North East South West
-- ..... 2♠ ... 2NT .... 3♠
X ....... P....... P ....... P
I was South and passed my Partner's X taking it as a penalty X. My understanding was that any Double opposite a hand that has bid NT is a penalty double.
My partner was of the opinion that a double after a weak 2 bid that has been bid and supported cannot be penalty as there is no way to find a 4 - 4 heart fit at the 4 level, if the double here is treated as penalty. His understanding was that Doubles after a 9 card fit has been established cannot be a Penalty Double.
Our Opps were down 1 when we had a cold 9 tricks in 3NT available. This board turned out to be bad for us because of this misunderstanding.
My questions:
1) What is the expert treatment here in this sequence?
2) How do we find a 4-4 heart fit, if this sequence is penalty?
3) When is a double penalty in these type of sequences?
Godwin

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