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Hidden lesson

Posted By: Chuck Bower
Date: Tuesday, 17 February 2009, at 5:34 p.m.

In Response To: History (Chuck Bower)

(Ramblings continue. :)

I rolled this out with GNU-bg 2-ply (not going to post that particular result) and it was in the 0.08-0.09 range as an ND. One thing I noticed (yellow flag) was how different the (estimated) cubeless wins were on the hold-2-cube vs. take-4-cube paths. Then I started rollouts of positions after hitting and comparing GNU-bg's eval to those rollout results.

2-ply eval was off by a ton on many positions, as much as 0.4 (quad whopper). Of course it undervalued Blue's side after getting hit which means that it would take as White, after getting hit, in situations which were clear (according to it's own rollouts) passes.

This is similar to real BG (human vs. human) where if you know (or strongly believe) opp will take on his next opportunity, even if you improve to a cash, you won't have lost your market at all in a practical sense so you are better off not doubling.

Penultimately I looked at GNU-bg 3-ply evals after Blue hits and those were much closer to the 2-ply rollout results. Finally I just ran two rollouts of the original position, both with 2-ply checkerplay, one with full 3-ply cube and one with 3-ply cube for 5 rolls and 2-ply cube after that ("stepped"). Those results in the next post.

Messages In This Thread

• More lessons here than meet the eye
  Chuck Bower -- Sunday, 15 February 2009, at 4:15 p.m.
  • More lessons here than meet the eye
    pontiac -- Sunday, 15 February 2009, at 5:06 p.m.
    • More lessons here than meet the eye
      neilkaz -- Sunday, 15 February 2009, at 5:06 p.m.
      • More lessons here than meet the eye
        pontiac -- Sunday, 15 February 2009, at 6:02 p.m.
    • More lessons here than meet the eye
      Dan Pelton -- Sunday, 15 February 2009, at 6:01 p.m.
  • More lessons here than meet the eye
    Martin -- Sunday, 15 February 2009, at 5:17 p.m.
  • More lessons here than meet the eye
    David Rockwell -- Sunday, 15 February 2009, at 6:05 p.m.
    • More lessons here than meet the eye
      neilkaz -- Sunday, 15 February 2009, at 6:29 p.m.
    • More lessons here than meet the eye
      DanielP -- Monday, 16 February 2009, at 11:32 a.m.
  • More lessons here than meet the eye
    Jason Lee -- Sunday, 15 February 2009, at 10:30 p.m.
  • More lessons here than meet the eye
    David Rockwell -- Sunday, 15 February 2009, at 11:04 p.m.
  • More lessons here than meet the eye
    garyo -- Monday, 16 February 2009, at 3:39 a.m.
  • More lessons here than meet the eye
    Rich Munitz -- Monday, 16 February 2009, at 6:46 p.m.
  • More lessons here than meet the eye
    Matt Cohn-Geier -- Monday, 16 February 2009, at 7:55 p.m.
    • History
      Chuck Bower -- Tuesday, 17 February 2009, at 5:07 p.m.
      • History
        Stick -- Tuesday, 17 February 2009, at 5:16 p.m.
        • History
          neilkaz -- Tuesday, 17 February 2009, at 5:38 p.m.
          • History
            Stick -- Tuesday, 17 February 2009, at 6:07 p.m.
          • History
            Matt Cohn-Geier -- Tuesday, 17 February 2009, at 6:23 p.m.
            • History
              MFIC -- Thursday, 19 February 2009, at 1:51 a.m.
              • History
                Matt Cohn-Geier -- Thursday, 19 February 2009, at 2:42 a.m.
              • History
                Stick -- Thursday, 19 February 2009, at 4:38 a.m.
                • History
                  Rich Munitz -- Thursday, 19 February 2009, at 5:15 a.m.
            • History
              neilkaz -- Thursday, 19 February 2009, at 4:47 a.m.
              • History
                Matt Cohn-Geier -- Thursday, 19 February 2009, at 5:08 a.m.
        • History
          Chuck Bower -- Tuesday, 17 February 2009, at 5:44 p.m.
          • History
            Stick -- Tuesday, 17 February 2009, at 6:06 p.m.
      • Hidden lesson
        Chuck Bower -- Tuesday, 17 February 2009, at 5:34 p.m.
        • two (3-ply cube) RO results
          Chuck Bower -- Tuesday, 17 February 2009, at 5:41 p.m.
          • After 64 then dance
            neilkaz -- Tuesday, 17 February 2009, at 8:29 p.m.
        • Hidden lesson
          David Rockwell -- Tuesday, 17 February 2009, at 6:55 p.m.