
Because of the fact that the Principal Variation can be extracted from the Transposition Table if one wanted to, I was wondering about something. If you search the PV, ply by ply ("walking the PV"), you're actually searching hash table moves. So, if I collect a PV, and ALSO have a hash table, is it still necessary to do a principal variation search if I search the hash move first?
I may be misunderstanding this, but as I understand it now, it seems "walking the PV" (and thus, principal variation search?) seems pointless if you have a hash table. I've also seen references to "walking the PV is like having a poor man's TT", but I don't know where I read that quote. If true, it would seem to confirm my suspicion.
I could use a bit of assistance in determining if PVS is still helpful even if you have a TT.