East doubles. Your call. What do you do?
At the table, I passed. Partner should be able to make 5D and I do have a good card for him. Partner did make his contract ... with two overtricks! But 5DX with 2 overtricks is still less points than the minor suit slam. So, it was only an average-plus board.
Partner doubled because he has at least two places to play (with a strong single-suiter, he would have just bid 4D or 5D). As long as East was not psyching, his two places to play are the minors. 4NT might have been more descriptive than the initial double, but partner was probably concerned about losing all that bidding space. I should bid 6C now. A doubled game with overtricks is still not worth as much as a slam. Just because they double you in a game contract doesn't mean you stop trying for slam.
The full hand (no I don't know what east was thinking with his bids either), but he did keep us out of slam: