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Old June 28th 04, 04:07 AM
Matt Nemmers
 
Posts: n/a
Default Game from 2004 Interservice Chess Championships

Drew an expert for the first time last week at the Interservice Chess
Championships. Not a very pretty game, but one I'm proud of nonetheless. I
would like to hear some comments on it -- especially about the endgame. I
know 56.Kf2? is bad because it allows black to infiltrate my side of the
board for a perpetual, but if 56.Kf1 instead, does white have winning
chances with the extra pawn? All comments are welcome and appreciated.

Regards,

Matt

(35) Nemmers,Matthew R. (1627) - Roberts,Dwaine E. (2039) [A85]
2004 Interservice Chess Championships - Biloxi, MS (3.11), 21.06.2004

1.d4 e6 2.c4 f5 3.Nc3 Nf6 4.Bf4 c6 5.e3 Bb4 6.Bd3 Qa5 7.Nge2 0-0 8.0-0 Nh5
9.Bxb8 Rxb8 10.a3 Be7 11.b4 Qc7 12.Qc2 Bd6 13.f4 Be7 14.Rf3 d6 15.h3 g6
16.g4 Nf6 17.g5 Nh5 18.Ng3 Nxg3 19.Rxg3 e5 20.d5 Qb6 21.Kh2 e4 22.Be2 Bd7
23.h4 Be8 24.Rag1 Rf7 25.h5 Bf8 26.Rh3 Qc7 27.Rgg3 Bg7 28.Rh4 Rd7 29.Rgh3
cxd5 30.Nxd5 Qd8 31.Nf6+ Bxf6 32.gxf6 Qxf6 33.hxg6 hxg6 34.Rh6 Kf8 35.Rh8+
Ke7 36.c5 d5 37.Bb5 Rdd8 38.R8h7+ Bf7 39.c6 bxc6 40.Qc5+ Qd6 41.Qxa7+ Rd7
42.Rxf7+ Kxf7 43.Rh7+ Ke6 44.Rxd7 Qxd7 45.Qxb8 cxb5 46.Qg8+ Qf7 47.Qc8+ Qd7
48.Qg8+ Ke7 49.Qxg6 d4 50.Qg7+ Kd8 51.Qf8+ Kc7 52.Qc5+ Kb7 53.exd4 Ka6
54.Qe5 Qh7+ 55.Kg1 Qg8+ 56.Kf2? Qa2+ 57.Kg1 Qa1+ 58.Kf2 Qb2+ 59.Kf1 Qc1+
60.Ke2 Qc2+ 61.Ke1 Qc3+ 62.Ke2 1/2-1/2


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Old June 28th 04, 07:31 PM
Claus-Jürgen Heigl
 
Posts: n/a
Default Game from 2004 Interservice Chess Championships

Matt Nemmers wrote:

Drew an expert for the first time last week at the Interservice Chess
Championships. Not a very pretty game, but one I'm proud of nonetheless. I
would like to hear some comments on it -- especially about the endgame. I
know 56.Kf2? is bad because it allows black to infiltrate my side of the
board for a perpetual, but if 56.Kf1 instead, does white have winning
chances with the extra pawn? All comments are welcome and appreciated.

Regards,

Matt

(35) Nemmers,Matthew R. (1627) - Roberts,Dwaine E. (2039) [A85]
2004 Interservice Chess Championships - Biloxi, MS (3.11), 21.06.2004

1.d4 e6 2.c4 f5 3.Nc3 Nf6 4.Bf4 c6 5.e3 Bb4 6.Bd3 Qa5 7.Nge2 0-0 8.0-0 Nh5
9.Bxb8 Rxb8 10.a3


Instead you could have milked the bad bishop theme for all it is
worth: 10. c5 closes in the Bb4 which Black can only trade for the
knight which leaves him with the bad bishop Bc8. The white plan could
be to close the center (f4) and prepare a breakthrough on the
queenside (b5).

Be7 11.b4 Qc7 12.Qc2 Bd6 13.f4 Be7


Black wasted a lot of tempos instead of connecting his rooks (d6 and
Bd7).

