bxe5 31. d4 Bxg3 32. hxg3 Qe3+ 33. Kh1 f4 |
| ECO A04 in 1986 play it! ostenstad berge defeats white's gausel einar in 80 moves | 1. Nf3 f5 2. d4 Nf6 3. Nc3 e6 4. Bg5 d5 5. e3 Be7 6. Be2 Nbd7 7. O-O O-O 8. Bf4 c6 9. Ne5 Nxe5 10. Bxe5 Nd7 11. f4 Nxe5 12. fxe5 Bd7 13. Nb1 Qb6 14. b3 Bg5 15. Rf3 f4 16. exf4 Rxf4 17. Rxf4 Bxf4 18. Kh1 Be3 19. c3 c5 20. Bd3 cxd4 21. Na3 dxc3 22. Qh5 Bh6 23. Rf1 Qd8 24. Qf7+ Kh8 25. Nc2 Qe8 26. Qf2 b6 27. Nd4 g6 28. h4 Qe7 29. Qg3 Rf8 30. Rf3 Rxf3 31. Nxf3 Qa3 32. Ng5 Qc1+ 33. Kh2 Bxg5 34. hxg5 Kg8 35. Qf2 Qxg5 36. Qd4 Qh6+ 37. Kg1 Qf8 38. b4 Qc8 39. Qh4 Ba4 40. Ba6 c2 |
| ECO A05 in 1999 play it! ostenstad berge defeats white's gausel einar in 60 moves | 1. Nf3 Nf6 2. c4 b6 3. d4 e6 4. e3 Bb7 5. Bd3 Be7 6. O-O O-O 7. Nc3 d5 8. cxd5 exd5 9. b3 Nbd7 10. Bb2 c5 11. Rc1 a6 12. Qe2 b5 13. dxc5 Nxc5 14. Rfd1 Qb6 15. Nd4 Rfe8 16. Bb1 b4 17. Na4 Nxa4 18. bxa4 g6 19. Qf3 Ne4 20. a5 Qxa5 21. Nf5 Nc3 22. Nh6+ Kg7 23. Qxf7+ Kxh6 24. Rxc3 bxc3 25. Bc1 Qb6 26. e4+ Bg5 27. Rd3 Bc8 28. Bxg5+ Kxg5 29. g3 Qxb1+ 30. Kg2 Bh3+ |
| ECO A04 in 1990 play it! ostenstad berge defeats white's engqvist thomas in 98 moves | 1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. d4 Bg7 5. O-O O-O 6. c4 d6 7. d5 a5 8. Nd4 Na6 9. Nc3 Nc5 10. b3 Bd7 11. Rb1 Qe8 12. a3 c6 13. b4 axb4 14. axb4 Nce4 15. Nxe4 Nxe4 16. dxc6 bxc6 17. Bb2 Rb8 18. Ba1 Qf7 19. Qd3 e5 20. Nf3 Qe7 21. Rfd1 Be6 22. c5 Rfd8 23. Qc2 Bd5 24. Rxd5 cxd5 25. c6 Rdc8 26. b5 Qa7 27. e3 Qc5 28. Qxc5 Nxc5 29. Nxe5 Bxe5 30. Bxd5+ Kf8 31. Bxe5 dxe5 32. b6 Na6 33. b7 Rd8 34. Ra1 Nc7 35. e4 Ke7 36. f3 Rf8 37. Re1 f4 38. g4 Kd6 39. Kf2 Nb5 40. h4 Kc7 41. h5 g5 42. h6 Nd4 43. Rh1 Nxc6 44. Rh5 Rg8 45. Be6 Ne7 46. Rh1 Rg6 47. Bf7 Rc6 48. Rh5 Rxb7 49. Kg2 Rb2+ |
| ECO A05 in 1997 play it! ostenstad berge defeats white's jaeger frode bul in 44 moves | 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 Nbd7 7. O-O e5 8. Be3 c6 9. d5 c5 10. Ne1 Kh8 11. g4 Ng8 12. Qd2 f5 13. gxf5 gxf5 14. exf5 Ne7 15. Kh1 Nxf5 16. Bg5 Bf6 17. Ne4 Bxg5 18. Nxg5 Nf6 19. Bd3 Qe7 20. f3 Nh5 21. Ng2 Nf4 22. Nxf4 Qxg5 |
