Houdini 1.03 is available

[Matthias Gemuh]

Maybe http://www.110mb.com/ do not allow hot linking to images across domains with their free service.

I think so.
And T-Online asked for my password .

[Alex Lobanov]

Not sure that I entirely grasp the question, but you may find the answer in this interesting topic Larry Kaufman recently started: http://www.talkchess.com/forum/viewtopic.php?t=35458 .

not interest...

why eval houdini = (eval ippolit * 2) ?

[Houdini]

why eval houdini = (eval ippolit * 2) ?

That is simply not the case.

Robert

[Roger Brown]

Hi Roger,

Don't you think it is the claimer who should provide supporting evidence?

Cheers,

Hello Gabor,

Hmmmmm, I am sure that we have been around computerchess for more than a few years my friend.

In that time I have seen respected commercial engines released with all sorts of Elo improvement claims.

Usually it is the public who serve as testing guinea pigs and it is in the court of the public arena that harsh adjustments are made to those numbers.

At least here this engine is free.....

I would be hesitant to accept improvements by any claimant as gospel particularly when the author has made more modest claims.

Later.

[Alex Lobanov]

That is simply not the case.

from immortal:

Функция evaluate() - это sub_404AD0. Полный аналог Ипполитов, только все веса зачем-то умножены на 2. И конечно, в конце evaluate видим вызов эндшпильных функций:
mov eax, var_C
mov ecx, dword_8F2880[eax*4] ; массив указателей на функции
movzx edx, bl
push ebp
push edx
push esi
push 0
call ecx ; dword_8F2880

Пересчет выводимой оценки - это sub_41E7F0. В Робболито она называется cp_mate (файл search.c). Если воспользоваться HexRays и немного поредактировать, то в Гудини эта функция могла бы выглядеть так:

static char * cp_mate (int value, char *s)
{ if (value > VALUE_MATE - 1024)
sprintf (s, "mate %d", (VALUE_MATE + 1 - value) / 2);
else if (value < -VALUE_MATE + 1024)
sprintf (s, "mate %d", (-VALUE_MATE - value) / 2);
// else sprintf (s, "cp %d", value);
else {
if ( (unsigned int)(value + 899) > 1798 ) value = 16 * value;
else {
if ( value > -300 ) {
if ( value > -150 ) {
if ( value > 150 ) {
if ( value > 300 ) value = 2 * (9 * value - 900);
else value = 14 * value - 600;
}
else value = 10 * value;
}
else value = 14 * value + 600;
}
else value = 2 * (9 * value + 900);
}
sprintf(s, "cp %d", value / 32);
}
return s;
}

Не забываем, что value на входе в эту функцию - это почти всегда оценка Ипполита, умноженная на 2.

[Houdini]

Alex, this code is not part of Houdini 1.03.
On a general note, I'm not inclined to discuss disassembly code of people who try to speculate about the inner workings of Houdini by reverse engineering.
If you want to understand the evaluation philisophy behind Houdini I refer you to Larry Kaufman's thread http://www.talkchess.com/forum/viewtopic.php?t=35458 .

Cheers,
Robert

[Osipov Jury]

It is unfortunate that Robert did not want to answer uncomfortable questions.
This means that the source code will not be published.
And that the author builds a very definite ambitious plans. It remains to wish success to the author.

[Houdini]

My very definite ambitious plan is to continue to improve Houdini, thank you for your support.

Robert

[Sylwy]

It is unfortunate that Robert did not want to answer uncomfortable questions.
This means that the source code will not be published.
And that the author builds a very definite ambitious plans. It remains to wish success to the author.

Hello Jury !

No answers ?????


Frustrated( ) regards,
S I L V I A N

=======================================

Thank you ROBERT ! Houdini rules !

=======================================

[Alex Lobanov]

No answers ?????

You can continue to disassemble and will answer

Houdini = changed Ippolit and Ivanhoe

even the error "no move" came out from "ivanhoe"