Author: Kurt Utzinger
Date: 12:57:00 03/26/04
Go up one level in this thread
On March 26, 2004 at 15:20:59, Dan Andersson wrote:
>On March 26, 2004 at 15:10:37, Kurt Utzinger wrote:
>
>>On March 26, 2004 at 14:43:35, Dan Andersson wrote:
>>
>>>On March 26, 2004 at 13:49:45, Kurt Utzinger wrote:
>>>
>>>>[D]r1b1r1k1/ppq3pp/2n1pp2/3pP3/8/2PBQN2/PP3PPP/4RRK1 b - - 0 17
>>>>
>>>Instant blip on the radar.
>>>Engine UCI 62 MB 933MHz PIII Cu-Mine:
>>> 6 00:00 -0,64 f6f5 Nf3g5 Bc8d7 f2f4 h7h6 Ng5f3
>>> 7 00:01 -0,51 f6f5 Nf3g5 Bc8d7 f2f4 h7h6 Ng5f3 a7a6
>>> 8 00:01 -0,57 f6f5 Nf3g5 Bc8d7 f2f4 h7h6 Ng5f3 Qc7b6 Qe3xb6 a7xb6
>>> 9 00:03 -0,51 f6f5 Nf3g5 h7h6 Ng5f3 Bc8d7 Re1d1 a7a6 a2a4 Re8f8
>>>10 00:05 -0,51 f6f5 Nf3g5 h7h6 Ng5f3 Bc8d7 Re1d1 Re8f8 Rf1e1 Qc7b6 Qe3c1
>>>11 00:09 -0,48 f6f5 Nf3g5 h7h6 Ng5f3 Bc8d7 Re1a1 Re8c8 Rf1e1 Bd7e8 Nf3d4
>>>Nc6xd4 c3xd4
>>>12 00:15 -0,48 f6f5 Nf3g5 h7h6 Ng5f3 Bc8d7 Re1a1 Re8c8 Rf1d1 Bd7e8 c3c4
>>>d5xc4 Bd3xc4 Qc7e7
>>>13 00:33 -0,48 f6f5 Nf3g5 h7h6 Ng5f3 Bc8d7 Re1a1 Re8c8 Rf1d1 a7a6 a2a3 Bd7e8
>>>Nf3d4 Nc6xd4 c3xd4
>>>
>>>
>>>
>>>>How long needs your engine to avoid 17...fxe5? which would be
>>>>a positonal bad move since Black remains with a passive bishop
>>>>on c8 and a weak backward pawn on e6. Best seems to close the
>>>>centre with 17...f5 but other moves keeping the tension are
>>>>also stronger than 17...fxe5?
>>>
>>> The position seems critical after any move. Black must parry the threat
>>>exf6/c3-c4 thus the number of possible moves are severely limited.
>>> After 17. .. f5 then the slow 18. a3 or the brutal 18.c4 both seem promising.
>>>
>>>MvH Dan Andersson
>>
>> Hi Dan
>> I do not agree with your comment as far as the "threat" c3-c4 is
>> concerned. After 17...f5! the pawn advance 18.c4 looks bad to me
>> as after 18...Nb4! 19.cxd5 Nxd5 Black is fine.
>> Kurt
> I kind of knew you would dig up that line :) But it is still promising for
>white after 17. .. f5 18. c4 Nb4 19. cxd5 Nxd5 20. Qd2 Black has a couple of
>problems. First of all the Square d6. Secondly the backwards e6. And the third
>is the trouble extricating the bishop without weakening the c6 field. Probably
>not losing disadvantage, but still a lot to work with for white.
> And that still leaves the 18. a3 option.
>MvH Dan Andersson
Hi Dan
In the meantime I have studied the position more deeply and now
tend to admit that you may be right: Black's position is not at
all a comfortable one (it's alway good to have someone who is
very critical at speedy analysis)
Kurt
[Event "120'/40+60'/20+60'/20"]
[Site "MyTown"]
[Date "????.??.??"]
[Round "?"]
[White "Shredder 8"]
[Black "Utzinger, K."]
[Result "*"]
[SetUp "1"]
[FEN "r1b1r1k1/ppq3pp/2n1pp2/3pP3/8/2PBQN2/PP3PPP/4RRK1 b - - 0 17"]
[PlyCount "16"]
[TimeControl "40/7200:20/3600:20/3600"]
17... f5 18. c4 (18. a3 {is perhaps even more critical for Black}) 18... Nb4 {0
} 19. cxd5 Nxd5 20. Qd2 Rd8 21. Rc1 Qe7 22. Bc4 (22. Nd4 {also interesting})
22... b6 23. Rfd1 Bb7 24. Qg5 Rd7 25. g4 {and White has clear advantage} *
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