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XG 'Book' Moves - authoritative?

Posted By: Nack Ballard
Date: Wednesday, 11 October 2017, at 3:47 a.m.

In Response To: XG 'Book' Moves - authoritative? (Albert Steg)

I'll preface this post by pointing out that it is really only useful to compare "opening books" moves to each other, or ++ moves to each other, or 3-ply moves to each other, etc. Comparing book/ply equities to other-type book/ply equities can be misleading, and I always cringe when I see XG list them that way or see someone post them that way.

When I post equities, they're either all rolled out, or all of them are ++ evaluations, and anything else I don't show. Or occasionally, I'll display it with two diagrams; for example candidate A and B rolled out 4-ply, then in a separate diagram, A, B, C and D all rolled out 3-ply. That way, A can be compared to C (etc.) like apples to apples.

Like David, I have "Use Opening Books" turned off (unchecked) most of the time. When on occasion I want to consult XG book moves, I check Use Opening Books (under Options/Settings/Analysis), then go back and uncheck it again.

In the case of your 32Z-31P-31 diagram where the V (variant up, 22/18) book move mysteriously appeared, it is actually NOT a messaging error. It shows up because 31P-63S (the position actually rolled out by David) is mainstream and reaches the same position. Of course, that tidbit of information is useless to you because V is so weak compared to the other 32Z-31P-31 candidates, and you can't compare it to other 31P-63 candidates (like R).

Nack

P.S. I just noticed Albert beat my message to the punch.

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