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please analyze 2



 
 
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  #1  
Old July 26th 03, 02:12 AM
Hans Meier
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Posts: n/a
Default please analyze 2

Here is a tournament game (1h 45m/40moves + 30m) I played today against a
player with 1750 rating. It's a draw.
please do some analysis. any mistakes of Black player (which I was)?

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3
e6 7. Nc3 Bb4 8. Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 b6
12. O-O Bb7 13. Bg5 Ne8 14. c4 Qd7 15. Rad1 h6 16. Bc1 Nf6 17. Rfe1
Rfe8 18. Bb2 Rad8 19. Bb1 Qc7 20. a3 Na5 21. Ne5 Nd7 22. Nxd7
Rxd7 23. Qc2 Nxc4 24. Qh7+ Kf8 25. Bc1 f5 26. Qg6 Qc6 27. f3
Rde7 28. Bf4 Qd5 29. Be5 Nxe5 30. dxe5 Qc5+ 31. Kh1 Bc8 32. Rd6
Qf2 33. Red1 Bd7 34. h3 Ba4 35. Rc1 Qb2 36. Re1 Qxa3 37. Qg3
Qc3 38. Bd3 Rd7 39. Bf1 Qc5 40. Rxd7 Bxd7 41. Rd1 Bb5 42. Re1
Bxf1 43. Rxf1 a5 44. Rd1 Qb5 45. f4 a4 46. Rd6 Kg8 47. Qf2 Qb1+
48. Kh2 a3 49. Rd7 Rf8 50. Ra7 Qb4 51. Qf3 g5 52. fxg5 hxg5
53. Qc6 Qf4+ 54. Kg1 Qxe5 -- draw


  #2  
Old July 26th 03, 03:47 AM
Bob Durrett
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Posts: n/a
Default please analyze 2


"Hans Meier" wrote in message
...
Here is a tournament game (1h 45m/40moves + 30m) I played today against a
player with 1750 rating. It's a draw.
please do some analysis. any mistakes of Black player (which I was)?

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3
e6 7. Nc3 Bb4 8. Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 b6
12. O-O Bb7 13. Bg5 Ne8 14. c4 Qd7 15. Rad1 h6 16. Bc1 Nf6 17. Rfe1
Rfe8 18. Bb2 Rad8 19. Bb1 Qc7 20. a3 Na5 21. Ne5 Nd7 22. Nxd7
Rxd7 23. Qc2 Nxc4 24. Qh7+ Kf8 25. Bc1 f5 26. Qg6 Qc6 27. f3
Rde7 28. Bf4 Qd5 29. Be5 Nxe5 30. dxe5 Qc5+ 31. Kh1 Bc8 32. Rd6
Qf2 33. Red1 Bd7 34. h3 Ba4 35. Rc1 Qb2 36. Re1 Qxa3 37. Qg3
Qc3 38. Bd3 Rd7 39. Bf1 Qc5 40. Rxd7 Bxd7 41. Rd1 Bb5 42. Re1
Bxf1 43. Rxf1 a5 44. Rd1 Qb5 45. f4 a4 46. Rd6 Kg8 47. Qf2 Qb1+
48. Kh2 a3 49. Rd7 Rf8 50. Ra7 Qb4 51. Qf3 g5 52. fxg5 hxg5
53. Qc6 Qf4+ 54. Kg1 Qxe5 -- draw



54...Qxe5??

More later.

Bob D.


  #3  
Old July 26th 03, 12:47 PM
Fernando
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Posts: n/a
Default please analyze 2


"Bob Durrett" schreef in bericht
...

"Hans Meier" wrote in message
...
Here is a tournament game (1h 45m/40moves + 30m) I played today against

a
player with 1750 rating. It's a draw.
please do some analysis. any mistakes of Black player (which I was)?

