BGonline.org Forums

Higher-number-first corollary

Posted By: Nack Ballard
Date: Monday, 28 November 2011, at 9:12 p.m.

In Response To: Nactation questions — Correction (Taper_Mike)

Thanks, Mike, for your terrific job of answering Nactation questions! (I believe your only error in the last week was oversight of D = 14/9, and you quickly self-corrected it.)

Though it rarely matters, one detail that I'm not sure I ever mentioned at bgonline is that to determine the correct family, the higher of two numbers is played first when there is a legal alternative order reaching the identical position. When I finally return home in a couple of days and have a diagram-making tool, I'll follow up with an illustrated post, but I'm going to mention it now for the sake of Nactation programmers Mike and Matt. Examples are:

31P-63R-66B-61 played 15/8; The 6 is played first, so that portion by portion the move is 15/9/8 (therefore D), not 15/14/8 (Z).

31P-32S-33B-54 played 11/2: The 5 is played first, so the move is 11/6/2 (therefore A), not 11/7/2 (in the O family).

The purpose of this higher-number-first corollary is to maintain more capital letters (put more precisely: to avoid pushing family members down in the hierarchy due to plays being in two different area-families).

If playing the lower number first merely produces the same letter/family (which it nearly always does) or a non-identical position, the corollary is irrelevant or inapplicable. Finally, the corollary cannot occur with doublets (there is no higher number, obviously), so there is no strain on the complexity of four-portion moves.

Nack

Messages In This Thread

• 42P-51S-32
  Timothy Chow -- Friday, 25 November 2011, at 8:21 p.m.
  • 42P-51S-32
    Casper van der Tak -- Friday, 25 November 2011, at 8:34 p.m.
  • 42P-51S-32
    Stick -- Friday, 25 November 2011, at 9:14 p.m.
    • 42P-51S-32
      David Rockwell -- Friday, 25 November 2011, at 11:48 p.m.
      • Nactation questions
        Timothy Chow -- Saturday, 26 November 2011, at 12:07 a.m.
        • Nactation questions
          Stick -- Saturday, 26 November 2011, at 12:09 a.m.
        • Nactation questions
          Dmitriy Obukhov -- Saturday, 26 November 2011, at 2:07 a.m.
          • Nactation questions
            Taper_Mike -- Saturday, 26 November 2011, at 7:55 a.m.
            • Nactation questions — Correction
              Taper_Mike -- Saturday, 26 November 2011, at 8:07 a.m.
              • Higher-number-first corollary
                Nack Ballard -- Monday, 28 November 2011, at 9:12 p.m.
            • Nactation questions
              Timothy Chow -- Saturday, 26 November 2011, at 8:32 p.m.
              • Nactation questions
                Matt Ryder -- Sunday, 27 November 2011, at 6:52 a.m.
                • Nactation questions
                  Timothy Chow -- Sunday, 27 November 2011, at 6:44 p.m.
                  • Nactation questions
                    Matt Ryder -- Tuesday, 29 November 2011, at 4:40 a.m.
                • Nactation questions
                  Nack Ballard -- Monday, 28 November 2011, at 5:43 p.m.
                  • Nactation questions
                    Matt Ryder -- Tuesday, 29 November 2011, at 5:03 a.m.
              • Nactation: S/Z rehash, etc.
                Nack Ballard -- Monday, 28 November 2011, at 5:00 p.m.
                • Nactation: S/Z rehash, etc.
                  Timothy Chow -- Wednesday, 30 November 2011, at 7:05 p.m.
                  • Nactation and Zare's position
                    Nack Ballard -- Friday, 2 December 2011, at 12:43 a.m.
                    • Nactation and Zare's position
                      Timothy Chow -- Friday, 30 May 2014, at 3:37 p.m.
                      • Nactation and Zare's position
                        Nack Ballard -- Friday, 30 May 2014, at 8:53 p.m.
                  • Nactation: S/Z rehash, etc.
                    Matt Ryder -- Friday, 2 December 2011, at 7:19 a.m.
            • Nactation questions
              Nack Ballard -- Thursday, 1 December 2011, at 4:36 p.m.
            • Definition of T (sTack, Tower)
              Nack Ballard -- Thursday, 1 December 2011, at 5:21 p.m.
    • 42P-51S-32
      Taper_Mike -- Saturday, 26 November 2011, at 8:42 a.m.
      • 42P-51S-32
        Casper van der Tak -- Saturday, 26 November 2011, at 9:13 a.m.
  • 42P-51S-32
    Dmitriy Obukhov -- Friday, 25 November 2011, at 10:57 p.m.
    • 42P-51S-32
      Timothy Chow -- Friday, 25 November 2011, at 11:17 p.m.
  • 42P-51S-32
    neilkaz -- Sunday, 27 November 2011, at 7:04 p.m.
  • 42P-51S-32 GNU Rollout
    Stick -- Sunday, 27 November 2011, at 10:36 p.m.
  • 42P-51S-32 XG2 RO
    Dmitriy Obukhov -- Sunday, 27 November 2011, at 11:23 p.m.
    • 42P-51S-32 XG2 RO
      Timothy Chow -- Monday, 28 November 2011, at 3:21 p.m.
    • 42P-51S-32 and 31P-51S-32
      Nack Ballard -- Thursday, 1 December 2011, at 8:16 p.m.