14.Rf3


This is pretty slow. How to do it with speed: 14. g4! Nf6 (14...fxg4
15. Bxh7+ Kh8 16. Bg6 Nf6 17. e4 and the attack looks irresistible)
15. g5 (probably better than winning a pawn with 15. gxf5 because
Black then can free his game with 15...d5) 15...Ne8 16. c5 and White
clamps Black on both sides.

d6 15.h3


15. g4 Nf6 (15...fxg4 16. Bxh7+ Kh8 17. Rff1 Nf6 18. Bg6 and Black has
lots of weaknesses on the king side) 16. g5 Nd7 (16...Ne8 17. Nc1 and
the plan Rh3 and Qc2-f2-h4 is hard to defend) 17. c5 b6 18. Bc4 d5 19.
Bd3 and Black is pretty much reduced to passive mode.

g6 16.g4 Nf6


Black has prepared a better retreat and should use it. After 16...Ng7
the advanced white kingside pawns look weak. The idea is to attack the
center and white kingside with e5. 17. g5 doesn't win a tempo now, so
Black can rip apart the white position with 17...e5.

17.g5 Nh5 18.Ng3


As a black counterstrike in the center is imminent (e5) White should
secure the center. After 18. c5 dxc5 19. bxc5 the game shifts to the
queenside but Black's counterchances are greatly reduced. White should
then seek to install a knight on e5. The black Nh5 is pretty much out
of play.

Nxg3 19.Rxg3 e5 20.d5 Qb6


Apart from the tactical chance this move gives to White, I don't think
the queen is really better here. A good plan for Black would be Bd7,
Rfe8, exf4, Bf8 and Bg7, then attack the white pawns trough the
e-file. As White is missing his dark-squared bishop the Black bishop
is quite strong on the long diagonal.

21.Kh2


White could take advantage of the queen move by 21. fxe5 dxe5 22. c5
Qd8 23. Bc4 Kh8 24. Rd1 Bd7 25. h4 (threat d6) 25...cxd5 26. Nxd5
(threat Qc3) 26...Qe8 (only move) 27. Qc3 Bd8 28. Nf4 (threat Be6)
28...Bc7 29. h5 (threat 29. hxg6 hxg6 30. Rh3+ Kg7 31. Rxd7 Qxd7 32.
Ne6+) 29...Ba4 (29...gxh5 30. g6 White wins) 30. Rd2 with a winning
attack.

Another note: as White has the plan to double the rooks on the h-file,
Kg2 saves a lot of time. Kg2, Rh3 and Rah1 is three moves, Kh2,
Rg3-h3-h4 and Ra1-g1-g3-h3 is six moves. King security on h2 or g2 is
no difference at all.

e4


In my opinion Black should keep the option to open the e-file. 21...c5
avoids a white breaktrough through the center. If White releases the
tension, Black strikes first: 22. Na4 Qc7 23. fxe5 dxe5 24. bxc5 (24.
Nxc5? e4 and Bd6) 24...f4 25. exf4 exf4 26. Rgg1 (26. Rf3 Bxg5)
26...Qd7 27. Bf1 Rf5 28. h4 Re5 with plans like Re3 and Qc7-e5 or
Bxc5. Black has a superior game.

22.Be2


An alternative is Bf1 with the plan Qc2-f2-h4 in mind (after
h3-h4-h5).

Bd7
23.h4


Tactical chance missed: 23. c5! dxc5 (23...Qd8 24. Bc4 Be8 (24...cxd5
25. Bxd5+ Kg7 (25...Kf7 26. Rd1 is also bad) 26. cxd6 wins a piece
26...Bxd6? 27. Qb2; 23...Qc7 24. Bc4 Kh8 (24...Be8 25. dxc6+ Bf7 26.
Nd5 +-) 25. Qb2 +-) 25. dxc6+ Bf7 26. Nb5 bxc6 27. Nxa7 Qc7 28. cxd6
Bxd6 29. Nxc6 and the Black queenside is gone) 24. d6 Bxd6 25. Bc4+
Rf7 26. Qd2 Qc7 27. Rd1 axb4 28. Qxd6 Qxd6 29. Rxd6 Be8 30. axb4 with
a winning advantage.

Be8 24.Rag1 Rf7


Black conducts a complicated and unneccesary defense. More simple was
24...Bf7 with the plan 25...cxd5 26. Nxd5 (26. cxd5 Rfcx8 27. Qd2 Bf8
and Bg7) 26...Bxd5 27. cxd5 Rfc8 and Qc7. The white attack is not fast
enough.

25.h5 Bf8 26.Rh3 Qc7 27.Rgg3


Again, 27. Kg2 and Rah1 is faster.

Bg7 28.Rh4 Rd7 29.Rgh3
cxd5?


Opens the square for the knight. Black should defend with 29...Kf8.

30.Nxd5 Qd8 31.Nf6+


The knight is much too important an attacking piece to throw it away.
The attack should go along this way: 31. hxg6 hxg6 (31...Bxg6 32. Bh5
Rc8 33. Bxg6 hxg6 34. Qa2 Rf7 35. Rh7 and there is no defense against
36. c5 dxc6 37. Ne7+ Qxe7 38. Rxg7+ Kxg7 39. Qb2+) 32. Qd2 Bf7 33. Rh7
(threat 34. Rxg7+ Kxg7 35. Qd4+ Kf8 36. Rh8+ Bg8 37. Nf6) 34...Be6 35.
Bd1 (threat 36. Ba4 Rf7 37. Rxg7+ Rxg7 38. Nf6+ Kf7 39. Ne8 +-
(39...Rg8 40. Rh7+ Kf8 41. Bd7!! Bxd7 42. Qxd6+ Ke8 43. Qd5 +-))
35...b5 36. cxb5 Kf8 37. Bb3 Bg8 38. Rh8 (threat 39. Rxg8+ Kxg8 40.
Ne7+ Kf8 41. Qd5 Qe8 42. Qe6 and 43.Nxg6+ wins the queen) Bxh8 39.
Rxh8 (threat Nf6) 39...Rh7+ 40. Rxh7 Bxh7 41. Qd4 Bg8 42. Qh8 Qd7 43.
Nf6 Qg7 44. Nd7+ Qxd7 45. Qxg8+ Ke7 46. Qxb8 and wins. That knight
really was crucial!

Bxf6 32.gxf6 Qxf6 33.hxg6 hxg6


Perhaps Bxg6 was better. Now the h-file is finally open.

34.Rh6 Kf8 35.Rh8+
Ke7 36.c5 d5 37.Bb5 Rdd8 38.R8h7+


38. Bxe8 Rxe8 39. R3h7+ Ke6 40. Qa4 Qd8 (40...Rxh8 41. Qd7 mate) 41.
Rxe8 Qxe8 42. b5 (threat Qd4) 42...Qd8 (42...Qg8 43. Rxb7 Rxb7 44.
Qa6+) 43. Qxa7 d4 44. c6 (threat 45. Qc5 Qd6 46. Qc4+ Qd5 47. Re7+)
44...Qg8 45. Rxb7 and wins. This was the last chance to win.

Bf7 39.c6 bxc6 40.Qc5+ Qd6 41.Qxa7+ Rd7
42.Rxf7+ Kxf7 43.Rh7+ Ke6 44.Rxd7 Qxd7 45.Qxb8 cxb5 46.Qg8+ Qf7 47.Qc8+ Qd7
48.Qg8+ Ke7 49.Qxg6 d4 50.Qg7+ Kd8 51.Qf8+ Kc7 52.Qc5+ Kb7 53.exd4 Ka6
54.Qe5


54. Kg2 Qg7+ 55. Kf2 Qh7 also ends in a perpetual.

Qh7+ 55.Kg1 Qg8+ 56.Kf2?


This is not a mistake. There was no way to run from the perpetual. If
56. Kf1 then Qc4+.

Qa2+ 57.Kg1 Qa1+ 58.Kf2 Qb2+ 59.Kf1 Qc1+
60.Ke2 Qc2+ 61.Ke1 Qc3+ 62.Ke2 1/2-1/2


Claus-Juergen
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Old June 30th 04, 02:03 AM
Matt Nemmers
 
Posts: n/a
Default Game from 2004 Interservice Chess Championships

Thanks for the helpful comments, Claus. Much appreciated!

Regards,

Matt

"Claus-Jürgen Heigl" wrote in message
...
Matt Nemmers wrote:

Drew an expert for the first time last week at the Interservice Chess
Championships. Not a very pretty game, but one I'm proud of

nonetheless. I
would like to hear some comments on it -- especially about the endgame.

I
know 56.Kf2? is bad because it allows black to infiltrate my side of the
board for a perpetual, but if 56.Kf1 instead, does white have winning
chances with the extra pawn? All comments are welcome and appreciated.

