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Subject: Strange PVS results??? Q->Bob Hyatt

Author: Bas Hamstra

Date: 13:00:23 12/08/98

Bob, I *try* to use PVS but get very strange results!

Here is what I do:

- At any node the first move is searched(a,b)
- The first move is PV[0][Depth] *if* legal, otherwise best capture
- Search rest (a, a+1)

Now if a value > a is returned it is *at least* a+1

Research that same move with (a,b)   a being *same* as above


Now I get *NO* value > a???????????

So *proven* value is at least a+1
And proven value is not greater than a

Something definitely wrong here. Can you point me to some pseudocode
for PVS? Looked at Crafty source, but too complex to quickly see through
all the extensions/null/futilities/razoring/delta's etc...


Regards,
Bas Hamstra.

• Re: Strange PVS results??? Q->Bob Hyatt Robert Hyatt 18:43:50 12/08/98
• Re: Strange PVS results??? Q->Bob Hyatt Don Dailey 15:36:21 12/08/98
  • Re: Strange PVS results??? Q->Bob Hyatt Will Singleton 16:41:45 12/08/98
    • Re: Strange PVS results??? Q->Bob Hyatt Don Dailey 18:09:47 12/08/98

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