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Old February 28th 10, 02:20 AM posted to rec.games.chess.analysis
sd sd is offline
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Default alekhine endgame

On Feb 20, 8:48*pm, latvian attack wrote:
Hi,

I am trying to analyze this endgame.
[Event "?"]
[Site "New York"]
[Date "1927.??.??"]
[Round "?"]
[White "Alekhine,Alexander"]
[Black "Nimzowitsch,Aaron"]
[Result "1-0"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "E32"]
[TimeControl "0"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 5. Bg5 Nbd7 6. e3 b6 7. Bd3
Bb7 8. f3
Bxc3+ 9. Qxc3 c5 10. Nh3 h6 11. Bf4 Qe7 12. Bg3 e5 13. dxe5 dxe5 14. O-
O-O g6
15. Bc2 O-O-O 16. Ba4 Rhe8 17. Nf2 Qe6 18. Nd3 Re7 19. Rd2 Rde8 20.
Rhd1 Bc6
21. Bc2 Nh5 22. Nxc5 Nxc5 23. Rd6 Nxg3 24. hxg3 Qxd6 25. Rxd6 Rc7 26.
b4 Nb7
27. Rxc6 Rxc6 28. Ba4 Ree6 29. Bxc6 Rxc6 30. Qxe5 Rxc4+ 31. Kd2 h5 32.
a3 Rc7
33. Qe8+ Nd8 34. e4 Rd7+ 35. Ke3 Rc7 36. Kf4 Rc3 37. a4 Rc2 38. Qe7
Rc7 39.
Qf6 Rc2 40. Qe7 Rc7 41. Qd6 Ne6+ 42. Ke5 Nd8 43. Qd5 Rc6 44. Kf4 Ne6+
45. Ke3
Rc3+ 46. Ke2 Rc7 47. f4 Nd8 48. Ke3 Rc3+ 49. Kd4 Rc7 50. Ke5 a5 51.
Qa8+ Kd7
52. b5 Ke7 53. f5 f6+ 54. Kd4 Rd7+ 55. Ke3 gxf5 56. exf5 Nf7 57. Qf3
Ne5 58.
Qxh5 Rd3+ 59. Kf2 Rd2+ 60. Kf1 Rd4 61. Qh7+ Kd6 62. Qb7 Nd7 63. Qc6+
Ke7 64.
Qe6+ Kd8 65. Qb3 Rb4 66. Qd1 Ke7 67. Qe2+ Kd8 68. Qa2 Ke7 69. Ke2 Re4+
70.
Kf3 Rb4 71. Ke3 Nc5 72. Qg8 Nd7 73. g4 Rxa4 74. g5 fxg5 75. Qxg5+ Kd6
76.
Qg6+ Kc7 77. Qc6+ Kd8 78. f6 Ra1 79. g4 Rf1 80. g5 Rf5 81. Qa8+ Kc7
82. Qc6+
Kd8 83. g6 1-0

THe annotation says if 83...Rxf6 84.g7

But I still dont understand why this is a win. *Seems that Q against N
+2 pawns is not so easy.

Can you please explain how to win after 84...Rxc6 85.g8=Q+ Kc7 86.bxc6
Kxc6


It would be helpful if you could provide a FEN of the relevant
position after 84. g7 as my attempts to cut and paste the gamescore
don't match up with the game.

Looking in Chessbase, I think I found the game and FEN:

3k4/3n4/1pQ2rP1/pP6/8/4K3/8/8 w - - 0 84

Q against N plus 2 pawns is in the databases, so you can see the win
there - the Q and WK will operate in tandem to mate the black king and/
or force loss of material. The databases say the position after Kxc6
is a mate in 16; it would probably take most good players a bit
longer, but it is still within the realm of a simple win.

SBD

However, the best way to learn how the win will occur is to take both
sides and play against any competent computer program.

