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Subject: Value of 2-bit tables

Author: guy haworth

Date: 10:41:57 01/29/01

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Rob

My thoughts were that:

  a)  2-bit tables are 1/4 the size before compression

  b)  compression is far more effective (as noted by the other reply)
          especially as 'broken' positions need not be marked as such
          they could 'falsely' be given the previous unbroken's value
          this improves the compression a bit more

  c)  you only go to the DTZ/DTR (DTC/DTM) tables on value-preserving moves
          and maybe you get an 'optimal' in half the time or less

You only have to have the '2-bit' and '8-bit' tables in play (in or near RAM)
for the relevant (sub-)endgame, taking into account P-positions, B-colour and
K-positions.

Have I missed anything?

G



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