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3
e6 7. Nc3 Bb4 8. Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 b6
12. O-O Bb7 13. Bg5 Ne8 14. c4 Qd7 15. Rad1 h6 16. Bc1 Nf6 17. Rfe1
Rfe8 18. Bb2 Rad8 19. Bb1 Qc7 20. a3 Na5 21. Ne5 Nd7 22. Nxd7
Rxd7 23. Qc2 Nxc4 24. Qh7+ Kf8 25. Bc1 f5 26. Qg6 Qc6 27. f3
Rde7 28. Bf4 Qd5 29. Be5 Nxe5 30. dxe5 Qc5+ 31. Kh1 Bc8 32. Rd6
Qf2 33. Red1 Bd7 34. h3 Ba4 35. Rc1 Qb2 36. Re1 Qxa3 37. Qg3
Qc3 38. Bd3 Rd7 39. Bf1 Qc5 40. Rxd7 Bxd7 41. Rd1 Bb5 42. Re1
Bxf1 43. Rxf1 a5 44. Rd1 Qb5 45. f4 a4 46. Rd6 Kg8 47. Qf2 Qb1+
48. Kh2 a3 49. Rd7 Rf8 50. Ra7 Qb4 51. Qf3 g5 52. fxg5 hxg5
53. Qc6 Qf4+ 54. Kg1 Qxe5 -- draw



54...Qxe5??

More later.

Bob D.


Fritz indeed gives a better point rating to Qe3, but can black ever promote
except forcing a continues check to keep his own two pawns up (as Fritz
notes and values exactly +2.00 for black without positional advantage or
future hope)

Either way, it's a draw.

Best regards,
Fernando



  #4  
Old July 26th 03, 02:09 PM
Fernando
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Posts: n/a
Default please analyze 2


"Hans Meier" schreef in bericht
...
Here is a tournament game (1h 45m/40moves + 30m) I played today against a
player with 1750 rating. It's a draw.
please do some analysis. any mistakes of Black player (which I was)?





[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "Hans Meier"]
[Result "*"]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3 e6 7. Nc3 Bb4
8.
Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 b6

{11... b6 is premature and a waist of your tempo, you've got other pieces to
develope too.}

12. O-O Bb7

{12... h6 stopping Bg5}

13. Bg5 Ne8

{Ne8 gets you nowere, BxN is not as advantuage as it seems. Rac8, let white
be concerned about getting on the King's side while you are ready on the
Queen's side.}

14. c4 Qd7 15. Rad1 h6 16. Bc1 Nf6

{Nxd4?? Nxd4 Qxd4 Bh7+!! loosing the Queen}

17. Rfe1 Rfe8 18. Bb2 Rad8 19. Bb1 Qc7 20. a3 Na5 21. Ne5 Nd7 22. Nxd7 Rxd7
23.
Qc2 Nxc4 24. Qh7+ Kf8 25. Bc1 f5

{very poor move, Bxf5 exf5?? mate in 3.}

26.Qg6 Qc6

{Not the best move, but then again, white wasn't interrested in Bxf5 anyway}

27.f3 Rde7 28. Bf4 Qd5

{better move is: 28... e5!! 29.Qxf5+ Rf7; 29.Qxc6 leading to g5 .. f4 etc}

29.Be5 Nxe5 30. dxe5 Qc5+ 31. Kh1 Bc8

{31... Qxa3 is a happy move}

32. Rd6 Qf2

{32... Qf2??? and white says thank you for the tempo. 32... Rd7 would have
been more appropriate.}

33. Red1 Bd7 34. h3 Ba4 35. Rc1 Qb2

{35... Qe3}

36. Re1 Qxa3 37. Qg3 Qc3

{Depending you motive, Rc7 or Rc8 would have been better. Rd7 is also good}

38.Bd3 Rd7 39. Bf1 Qc5 40. Rxd7 Bxd7 41. Rd1 Bb5 42. Re1 Bxf1 43. Rxf1 a5
44. Rd1
Qb5 45. f4 a4 46. Rd6 Kg8 47. Qf2 Qb1+ 48. Kh2 a3 49. Rd7 Rf8 50. Ra7 Qb4
51.
Qf3 g5 52. fxg5 hxg5 53. Qc6 Qf4+ 54. Kg1 Qxe5

{Draw} *




I noticed that you are a semi agressive player (attacking), while your
opponent is quite defensive, reluctant to exchange even when it's better.

This is what has saved you a loss, and gained you a draw.

Try planning a couple of moves more ahead. When you had the advantage in the
middle game, you didn't actualy try to make the best out of it, but just
seem to play the best move you could think of, which isn't always the best
move.


Best regards,
Fernando




  #5  
Old July 26th 03, 04:57 PM
Hans Meier
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Posts: n/a
Default please analyze 2


1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3 e6 7. Nc3 Bb4
8.
Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 b6

{11... b6 is premature and a waist of your tempo, you've got other pieces

to
develope too.}


developing the bishop.


12. O-O Bb7

{12... h6 stopping Bg5}


didn't see this.


13. Bg5 Ne8

{Ne8 gets you nowere, BxN is not as advantuage as it seems. Rac8, let

white
be concerned about getting on the King's side while you are ready on the
Queen's side.}


BxN makes it much harder to defend.


14. c4 Qd7 15. Rad1 h6 16. Bc1 Nf6

{Nxd4?? Nxd4 Qxd4 Bh7+!! loosing the Queen}


that's why I didn't play Nxd4.


17. Rfe1 Rfe8 18. Bb2 Rad8 19. Bb1 Qc7 20. a3 Na5 21. Ne5 Nd7 22. Nxd7

Rxd7
23.
Qc2 Nxc4 24. Qh7+ Kf8 25. Bc1 f5

{very poor move, Bxf5 exf5?? mate in 3.}


I thought of Bxf5, but I thought it wouldn't be an advantage for white.
But it is an advantage because of the weak protection of Re8.


26.Qg6 Qc6

{Not the best move, but then again, white wasn't interrested in Bxf5

anyway}

27.f3 Rde7 28. Bf4 Qd5

{better move is: 28... e5!! 29.Qxf5+ Rf7; 29.Qxc6 leading to g5 .. f4

etc}

Too risky. It's a move which a 1600-1700 rated player usually doesn't find.
It's sets trap for white, because 29. Qxf5 looses bishop.


29.Be5 Nxe5 30. dxe5 Qc5+ 31. Kh1 Bc8

{31... Qxa3 is a happy move}

32. Rd6 Qf2

{32... Qf2??? and white says thank you for the tempo. 32... Rd7 would have
been more appropriate.}


32. ... Rd7 33. Rxe6
I think Qxa3 is best here.


33. Red1 Bd7 34. h3 Ba4 35. Rc1 Qb2

{35... Qe3}

36. Re1 Qxa3 37. Qg3 Qc3

{Depending you motive, Rc7 or Rc8 would have been better. Rd7 is also

good}

38.Bd3 Rd7 39. Bf1 Qc5 40. Rxd7 Bxd7 41. Rd1 Bb5 42. Re1 Bxf1 43. Rxf1 a5
44. Rd1
Qb5 45. f4 a4 46. Rd6 Kg8 47. Qf2 Qb1+ 48. Kh2 a3 49. Rd7 Rf8 50. Ra7 Qb4
51.
Qf3 g5 52. fxg5 hxg5 53. Qc6 Qf4+ 54. Kg1 Qxe5



  #6  
Old July 26th 03, 05:08 PM
Hans Meier
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Posts: n/a
Default please analyze 2

It don't think it's draw before Qxe5.

Sco -1.66 Positions: 165903K Depth: 14
Best Line: 54. ... Qd4+ 55. Kf1 Qa1+ 56. Kf2 Qa2+ 57. Kg1 Qd5 58. Qc7 Qc5+
59. Qxc5 bxc5 60. Rxa3 f4 61. Kf2 Rf5 62. Ra8+ Kf7 63. Ra7+ Kg6


"Hans Meier" wrote in message
...
Here is a tournament game (1h 45m/40moves + 30m) I played today

against
a
player with 1750 rating. It's a draw.
please do some analysis. any mistakes of Black player (which I was)?

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3
e6 7. Nc3 Bb4 8. Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 b6
12. O-O Bb7 13. Bg5 Ne8 14. c4 Qd7 15. Rad1 h6 16. Bc1 Nf6 17. Rfe1
Rfe8 18. Bb2 Rad8 19. Bb1 Qc7 20. a3 Na5 21. Ne5 Nd7 22. Nxd7
Rxd7 23. Qc2 Nxc4 24. Qh7+ Kf8 25. Bc1 f5 26. Qg6 Qc6 27. f3
Rde7 28. Bf4 Qd5 29. Be5 Nxe5 30. dxe5 Qc5+ 31. Kh1 Bc8 32. Rd6
Qf2 33. Red1 Bd7 34. h3 Ba4 35. Rc1 Qb2 36. Re1 Qxa3 37. Qg3
Qc3 38. Bd3 Rd7 39. Bf1 Qc5 40. Rxd7 Bxd7 41. Rd1 Bb5 42. Re1
Bxf1 43. Rxf1 a5 44. Rd1 Qb5 45. f4 a4 46. Rd6 Kg8 47. Qf2 Qb1+
48. Kh2 a3 49. Rd7 Rf8 50. Ra7 Qb4 51. Qf3 g5 52. fxg5 hxg5
53. Qc6 Qf4+ 54. Kg1 Qxe5 -- draw



54...Qxe5??

More later.

Bob D.


Fritz indeed gives a better point rating to Qe3, but can black ever

promote
except forcing a continues check to keep his own two pawns up (as Fritz
notes and values exactly +2.00 for black without positional advantage or
future hope)

Either way, it's a draw.

Best regards,
Fernando





  #7  
Old July 26th 03, 09:39 PM
Bob Durrett
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Posts: n/a
Default please analyze 2


"Hans Meier" wrote in message
...
snip

For your convenience, I ran your game using "full analysis" mode overnight
on my Shredder 7.04 chess engine. My computer's Pentium IV processor runs
at 1 GHz clock rate. It took 14 hours. On a faster machine it would have
been done much sooner. For example, on a 3 GHz machine, it would have taken
14/3 hours.

This sort of thing is something you could do yourself. Any chess engine
would do just fine. There are free chess engines available on the internet
if you are strapped for money. I choose Shredder because it is currently at
the top of the SSDF rating list. The use of Chessbase Lite is also very
convenient and is also free. You could copy the game to a chess engine or
to Chessbase Lite and look at the annotations there on your computer.

All the annotations shown were provided by Shredder 7.04.

A quick scan of the data shows that Shredder put question marks after your
23rd, 25th, 31st, and 54th moves. You should fully study the positions
after White's 23rd, 25th, 31st, and 54th moves first before devoting any
time to the other moves.

Notice also that Shredder found improvements for your side for moves 11, 13,
14, 17, 21, 28, 32, 33, 35, 39, 41, 42, 43, 44, 45, 46, 48, 49, 50, and 51.
After you have finished studying the four positions with question marks, you
should look at these twenty positions which occurred immediately prior to
your move.

Notice that Shredder had no input as to the status of the clock at different
moves. Hence, time trouble considerations are not considered by Shredder.
For example, if you were in severe time trouble at the end of the game, your
last move as played would have made a lot of sense as an attempt to obtain a
perpetual check draw.

If you play at the Internet Chess Club, you can use the smoves command to
get a printout of the times used for each of your moves. Analysis of these
times is useful to determine whether or not you do a good job of time
management.

Looking at the remaining moves of the game should not be done until the
above is done.

Here's what you should do:

(a) First, write down your reasons for your moves. Pay extra attention to
your question mark moves. Also be sure you write something down for the
other twenty moves listed above.

(b) Second, reexamine the positions in which you made your error and see if
you can find a better move now that you are no longer harrassed by the
ticking clock.

(c) Third, look at the remaining twenty moves listed above and try to
understand why the moves suggested by Shredder might have been improvements.

(d) Finally, go back over the entire game to wrap it up. Since this was an
amateur game, there are likely several "turning points" in the game. Try to
identify them to get the big picture.

After you're done, write it all up and post your observations here on this
bulletin board. You will discover that you will get plenty of response!
Most people will not comment on an unannotated score sheet.

PGN CODES: (partial list)
$2 ?
$4 ??
$5 !?
$6 ?!
$11 =
$14 +/=
$15 =/+
$16 +/-
$17 -/+
$18 +-
$19 -+
$142 better is (as a prefix)
$146 Novelty
{ } brackets inclose commentary
[ ] brackets inclose analysis line
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

[Event "T-Online"]
[Site "?"]
[Date "2003.07.25"]
[Round "?"]
[White "opponent [1750]"]
[Black "Hans Meier"]
[Result "1/2-1/2"]
[ECO "B22"]
[Annotator "Shredder 7.04 (240s)"]
[PlyCount "108"]
[EventDate "2003.07.22"]

{B22: Sicilian: 2 c3 } 1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5
6. Nf3 e6 7. Nc3 Bb4 8. Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 $146