| ECO A05 in 2002 play it! ostenstad berge defeats white's royset paal in 72 moves | 1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. e4 Nc6 5. d4 cxd4 6. Nxd4 Bb4 7. Nxc6 bxc6 8. Bd3 e5 9. O-O d6 10. Bg5 Bxc3 11. bxc3 Qa5 12. Bc2 Ke7 13. f4 Qxc3 14. fxe5 Qxe5 15. Qd2 Rd8 16. Rae1 Be6 17. Ba4 Rab8 18. Bb3 Kf8 19. Rxf6 gxf6 20. Bh4 Ke7 21. Rf1 Qc5+ 22. Kh1 Rg8 23. Rxf6 Kd7 24. Qf4 Rbf8 25. h3 a6 26. Qf1 Rg6 27. Rxg6 hxg6 28. Qf6 Re8 29. Bg3 Qe3 30. Kh2 Qxe4 31. Qf2 Rc8 32. Qd2 d5 33. Qb4 dxc4 34. Qb7+ Ke8 35. Bd6 Bd7 36. Bd1 Qd4 |
| ECO A04 in 1991 play it! ostenstad berge defeats white's ilinsky vladimir in 78 moves | 1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. d4 Bg7 5. c4 O-O 6. b4 d6 7. Bb2 c6 8. Nbd2 Na6 9. a3 Nc7 10. O-O Kh8 11. Qc2 Be6 12. e3 Qd7 13. Ne1 Rae8 14. Nd3 Bg8 15. Rfe1 Qc8 16. a4 a6 17. Rac1 Qb8 18. Qb1 Rd8 19. f4 d5 20. c5 Qc8 21. Qc2 Ne4 22. Nf3 Bf6 23. Bc3 Be6 24. Nfe5 Rg8 25. Rf1 Rdf8 26. Be1 Rg7 27. Qe2 Rfg8 28. Rc2 g5 29. fxg5 Bxg5 30. Nf4 Bxf4 31. Rxf4 Nf6 32. Qd3 Ng4 33. Nxg4 Rxg4 34. Qf1 R4g5 35. Rh4 Bf7 36. Qf4 Ne6 37. Qe5+ R8g7 38. Rf4 Nxf4 39. Qxf4 R5g6 |
| ECO A05 in 2002 play it! ostenstad berge defeats white's gausel einar in 114 moves | 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. b3 Be7 5. Bg2 O-O 6. O-O c5 7. cxd5 Nxd5 8. Bb2 Nc6 9. Nc3 Nxc3 10. Bxc3 Qb6 11. e3 Bd7 12. Qb1 Rfd8 13. Rc1 Be8 14. Qe4 Bd7 15. h4 h6 16. g4 e5 17. g5 hxg5 18. hxg5 Be8 19. Nxe5 Bxg5 20. Nc4 Qc7 21. Qf5 Qe7 22. f4 Bh4 23. a4 Bd7 24. Qe4 Be6 25. f5 Bd5 26. Qxe7 Bxe7 27. Rf1 Bxg2 28. Kxg2 Bf6 29. Bxf6 gxf6 30. Rh1 Kf8 31. Rh4 Ke7 32. d4 Rd5 33. Re4+ Kd7 34. Rf4 cxd4 35. exd4 Kc7 36. Ne3 Rxd4 37. Rxd4 Nxd4 38. Rc1+ Nc6 39. Nd5+ Kd6 40. Nxf6 Ke5 41. Nd7+ Kxf5 42. Nc5 b6 43. Nd3 Nd4 44. b4 Rg8+ 45. Kf1 Rg3 46. Ne1 Ra3 47. Rc7 Rxa4 48. Rxf7+ Ke6 49. Rh7 Kd5 50. Nd3 Ra1+ 51. Kf2 Ra2+ 52. Ke3 Re2+ 53. Kf4 Re4+ 54. Kg5 Kc4 55. Nf2 Re5+ 56. Kg4 Nb5 57. Kf4 Re8 |
