Posted 2013-October-04, 08:22
Double.
I find partner's sequence more than a little strange, but the opponents seem to believe him. He is not bidding 6♣ as a sacrifice at this vulnerability.
Whatever partner needs for a grand slam I don't have. And the opponents are not making slam (or, if they are, we are not getting many matchpoints anyway).
As for the question of my action over 5♠, I would have passed, thinking I had a good hand for my bidding to this point.
By the way, I just hate it when partner has a strong hand and leaps multiple levels in the auction, and then pushes a high level bidding decision over to you. How in the world can you make an informed decision when partner has gone out of his way to provide you with no useful information?