kuhchung

I was completely stumped for a while until my friend told me, "it depends on your LHO." Then it dawned on me and I couldn't stop laughing. Thanks for sharing.

To clarify Roger's point, Serious 3NT is useful when both partners are unlimited in a game forcing auction. In this auction, opener has shown 12-14 balanced, so there is no need for Serious 3NT. Edit: I forgot to mention of course that it should be clear what major is trumps.

Hint: