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Nactations of 64S-21H-51

Posted By: Taper_Mike
Date: Saturday, 4 May 2013, at 2:59 a.m.

In Response To: Nactations of 64S-21H-51 (Timothy Chow)

Yes, it is certainly odd. Here is some more S weirdness for you.


1O ' '1O '5X '3X ' ' '4O

1X ' ' ' '5O '3O ' '1X5X
32S-64H-43, S (Split) = bar/21, 13/10
Position ID: 4HPwBSDgc/AAUQ Match ID: cIkRAAAAAAAA

1O ' '2X1O4X '2X ' ' '4O

1X ' ' ' '5O '3O '1O '6X
42P-43S-65R-64, S (Split) = 20/10
Position ID: mGfwAyDgc+IBIQ Match ID: cAkTAAAAAAAA

Source: BGO Msg. No. 134754

S and Z are areal (i.e., area-based) families. Membership is determined by the areas of the board where checkers are moved. In the case of S and Z, this occasionally yields the odd result that a “splitting” play does not split the rear checkers. 32S-64H-43 and 42P-43S-65R-64 (both diagrammed above) are typical examples.

Mike

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