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Normal Topic Alburt variation with 0-0 (Read 1556 times)
lg
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Re: Alburt variation with 0-0
Reply #2 - 10/30/15 at 20:32:37
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Tony

I looked at this line with Komodo8 and it usually gives evaluation close to 0.00 with depth 25 (which is not compared with depth 42 Smiley).
I "played" a few engine matches and, in generally, after this position, a draw is obtained (sometimes long and weird games); the idea i got is that this is weird for Black, but if a good engine is playing Black it might survive (and even be Ok, meaning equal)

a few remarks on the line you mentioned:

i) I agree with the evaluation ! for 12.Be3 (although I think that 12.Nbd2 as in the game is playable and should be analised if you want to use this line as Black)

ii) a joke - if in the line you mention, Black plays 17...Bxe5?? it get mated in one move

iii) why 15.Nbd2 with evaluation ! ?
why is this move preferred to 15.Nc3 (in some cases,
it might even transpose) ??

iv) as an alternative to 17.Nd(c)e4, White might play the other knight to e4 freeing the square g5 for the bishop
(but removing the alternative for playing Bc5)

v) in your line, and if I am convinced going for the Exchange is the main idea, i would play 18.Bc5 since after 18.axb3 Black can play 18...Nbd7

this is what I recall for the moment

anyway, I think that 11...c5 might be the only chance if you want to revive 8...0-0, and thus the line you mentioned need to be analised well
  
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TonyRo
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Re: Alburt variation with 0-0
Reply #1 - 10/30/15 at 02:42:06
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I looked at this variation very briefly tonight, and it appears as though, at least to me, 12.Bxh6! is simply very good. I noticed that Chessbase's "Let's Check" analysis sharing feature had 12...c4 13.Be3! as +1.0 @ depth = 42, which is really high for a complex position like this. Someone must have let their computer sit for a very long time!

Continuing on, it seems like 13...cxb3 14.Ng5 Re8 15.Nd2! N8d7 16.Qh7+ Kf8 17.Nde4 Nxe5 17.axb3 is simply very uncomfortable for Black. White is winning at least an exchange back (Bc5+ is coming soon and Black will have to toss the Re8 in the way with ...Re7), Black's king/development are both worrying.
  
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lg
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Alburt variation with 0-0
03/19/15 at 23:58:55
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In one of the last twic downloads i saw an "interesting" game in the Alburt variation game by two rather unknown players

(1449) Fuchs,Ju (2299) - Ries,J (1981) [B04]
DFEM 2015 Bad Wiessee GER (9.4), 14.02.2015
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.Ng5 e6 8.Qf3 0–0 9.Qh3 h6 10.Nf3 dxe5 11.dxe5 c5 12.Bxh6 c4 13.Nbd2 cxb3 14.Ne4 N6d7 15.0–0 Nc6 16.Nfg5 Bxe5 17.Bg7 Qxg5 18.Qh8# 1–0

11...c5 is a move that I think is worth analising since after the usual replies 12 c4 or Na3 Black can go back to the Nc6 variant (the engines and CC players prefer 13...h5, apparently with an almost equal game)  since the good line for White (without 11...c5)  no longer works;

now, White above played the sacrifice 12.Bxh6 !? (?!) which is not good for White according to computers;
but after some time of analysis the computer (Houdini4) starts changing its evaluation

after 12...c4 13.Nbd2 cxb3 14. Ne4 the only move according to the engines (for the other moves they gives a +/- evaluation) is the non-obvious
14...Nd5 (with -/+ evaluation at the beginning, then, later on =/+ and finally =, although with -0.26 with a complicated and less than obvious sequence of moves); but if you look at this position you see all White pieces piling up for an attack on the black kingside

the move 14...N6d7 ?? played by Black is clearly a blunder and after 15.Nfg5 Black is simply lost, although White played
15. 0-0 ?! and Black is on the game again, however after 15...Nc6? (Black is Ok with Qc7 or Re8) we have 16.Nfg5 +/-

after the "correct" 14...Nd5, 15.Nfg5 fails to 15...Nf4; but 15 c4 is playable with a complex position and not easy to
analyse without a computer

well, just thought could "broadcast" this in case anyone interested may comment
  
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