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Well-played sequence to rereach opening position

Posted By: Nack Ballard
Date: Wednesday, 20 October 2010, at 4:29 p.m.

In Response To: Who Among Us Knows All There Is To Know About How To Play An Opening 32? (misja)

I consider a sequence in which all plays are either best, tied or "very close" (within .02 of best) to be well played: it passes the acceptability standard for one that could reasonably occur between experts. (If all plays must be best/optimal, I call it "perfect.")

About thirty years ago, I devised this short, well-played sequence that rereaches the opening position:

62S-41X-43H-61H-51R-51L

In traditional notation, that translates to:

(1) 62: 24/18 13/11 ... 41: 24/20 8/7
(2) 43: Bar/18* ... 61: Bar/18*
(3) 51: Bar/24 24/13 ... 51: 14/8

(I also discovered that if one misplay is allowed, the sequence can be shortened to five rolls; and that re-rereaching the opening position with only one good play can be done in four rolls.)

According to agg (bot aggregate value), 41X is tied at -.008, and I believe it is currently played more often than 41H. I never got around to rolling out the final play, 51L, but the eval is -.004 (GnuBG) or -.015 (Snowie). Even if 51L turns out to be worse than -.02, it wouldn't be hard to fix.

If such a short well-played sequence can be constructed, it shouldn't be much more difficult to make it "perfect," if I felt like spending the time to accommodate that standard.

Nack

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