| ECO A04 in 1994 play it! ostenstad berge defeats white's bjerke richard in 64 moves | 1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. Nc3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Qa4 Qb6 8. Bd2 a5 9. Qc2 Qa7 10. e3 Nf6 11. Be2 O-O 12. O-O d6 13. h3 Nd7 14. f4 Nc5 15. g4 f5 16. Kh2 Rb8 17. g5 Ne4 18. Bd3 Nxd2 19. Qxd2 a4 20. Rac1 Be6 21. h4 Qa5 22. Rc2 Rxb2 23. Rxb2 Bxc3 24. Qc2 Bxb2 25. Qxb2 a3 26. Qe2 Rb8 27. Rb1 Rxb1 28. Bxb1 Qc3 29. Bd3 d5 30. cxd5 Bxd5 31. Kg3 Qa1 32. Bc4 Qg1+ |
| ECO A07 in 1999 play it! ostenstad berge defeats white's dannevig oystein in 92 moves | 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. e4 O-O 7. Nbd2 a5 8. a4 Nbc6 9. Re1 dxe4 10. Nxe4 h6 11. h3 Kh7 12. Bd2 Nd5 13. Re2 Rb8 14. Qe1 b6 15. Bc3 f5 16. Ned2 Nxc3 17. bxc3 Ba6 18. Re3 Qd6 19. Qb1 Rbd8 20. Qb3 e4 21. dxe4 f4 22. gxf4 Qxf4 23. Nc4 g5 24. Rd3 Bxc4 25. Qxc4 Ne5 26. Nxe5 Bxe5 27. f3 Bd6 28. Rad1 Qh2+ 29. Kf1 Bc5 30. Rd4 Rd6 31. Qe2 Qe5 32. Rd5 Qh2 33. R5d4 Kh8 34. R1d3 Rdf6 35. Ke1 Qg1+ 36. Qf1 Bxd4 37. cxd4 Qxf1+ 38. Kxf1 Rc6 39. c3 Rc4 40. h4 Rxa4 41. hxg5 hxg5 42. Kf2 Kg7 43. e5 Ra1 44. Bh3 a4 45. Be6 a3 46. Kg2 a2 |
| ECO A04 in 1995 play it! ostenstad berge defeats white's bjerke richard in 61 moves | 1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. Nc3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Qa4 Qb6 8. Bd2 a5 9. Qc2 Qa7 10. e3 Nf6 11. Be2 O-O 12. O-O d6 13. h3 Nd7 14. f4 Nc5 15. g4 f5 16. Kh2 Rb8 17. g5 Ne4 18. Bd3 Nxd2 19. Qxd2 a4 20. Rac1 Be6 21. h4 Qa5 22. Rc2 Rxb2 23. Qc1 Rd8 24. Be4 Rxa2 25. Qd1 Ra1 26. Nd5 Re8 27. Qd4 c5 28. Rcc1 Rxc1 29. Qb2 Rxf1 30. Qc1 Rb8 31. Bh1 |
| ECO A05 in 1984 play it! ostenstad berge defeats white's navrotescu catal in 66 moves | 1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. e4 Ndb4 10. d5 Nd4 11. Nxd4 cxd4 12. a3 Nxd5 13. Qxd4 Nxc3 14. Qxc3 Bd7 15. Rd1 Qe8 16. Bf4 Bc6 17. Rd2 Rc8 18. Qe3 a6 19. Rad1 Ba4 20. b3 Bc5 21. Qf3 Bc6 22. Bd6 Bxd6 23. Rxd6 Qe7 24. Qd3 Qc7 25. a4 Qa5 26. Qd4 h6 27. Bf1 Qh5 28. Qe3 Qe5 29. Bg2 Qb2 30. f3 Be8 31. f4 Rc3 32. R6d3 Qxb3 33. f5 Qxd1+ |
