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Old August 26th 05, 01:03 PM
 
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Default Does a strong comp say there is a winning combination here?

Bs'd

I played this game with black on Yahoo:

Yahoo game 22/8/05
Cpsr1982 elo 1499 playing white against Eliyahu with black:

1.d2-d4 e7-e5
2.d5-d6 g8-f6
3.c2-c4 f8-c5
4.h2-h3 d7-d6
5.b1-c3 a7-a6
6.c1-g5 h7-h6
7.g5-h4 c8-f5
8.f2-f3 b8-d7
9.g2-g4 f5-h7
10. e2-e4 g7-g5
11. h4-g3 d8-e7
12. h3-h4 g5xh4
13. g3xh4 e7-f8
14. d1-d2 f8-g7
15. 0-0-0 b7-b5
16. b2-b3 b5xc4
17. f1xc4 d7-b6
18. c4-d3 a6-a5
19. c3-b5 e8-d7
20. d3-f1 h8-b8
21. a2-a4 b5-c8
22. f1-h3

I am positionally outplayed here, but I have a strong suspicion that
there is a winning combination for black on move 22, but I am just not
sure.

Crafty didn't see it, and I don't have really strong software like the
latest Frits or Hydra.

Can somebody maybe check this out with a strong program?

Eliyahu

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Old August 26th 05, 07:45 PM
Michael Wäsch
 
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Crafty didn't see it, and I don't have really strong software like
the
latest Frits or Hydra.

Can somebody maybe check this out with a strong program?


303: n bek - n bek, 2005
rrn5/2pk1pqb/3p1n1p/pNbPp3/P3P1PB/1P3P1B/3Q4/2KR2NR b - - 0 1

Analysis by Shredder 9 SE:

1. ± (1.02): 22...Ke7 23.Lxf6+ Dxf6 24.g5 Dg7 25.gxh6 Df6 26.Kc2 Tb7
27.Lg4 Sa7 28.Sxa7 Lxa7 29.Sh3 Tab8 30.Sg5 Lg6 31.h7
2. +- (2.65): 22...Lb4 23.Dc2 Kd8 24.Dxc7+ Ke8 25.Th2 Lc5 26.Tc2 Lb6
27.Sxd6+ Kf8 28.Dc6 Se7 29.Sf5 Sxc6 30.Sxg7 Le3+
3. +- (3.26): 22...Sxe4 23.g5+ Ke8 24.fxe4 Txb5 25.gxh6 Df8 26.axb5
Lxe4 27.Dg5 Se7 28.Lg2 Sf5 29.Te1 Lxg2

Mike


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Old August 26th 05, 09:38 PM
 
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Chessmaster 9000 agrees with Shredder 9 that White has a significant
advantage, due to the spatial advantage. Although material is even, CM9
agrees that White is at least a full pawn ahead due to that, and the
threat of g5+. It also agrees that the best move for Black at this time
is Ke7.

As for other opportunities, you had 9...Ne4! Your queen cannot be taken
due to Bf2#.

You probably should have castled on move 10.

And 16...Ba3+ followed by 17...b4 would have been very annoying for
White to deal with.

The only style issue I see from this game is that you should be willing
to exchange (or even lose!) material to avoid the kind of spatial
advantage you have given your opponent. If White plays well, he should
be able to simply squeeze you to death.

jm

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Old August 27th 05, 07:23 PM
 
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Bs'd

I played this game a few days ago, when Yahoo had a bug, and didn't
send the game to the email, so I had to type it all out by hand.
That's why the typo's.
Here is an (I think) 100% correct game:

1.d2-d4 e7-e5
2.d4-d5 g8-f6
3.c2-c4 f8-c5
4.h2-h3 d7-d6
5.b1-c3 a7-a6
6.c1-g5 h7-h6
7.g5-h4 c8-f5
8.f2-f3 b8-d7
9.g2-g4 f5-h7
10. e2-e4 g7-g5
11. h4-g3 d8-e7
12. h3-h4 g5xh4
13. g3xh4 e7-f 8
14. d1-d2 f8-g7
15. 0-0-0 b7-b5
16. b2-b3 b5xc4
17. f1xc4 d7-b6
18. c4-d3 a6-a5
19. c3-b5 e8-d7
20. d3-f1 h8-b8
21. a2-a4 b5-c8
22. f1-h3

And I continued with the following combination:

.......... 0.f6xe4
23. f3xe4 h7xe4
24. g4-g5+ d7-e8
25. g5xh6 g7-h7
26. h1-h2 b8xb5
27. a4xb5 c5-a3+
28. d2-b2 a3xb2+
29. c1-b2 h7xh6
30. d1-c1 h6-f4
31. h2-e2 f4xh4
32. c1xc7 f7-f5
33. c7-g7 c8-e7
34. b2-a3 e4xd5
35. e2-e3 h4-b4+
36. a3-a2 b4-d2+
White resigns.

