which technic next to implement?

smatovic · Post by **smatovic** » Thu Mar 31, 2011 9:41 pm

null-move is not much code. You can do this in 10-20-30 lines depending on how you implement it.

yepp, you and Dann are right, 11 lines of code and + 2 ply depth

thx,
Srdja

smatovic · Post by **smatovic** » Thu Mar 31, 2011 9:44 pm

Do you store and retrieve the best move from hash?

yes, that works fine.

What exactly did not work about aspiration windows?

i think i implemented it correctly, but there is no decreasement of searched nodes to observe...maybe i have to take care of my PVS implementation with my ID-Framework.

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Srdja

marcelk · Post by **marcelk** » Fri Apr 01, 2011 2:48 pm

smatovic wrote: i think i implemented it correctly, but there is no decreasement of searched nodes to observe...maybe i have to take care of my PVS implementation with my ID-Framework.

That is normal: PVS and aspiration window are both fishing in the same pond. When you already have PVS, the aspiration window will not add as much anymore.

smatovic · Post by **smatovic** » Fri Apr 01, 2011 2:53 pm

That is normal: PVS and aspiration window are both fishing in the same pond. When you already have PVS, the aspiration window will not add as much anymore.

I understand,
btw: thanks for MSCP, it is a good teacher for understanding chess techniques.

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Srdja

Dann Corbit · Post by **Dann Corbit** » Fri Apr 01, 2011 4:20 pm

smatovic wrote:
That is normal: PVS and aspiration window are both fishing in the same pond. When you already have PVS, the aspiration window will not add as much anymore.
I understand,
btw: thanks for MSCP, it is a good teacher for understanding chess techniques.

--
Srdja

He also wrote a nice paper on chess programming.
http://alexandria.tue.nl/extra2/afstver ... ck2002.pdf

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