Computer Chess Club Archives




Subject: Re: right now, at this very moment wac 141?

Author: martin fierz

Date: 15:20:45 09/29/04

Go up one level in this thread

On September 29, 2004 at 16:21:43, Uri Blass wrote:

>I think that it is clear that extending every nate threat by a full ply will
>blow your search.
>If you do not use partial extensions then I suggest that you do not extend mate
>threats unless  you have some conditions to extend them only near the root and
>not every where.

i extend mate threat by a full ply always. and my search isn't blowing up, at
least not that i notice. then again, WAC 141 shows some strange behavior with my
latest version:

MUSE 0.89.10 UCI 30 MB:

 1   00:00 -1.65   Kg2g1
 2+  00:00 -2.36   Kg2f1
 2   00:00 -2.36   Kg2f1 Nf4d3
 3   00:00 -1.22   Kg2f1 Re8b8 Kf1e1
 4   00:00 -2.13   Kg2f1 Kg8h7 Bb3d1 Nf4d3
 5   00:00 -2.16   Kg2f1 Re8e2 Kf1g1 Nf4d5 Kg1f1
 6+  00:00 -1.66   Qc1xf4
 6   01:24  M6  Qc1xf4 Bd6xf4 Rh4xh5 g6xh5 Rh1xh5 Bf4h6 Rh5xh6

it sees Qxf4 after 0 seconds (this is on a slowly 1.4GHz P4), but needs a very
long time to resolve it. but at least it sees Qxf4 in 0 seconds :-)


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