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64S-64X-22, 64S-41X-22, 63S-64X-22, 63S-41X-22: summary (money and GG)

Posted By: Nack Ballard
Date: Wednesday, 7 December 2011, at 3:27 a.m.

Details of the money rollouts (XG and Snowie) are in various posts of this thread. The details of the (gammon) go rollouts (in blue nacbracs) are in this post. For immediate reference, the four positions are also diagrammed at the bottom of this post.

    64S-64X-22 [P E15 M20] "<=5
    ................. g[M P12] "<20

    64S-41X-22 [M P9 E22 e24 m30 H35] "<=38*5, [M P7] "<=10
    ................. g[M P30] "<5

    63S-64X-22 [H m8 M18] "<=10, [H m15 M22 P46 e79] ~5
    ................. g[M m12 H18] "<20

    63S-41X-22 [H M6 m19] "<10*5, [H M20 m39 P52 e53 E76] ~5
    ................. g[M H22] "<20

Key: H = Hit (bar/23 24/18*), P = Point (bar/23 8/6 6/4(2), M = Mayfair split (bar/23 13/11 6/4(2)), m = mayfair split (bar/23 10/8 6/4(2)) or bar/23 9/7 6/4(2)), E = Each (bar/21 6/4(2)), e = each (bar/23 24/22 6/4(2)). Margins are in thousandths. After brackets, "<= is XG2 3-ply with roller cube, or ~ is Snowie (results in green font).

I no longer have my Snowie rollouts of the first two positions; as I recall, M was tied for 64S-41X-22 but P finished a few thousandths ahead -- XG is more M-friendly. M is clearly the best play at gammon go in all four positions.

Nack


1O ' ' ' '5X1X3X ' ' '4O

1X ' ' '1X5O '3O1O ' '4X

64S-64X-22



1O ' ' ' '5X1X2X ' ' '4O

1X ' ' '1X5O '3O1O ' '5X

64S-41X-22



1O ' ' ' '5X1X3X ' ' '4O

1X ' ' '1X5O '3O '1O '4X

63S-64X-22



1O ' ' ' '5X1X2X ' ' '4O

1X ' ' '1X5O '3O '1O '5X

63S-41X-22


 

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