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Peter Heine Nielsen vs Bartlomiej Macieja
SmartFish Chess Masters (2004), Drammen NOR, rd 3, Dec-29
Nimzo-Indian Defense: Classical. Berlin Variation Pirc Variation (E39)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Dec-29-04  themindset: 13...Bxf3?

That really made me cringe... i could tell that the g-file would become a terror for black.

Dec-31-04  Milo: It seems black is totally lost after 21.Ne4, as played.

21...e5 22.Bxh5 Qxh5 23.Nf6+
21...f6 22.Bxh5 Qxh5 23.Nxf6+ (best?)
21...Nf6 22.Nxf6+
21...g6 22.Bxh5 Qxh5 Nf6+

I think black is probably gone much, much earlier, though.

Jan-09-05
Premium Chessgames Member
  patzer2: After four consecutive Queen moves, my initial thought was Black is surely lost after 20. Rdg1!, due to the strong threats created by 21. Ne4!

Indeed, as <Milo> indicates, Black appears to have a clearly lost game after 20...Qh4?! 21. Ne4!

Although White may indeed have a forced win with "best play" after 20. Rdg1!, Black can complicate and create practical drawing chances with 20...Nf6!? 21. Rd3 Nd4!?

Play could continue 21...Nd4!? 22. exd4 Qxd4 23. Kc2 Rfc8 24. Rhg1 g6 25. Kb1 (25. Qc1 Nd5 26. cxd5 Ra2+ 27. Kb3 Rxe2 28. Nxe2 Qxd5+ 29. Kb2 Rxc1 =) 25...Ne4 (25...Qxf4 26. Rf1 Qh4 27. Rgf3 ) 26. Rd1 Nxc3+ 27. Rxc3 Qe4+ 28. Qc2 Qxf4 29. Rxd7 Qe5 30. Kb2 Ra6 31. Qd2 Rca8 32. Rd8+ Rxd8 33. Qxd8+ Kg7 34. Qd3 Qxh2 35. c5 Ra8 36. c6 Qc7 37. b5 e5 38. Qe3 Ra4 39. Rc1 Rd4 40. Ra1 h5 41. Kc2 Rd5 42. Ra4 Qd6 43.Kb2 Rd4 44. Ra7 Qb4+ 45. Kc2 Rd5 46. Bd3 h4 47. Qf3 Rc5+ 48. Kd1 Qb3+ 49. Ke1 h3 50. Qe4 Rc1+ 51. Kf2 Qb2+ 52. Kg3 Rg1+ 53. Kxh3 Qf2 54. Qxe5+ Kh6 55. Qh8+ Kg5 56. Qe5+ Kh6 57. Qh8+ Kg5 58. Qe5+ = with a draw by repetition.

Jan-09-05
Premium Chessgames Member
  patzer2: I had thought Black might be able to force a draw after 20...Nf6 21. Rd3 e5!? (avoiding the piece sacrifice in the line posted above). However the analysis below, validated and checked with Fritz 8, seems to indicate it results in a win for White

20...♘f6 21. ♖g3 e5!?

20...♘f6 21. ♖g3 e5!? 22. ♖hg1

[22. Nd1?! 22...Ne4+! 23. Kd3 Nxg3 24. Nxf2 Nxh1 25. Nxh1 Ra2! 26. Qc3 Rfa8! 27. Bb1 exf4 28. exf4 R8a3 29. Bb3 Ra1! 30. Qb2 (30. Nf2?? Rb1 ) 30...R1a2 31. Qc3 Ra1 = is a forced draw by repetition of moves]

20...♘f6 21. ♖g3 e5!? 2. ♖hg1 ♕xh2 23. ♖xg7+ ♔h8 24. ♖1g2 ♕h3 25. b5! ♖g8 26. ♖xg8+ ♘xg8 27. ♖f2 ♕h4 28. ♖f1 ♘ce7 29. fxe5 ♔g7 30. ♕b1 ♘g6 31. ♘d5 ♖e8 32. ♘xb6 ♕d8 33. c5 ♘xe5 34. ♘c4 ♘xc4+ 35. ♗xc4 and White's passed pawn appears to be decisive.

Jan-09-05
Premium Chessgames Member
  patzer2: Peter Nielsen initiates a pretty positional pawn sacrifice with 18. f4! Qg2 19. Kd2 Qxf2 20. Rdg1!, "gambiting" the f2 pawn for a strong attacking advantage.
Jan-09-05
Premium Chessgames Member
  patzer2: Nielsen's 21. Ne4 is a subtle "double attack," threatening to win the Queen using the "Knight Fork and the Pin" after 21...g6?? 22. Bxh5 Qxh5 23. Nf6+ King moves 24. Nxh5 or to win a decisive piece as in the game continuation. Notice how the combination also utilizes deflection (e.g. removing the guard) with 22. Bxh5, along with the mate threat on g7, as essential elements in making the "double attack" work.

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