(11. O-O Re8 (11... e5 12. c4 Qd6 13. dxe5 Qxd3 14. exf6 Bg4 15. Qb3 Qxb3
16. axb3 Bxf3 17. gxf3 Nd4 18. Be3 Nxb3 19. Ra3 Rfc8 20. Rxb3 Rxc4 21. Rxb7
a5 22. Rc1 Rxc1+ 23. Bxc1 gxf6 24. Bb2 Ra6 25. Kg2 Kg7 26. Kg3 {Balada
Moreno,J-Garcia Martinez,C/Valencia 1998/EXT 2000/1-0 (32)}) 12. Bg5 Qd8 13.
Qc2 h6 14. Be3 e5 15. Bb5 exd4 16. Nxd4 Nxd4 17. Bxd4 Bd7 18. Bxd7 Nxd7 19.
Be3 Qh4 20. Rad1 Nf6 21. Rd4 Qh5 22. h3 Nd5 23. Bd2 Rac8 24. Qb3 Nb6 25. Be3
Qa5 {Kirsch,J-Contois,F/Paris 2001/EXT 2002/0-1 (70)})

11... b6

(11... Re8 12. Bg5 Qa5 13. O-O Qxc3 14. Bxf6 gxf6 15. Qe3 $16)

12. O-O Bb7 13. Bg5 Ne8

(13...Rac8 14. Rfe1 $16)

14. c4 Qd7

(14... Qd6 15. Rad1 h6 16. Bh4 $18)

15. Rad1 h6 16. Bc1

(16. Bh4 $5 $16)

16... Nf6 17. Rfe1 Rfe8

(17... Qd6 18. Bb2 $16)

18. Bb2

(18. Ne5 Nxe5 19. Qxe5 Qd8 $16)

18... Rad8 {d4 becomes the focus of attention}

19. Bb1 Qc7 20. a3 {Controls b4}

20...Na5 21. Ne5 Nd7

(21... Rc8 $5 22. Ba2 Ba6 $16)

22. Nxd7 Rxd7 23. Qc2 Nxc4 $2

(23... g6 24. Ba2 b5 25. c5 $16)

24. Qh7+ $4 {releasing the pressure on the opponent}

(24. Rc1 Bd5 25. Qh7+ Kf8 $18)

24... Kf8 25. Bc1

(25. Bc3 $142 Ke7 26. Bd3 $18)

25... f5 $4 {strolling merrily down the path to disaster}

(25... Qd8 26. Rd3 Qf6 27. Rg3 Rxd4 28. Rxg7 $11)

26. Qg6

(26. Bxf5 $142 {and White wins}

26... Bd5 27. Bg6 $18)

26... Qc6 $14 27. f3

(27. Bxf5 Qxg2+ 28. Qxg2 Bxg2 $14)

27... Rde7 28. Bf4

(28. Ba2 b5 29. Qh7 $16)

28... Qd5

(28... e5 29. Qxf5+ Rf7 $11)

29. Be5 $4 {weakening the position}

(29. Ba2 $142 b5 30. Qh7 $16)

29... Nxe5 $17 30. dxe5 $2

(30. Rxe5 $142 $5 Qb3 31. Rde1 $17)

30... Qc5+ $19 31. Kh1 Bc8 $4 {allows the opponent back into the game}

(31... Qxa3 32. Bd3 a6 33. Qh7 $19)

32. Rd6 $2 {A classical outpost}

(32. Rc1 $5 {looks like a viable alternative} 32... Qf2 33. Bd3 $15)

32... Qf2

(32... Qxa3 33. Qh7 $19)

33. Red1

(33. Rdd1 Rd7 34. Rc1 Red8 $17)

33... Bd7

(33... Rd7 34. Qg3 Qxg3 35. hxg3 $19)

34. h3
(34. Bd3 $5 $17)

34... Ba4 $19 35. Rc1 $2

(35. R1d4 Bb3 36. Kh2 $19)

35... Qb2

( 35... Qe3 {and Black can already relax} 36. Rg1 $19)

36. Re1 Qxa3 37. Qg3 Qc3 38. Bd3

(38. Qf2 Rd7 39. Ba2 Rxd6 40. exd6 Qd3 $19)

38... Rd7 39. Bf1 Qc5

(39... Rxd6 {might be the shorter path} 40. exd6 a5 41. Qh4 $19)

40. Rxd7

(40. Qf4 Rxd6 41. exd6 Bd7 $19)

40... Bxd7 41. Rd1

(41. Qf4 a5 $19)

41... Bb5

(41... Ba4 {seems even better} 42. Ra1 Rd8 43. Qe1 $19)

42. Re1

(42. Bxb5 Qxb5 43. f4 $19)

42... Bxf1 43. Rxf1 a5

(43... Rd8 {and Black can already relax} 44. Rb1 $19)

