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Old December 19th 04, 03:46 PM
Juha-Pekka Kettunen
 
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Default Missing function

http://www.cs.biu.ac.il/~davoudo/pubs/blockage2.pdf

How many programs have this bockage detection at the moment (Junior 9?)?


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Old December 20th 04, 05:03 PM
alter ego
 
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It's an interesting document. But I wonder about this code in it:

int search(alpha, beta, depth) {
// blockage detection
if (beta DRAW) {
if (blockage()) {
if (alpha = DRAW)
return DRAW;
beta = DRAW;
}
}
// continue regular search
.. . .
}

Why only detect blocked positions if (beta DRAW)? Why not always and
maybe get a beta cutoff?
Maybe too costly.

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Old December 21st 04, 03:13 PM
Marcel van Kervinck
 
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Juha-Pekka Kettunen d wrote:
http://www.cs.biu.ac.il/~davoudo/pubs/blockage2.pdf


How many programs have this bockage detection at the moment (Junior 9?)?


Rookie had the static blockage theme in, I think, in 1998 in the DOCCC.

Marcel
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