Regards,

Matt

(35) Nemmers,Matthew R. (1627) - Roberts,Dwaine E. (2039) [A85]
2004 Interservice Chess Championships - Biloxi, MS (3.11), 21.06.2004

1.d4 e6 2.c4 f5 3.Nc3 Nf6 4.Bf4 c6 5.e3 Bb4 6.Bd3 Qa5 7.Nge2 0-0 8.0-0

Nh5
9.Bxb8 Rxb8 10.a3


Instead you could have milked the bad bishop theme for all it is
worth: 10. c5 closes in the Bb4 which Black can only trade for the
knight which leaves him with the bad bishop Bc8. The white plan could
be to close the center (f4) and prepare a breakthrough on the
queenside (b5).

Be7 11.b4 Qc7 12.Qc2 Bd6 13.f4 Be7


Black wasted a lot of tempos instead of connecting his rooks (d6 and
Bd7).

14.Rf3


This is pretty slow. How to do it with speed: 14. g4! Nf6 (14...fxg4
15. Bxh7+ Kh8 16. Bg6 Nf6 17. e4 and the attack looks irresistible)
15. g5 (probably better than winning a pawn with 15. gxf5 because
Black then can free his game with 15...d5) 15...Ne8 16. c5 and White
clamps Black on both sides.

d6 15.h3


15. g4 Nf6 (15...fxg4 16. Bxh7+ Kh8 17. Rff1 Nf6 18. Bg6 and Black has
lots of weaknesses on the king side) 16. g5 Nd7 (16...Ne8 17. Nc1 and
the plan Rh3 and Qc2-f2-h4 is hard to defend) 17. c5 b6 18. Bc4 d5 19.
Bd3 and Black is pretty much reduced to passive mode.

g6 16.g4 Nf6


Black has prepared a better retreat and should use it. After 16...Ng7
the advanced white kingside pawns look weak. The idea is to attack the
center and white kingside with e5. 17. g5 doesn't win a tempo now, so
Black can rip apart the white position with 17...e5.

17.g5 Nh5 18.Ng3


As a black counterstrike in the center is imminent (e5) White should
secure the center. After 18. c5 dxc5 19. bxc5 the game shifts to the
queenside but Black's counterchances are greatly reduced. White should
then seek to install a knight on e5. The black Nh5 is pretty much out
of play.

Nxg3 19.Rxg3 e5 20.d5 Qb6


Apart from the tactical chance this move gives to White, I don't think
the queen is really better here. A good plan for Black would be Bd7,
Rfe8, exf4, Bf8 and Bg7, then attack the white pawns trough the
e-file. As White is missing his dark-squared bishop the Black bishop
is quite strong on the long diagonal.

21.Kh2


White could take advantage of the queen move by 21. fxe5 dxe5 22. c5
Qd8 23. Bc4 Kh8 24. Rd1 Bd7 25. h4 (threat d6) 25...cxd5 26. Nxd5
(threat Qc3) 26...Qe8 (only move) 27. Qc3 Bd8 28. Nf4 (threat Be6)
28...Bc7 29. h5 (threat 29. hxg6 hxg6 30. Rh3+ Kg7 31. Rxd7 Qxd7 32.
Ne6+) 29...Ba4 (29...gxh5 30. g6 White wins) 30. Rd2 with a winning
attack.

Another note: as White has the plan to double the rooks on the h-file,
Kg2 saves a lot of time. Kg2, Rh3 and Rah1 is three moves, Kh2,
Rg3-h3-h4 and Ra1-g1-g3-h3 is six moves. King security on h2 or g2 is
no difference at all.

e4


In my opinion Black should keep the option to open the e-file. 21...c5
avoids a white breaktrough through the center. If White releases the
tension, Black strikes first: 22. Na4 Qc7 23. fxe5 dxe5 24. bxc5 (24.
Nxc5? e4 and Bd6) 24...f4 25. exf4 exf4 26. Rgg1 (26. Rf3 Bxg5)
26...Qd7 27. Bf1 Rf5 28. h4 Re5 with plans like Re3 and Qc7-e5 or
Bxc5. Black has a superior game.

22.Be2


An alternative is Bf1 with the plan Qc2-f2-h4 in mind (after
h3-h4-h5).

Bd7
23.h4


Tactical chance missed: 23. c5! dxc5 (23...Qd8 24. Bc4 Be8 (24...cxd5
25. Bxd5+ Kg7 (25...Kf7 26. Rd1 is also bad) 26. cxd6 wins a piece
26...Bxd6? 27. Qb2; 23...Qc7 24. Bc4 Kh8 (24...Be8 25. dxc6+ Bf7 26.
Nd5 +-) 25. Qb2 +-) 25. dxc6+ Bf7 26. Nb5 bxc6 27. Nxa7 Qc7 28. cxd6
Bxd6 29. Nxc6 and the Black queenside is gone) 24. d6 Bxd6 25. Bc4+
Rf7 26. Qd2 Qc7 27. Rd1 axb4 28. Qxd6 Qxd6 29. Rxd6 Be8 30. axb4 with
a winning advantage.

Be8 24.Rag1 Rf7


Black conducts a complicated and unneccesary defense. More simple was
24...Bf7 with the plan 25...cxd5 26. Nxd5 (26. cxd5 Rfcx8 27. Qd2 Bf8
and Bg7) 26...Bxd5 27. cxd5 Rfc8 and Qc7. The white attack is not fast
enough.

25.h5 Bf8 26.Rh3 Qc7 27.Rgg3


Again, 27. Kg2 and Rah1 is faster.

Bg7 28.Rh4 Rd7 29.Rgh3
cxd5?


Opens the square for the knight. Black should defend with 29...Kf8.

30.Nxd5 Qd8 31.Nf6+


The knight is much too important an attacking piece to throw it away.
The attack should go along this way: 31. hxg6 hxg6 (31...Bxg6 32. Bh5
Rc8 33. Bxg6 hxg6 34. Qa2 Rf7 35. Rh7 and there is no defense against
36. c5 dxc6 37. Ne7+ Qxe7 38. Rxg7+ Kxg7 39. Qb2+) 32. Qd2 Bf7 33. Rh7
(threat 34. Rxg7+ Kxg7 35. Qd4+ Kf8 36. Rh8+ Bg8 37. Nf6) 34...Be6 35.
Bd1 (threat 36. Ba4 Rf7 37. Rxg7+ Rxg7 38. Nf6+ Kf7 39. Ne8 +-
(39...Rg8 40. Rh7+ Kf8 41. Bd7!! Bxd7 42. Qxd6+ Ke8 43. Qd5 +-))
35...b5 36. cxb5 Kf8 37. Bb3 Bg8 38. Rh8 (threat 39. Rxg8+ Kxg8 40.
Ne7+ Kf8 41. Qd5 Qe8 42. Qe6 and 43.Nxg6+ wins the queen) Bxh8 39.
Rxh8 (threat Nf6) 39...Rh7+ 40. Rxh7 Bxh7 41. Qd4 Bg8 42. Qh8 Qd7 43.
Nf6 Qg7 44. Nd7+ Qxd7 45. Qxg8+ Ke7 46. Qxb8 and wins. That knight
really was crucial!

Bxf6 32.gxf6 Qxf6 33.hxg6 hxg6


Perhaps Bxg6 was better. Now the h-file is finally open.

34.Rh6 Kf8 35.Rh8+
Ke7 36.c5 d5 37.Bb5 Rdd8 38.R8h7+


38. Bxe8 Rxe8 39. R3h7+ Ke6 40. Qa4 Qd8 (40...Rxh8 41. Qd7 mate) 41.
Rxe8 Qxe8 42. b5 (threat Qd4) 42...Qd8 (42...Qg8 43. Rxb7 Rxb7 44.
Qa6+) 43. Qxa7 d4 44. c6 (threat 45. Qc5 Qd6 46. Qc4+ Qd5 47. Re7+)
44...Qg8 45. Rxb7 and wins. This was the last chance to win.

Bf7 39.c6 bxc6 40.Qc5+ Qd6 41.Qxa7+ Rd7
42.Rxf7+ Kxf7 43.Rh7+ Ke6 44.Rxd7 Qxd7 45.Qxb8 cxb5 46.Qg8+ Qf7 47.Qc8+

Qd7
48.Qg8+ Ke7 49.Qxg6 d4 50.Qg7+ Kd8 51.Qf8+ Kc7 52.Qc5+ Kb7 53.exd4 Ka6
54.Qe5


54. Kg2 Qg7+ 55. Kf2 Qh7 also ends in a perpetual.

Qh7+ 55.Kg1 Qg8+ 56.Kf2?


This is not a mistake. There was no way to run from the perpetual. If
56. Kf1 then Qc4+.

Qa2+ 57.Kg1 Qa1+ 58.Kf2 Qb2+ 59.Kf1 Qc1+
60.Ke2 Qc2+ 61.Ke1 Qc3+ 62.Ke2 1/2-1/2


Claus-Juergen



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