44. Rd1 Qb5

(44... Qe3 $5 {keeps an even firmer grip} 45. Re1 Qd4 46. Rc1 $19)

45. f4 a4

(45... Kg8 {makes it even easier for Black} 46. Kh2 $19)

46. Rd6

(46. Kh2 Ra8 47. Qf3 Qe8 $19)

46... Kg8

(46... Ra8 {seems even better} 47. Qf3 Qb1+ 48. Kh2 $19)

47. Qf2

(47. Kh2 Kh7 48. Qf2 a3 49. Rxb6 Qa4 $19)

47... Qb1+ 48. Kh2 a3

(48... b5 $142 $19 {might be the shorter path})

49. Rd7 Rf8

(49... Qb4 50. Ra7 $19)

50. Ra7 Qb4

(50... Qb3 51. Qd4 Kh7 52. Qd6 $17)

51. Qf3

(51. Qg3 $142 Rf7 52. Rxa3 $17)

51... g5

(51... Qe4 $142 $5 52. Qg3 Rf7 53. Rxa3 Kh7 $17)

52. fxg5 hxg5 53. Qc6 Qf4+ 54. Kg1 $2

(54. Kh1 $142 {is a viable option} 54... Qxe5 55. Qd7 Qa1+ 56. Kh2 Qe5+ 57.
Kh1 Qe1+ 58. Kh2 Qe5+ 59. Kh1 $11)

54... Qxe5 $4 {there were better ways to keep up the pressure}

(54... Qd4+ $142 {Black clearly has the better chances} 55. Kf1 Qd1+ (55...
Qxe5 $6 56. Qd7 Qa1+ 57. Kf2 Qb2+ 58. Kg1 Qc1+ 59. Kh2 Qf4+ 60. Kh1 Qf1+ 61.
Kh2 Qf4+ 62. Kh1 Qf1+ 63. Kh2 Qf4+ $11) 56. Kf2 Qd5 $19) 1/2-1/2




  #8  
Old July 26th 03, 09:58 PM
Frank
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Posts: n/a
Default please analyze 2

Sorry, forgot an extremely important line from the analysis:

54... Qd4+ 55. Kf1 Qa1+ 56. Kf2 Qa2+ 57. Kf1 (57. Kg1 Qd5) Rd8 58. Qc1
f4 (58... Qxd2 59. Qxd2 Rxd2 60. Rxa3 Rd5 61. Rg3 Rxe5 62. Rxg5+ Kf7
63. Rg3 is interesting; White is definitely fighting for a draw but I
think White has some chances; not entirely sure though...) 59. Rxa3
Qd5. Major pieces are flying all around the board and kings are
exposed. In practice, I think you'd really need to get queens off the
board (see 58... Qxd2) to have a decent winning chances, but the
resulting rooks games give White some chances to draw.

-Frank
  #9  
Old July 26th 03, 10:14 PM
Hans Meier
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Posts: n/a
Default please analyze 2

1. White is threatening mate through Qxe6 and through Qc6-c7/d7-g7/h7.
So Black must either cover g7/h7 or c7/d7/e6.


After 54. Kg1 it is definitely not draw.

Covering c7/d7/e6 can be done by putting the Black Queen on d5 where the
White King is on g2 (this can be forced after some checks if White plays 55.
Kf1). If White then moves the Queen to c7, Black can force a trade of the
Queens with Qc5+.

If White plays 55. Kg2, its even easier. It follows 55. ... Qxe5 56. Kh1
Rd8!!
And Black has a mate threat.

Got it?


...
[snip]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3
e6 7. Nc3 Bb4 8. Bd2 Bxc3 9. bxc3 Nf6 10. Bd3 O-O 11. Qe2 b6
12. O-O Bb7 13. Bg5 Ne8 14. c4 Qd7 15. Rad1 h6 16. Bc1 Nf6 17. Rfe1
Rfe8 18. Bb2 Rad8 19. Bb1 Qc7 20. a3 Na5 21. Ne5 Nd7 22. Nxd7
Rxd7 23. Qc2 Nxc4 24. Qh7+ Kf8 25. Bc1 f5 26. Qg6 Qc6 27. f3
Rde7 28. Bf4 Qd5 29. Be5 Nxe5 30. dxe5 Qc5+ 31. Kh1 Bc8 32. Rd6
Qf2 33. Red1 Bd7 34. h3 Ba4 35. Rc1 Qb2 36. Re1 Qxa3 37. Qg3
Qc3 38. Bd3 Rd7 39. Bf1 Qc5 40. Rxd7 Bxd7 41. Rd1 Bb5 42. Re1
Bxf1 43. Rxf1 a5 44. Rd1 Qb5 45. f4 a4 46. Rd6 Kg8 47. Qf2 Qb1+
48. Kh2 a3 49. Rd7 Rf8 50. Ra7 Qb4 51. Qf3 g5 52. fxg5 hxg5
53. Qc6 Qf4+ 54. Kg1 Qxe5 -- draw

