Posted 2011-June-23, 12:52
1) and 2) I expect partner to have: at least 9 red cards (likely 5 diamonds - no 2♦ overcall - and 4+ hearts); 2 clubs; and at least 10 HCP. The double per se doesn't say anything about the number of spades, but looking at my hand and the bidding I expect him to have 2 (90% of the time) or 1 (the remaining 10%). I expect exactly 2 clubs, since: with less, he's unlikely to have a hand good enough to force the bidding to the 3rd level with no known fit; and with more, he would be leaving me badly placed to evaluate the possibility of passing the double. (The inference about heart length comes more from the opponents bidding than from the double in itself, I admit, so in essence this is pretty much like a Snapdragon double).
3) I bid 3♣. I have a minimum, clubs are not running and my (likely) only entry will soon be gone.