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Subject: Re: wow! My stupid program can find it!!

Author: Dieter Buerssner

Date: 10:30:10 07/24/02

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On July 24, 2002 at 02:43:21, Grzegorz Sidorowicz wrote:

>r1b1r1k1/1q3ppp/ppn5/2bNp3/P4B2/5Q1P/BP3PP1/R2R2K1 w - -
>
>Armageddon 2.139 on PII350MHz
>
>depth time    nodes       score   variation
>-------------------------------------------
[..]
>10    7.16    49661951    -73     f4e3 c8e6 a1c1 e8c8 e3c5 b6c5 d1d2 b7a7 d5c3
>e6a2
>10    9.46    65388959    -51     d5f6 g7f6 a2d5 c8d7 f4h6 c5f8 f3f6 f8h6 d5f7
>g8f8 f7e8 f8e8 d1d7 b7d7
>10    11.43   76350730    3       d5f6 g7f6 f4h6 c5f8 a2d5 c8d7
>11    13.7    85371759    0       d5f6 g7f6 f4h6 c5f8 a2d5 c8d7 f3f6 d7e6 d5c6
>b7c6 f6g5 g8h8 g5f6 h8g8
>
>Armageddon see only draw, but see Nf6! :)

Armageddon is much faster than Yace here. On comparable hardware, Yace by
default needs 23 minutes. One other interesting observation. When using
conventional piece values (1/3/3/5/9) and not any kind of "bad trade penalties",
this time is reduced to 3 minutes, in 4 minutes draw score, and in 20 minutes
around +0.8. This happens often in test positions, but in my tests, it makes the
engine weaker. It will however make the games more spectacular, because it will
see compensation to some piece sacs easier, and this will yield in a more
attacking style, that sometimes can give a short winning game.

Regards,
Dieter



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