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Subject: Re: oops! that was the 3rd position. #2:

Author: Peter McKenzie

Date: 22:37:46 06/15/02

On June 16, 2002 at 00:15:48, Christophe Theron wrote:

>On June 15, 2002 at 21:20:17, Peter McKenzie wrote:
>
>>On June 15, 2002 at 21:14:39, Mike S. wrote:
>>
>>>P3/700, 96 MB hash, CB-Tigers
>>>
>>>Analysis by Gambit Tiger 2.0:
>>>
>>>1...Be6 2.a4 Bd7 3.Rd1 Bf8 4.Qf4 Bg7
>>>  =  (-0.20)   Depth: 7   00:00:00  70kN
>>>  =  (-0.02)   Depth: 7   00:00:01  310kN
>>>1...Bd7 2.Rd1 Bc5 3.Qf4 Be6 4.Nf3
>>>  =  (-0.08)   Depth: 7   00:00:02  366kN
>>>1...f6 2.f4 Bf5 3.Bxf5 Nf7 4.Rxe8+ Rxe8 5.Qh4 gxf5 6.Nf3 Bc5+ 7.Kf1 Kg7 8.Qg3+
>>>Kf8
>>>  =  (-0.10)   Depth: 7   00:00:03  577kN
>>>  =  (0.08)   Depth: 11   00:00:32  5336kN
>>>1...Be6 2.Qh4 Rac8 3.Nf1 Qb6 4.Ne3 Bb8 5.Bd2 Nc4 6.Nxc4 dxc4
>>>  =  (0.02)   Depth: 11   00:01:43  16645kN
>>>1...b5 2.Rd1 b4 3.Nb1 Rb8 4.Ba4 Nc6 5.cxb4 Rxb4 6.Bb3 d4
>>>  =  (-0.02)   Depth: 11   00:02:54  28306kN
>>>  =  (-0.02)   Depth: 11   00:02:54  28306kN
>>>
>>>-----
>>>
>>>New game
>>>r1b1r1k1/ppq2p1p/3b2pQ/3pn3/8/2P4P/PPBN1PP1/R1B1R1K1 b - - 0 1
>>>
>>>Analysis by Chess Tiger 14.0:
>>>
>>>1...Bd7 2.Rd1 f5 3.Bb3 Bc6 4.Nf1 Nf7
>>>  ³  (-0.26)   Depth: 6   00:00:00  67kN
>>>  =  (0.02)   Depth: 7   00:00:00  118kN
>>>1...Be6 2.Rd1 f6 3.Nb3 Nf7 4.Qh4 Bh2+ 5.Kh1 Be5 6.Be3
>>>  =  (-0.14)   Depth: 7   00:00:02  391kN
>>>  =  (0.00)   Depth: 9   00:00:08  1256kN
>>>1...b5 2.Rd1 b4 3.Nb1 Ba6 4.Qg5 d4 5.Ba4 Be7 6.Qf4 dxc3 7.Bxe8 Rxe8 8.bxc3 bxc3
>>>  =  (-0.04)   Depth: 9   00:00:23  3574kN
>>>  =  (0.02)   Depth: 10   00:00:35  5100kN
>>>1...Be6 2.Rd1 b5 3.Nf1 f5 4.Ne3 Nc4 5.a4 Bf8 6.Qg5 Be7
>>>  =  (-0.02)   Depth: 10   00:00:39  5707kN
>>>  =  (0.02)   Depth: 11   00:01:13  11074kN
>>>1...f6 2.Qh4 Qf7 3.f4 Nc6 4.Rxe8+ Qxe8 5.Nf3 Bd7 6.Qf2 Qf7 7.Be3 Re8
>>>  =  (0.00)   Depth: 11   00:02:12  20588kN
>>>1...f5 2.f4 Bf8 3.Qh4 Be7 4.Qg3 Nc4 5.Nxc4 dxc4 6.Be3 Bd7 7.Qf3
>>>  =  (-0.02)   Depth: 11   00:02:55  26127kN
>>>  =  (-0.02)   Depth: 11   00:02:55  26127kN
>>>
>>>IOW, not in 3 minutes on this computer.
>>
>>Thanks Mike, the result was as I suspected :-)
>
>
>
>I don't know what you suspected but I have news for you: the latest Chess Tiger
>finds Bf5 (on fail high) in 64 seconds on my P4-1.6GHz (96Mb hash).
>
>Just out of curiosity: what did you suspect???

I suspected that Tiger would be a bit slow on this position (relative to the
other strong programs that is).  I figured its pruning would have some trouble
with this particular case...

>
>
>
>    Christophe

Re: oops! that was the 3rd position. #2: Christophe Theron 09:47:37 06/16/02
- Re: oops! that was the 3rd position. #2: Peter McKenzie 16:21:27 06/16/02
  - Re: oops! that was the 3rd position. #2: Christophe Theron 21:43:31 06/16/02
- Re: oops! that was the 3rd position. #2: Mike S. 10:26:42 06/16/02
  - Re: oops! that was the 3rd position. #2: Christophe Theron 11:12:43 06/16/02
    - Re: oops! that was the 3rd position. #2: Mike S. 13:51:50 06/16/02
      - Re: oops! that was the 3rd position. #2: Christophe Theron 21:44:46 06/16/02
Re: oops! that was the 3rd position. #2: Uri Blass 02:45:24 06/16/02

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