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Subject: Re: f3?? from deepblue-kasparov game 5 match1

Author: Uri Blass

Date: 04:20:40 09/16/01

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On September 16, 2001 at 06:20:38, Slater Wold wrote:

>On September 16, 2001 at 05:40:31, Uri Blass wrote:
>
>>On September 15, 2001 at 18:37:06, Slater Wold wrote:
>>
>>>On September 15, 2001 at 17:12:37, Vincent Diepeveen wrote:
>>>
>>>[D]8/p4bpk/7p/3rq3/3Npp2/PPQ3P1/3R1PKP/8 w - - 3 32
>>>
>>>Deep Fritz fails low on gxf4 in :54 seconds, but has a hard time replacing it.
>>>
>>>Deep Fritz T29c - W,S
>>>8/p4bpk/7p/3rq3/3Npp2/PPQ3P1/3R1PKP/8 w - - 0 1
>>>
>>>Analysis by Deep Fritz T29c:
>>>
>>>1.gxf4
>>>  ³  (-0.50)   Depth: 1/3   00:00:00
>>>1.Kg1 fxg3
>>>  ³  (-0.44)   Depth: 2/14   00:00:00
>>>1.Rd1 f3+
>>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>>1.Rd1 f3+
>>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>>1.Rd1 f3+
>>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>>1.Rd1 f3+
>>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>>1.Rd1 f3+
>>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>>1.Rd1 f3+
>>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>>1.Rd1 f3+
>>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>>1.Rd1 Qh5 2.Qe1 f3+ 3.Kg1
>>>  ³  (-0.41)   Depth: 3/13   00:00:00  3kN
>>>1.h3!
>>>  ³  (-0.37)   Depth: 3/15   00:00:00  4kN
>>>1.h3! f3+
>>>  ³  (-0.34)   Depth: 3/15   00:00:00  5kN
>>>1.gxf4!
>>>  ³  (-0.31)   Depth: 3/16   00:00:00  6kN
>>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5
>>>  =  (-0.25)   Depth: 4/14   00:00:00  7kN
>>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5 4.Kg1
>>>  ³  (-0.31)   Depth: 5/15   00:00:00  20kN
>>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5 4.Kg1 a6
>>>  ³  (-0.31)   Depth: 6/17   00:00:00  41kN
>>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5 4.Qe3 Qg6+ 5.Qg3 Qf6
>>>  ³  (-0.31)   Depth: 7/19   00:00:00  77kN
>>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Nxf3 Bd5
>>>  ³  (-0.37)   Depth: 8/22   00:00:00  163kN
>>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Nxf3 Bd5 6.Rf2
>>>  ³  (-0.34)   Depth: 9/21   00:00:00  435kN
>>>1.gxf4--
>>>  ³  (-0.66)   Depth: 10/28   00:00:00  829kN
>>>1.gxf4-- Qxf4 2.Qe3 Rg5+ 3.Kf1 Qxh2 4.Qxe4+ Bg6 5.Qe3 Re5 6.Qf3 Be4
>>>  µ  (-0.91)   Depth: 10/28   00:00:01  1322kN
>>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kf1 Qxh2 4.Qxe4+ Bg6 5.Qe3 Re5 6.Qf3 Be4
>>>  µ  (-0.78)   Depth: 11/28   00:00:10  10103kN
>>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kf1 Qxh2 4.Qxe4+ Bg6 5.Qe3 Rg1+ 6.Ke2 Qh5+
>>>  µ  (-0.87)   Depth: 12/30   00:00:15  14926kN
>>>1.gxf4--
>>>  µ  (-1.19)   Depth: 13/32   00:00:36  35237kN
>>>1.gxf4-- Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Qf2 Qf4 6.Nxf3 Bd5
>>>  -+  (-1.69)   Depth: 13/34   00:00:54  51719kN
>>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Qf2 Bd5 6.Rd1 Kg6
>>>  -+  (-1.78)   Depth: 14/34   00:03:06  176328kN
>>>1.gxf4--
>>>  -+  (-2.09)   Depth: 15/37   00:06:25  368131kN
>>>1.gxf4-- Qxf4 2.Kh1 Rg5 3.f3 Bh5 4.Rg2 exf3 5.Rxg5 f2 6.Qd3+ g6
>>>  -+  (-3.03)   Depth: 15/38   00:10:17  576496kN
>>>
>>>(W,  15.08.2001)
>>
>>For comparison analysis of Deep Fritz on p800(64 Mbytes hash)
>>Deep Fritz searched for more than 10 hours at depth 17 but
>>it still looks at f3.
>>
>>Note that Deep fritz finds fail low for gxf4 in less than 10 minutes
>>and it probably means that with the best hardware Deep Fritz can
>>find f3 at tournament time control.
>>
>>New position
>>8/p4bpk/7p/3rq3/3Npp2/PPQ3P1/3R1PKP/8 w - - 0 1
