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1. Did you get unauthorized information?
2. If yes, did you take advantage of the UI?
Sort of.
If pard asks the NT range before bidding and passes after hearing the 11-14 range, I expect that he has a shapely hand but nonconstructive: say something like KQxxx-x-QJ9xx-xx (yes I know some people do it with worse suits).
Vs strong NT, the overcalls are more nuisance-oriented than constructive oriented, so, vs a strong NT, pard would overcall his 2suiter;
But vs the weak NT, the system is geared towards bidding constructively, showing at least opening values (or equivalent playing strength), so with such a hand, pard would pass.
So, doubling in 4th seat vs weak NT with 10 hcp only becomes more a protective bid (if pard indeed has such a 2 suiter, probably there is a good partscore sac even in a doubled contract of 2 of a suit).
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3. Is it a clear double without the UI?
4. Is pass a logical alternative at this form of scoring?
In his excellent book on competitive bidding, Kaplan has a whole chapter on bidding vs weak and strong NT.
He writes that, in balancing seat vs weak NT, if anything, he requires a hand even stronger than doubling in direct seat, because opps value are sitting OVER his and pard will lead the wrong suit 8 times out of 10.
Perhaps this might be a little too much, yet, doubling with 10 hcp in 4th seat sounds crazy.
Therefore, I think that passing is not only a logical alternative, but *the most* logical bid, regardless of the form of scoring, unless there was UI.
"Bridge is like dance: technique's important but what really matters is not to step on partner's feet !"