Unless I'm missing some finesse, the final postilion should be drawn
no matter what Black plays on move 54. The important points:

1. White is threatening mate through Qxe6 and through Qc6-c7/d7-g7/h7.
So Black must either cover g7/h7 or c7/d7/e6.
2. Covering g7/h7 with the queen doesn't look feasible because then
Black just takes on e6. Covering the 2nd rank with ...Rf7 loses to
Qe8+. Black can cover e6 and d7 with Qd5, but this does not directly
cover c7. To cover c7-indirectly, White's king must be on the g1-a7
diagonal so that if ...Qd5, Qc7, Black has ...Qc5+ when White must
exchange queens.
3. Therefore, to draw, White must keep his king off the g1-a7 diagonal
as much as possible. He cannot have his king on this diagonal when
Black manages to play ...Qd5.
4. If White can manage all this, Black has nothing better than
perpetual check. If at any time he doesn't give check, White plays
Qc7, Qd7, or Qxe6 as appropriate and then White must give perpetual
check anyway to avoid getting mated. Actually, allowing Qxe6 would
probably just lose for Black.

With all this, White's 54. Kg1 is actually somewhat of a mistake (keep
the king off the g1-a7 diagonal). 54. Kh1 would draw easily.
Nevertheless, White looks like he can still can draw after 54. Kg1:

54... Qxe5 55. Qd7 and Black must deliver perpetual check to avoid
getting mated on h7.

54... Qe3+:

A. 55. Kh2? (55. Kh1? Qe1+ 56. Kh2 is the same thing) Qxe5+
56. Kh1 Rd8 and Black has covered e6, d7, and c7 with a 2-pawn
advantage (either the a3 or b6 pawn will likely fall).

B. 55. Kf1 Qd3+:
B1. 56. Kg1? Qd5 and Black is winning after 57. Qc7?
Qc5+ (the point) 58. Qxc5 bxc5 59. Rxa3 when Black's passed c-pawn is
dangerous. Instead, 57. Qxb6 may offer drawing chances for White as
in 57... a2 58. Qd6 Qxd6 59. exd6 Rd8 60. Rxa2 Rxd6, although Black
does have a passed e-pawn to help him along.
B2. 56. Ke1 looks to be the way to do it. Black can
only deliver perpetual check. If he does not give check, then White
simply plays his queen to either c7 or d7 and then Black really has no
choice but to deliver checks to avoid getting mated. Again, White
must keep his king off the g1-a7 diagonal whenever Black's queen has
access to d5. As an alternative for Black, 56. Ke1 Qe4+ 57. Qxe4 fxe4
58. Rxa3 Rf5 59. Rb3 Rxe5 60. Rxb6 looks like a draw to me.

-Frank



  #10  
Old July 26th 03, 10:19 PM
Frank
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Posts: n/a
Default please analyze 2

On Sat, 26 Jul 2003 22:14:58 +0200, "Hans Meier"
wrote:

1. White is threatening mate through Qxe6 and through Qc6-c7/d7-g7/h7.
So Black must either cover g7/h7 or c7/d7/e6.


After 54. Kg1 it is definitely not draw.

Covering c7/d7/e6 can be done by putting the Black Queen on d5 where the
White King is on g2 (this can be forced after some checks if White plays 55.
Kf1). If White then moves the Queen to c7, Black can force a trade of the
Queens with Qc5+.

If White plays 55. Kg2, its even easier. It follows 55. ... Qxe5 56. Kh1
Rd8!!
And Black has a mate threat.

Got it?


Now that I'm looking at the resulting rook endgames more, I'm
convinced you're right; White doesn't have enough rook activity to
compensate for the missing pawn. White's best chance to draw probably
is just stepping on g1, allowing the queen trade at ...Qc5+, and
defending a pawn down.

Thanks for the insight.

-Frank
 




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