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Subject: Re: The Null Move Killer Killed (and an announcement)

Author: Omid David Tabibi

Date: 17:37:52 09/30/04

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On September 30, 2004 at 14:24:44, Stuart Cracraft wrote:

>On September 30, 2004 at 10:48:09, Omid David Tabibi wrote:
>
>>[D]4r1k1/p1qr1p2/2pb1Bp1/1p5p/3P1n1R/1B3P2/PP3PK1/2Q4R w - - bm Qxf4; id
>>"WAC.141";
>>
>>Falcon uses aggressive prunings, yet it finds the correct move instantly (0.06
>>seconds). I think having appropriate extensions is the important thing here.
>>
>>Falcon 2.5.2.11 on AMD Athlon(tm) 64 Processor 3200+, 1999MHz, 1024MB:
>>depth     time    nodes   nps  score  variation
>> 3/9      0.00       0k  581k  -2.62  1.g2f1++
>> 3/9      0.00       0k  788k  -2.14  1.g2f1 e8e2 2.f1g1
>> 4/15     0.00       2k 2086k  -2.44  1.g2f1--
>> 4/15     0.00       2k 2741k  -2.70  1.g2f1 e8e2 2.h1h2 g8f8
>> 5/17     0.00       5k 5151k  -2.40  1.g2f1++
>> 5/17     0.01       8k  544k  -2.17  1.g2f1 e8e2 2.h1h2 f4d3 3.c1h6 e2e1
>>                                      4.f1g2
>> 6/20     0.05      22k  499k  -2.47  1.g2f1--
>> 6/20     0.05      27k  605k  -2.56  1.g2f1 a7a5 2.h1g1 e8e2 3.c1c3 g8f8
>> 6/20     0.06      35k  571k  -2.55  1.c1f4++
>> 6/20     0.08      39k  509k  -1.87  1.c1f4++
>> 6/20     0.08      45k  577k  -0.07  1.c1f4++
>> 6/20     0.09      55k  597k   3.38  1.c1f4 d6f4 2.h4h5 g6h5 3.h1h5 f4h6
>>                                      4.h5h6 c7h2 5.h6h2
>> 7/21     0.25     145k  582k   3.68  1.c1f4++
>> 7/25     0.59     338k  569k   4.28  1.c1f4++
>> 7/27     2.08    1161k  558k   6.08  1.c1f4++
>> 7/34    20.55   11607k  564k  13.28  1.c1f4++
>> 7/35    65.14   39412k  605k  49.28  1.c1f4++
>> 7/37    82.27   51880k  630k     #6  1.c1f4 d6f4 2.h4h5 g6h5 3.h1h5 f4h6
>>                                      4.h5h6 c7h2 5.g2h2 d7d8 6.h6h8
>
>Omid -- do you search moves-that-check at the first ply of quiescence?

Yes, I use checks in quiescence.





>
>Stuart



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