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Subject: Re: These things should come with PVs!

Author: Pete R.

Date: 09:15:15 07/27/00

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On July 27, 2000 at 01:22:58, Mogens Larsen wrote:

>On July 26, 2000 at 19:59:43, Pete R. wrote:
>
>>On July 26, 2000 at 14:08:22, Côme wrote:
>>
>>>
>>>Hello there are 12 new interesting positions for chess programs !!
>>>
>>>r1b2rk1/p6p/1p4q1/2pP1p2/2Q2B1p/5RbP/P1B3P1/1R4K1 w - - bm Rxg3!;
>>
>>It would be much better to have PVs along with the best moves for position
>>analysis.  For example I don't see why Rxg3 is any better than Bxg3. Neither
>>does Fritz, but I will let it run tonight.
>
>Just make the PVs yourself by pursuing each variation separately, that is going
>with the moves Fritz selects after something like 5-10 minutes. I tried to do
>that for a while with Yace and after Rxg3 hxg3 Rb3 Qf6 Rxg3+ Kf7 things are
>beginning to look brighter for white. It would be interesting to pursue the Bxg3
>hxg3 line as well. Some lines may be too deep for direct calculation.
>
>Best wishes...
>Mogens

I normally do, and in this case I found nothing dramatic to show that Rxg3
deserves a !.  That's why these things should come with a PV, to save everyone
from the work!  I let Fritz 6a run overnight on this and it still sees nothing
special:

  =  (0.03)   Depth: 7/20   00:00:00  163kN
1.Bxg3 hxg3 2.Qf4 Qf6 3.Rxg3+ Kh8 4.Rd1 Re8 5.Rf3 Re2
  =  (0.09)   Depth: 8/21   00:00:01  271kN
1.Bxg3 hxg3 2.Qf4 Qf6 3.Rxg3+ Kh8 4.Rd1 Re8 5.d6 Bd7
  =  (0.16)   Depth: 9/24   00:00:02  616kN
1.Bxg3 hxg3 2.Qf4 Qf6 3.Rxg3+ Kh8 4.Rd1 Re8 5.d6 Bd7
  =  (0.06)   Depth: 10/27   00:00:06  1778kN
1.Bxg3 hxg3 2.Qf4 Qf6 3.Rxg3+ Kh8 4.Rd1 Re8 5.d6 Bd7
  =  (0.00)   Depth: 11/32   00:00:22  6811kN
1.Bxg3 hxg3 2.Qf4 Qf6 3.Rxg3+ Kh8 4.Rd1 Bd7 5.Rf3 Rae8
  =  (0.00)   Depth: 12/31   00:00:58  17998kN
1.Bxg3 hxg3 2.Qf4 Qf6 3.Rxg3+ Kh8 4.Re3 Bb7 5.Rd1 Rad8
  =  (0.00)   Depth: 13/34   00:02:59  55827kN
1.Bxg3 hxg3 2.Qf4 Qf6 3.Rxg3+ Kh8 4.Re3 Bb7 5.Rd1 Rad8
  =  (-0.06)   Depth: 14/35   00:08:38  156357kN
1.Rd1
  =  (-0.03)   Depth: 14/36   00:10:13  185071kN
1.Rd1 Bxf4 2.Qxf4 Bd7 3.Qxh4 Kh8 4.Rf2 Qd6 5.Qf4 Qxf4
  =  (0.00)   Depth: 15/38   00:24:18  447580kN
1.Bxg3
  =  (-0.12)   Depth: 15/38   00:25:11  464741kN
1.Bxg3 hxg3 2.Re1 Qf6 3.Rxg3+ Kh8 4.Rge3 Bd7 5.Qf4 Rae8
  =  (-0.03)   Depth: 15/47   00:47:34  901681kN
1.Bxg3 hxg3 2.Re1 Qf6 3.Rxg3+ Kh8 4.Rge3 Bd7 5.Qf4 Rg8
  =  (0.00)   Depth: 16/39   01:18:33  1503741kN
1.Bxg3 hxg3 2.Re1 Qf6 3.Rxg3+ Kh8 4.Rge3 Bd7 5.Qf4 Rf7
  =  (-0.06)   Depth: 17/42   02:39:20  3082384kN
1.Bxg3 hxg3 2.Re1 Qf6 3.Rxg3+ Kh8 4.Rge3 Bd7 5.Qf4 Rf7
  =  (-0.12)   Depth: 18/45   08:48:26  10269212kN




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