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Early Double 4s, FOUR SCORE Rollouts

Posted By: Nack Ballard
Date: Friday, 5 June 2015, at 2:03 a.m.

In Response To: Early Double 4s, FOUR SCORE Rollouts (Igor)

According to David Rockwell's rollouts -- which I'm using to study opening replies -- 41S-44 is also a three-score position (real, if I'm not mistaken).

Oops, right you are:

E for money, R for DMP, b for gammon save, and E for gammon go. The funny thing is that I know the plays by heart [except I remembered at DMP, that R beat E by only .003 (old rollout?) instead of the actual .005].

My thought process was something like, "E is best for money and go, which means only the best plays at the other two scores are unique. So it's a two-score position." Lol, basically I can't count to three. Somehow, I didn't similarly stumble when I pondered 54D-44 and 64S-44.

I did, nevertheless, test many positions (with Blue having the same setup as in the feature position) with White split to her 23pt, including her having a third checker back on various points, with different distributions, and with her sometimes owning her 11pt, 10pt, 4pt, 3pt or 2pt. The bust is not always the same, but the main advantage of placing a White checker on her 22pt is that its 6 is blocked when Blue makes his 9pt. Otherwise, the gammon-go play of making the 4pt from the four-checker 8pt (with C) is typically also best for money.

Nack

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