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Subject: Re: Nice double piece sac by Shredder9

Author: Darrel Briley

Date: 01:05:38 03/29/05

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On March 29, 2005 at 03:40:01, Richard Pijl wrote:

>On March 29, 2005 at 03:36:24, Richard Pijl wrote:
>
>>On March 28, 2005 at 17:01:26, Darrel Briley wrote:
>>
>>>The game ends in a draw, but I have to wonder if Shredder would've brought home
>>>the full point at longer time controls (game was blitz 10 6).  I'll let others
>>>argue about whether the sacrifices were tactical or positional (I tend to think
>>>of it as a little of both since it exposes the enemy King without a clear
>>>material gain...anyway, take a look at the postiion at white's 22nd move...I'd
>>>post a diagram if I knew how (is there an FAQ on that somewhere for this forum?)
>>
>>Just put [D] in front of a FEN string; that will print the Diagram.
>>
>
>This is one of those positions that is sensitive to tuning. When I make the
>Baron to like sacrifices a little bit more, it stays with Bxh6 already in 4.5
>seconds (just add 'sacrifices 4' to the baron.ini file to see for yourself.
>'sacrifices 3' is the default setting):
>
> ply       time        nodes   score  pv
>  6(12)&   0:00.55    125207   +0.36  Rc1-a1 Rc8-a8 c3-c4 Ra8xa1 Re1xa1
>                                      b5xc4 d3xc4
>  6(12)&   0:00.89    208779   +0.38  Rc1-d1 Nd5-b6 Bd2-f4 Be7-d6 Bf4xd6
>                                      Qc7xd6 d3-d4
>  6(12)+   0:01.25    283794   +0.68  Bd2xh6 (g7xh6) (Ng4xh6) (Kg8-f8) (Nh6xf7)
>                                      (Be7-f6) (Nf3-g5)
>  6(12)&   0:01.33    306542   +0.72  Bd2xh6 g7xh6 Ng4xh6 Kg8-f8 Nh6xf7
>                                      Nd5xc3 Qe2xe6
>  6(12).   0:01.38    317495   +0.72  Bd2xh6 g7xh6 Ng4xh6 Kg8-f8 Nh6xf7
>                                      Nd5xc3 Qe2xe6
>  7(13)-   0:01.95    456190   +0.42  Bd2xh6 (g7xh6) (Ng4xh6) (Kg8-f8) (Nh6xf7)
>                                      (Be7-f6) (Nf3-g5) (Nc6-e5)
>  7(13)&   0:02.44    570724   +0.37  Bd2xh6 g7xh6 Ng4xh6 Kg8-f8 Nh6xf7
>                                      Be7-f6 Nf3-g5 Nc6-e5
>  7(13)&   0:02.61    615847   +0.41  c3-c4 b5xc4 d3xc4 Nd5-b6 Bd2-f4
>                                      Qc7-d7 Nf3-e5
>  7(13).   0:02.88    683473   +0.41  c3-c4 b5xc4 d3xc4 Nd5-b6 Bd2-f4
>                                      Qc7-d7 Nf3-e5
>  8(12)&   0:03.34    799868   +0.17  c3-c4 b5xc4 d3xc4 Nd5-b6 Bd2-f4
>                                      Qc7-d8 Nf3-e5 Nc6-d4
>  8(14)&   0:04.58   1110141   +0.33  Bd2xh6 g7xh6 Ng4xh6 Kg8-f8 Nh6xf7
>                                      Be7-f6 Nf3-g5 Nc6-e5 c3-c4
>  8(15).   0:09.53   2195714   +0.33  Bd2xh6 g7xh6 Ng4xh6 Kg8-f8 Nh6xf7
>                                      Be7-f6 Nf3-g5 Nc6-e5 c3-c4
>  9(15)&   0:12.11   2839229   +0.33  Bd2xh6 g7xh6 Ng4xh6 Kg8-f8 Nh6xf7
>                                      Be7-f6 Nf3-g5 Nc6-e5 c3-c4 Ne5xf7 (Ng5xe6)
>
>  9(15).   0:23.81   5600748   +0.33  Bd2xh6 g7xh6 Ng4xh6 Kg8-f8 Nh6xf7
>                                      Be7-f6 Nf3-g5 Nc6-e5 c3-c4 Ne5xf7 (Ng5xe6)
>
> 10(14)+   0:31.39   7452377   +0.63  Bd2xh6 (g7xh6) (Ng4xh6) (Kg8-f8) (Nh6xf7)
>                                      (Be7-f6) (Nf3-g5) (Nc6-e5) (Nf7xe5)
>(Bf6xg5) (Rc1-a1)
> 10(16)&   0:42.84  10183863   +0.74  Bd2xh6 g7xh6 Ng4xh6 Kg8-g7 Nh6xf7
>                                      Nc6-d8 Nf3-g5 B^C

Yes, Shredder saw the sac immediately, and played the move very quickly...  I
have to say it was a good old fashioned "king hunt".  Here's my first try at a
diagram.

 [D]2r1r1k1/1bq1bpp1/2n1p2p/1ppn4/6N1/2PP1NP1/1P1BQPBP/2R1R1K1 w - -



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