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31P-64 and 61P-64

Posted By: Nack Ballard
Date: Monday, 19 April 2010, at 6:03 p.m.

In Response To: 31P-31P-31? (mtuhtan)

31P-64

61P-64

A few years ago, my opponent, who was a Giant (or in top 40, at least), played 31P-64P; in fact, he was in the non-playing chair and had to overrule his doubles partner to do it! (It was their first move of the match.) It's not terrible, though. The bigger surprise to me is that Hsiao-Yee whispered to me, "They should run, right?" (What does she need me for?)

At the same tournament, a top ten Giant played 31P-64S against me, slightly trailing in the match. This is close enough that it seems reasonable to chalk it up to stylistic preference.

The data I have for 31P-64 is

Snowie .. [R S14 P27] 20k
GnuBG .. [R P19 S21] 5k, d[R S3] 10k, g[S=P] 5k

and for 61P-64 is

Snowie .. [R P22] 20k
GnuBG .. [R P43] 5k, g[P R20] 5k

It's interesting that Snowie has 64P about the same error (slightly smaller actually) after 31P or 61P, whereas Gnu has it a much larger error after 61P, but those mere 5k rollouts can be fickle.

Nactation key: R = Run (24/14), P = Point (8/2 6/2), S = Split (24/18 13/9).

Error sizes are in thousandths of a point. Match score (d = DMP, s = GS, g = GG, else assume money) is listed before the bracket. Number of trials are in thousands ("k") after the bracket. For example, "g[P R20] 5k" means that at GG (gammon go), P is best and R is -.020, after 5000+ trials.

That said, Paul Weaver and I elected not to include 31P-64P-31 in our book because the 64P reply didn't make the "cut." More on that later.

Nack

Messages In This Thread

• 31P-31P-31?
  mtuhtan -- Monday, 19 April 2010, at 2:44 p.m.
  • 31P-31P-31?
    Casper van der Tak -- Monday, 19 April 2010, at 3:33 p.m.
  • 31P-31P-31?
    neilkaz -- Monday, 19 April 2010, at 4:34 p.m.
    • 31P-31P-31?
      David -- Monday, 19 April 2010, at 5:01 p.m.
    • 31P-31P-31?
      mtuhtan -- Monday, 19 April 2010, at 10:09 p.m.
      • 31P-31P-31 - Rollout
        mtuhtan -- Tuesday, 20 April 2010, at 1:32 p.m.
        • 31P-31P-31 - Rollout
          Timothy Chow -- Tuesday, 20 April 2010, at 2:25 p.m.
          • 31P-31P-31 - Rollout
            mtuhtan -- Tuesday, 20 April 2010, at 2:37 p.m.
  • 31P-31P-31?
    Nack Ballard -- Monday, 19 April 2010, at 4:47 p.m.
    • 31P-31P-31?
      mtuhtan -- Monday, 19 April 2010, at 5:07 p.m.
      • 31P-64 and 61P-64
        Nack Ballard -- Monday, 19 April 2010, at 6:03 p.m.
  • 31P-31P-31?
    Timothy Chow -- Monday, 19 April 2010, at 9:10 p.m.
  • 31P-xxP-31 comparisons
    Nack Ballard -- Wednesday, 21 April 2010, at 3:09 a.m.
    • Correction (31P-61P-31 and 31P-53P-11 in book)
      Nack Ballard -- Wednesday, 21 April 2010, at 8:13 a.m.
      • Correction (31P-61P-31 and 31P-53P-11 in book)
        Leonardo Jerkovic -- Thursday, 22 April 2010, at 10:03 a.m.
        • Error Scale terms
          Nack Ballard -- Friday, 23 April 2010, at 2:31 a.m.