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Nactation question

Posted By: Taper_Mike
Date: Thursday, 19 January 2012, at 2:35 a.m.

In Response To: Nactation question (Nack Ballard)

64S-43Z-63 Nack has already given a perfect answer to Mochy’s Nactation question. He is much better than I am when it comes to identifying all the alternative Nactations in a given position. I’ve constructed tables for the C (Cross) and Z (Reverse split) families. I hope they help. Mike

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C (Cross)

Traditional Notation	Far 1	Down 0	Jump 1	Inside 0	Hits on These Points (more is better) (higher is better)	Owned Points Not Held by All Members in Family (more is better) (closer to 6pt is better)	Blot and Spare Destinations (closer to 6pt is better) (outer board: farther is better)	Nactation
24/18, 9/6	24/18		9/6			18pt	6pt*	C
24/18, 8/5	24/18		8/5			18pt*	5pt	c
18/15, 9/3	18/15		9/3				3pt* 15pt	C
18/15, 8/2	18/15		8/2				2pt 15pt	c

*This is the deciding criterion. The asterisk marks the reason under Hit/More/Six that a given row ranks above the row that follows it. Other criteria are either tied or irrelevant.

Definitions: B (Both), S (Split) and Z (Reverse split) Family Non-doublets Doublets B One die is played on the far side, and one die is played entirely within the outer board (on the near side). Two dice are played on the far side, and two dice are played down. S The larger die is played on the far side, and the smaller die is played into the outer board from the opponent's outer board. When no such play exists, S can also be used as an alternative to Z. Three dice are played on the far side, and one die is played down. When no such play exists, S can also be used as an alternative to Z. Z The smaller die is played on the far side, and the larger die is played into the outer board from the opponent's outer board. One die is played on the far side, and three dice are played down. In all of these definitions, “down” refers to, “A move made to or within the outer board. The checker must land in the outer board on the near side, but can be moved from any point in either outer board.” A play on the far side of the board means, “The entire move is made on the far side of the board, including entering a checker from the bar. The checker can land anywhere on the far side, from the midpoint on up.”

Z (Reverse split)

Traditional Notation	Far 1	Down 1	Jump 0	Inside 0	Hits on These Points (more is better) (higher is better)	Owned Points Not Held by All Members in Family (more is better) (closer to 6pt is better)	Blot and Spare Destinations (closer to 6pt is better) (outer board: farther is better)	Nactation
18/9	18/15	15/9				9pt*		Z
18/15, 13/7	18/15	13/7					7pt 15pt*	z
24/21, 13/7	24/21	13/7					7pt 21pt	Z

*This is the deciding criterion. The asterisk marks the reason under Hit/More/Six that a given row ranks above the row that follows it. Other criteria are either tied or irrelevant.

Messages In This Thread

• nactation question
  mochy -- Wednesday, 18 January 2012, at 4:45 p.m.
  • Nactation question
    Nack Ballard -- Wednesday, 18 January 2012, at 6:33 p.m.
    • Nactation question
      Taper_Mike -- Thursday, 19 January 2012, at 2:35 a.m.
      • Nactation question
        mochy -- Thursday, 19 January 2012, at 2:59 a.m.
        • Updated tutorial, prototype
          Nack Ballard -- Thursday, 19 January 2012, at 3:41 a.m.