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BGonline.org Forums
Nactation? Expert opinions please!
Posted By: Taper_Mike In Response To: Nactation? Expert opinions please! (Dmitriy Obukhov)
Date: Saturday, 14 April 2012, at 6:52 a.m.
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White is Player 1
score: 5
pip: 1267 point match pip: 161
score: 4
Blue is Player 2XGID=-bAbBBBBBB--a----babc-bB--:0:0:-1:41:5:4:0:7:3 Blue to play 41
Dmitriy nailed this one. All of his responses are spot on. Nice work!
S (Split) = Z (Reverse split) = 24/23* 13/9
In the S and Z families, one checker is moved on the the far side of the board, and the other is played from the far outer board into the outer board. When the larger die is played on the far side, and the smaller die into the outer board, the play belongs in the S (Split) family. Conversely, when the smaller die is played on the far side, and the larger die into the outer board, the play is nactated in the Z (Reverse split) family. A Convenience Clause allows you to use S instead of Z, when the regular S family is empty.In the given position, Dmitriy applied the Convenience Clause in assigning capital S to the only member of the Reverse Split family.
C (Cross) = 24/23* 7/3, c (cross) = 24/23* 8/4
Members of the C (Cross) family move one checker on the far side of the board, and jump over the bar (from the outer board to the inner board) with the other. Checkers move in the ratios Far:Down:Jump:Inside = 1:0:1:0.
The More Points Convention, the middle part of the Hit/More/Six Rule, gives preference to those plays that make or retain the largest number of points. Hence, the upper case letter goes to 24/23* 7/3 (because it retains the 8pt), and the lower case letter is left for 24/23* 8/4 (because it does not).
Mike
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