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41S-21S-51S-42P-64, and simplified variants

Posted By: Nack Ballard
Date: Wednesday, 9 April 2014, at 8:52 p.m.

In Response To: 41-21-51-42-64? Or lots of options (Keene)





White is Player 2

score: 0
pip: 164
Unlimited Game
Jacoby Beaver
pip: 160
score: 0

Blue is Player 1
XGID=-aa---E-D---dDa--c-e--A-A-:0:0:1:64:0:0:3:0:10

52S-21S-64


Some time ago, I studied a set of positions that are very similar to the one you just posted. The most basic of these is 52S-21S-64, diagrammed above, which caught my fancy because of the 64 triplication. As I recall, H (Hit, 24/14*) is best, P (Point, 8/2* 6/2) is close (or very close?), and @ (anchor, 24/18 22/18) is a borderline blunder.

I found it a bit surprising that additionally giving White her 2pt (64P-52S-21S-64) has little impact. The ranking of moves is still H, P, @, and the margins don't change substantially.

Giving White her 4pt (42P-52S-21S-64), though, catapults @ into first place, solidly ahead of H, and I think P is a whopper. [Taking the theme still further, give White her 5pt (31P-52S-21S-64), and maybe H = whopper and P = double-whopper.]

Keene's position (diagrammed below) is the same as the one I just mentioned in the previous paragraph (42P-52S-21S-64), except that Blue has an additional 13/9 (from having played 41S+51S instead of simply 52S), but whatever effect the 9pt checker has, it shouldn't argue against @ on balance. There is also a 𤃁 score (instead of unlimited/money), but I can't imagine that would swing the play either. In conclusion, I feel certain that @ is the best move.

Nack





White is Player 2

score: 2
pip: 158
5 point match
pip: 156
score: 0

Blue is Player 1
XGID=-aa---E-DA--dCa--b-d-bA-A-:0:0:1:64:0:2:0:5:10

41S-21S-51S-42P-64


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