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Old March 1st 10, 04:09 AM posted to rec.games.chess.analysis
external usenet poster
 
First recorded activity by ChessBanter: Feb 2010
Posts: 1
Default alekhine endgame

On Feb 28, 7:20*am, sd wrote:
On Feb 20, 8:48*pm, latvian attack wrote:





Hi,


I am trying to analyze this endgame.
[Event "?"]
[Site "New York"]
[Date "1927.??.??"]
[Round "?"]
[White "Alekhine,Alexander"]
[Black "Nimzowitsch,Aaron"]
[Result "1-0"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "E32"]
[TimeControl "0"]


1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 5. Bg5 Nbd7 6. e3 b6 7. Bd3
Bb7 8. f3
Bxc3+ 9. Qxc3 c5 10. Nh3 h6 11. Bf4 Qe7 12. Bg3 e5 13. dxe5 dxe5 14. O-
O-O g6
15. Bc2 O-O-O 16. Ba4 Rhe8 17. Nf2 Qe6 18. Nd3 Re7 19. Rd2 Rde8 20.
Rhd1 Bc6
21. Bc2 Nh5 22. Nxc5 Nxc5 23. Rd6 Nxg3 24. hxg3 Qxd6 25. Rxd6 Rc7 26.
b4 Nb7
27. Rxc6 Rxc6 28. Ba4 Ree6 29. Bxc6 Rxc6 30. Qxe5 Rxc4+ 31. Kd2 h5 32.
a3 Rc7
33. Qe8+ Nd8 34. e4 Rd7+ 35. Ke3 Rc7 36. Kf4 Rc3 37. a4 Rc2 38. Qe7
Rc7 39.
Qf6 Rc2 40. Qe7 Rc7 41. Qd6 Ne6+ 42. Ke5 Nd8 43. Qd5 Rc6 44. Kf4 Ne6+
45. Ke3
Rc3+ 46. Ke2 Rc7 47. f4 Nd8 48. Ke3 Rc3+ 49. Kd4 Rc7 50. Ke5 a5 51.
Qa8+ Kd7
52. b5 Ke7 53. f5 f6+ 54. Kd4 Rd7+ 55. Ke3 gxf5 56. exf5 Nf7 57. Qf3
Ne5 58.
Qxh5 Rd3+ 59. Kf2 Rd2+ 60. Kf1 Rd4 61. Qh7+ Kd6 62. Qb7 Nd7 63. Qc6+
Ke7 64.
Qe6+ Kd8 65. Qb3 Rb4 66. Qd1 Ke7 67. Qe2+ Kd8 68. Qa2 Ke7 69. Ke2 Re4+
70.
Kf3 Rb4 71. Ke3 Nc5 72. Qg8 Nd7 73. g4 Rxa4 74. g5 fxg5 75. Qxg5+ Kd6
76.
Qg6+ Kc7 77. Qc6+ Kd8 78. f6 Ra1 79. g4 Rf1 80. g5 Rf5 81. Qa8+ Kc7
82. Qc6+
Kd8 83. g6 1-0


THe annotation says if 83...Rxf6 84.g7


But I still dont understand why this is a win. *Seems that Q against N
+2 pawns is not so easy.


Can you please explain how to win after 84...Rxc6 85.g8=Q+ Kc7 86.bxc6
Kxc6


It would be helpful if you could provide a FEN of the relevant
position after 84. g7 as my attempts to cut and paste the gamescore
don't match up with the game.

Looking in Chessbase, I think I found the game and FEN:

3k4/3n4/1pQ2rP1/pP6/8/4K3/8/8 w - - 0 84

Q against N plus 2 pawns is in the databases, so you can see the win
there - the Q and WK will operate in tandem to mate the black king and/
or force loss of material. The databases say the position after Kxc6
is a mate in 16; it would probably take most good players a bit
longer, but it is still within the realm of a simple win.

SBD

However, the best way to learn how the win will occur is to take both
sides and play against any competent computer program.- Hide quoted text -

- Show quoted text -


Thanks!
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