| ECO A05 in 2004 play it! ostenstad berge defeats white's gausel einar in 90 moves | 1. Nf3 Nf6 2. c4 c5 3. Nc3 d5 4. cxd5 Nxd5 5. e3 Nxc3 6. bxc3 g6 7. h4 h6 8. Bb5+ Nd7 9. a4 Bg7 10. Ba3 b6 11. a5 O-O 12. d4 Qc7 13. O-O Bb7 14. a6 Bc6 15. Qa4 Rac8 16. Rac1 Rfd8 17. Rfd1 Bxb5 18. Qxb5 e6 19. c4 cxd4 20. exd4 e5 21. c5 exd4 22. cxb6 Qxb6 23. Qxb6 Nxb6 24. Rxc8 Rxc8 25. Nxd4 Nc4 26. Bb4 Nb2 27. Rd2 Nc4 28. Rd1 Nb2 29. Rd2 Rc1+ 30. Kh2 Rc4 31. Rxb2 Bxd4 32. Rb3 Bxf2 33. g3 Rc2 34. Kh3 f5 35. Rb1 Ra2 36. h5 g5 37. g4 f4 38. Bc5 Bxc5 39. Rb8+ Kf7 40. Rf8+ Ke6 41. Re8+ Kd5 42. Re5+ Kd4 43. Rd5+ Ke3 44. Rxc5 Rxa6 45. Rc2 Rf6 |
| ECO A10 in 2003 play it! ostenstad berge defeats white's lie espen in 78 moves | 1. c4 g6 2. g3 Bg7 3. Bg2 e5 4. Nc3 d6 5. e4 Nc6 6. Nge2 f5 7. d3 Nh6 8. h4 Nf7 9. Be3 Nd4 10. h5 c6 11. Qd2 Qa5 12. Rb1 a6 13. b4 Qc7 14. a4 O-O 15. hxg6 hxg6 16. exf5 Bxf5 17. f3 Nxe2 18. Kxe2 Be6 19. a5 d5 20. Bb6 Qd7 21. cxd5 cxd5 22. Rh2 e4 23. dxe4 d4 24. Nd5 Bxd5 25. exd5 Ne5 26. Qa2 Qb5+ 27. Kf2 Ng4+ 28. Kg1 Nxh2 29. Kxh2 Rae8 30. d6+ Kh7 31. Bc5 Re2 32. Qb3 Rxg2+ 33. Kxg2 Qe2+ 34. Kh1 Rxf3 35. Qb2 Qe4 36. Qh2+ Bh6 37. Rg1 Rf5+ 38. Rg2 Rf1+ 39. Qg1 Rxg1+ |
| ECO A20 in 1986 play it! ostenstad berge defeats white's bern ivar in 56 moves | 1. c4 e5 2. g3 f5 3. Nc3 Nf6 4. Bg2 c6 5. Qc2 d6 6. d3 Be7 7. Nf3 O-O 8. c5 Na6 9. cxd6 Bxd6 10. a3 Nc7 11. O-O Qe8 12. b4 Qh5 13. Nd1 f4 14. Nb2 Bh3 15. Nc4 Rad8 16. Bxh3 Qxh3 17. Ncxe5 Bxe5 18. Nxe5 fxg3 19. fxg3 Ng4 20. Nf3 Nd5 21. Qa2 Nxh2 22. Nxh2 Qxg3+ 23. Kh1 Rxf1+ 24. Nxf1 Qh3+ 25. Kg1 Rf8 26. Be3 Kh8 27. Bf2 Nf4 28. Ne3 Rf6 |
| ECO A10 in 1983 play it! ostenstad berge defeats white's schandorff lars in 80 moves | 1. c4 Nc6 2. Nc3 e5 3. e3 Nf6 4. Nf3 Be7 5. Be2 O-O 6. O-O Re8 7. d4 exd4 8. Nxd4 Bf8 9. Nd5 Nxd5 10. cxd5 Nxd4 11. Qxd4 c5 12. Qd2 d6 13. b4 b6 14. Bb2 Bd7 15. Rfe1 Be7 16. Bd3 Bf6 17. e4 Bxb2 18. Qxb2 cxb4 19. Qxb4 Qf6 20. Rac1 Rac8 21. Bb5 Bxb5 22. Qxb5 Qd4 23. Rc7 Rcd8 24. Qc4 Qxc4 25. Rxc4 Rc8 26. Rec1 Rc5 27. Rxc5 dxc5 28. Rc4 Kf8 29. f3 Ke7 30. Ra4 a5 31. e5 Rd8 32. d6+ Ke6 33. Re4 Kd5 34. Re1 f6 35. f4 fxe5 36. fxe5 b5 37. Kf2 Rf8+ 38. Kg3 c4 39. d7 Ke6 40. Rd1 Rd8 |