Was my combination correct or not?

Eliyahu

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Old August 27th 05, 07:55 PM
 
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Bs'd

As for other opportunities, you had 9...Ne4! Your queen cannot be taken

due to Bf2#.

That is technically correct, but I don't see what advantage it would
have given me, except for giving him a doubled pawn.

Eliyahu



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Old August 27th 05, 08:01 PM
 
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Bs'd

Thanks for the advice.

I played this game a few days ago, when Yahoo had a bug, and didn't
send the game to the email, so I had to type it all out by hand.
That's why the typo's.
Here is an (I think) 100% correct game:

1.d2-d4 e7-e5
2.d4-d5 g8-f6
3.c2-c4 f8-c5
4.h2-h3 d7-d6
5.b1-c3 a7-a6
6.c1-g5 h7-h6
7.g5-h4 c8-f5
8.f2-f3 b8-d7
9.g2-g4 f5-h7
10. e2-e4 g7-g5
11. h4-g3 d8-e7
12. h3-h4 g5xh4
13. g3xh4 e7-f 8
14. d1-d2 f8-g7
15. 0-0-0 b7-b5
16. b2-b3 b5xc4
17. f1xc4 d7-b6
18. c4-d3 a6-a5
19. c3-b5 e8-d7
20. d3-f1 h8-b8
21. a2-a4

And I proceeded in the following way:

......... f6xe4
23. f3xe4 h7xe4
24. g4-g5+ d7-e8
25. g5xh6 g7-h7
26. h1-h2 b8xb5
27. a4xb5 c5-a3+
28. d2-b2 a3xb2+
29. c1-b2 h7xh6
30. d1-c1 h6-f4
31. h2-e2 f4xh4
32. c1xc7 f7-f5
33. c7-g7 c8-e7
34. b2-a3 e4xd5
35. e2-e3 h4-b4+
36. a3-a2 b4-d2+
White resigned.

Would the played combination be correct or not?

Eliyahu

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Old August 28th 05, 01:32 AM
[email protected]
 
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I'm a little confused with the move numbers, because you end the first
group after White's 21st move and start up again with what appears to
be Black's 22nd move. I'll try to use the move numbers from your second
group whenever possible.

I must stress that your combo starting with Nxe4 simply loses, and
after 23..Bxe4 you are completely lost! But, luckily for you, your
opponent missed 26.Qg5 (with the threat of Qd8#), which would have
completely sealed the win.

But 26.Rh2 handed you the win, and you did well to spot the rook
sacrifice 26...Rxb5 (a classic case of "removing the defender"). After
your opponent took the rook, it was all over.

jm

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Old August 29th 05, 11:08 AM
David Richerby
 
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wrote:
Here is an (I think) 100% correct game:

1. d4 e5 2. d5 Nf6 3. c4 Bc5 4. h3 d6 5. Nc3 a6 6. Bg5 h6 7. Bh4 Bf5
8. f3 Nbd7 9. g4 Bh7 10. e4 g5 11. Bg3 Qe7 12. h4 gxh4 13. Bxh4 Qf8
14. Qd2 Qg7 15. O-O-O b5 16. b3 bxc4 17. Bxc4 Nb6 18. Bd3 a5 19. Nb5 Kd7
20. Bf1 Rhb8 21. a4

And I proceeded in the following way:

... Nxe4 23. fxe4 Bxe4 24. g5+

Would the played combination be correct or not?


Impossible to say as you've missed out a move from each side just before
the combination. I infer that White's 22nd must be Bh3 so that 24.g5
really does give check but it's not immediately obvious what Black's 21st
is.


Dave.

--
David Richerby Simple Priest (TM): it's like a man of
www.chiark.greenend.org.uk/~davidr/ the cloth but it has no moving parts!
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