>>
>>Analysis by Deep Fritz:
>>
>>1.gxf4--
>>  ³  (-0.50)   Depth: 1/3   00:00:00
>>1.gxf4--
>>  ³  (-0.50)   Depth: 1/3   00:00:00
>>1.h3!
>>  ³  (-0.28)   Depth: 1/10   00:00:00
>>1.h3! f3+ 2.Kg1
>>  =  (-0.25)   Depth: 1/10   00:00:00
>>1.Kg1!
>>  =  (-0.19)   Depth: 1/10   00:00:00
>>1.Kg1! fxg3
>>  =  (0.00)   Depth: 1/10   00:00:00
>>1.Kg1 e3
>>  ³  (-0.44)   Depth: 2/14   00:00:00
>>1.Rd1!
>>  ³  (-0.34)   Depth: 2/14   00:00:00
>>1.Rd1! f3+
>>  ³  (-0.28)   Depth: 2/14   00:00:00
>>1.Rd1 Qh5 2.Qe1 f3+ 3.Kg1
>>  ³  (-0.41)   Depth: 3/13   00:00:00  3kN
>>1.h3!
>>  ³  (-0.37)   Depth: 3/15   00:00:00  4kN
>>1.h3! f3+
>>  ³  (-0.34)   Depth: 3/15   00:00:00  5kN
>>1.gxf4!
>>  ³  (-0.31)   Depth: 3/16   00:00:00  6kN
>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5
>>  =  (-0.25)   Depth: 4/14   00:00:00  7kN
>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5 4.Kg1
>>  ³  (-0.31)   Depth: 5/15   00:00:00  20kN
>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5 4.Kg1 a6
>>  ³  (-0.31)   Depth: 6/17   00:00:00  40kN
>>1.gxf4 Qxf4 2.Qe3 Qg4+ 3.Qg3 Qh5 4.Qe3 Qg6+ 5.Qg3 Qf6
>>  ³  (-0.31)   Depth: 7/19   00:00:00  83kN
>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Nxf3 Bd5
>>  ³  (-0.37)   Depth: 8/23   00:00:00  152kN
>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Nxf3 Bd5 6.Rf2
>>  ³  (-0.34)   Depth: 9/25   00:00:00  417kN
>>1.gxf4--
>>  ³  (-0.66)   Depth: 10/28   00:00:01  801kN
>>1.gxf4-- Qxf4 2.Qe3 Rg5+ 3.Kf1 Qxh2 4.Qxe4+ Bg6 5.Qe3 Re5 6.Qf3 Be4
>>  µ  (-0.91)   Depth: 10/28   00:00:01  1262kN
>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kf1 Qxh2 4.Qxe4+ Bg6 5.Qe3 Re5 6.Qf3 Be4
>>  µ  (-0.78)   Depth: 11/30   00:00:13  9723kN
>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kf1 Qxh2 4.Qxe4+ Bg6 5.Qe3 Rg1+ 6.Ke2 Qh5+
>>  µ  (-0.87)   Depth: 12/30   00:00:20  14667kN
>>1.gxf4--
>>  µ  (-1.19)   Depth: 13/32   00:00:47  33715kN
>>1.gxf4-- Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Qf2 Qf4 6.Nxf3 Bd5
>>  -+  (-1.69)   Depth: 13/36   00:01:15  52680kN
>>1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Qf2 Bd5 6.Rd1 Kg6
>>  -+  (-1.78)   Depth: 14/35   00:04:39  199152kN
>>1.gxf4--
>>  -+  (-2.09)   Depth: 15/37   00:09:43  422090kN
>>1.gxf4-- Qxf4 2.Kh1 Rg5 3.f3 Bh5 4.Rd1 Rd5 5.Re1 e3 6.Qc2+ Bg6
>>  -+  (-2.78)   Depth: 15/40   00:14:51  635762kN
>>1.f3!
>>  -+  (-2.75)   Depth: 15/40   00:32:40  1427443kN
>>1.f3! Bh5 2.g4 e3 3.Rd1 Bf7 4.b4 e2 5.Re1 Rxd4
>>  -+  (-2.66)   Depth: 15/40   00:42:14  1841019kN
>>1.f3 Bh5 2.g4 e3 3.Rd1 Bf7 4.b4 e2 5.Re1 Rxd4 6.Qc2+
>>  -+  (-2.66)   Depth: 16/42   00:59:57  2619083kN
>>1.f3--
>>  -+  (-2.97)   Depth: 17/42   01:45:08  4599019kN
>>
>>(Blass, Tel-aviv 16.09.2001)
>>
>>Uri
>
>Look at the eval at the top.  That's from Deep Fritz on my 2x1.4Ghz.
>
>In :54 seconds gxf4 fails low.  And 10 minutes later, DF still hasn't found f3.
>
>
>
>Slate

In this case your Deep Fritz is only slightly faster than
PIII800
Your Deep Fritz on 2*1.4GH

1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Qf2 Bd5 6.Rd1 Kg6
  -+  (-1.78)   Depth: 14/34   00:03:06  176328kN

For comparison my Deep Fritz on pIII800

1.gxf4 Qxf4 2.Qe3 Rg5+ 3.Kh1 Qg4 4.f4 exf3 5.Qf2 Bd5 6.Rd1 Kg6
  -+  (-1.78)   Depth: 14/35   00:04:39  199152kN

I do not understand the reason that your Deep Fritz cannot see
more than 1000 Knodes per second because I expect Deep Fritz on
2*P1.4GH to be more than twice faster than pIII800.
If deep Fritz used only one processor then it can explain
the result.

Uri



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