| ECO A13 in 2003 play it! ostenstad berge defeats white's kristensen bjark in 106 moves | 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. b3 c5 5. Bg2 Nc6 6. O-O Be7 7. Bb2 d4 8. d3 O-O 9. Nbd2 e5 10. a3 Re8 11. Ne1 Bg4 12. Nc2 Qd7 13. Re1 h5 14. b4 cxb4 15. axb4 Nxb4 16. Nxb4 Bxb4 17. Ba3 Bc3 18. Rb1 Rab8 19. Bb4 Bh3 20. Bh1 b5 21. cxb5 Nd5 22. Bxc3 Nxc3 23. Bc6 Qc7 24. Qc2 Nxb1 25. Rxb1 Bd7 26. Rc1 Bxc6 27. bxc6 Rb6 28. Qa4 Re6 29. Ra1 Rbxc6 30. Qxa7 Rc1+ 31. Kg2 Qc6+ 32. Nf3 Rxa1 33. Qxa1 Re8 34. h4 Qc2 35. Kf1 f6 36. Ne1 Qc6 37. Nf3 Qd5 38. Qa7 Rd8 39. Qe7 Qd7 40. Qxd7 Rxd7 41. Nd2 Kf7 42. Ne4 Ra7 43. f3 Ke6 44. Kf2 Ra2 45. Kf1 Kd5 46. Kf2 Ra1 47. Kg2 Ra2 48. Kf2 f5 49. Ng5 f4 50. g4 Ra1 51. Nh3 Ra6 52. Ng5 Rh6 53. Nf7 hxg4 |
| ECO A10 in 1997 play it! ostenstad berge defeats white's bern ivar in 76 moves | 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Ne7 5. Nf3 f5 6. d3 O-O 7. Bd2 a5 8. a3 c6 9. h4 h6 10. Qc1 Kh7 11. b4 d5 12. bxa5 d4 13. Na4 Rxa5 14. Qc2 e4 15. Ng1 e3 16. Bxa5 Qxa5+ 17. Kf1 f4 18. Be4 fxg3 19. f3 Qh5 20. Rb1 Rf4 21. Qc1 Rxh4 22. Rxh4 Qxh4 23. f4 Nf5 24. Bg2 Qxf4+ 25. Nf3 Nh4 26. Nc5 Nxf3 27. exf3 Nd7 28. Nxd7 Bxd7 29. Ke2 Bc8 30. Qb2 Bf5 31. Qb3 h5 32. Rh1 Qe5 33. Qb1 Qa5 34. Qa2 Qc3 35. Rd1 h4 36. a4 Bf8 37. f4 Ba3 38. Be4 Bb2 |
| ECO A10 in 1995 play it! ostenstad berge defeats white's bern ivar in 78 moves | 1. c4 g6 2. Nc3 Bg7 3. Nf3 c5 4. g3 Nc6 5. Bg2 d6 6. O-O e5 7. Ne1 Be6 8. d3 Nge7 9. Nc2 d5 10. cxd5 Nxd5 11. Ne3 Nde7 12. Qd2 O-O 13. b3 Rb8 14. Bb2 f5 15. f4 exf4 16. gxf4 b5 17. Rad1 Qd6 18. Kh1 Rfd8 19. Ba1 Nd4 20. Qe1 Bf7 21. Qf2 Re8 22. Rc1 Nec6 23. Ncd5 Re6 24. Rfe1 Rbe8 25. Rcd1 Nb4 26. Rd2 Nxd5 27. Nxd5 Nxe2 28. Rdxe2 Rxe2 29. Rxe2 Rxe2 30. Qxe2 Bxa1 31. Qe7 Qxe7 32. Nxe7+ Kf8 33. Nc8 a6 34. Bb7 c4 35. dxc4 bxc4 36. bxc4 Bxc4 37. a4 Bd4 38. Nd6 Bd3 39. Bd5 Be3 |
