Author: Mats Winther
Date: 13:09:35 04/11/98
Go up one level in this thread
You misunderstood me a little. I have not been complaining about the
Fritz program. I meant the Fritz5 module. The program in itself is
wonderful. I use it all the time.
After analyzing your game it is clear that -Na5 is not that bad,
although white still has got the advantage. The pawn chain is disrupted
but black gets counterplay on the b-file.
Nevertheless -b4 must be better since he achieves equality. Instead
black gets into a positionally worse position after -Na5. Perhaps -Nd8
is playable too. This maintains the pawn chain and black still has a
pawn.
Consequently, -Na5 is still the worst alternative. It deserves a
question mark but it is not easy to refute. Obviously my example game
was not so well chosen.
My comments are in the game.
/Mats
[Event "?"]
[Site "test game"]
[Date "1998.??.??"]
[Round "?"]
[White "Hiarcs6"]
[Black "Fritz5"]
[Result "1/2-1/2"]
[ECO "D24"]
[PlyCount "121"]
1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 5. e4 b5 6. e5 Nd5 7. a4 Nxc3
8. bxc3
Qd5 9. Be2 Bb7 10. O-O e6 11. Ne1 Qd7 12. Bf3 Nc6 13. Nc2 Rb8 14. Qe2
Be7 15.
Rd1 O-O 16. Bf4 Na5 17. axb5 Bxf3 18. Qxf3 Rxb5 19. Ne3 Rfb8 20. Ra4 Bf8
21. h4
Kh8 22. h5 h6 23. Nxc4 Nxc4 24. Rxc4 {Now things have settled and black
played
much better here than in the previous game. But because of 16.Na5 the
pawn
chain was split. To my meaning white has an advantage here since black
has
three pawn islands whilst white has only one.}
24... R8b6 25. Qa8 Kg8 26. Ra1 Qe7 27. Qe4 (27. g3 Qd7 28. Kh2 Rb2 29.
Be3 Rb1
30. Ra5 30... Re1 31. Rca4 Rbb1 32. Rxa6 Qb5 33. c4 Qb3 34. Qf3
34... Rbd1 {unclear})
27... Qh4 28. Rxc7 {this allows counterplay, he should have played g3.
Then white is better.}
(28. g3 Qxh5 29. Rxc7 Rb2 30. c4 Qg4 31. d5 exd5 32. cxd5 g5 33. e6 gxf4
34.
Rxf7 Bg7 35. e7 Rb1+ 36. Kg2 f3+ 37. Qxf3 Qc8 38. Rxb1 Rxb1 39. Qf5 {
and white wins})
28... f5 29. exf6 Rxh5 30. Kf1 Rb2 31. Qxe6+ Kh7 32. Qe4+ Kg8
33. f7+ Kh8 34. g3 Qh1+ 35. Qxh1 Rxh1+ 36. Kg2 Rxa1 37. Rc8 Kh7 38. Rxf8
Kg6
39. d5 Rd1 40. d6 Rb7 41. Ra8 Kxf7 42. Rxa6 g5 43. Be3 43... g4 {Black
survives by mate threaths. Otherwise the white pawns are unstopable.}
44. Ra4 h5 45. Rd4 Rxd4 46. Bxd4 Rb2 47. Bc5 Ke6 48. Bb4 Kd7 49. Ba3 Ra2
50. Bb4
Ra1 51. f4 Ra2+ 52. Kf1 Kc6 53. Kg1 Rd2 54. Kh1 Rc2 55. Kg1 Re2 56. Kf1
Rd2 57.
Kg1 Kd7 58. Kh1 Ke6 59. Kg1 Rc2 60. Kf1 Rb2 61. Bc5 1/2-1/2
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