Author: José Carlos
Date: 14:06:14 05/09/02
Go up one level in this thread
On May 09, 2002 at 16:50:24, Uri Blass wrote:
>On May 09, 2002 at 14:35:30, José Carlos wrote:
>
><snipped>
>> You said:
>>
>>"I think that the most important knowledge for amateurs is search knowledge and
>>the proof is that a lot of program without that knowledge are clearly better
>>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>than Averno."
>>
>> But then you didn't mention "a lot" and you're not sure they don't know about
>>opposition, so the "proof" is not valid.
>> And you also said:
>>
>>"I did not check more programs but it seems that almost nothing can see based on
>>2 plies search that Qg5+ is better for white."
>>
>> Something can be seen, and very easily, BTW. In two plies (with the check
>>extensions), it can be seen that Qg5+ Qxg5+ Kxg5 Kg3! is better for white
>>because of opposition.
>> The fact that Junior can't see it doesn't mean that no one else can see it.
>>It's just Junior that doesn't have the knowledge. Of course, Junior is a very
>>good program in many other areas, but that doesn't mean it doesn't have defects.
>>
>> José C.
>
>I did not say that programs do not have defects.
>
>I believe that more than 90% of the programs have the defect of not considering
>opposition in their evaluation
>
>I tried shredder5.32 on p200 and you can see that it also does not have the
>knowledge and in the first plies it likes Qg5+ and does not see Kg3 in the main
>line.
>
>I also plan to continue to have this defect in the evaluation of my program at
>least in the next year because I do not consider it as important.
It's a pity because it is very easy to implement. Took me about 30 seconds to
write the code:
// Oposición (en principio, sólo me importa si no hay peones pasados)
if (!uPasadosB && !uPasadosN)
{
uDifReyes=abs(PosActual->PosRey[BLANCAS]-PosActual->PosRey[NEGRAS]);
switch (uDifReyes)
{
case 32: // Vertical
case 64: // Vertical distante
case 34: // Diagonal A8-H1
case 68: // Diagonal A8-H1 distante
case 2: // Horizontal
case 4: // Horizontal distante
case 30: // Diagonal A1-H8
case 60: // Diagonal A1-H8 distante
nEvPos+=(PosActual->Turno==NEGRAS) ? BONUS_OPOSICION : -BONUS_OPOSICION;
break;
}
}
I admit it's not _very_ important, but it's soooo easy to implement...
José C.
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