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Subject: Re: Simple quad-opteron test

Author: Vincent Lejeune

Date: 09:22:01 12/04/03

Go up one level in this thread


On December 04, 2003 at 02:27:35, Vincent Lejeune wrote:

>On December 03, 2003 at 15:54:45, Tord Romstad wrote:
>
>>On December 03, 2003 at 14:59:03, Robert Hyatt wrote:
>>
>>>=====================10 seconds per position========================
>>>test results summary:
>>>
>>>total positions searched..........         300
>>>number right......................         299
>>
>>That's really impressive, even considering the fast hardware.  The last
>>time I tried, I got 289/300 at 1 second/position, 293/300 at 3 seconds,
>>294/300 at 5 seconds, 295/300 at 10 seconds, and 298/300 at 20 seconds.
>>
>>The remaining two positions, number 100 and 230, are *never* solved.
>>I can let my program analyse for hours, but it still doesn't find
>>the solutions.  In both positions, it thinks it is winning, but
>>never finds the right moves.
>>
>>In number 100, Gothmog switches back and forth between Be3 and Kb3, both
>>with a score around +4.  In number 230, it plays Rh7 with a score around
>>+3.3.
>
>Hiarcs 9,5 best moves after 8h of thinking on an AMD barton 2800+ :
>WAC.230
>2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 b - - 0 1
>
>Analysis by Hiarcs 9:
>
>1. -+ (-1.82): 1...Th7 2.Tb1 a4 3.Fa3 Th5 4.f4
>2. -+ (-1.82): 1...a4 2.Fa3 Th7 3.Tb1 Th5 4.f4
>3. -+ (-1.82): 1...Tf7 2.Fa3 Th7 3.Tb1 Th5 4.f4 a4 5.Ta1 Fb7 6.Fb2 Rb5 7.Te1 Th8
>8.Rg2
>4. -+ (-1.82): 1...Tg7 2.Fa3 Th7 3.Tb1 Th5 4.f4 a4 5.Ta1 Fb7 6.Fb2 Rb5 7.Te1 Th8
>8.Rg2
>5. -+ (-1.82): 1...Td7 2.Fa3 Th7 3.Tb1 Th5 4.f4 a4 5.Ta1 Fb7 6.Fb2 Rb5 7.Te1 Th8
>8.Rg2
>

moves 1...Rb4 2.Cxb4 a4 played analysis after 10h, searching only THE best move,
Hiarcs 9 don't find a winning sequence !!
Is Rb4 really winning ???


[d]2b5/8/2kBp1p1/3pP1P1/pPpP4/1p4K1/1R3P2/8 w - - 0 1

Analysis by Hiarcs 9:

3.Rf4 c3
  +-  (1.88)   Profondeur: 1/2   00:00:00
3.Rf4 c3
  -+  (-1.46)   Profondeur: 2/3   00:00:00
3.Rf4 c3
  -+  (-1.46)   Profondeur: 2/3   00:00:00
3.b5+ Rxb5 4.Tb1
  ³  (-0.49)   Profondeur: 2/3   00:00:00
3.b5+ Rxb5 4.Tb1
  ±  (0.96)   Profondeur: 2/3   00:00:00
3.b5+ Rxb5 4.Tb1
  ±  (0.74)   Profondeur: 3/4   00:00:00
3.b5+ Rxb5 4.Tb1
  =  (0.18)   Profondeur: 4/5   00:00:00
3.b5+ Rxb5
  =  (0.18)   Profondeur: 4/5   00:00:00
3.b5+ Rxb5
  =  (-0.08)   Profondeur: 5/7   00:00:00
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4
  -+  (-1.46)   Profondeur: 5/7   00:00:00
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4
  µ  (-1.17)   Profondeur: 6/14   00:00:00
3.b5+ Rxb5
  µ  (-1.17)   Profondeur: 6/14   00:00:00
3.b5+ Rxb5
  -+  (-1.46)   Profondeur: 7/14   00:00:00
3.b5+ Rd7
  -+  (-1.46)   Profondeur: 7/14   00:00:00  1kN
3.b5+ Rd7
  µ  (-1.17)   Profondeur: 8/17   00:00:00  2kN
3.b5+ Rxb5
  µ  (-1.17)   Profondeur: 8/18   00:00:00  3kN
3.b5+ Rxb5
  -+  (-1.46)   Profondeur: 9/18   00:00:00  3kN
3.b5+ Rxb5
  -+  (-1.46)   Profondeur: 9/18   00:00:00  5kN
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4
  -+  (-1.46)   Profondeur: 10/18   00:00:00  8kN
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4
  -+  (-1.46)   Profondeur: 11/18   00:00:00  15kN
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4
  -+  (-1.46)   Profondeur: 12/19   00:00:00  30kN
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4
  -+  (-1.46)   Profondeur: 13/26   00:00:01  491kN
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4 Rxd4 7.f3 Fa6 8.Tb2 c2
  -+  (-1.65)   Profondeur: 14/36   00:00:55  17715kN
3.b5+ Rxb5 4.Tb1 c3 5.Fa3 Rc4 6.Rf4 Rxd4 7.Th1 Rd3 8.Tb1
  -+  (-1.74)   Profondeur: 15/40   00:03:18  63121kN
3.b5+ Rxb5
  -+  (-1.82)   Profondeur: 16/43   00:10:18  201292kN
3.b5+ Rxb5
  -+  (-1.82)   Profondeur: 17/44   00:36:44  706477kN, tb=4
3.b5+ Rxb5
  -+  (-1.82)   Profondeur: 18/49   01:37:44  1930751kN, tb=13
3.b5+ Rxb5
  -+  (-1.82)   Profondeur: 19/51   04:43:24  5639009kN, tb=88


>
>>
>>What tricks do you use which helps you solve WAC100 and/or WAC230?
>>
>>And, I *REALLY* hope you're *NOT* planning to use that machine at CCT6,
>>because I'm probably going to be there with my PIV 2.4 GHz, searching
>>less than 200 kn/s ...   :-)
>>
>>Tord



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