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Subject: Re: Avoid move: Qxe3+, dificult for Fritz8

Author: Fernando Alonso

Date: 08:03:32 05/28/03

Go up one level in this thread


On May 28, 2003 at 05:22:34, Ulrich Tuerke wrote:

>On May 27, 2003 at 12:42:09, Ulrich Tuerke wrote:
>
>>The good old DOS Comet on a 700 MHz machine doesn't like Qxe3 because of
>>1. ... Qxe3+ 2. Kb1 g6 3. Bc1
>>
>>
>>Comet-B.60    Tue May 27 18:16:30 2003
>>
>>depth	score	  sec	  nodes		  pv
>>...
>> 5.	+1.02	    1	   115653	 e7e3  c1b1  g7g6  b2c1  e3e8  d1e1  e8d8
>> 5.	+1.02	    1	   186753	 e7e3  c1b1  g7g6  b2c1  e3e8  d1e1  e8d8
>> 6.	+0.89	    2	   377469	 e7e3  c1b1  g7g6  b2c1  e3d4  d3g6  d4h4
>> 6.	+0.89	    4	   594317	 e7e3  c1b1  g7g6  b2c1  e3d4  d3g6  d4h4
>> 7.	+0.89	    6	   952194	 e7e3  c1b1  g7g6  b2c1  e3d4
>> 7.	+0.89	    9	  1268943	 e7e3  c1b1  g7g6  b2c1  e3d4
>> 8.	+0.57	   17	  2431505	 e7e3  c1b1  g7g6  b2c1  e3e8  d1e1  e8d8
>> 8.	+0.60	   40	  5151048	 g7g6  d1e1  h7h6  c4c5  d6c7  g5f3  f8e8
>> 8.	+0.60	   49	  6376963	 g7g6  d1e1  h7h6  c4c5  d6c7  g5f3  f8e8
>> 9.	+0.58	   87	 10473156	 g7g6  c1b1  f8e8  d1e1  c8b7
>> 9.	+0.58	  117	 15025679	 g7g6  c1b1  f8e8  d1e1  c8b7
>>10.	+0.42	  199	 25468575	 g7g6  d1e1  c8b7  c4c5  d6c7  g2d2  a6a5
>>10.	+0.42	  258	 34369939	 g7g6  d1e1  c8b7  c4c5  d6c7  g2d2  a6a5
>>
>>==> My Move: g7g6 in 4:18
>>
>>
>>Enforcing Qxe3+ Kb1, Comet with a slightly positive score for White expects
>>
>>g6 Nxh7  Kxh7  Bxg6  Kh8  Bc1
>>
>>looking pretty bad for Black, imho.
>
>However, Comet doesn't still see the win for White like Shredder does. Comet
>avoids Qxe3 because of some heavy king saftey penalties.
>
>It seems that Shredder has developed from a positional program into a wizard in
>tactics.
>
>>
>>Uli
I agree, shredder tactics considering this was a 5 min game, are impressive. It
found Kxh7 in just a few seconds and won the game without problem, but..
Looking into the position more deeply, letting the engines work with more time,
I have reached the following position in which I´m not sure if white wins so
easy.
This is the principal line I have followed :
17... g6 18. Nxh7 Qh6 19. Nxf8 Bxf8 20. Bc1 Qh5 21. Rde1 Bg7 22. Qg3 c5 23. Re7
cxd4 *

[D] r1b3k1/3nRpb1/p4np1/3p3q/NpPp4/1P1B2Q1/P6P/1KB3R1 w - - 0 24

Now I believe Bg5 is the move, but I don´t know if the advantage is enough.

Regards,
Fernando.



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