It seems that most people agree on penalty.
That is exactly what I thought it should be at the table (and I still think that it should be so, here).
My partner was a local "expert" and not only was this the first time I played with him (and not by choice, really, but as a favor to my grandfather), we barely spoke the same language (my hebrew is very rusty, and he didn't speak english) so needless to say, this session was an adventure.
He decided to pull my double, holding
♠Qxx
♥ Jxx
♦ Jx
♣ QT9xx.
He bid 3
♣, and I couldn't IMAGINE it being to play (I already showed shortness in clubs). I held
♠Axx
♥ KQTx
♦ KQT9
♣ Jx, so (for your amusement) the final bidding was:
RHO ... me ... LHO ... pard
(1♣) ... x ... (p) ... pass
(2NT)... x ... (p) ... 3
♣
(p) ... 3
♦ ...(p) ... p
(x) all pass.
Clearly partner thought that I had long diamonds, and hence didn't correct to hearts. equally clearly, diamonds didn't do so well, but then again, hearts wouldn't have, either. I guess we needed to play 3
♣ (which didn't get doubled) but how was I to know that?