Author: Uri Blass
Date: 10:33:44 06/04/01
Go up one level in this thread
On June 04, 2001 at 12:37:01, Sune Larsson wrote:
>On June 04, 2001 at 10:42:17, Uri Blass wrote:
>
>>On June 04, 2001 at 10:17:35, Uri Blass wrote:
>>
>>>On June 04, 2001 at 09:33:39, Sune Larsson wrote:
>>>
>>>>
>>>> [D]2br3r/1pN1pk2/p1np1pq1/6p1/2P1P1p1/1P2Q1B1/P4PPP/3RR1K1 b - - 0 22
>>>>
>>>>
>>>> This is the position from the CCT3 tournament game Insomniac-Shredder.
>>>> After recieving some mails requesting for comments to my game vs Deep Fritz,
>>>> I post this follow up. It focuses on the subjects "doing nothing" vs
>>>> "doing something", how good are top programs in detecting attacks?,
>>>> how intense and strong is their play when examined under a microscope?
>>>> Kramnik is just around the corner...and what could we really expect from
>>>> those coming games?
>>>>
>>>> In this special game, white has just played 22.Rfe1. Shredder didn't like
>>>> the position (some people claimed it was almost lost), and chose "doing
>>>> nothing" with 22.-Rhf8. White then won. But what would happen if we tried
>>>> a more aggressive attacking plan for black? I wanted to know and that's the
>>>> reason for the following game vs Deep Fritz.
>>>>
>>>> I refrain from more conclusions than those embedded in the pgn.game comments.
>>>>
>>>>
>>>>[Event "Nivå=120'/40+60'/20+30'. "]
>>>>[Site "KIL"]
>>>>[Date "2001.06.01"]
>>>>[Round "?"]
>>>>[White "Deep Fritz"]
>>>>[Black "Larsson"]
>>>>[Result "0-1"]
>>>>[SetUp "1"]
>>>>[FEN "2br3r/1pN1pk2/p1np1pq1/6p1/2P1P1p1/1P2Q1B1/P4PPP/3RR1K1 b - - 0 22"]
>>>>[PlyCount "61"]
>>>>[EventDate "2001.06.01"]
>>>>
>>>>{128MB, PowerBig.ctg. PIII 800 In this position Shredder chose a standstill
>>>>and with 22.-Rhf8 intended to do nothing. White eventually broke through with
>>>>c5 and won the game. Black's major problem is his king, but if white is not
>>>>active enough, black can create dangerous counterplay on the kingside. The
>>>>vulnarable squares around white's king are h2 and f3, so a setup with Ne5, Qh5
>>>>(to support a possible Nf3+) and doubling the rooks on the h-file, looks
>>>>promising.} 22... Qh5 {0 Gambit Tiger chooses 22.-e5 with the plan of planting
>>>>the knight on d4. But white gets a dangerous attack after 23.Qb6 Nd4 24.Rxd4
>>>>and later breaking in the center. After some moves GT showed an eval of more
>>>>than -2.00. In this variation black's king is too naked. Instead 22.-Qh5 focus
>>>>on both h2 and f3, and if white is passive, he can easily get in danger.} 23.
>>>>a3 {1.44/14 196 White is doing nothing. This move simply wastes a tempo and
>>>>has no purpose at all. Much better was f.e.23.c5} 23... Rh6 {54 Preparing to
>>>>double the rooks on the h-file, and at the same time setting a little trap for
>>>>white, who now can go pawnhunting.} 24. Qb6 {1.97/14 93 Yes, white sees the
>>>>option of getting some on the Q-side. Much more direct was again 24.c5} 24...
>>>>Ne5 {56 And now black has reached his ideal attacking setup. White has to be
>>>>very careful about the option Nf3+, since there are loads of mate patterns
>>>>with a black pawn on f3.} 25. Nxa6 {2.09/13 75 White takes the pawn and feels
>>>>happy with +2.09. Again white could play 25.c5
>>>
>>>I believe that the time management of Deep Fritz is the main mistake
>>>here.
>>>
>>>Deep Fritz has a tendency to use less time when the score goes up and
>>>it is a clear mistake in the time management.
>>>
>>>This mistake in time management is typical to Fritz's versions.
>>>
>>>If you give Deep Fritz more time to get into depth 14
>>>it can find 25.Ne6 with no problem and I believe that white
>>>has no problem after 25.Ne6.
>>>
>>>Uri
>>
>>I can add that the main problem is
>>not failing high but the fact that Fritz does not like to calculate
>>when it see a big advantage for itself.
>>
>>At depth 14 Deep Fritz fails low but Fritz cannot get into depth 14
>>at tournament time control because it does not like to calculate
>>when the evaluation is more than +2.
>
> Thanks, a very interesting comment. I didn't know this "habit" of Fritz.
> Obviously there are great risks with such a time management...
> In the game I was very happy when Fritz took the pawn on a6, simply
> because such play cannot be correct.
>
> Sune
It was clearly a bad time management of Fritz but it seems that
my explanation is not the right explanation.
It seems that it has to do something with the fact that Fritz did not
change it's mind in previous iterations.
This happens in some tactical positions when Fritz is happy but
the reason for the bad time management does not seem to be the fact
that Fritz is happy.
Uri
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