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Subject: Re: What do you do in your qsearch?

Author: martin fierz

Date: 02:52:49 11/06/03

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On November 06, 2003 at 04:51:38, José Carlos wrote:

>  This position is easy, but interesting:
>
>[D]r2qk2r/pp3ppp/2pbpn2/4Nb2/PnBP2P1/2N1P3/1P3P1P/R1BQ1RK1 b kq g3 0 1
>
>  Black plays Ng4 with big advantage.
>  Anubis (complex qsearch) finds it in iteration 8, while Averno (simple
>qsearch) needs 12. Studying what the program was searching in qsearch in this
>position has been very interesting for me.
>  How does your program here?
>
>  José C.

I pick it up on ply 7 (but probably later than you because my program is
dog-slow!). but my program has lots of extensions, specially when it's something
king-related. i also generate checks in qsearch if that's what you mean with a
complex qsearch....

cheers
  martin

Muse 0.841 on P4 2.4GHz

FEN: r2qk2r/pp3ppp/2pbpn2/4Nb2/PnBP2P1/2N1P3/1P3P1P/R1BQ1RK1 b kq - 0 0
depth  eval  time      nodes  kN/s  QS  BR  NR 	pv
 1/14    33  0.20s       123    2.1 72  96   0 	d6e5 .
 2/16    39  0.44s       954    8.6 75  96  70 	b4c2 a1a2 .
 3/16    39  0.64s      2020    8.6 64  96  75 	b4c2 a1a2 d6e5 .
 4/19    41  0.95s     11071   27.3 58  95  88 	f5c2 d1f3 e8g8 f3h3 .
 5/21    44  1.34s     29075   42.8 49  94  91 	f5c2 d1e2 e8g8 g4g5 d6e5 .
 6/29    46  2.39s     90849   84.5 55  95  92 	f5c2 d1e2 e8g8 g4g5 f6d7 e5f3 .
 7/29    57  6.02s    367188  124.8 51  94  91 	f6g4 e5g4 d8h4 c3b5 c6b5 c4b5
e8e7 g4e5 .
 8/30    62  14.05s   1034613  137.5 46  94  93 	f6g4 e5g4 d8h4 h2h3 h4h3 g4e5
e8g8 a1a3 .
 9/30    99  37.45s   3425111  148.3 38  93  93 	f6g4 e5g4 d8h4 h2h3 h7h5 g4e5
f5h3 e3e4 h3f1 .
10/30   119  103.98s  10498260  154.4 35  94  93 	f6g4 e5g4 d8h4 h2h3 h7h5 c4e2
e8c8 g4h2 f5h3 f1e1 .



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