EW play weak NT.
Auction
W N E S
[1N] P [P] 2C*
[P]** 2H [P] 2S***
[P] ??****
* 2C = both majors. Alerted by N.
** West asked about 2C. Described as above.
*** 2S - a bidding mishap, or is S showing a strong hand with better S than H. Forcing.
**** Partner didn't show much reaction to description of 2C bid, but N is pretty confident at this point that South has had a bidding mishap. [She usually plays 2C = single suited major, and 2D for both majors].
What is North's responsibility?
Questions
1 - May North pass 2S?
2 - If North passes is she "fielding"?
3 - What would a director rule if 2S is passed?
4 - Even if ok for North to pass is it ethical for North to bid 3H as if pard has shown a strong hand with both majors?
The Consequence
North (me) decided ethical to bid 3H. South bid 3S. I decided at this point it seemed reasonable to pass. Bidding error exposed and evident to all.
3S-2 for bottom score.
Partner not happy. Said I should just pass 2S.
I thought ethically that I shouldn't but don't really know..... Hence the post. I'd like to know what I should do next time. [No doubt there will be a next time sometime!]
I'm interested to hear your answers to my questions.

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