As South, vulnerable against not, you deal with:
Vulnerable against not, what is your opening bid?
Partner responds 2 (waiting) and then raises your 2 to 3 as shown. And now?
You end up in 7 (the auction, using a 1-keycard response to RKC, is so long that it doesn't even fit on the screen). The K is led. What is your plan?
Let the K win.
Win the A and trump a heart in hand.
Win the A and play diamonds.
Win the A, play AK and trump a club.
Win the A and play a spade to the jack.
Win the A and play a spade to the ace.
Just as you are about to claim, LHO shows out on the first round of spades (as shown below). At least that is better than RHO showing out. How will you continue?
Play the K.
Play the A.
Play a low diamond to dummy so you can take the marked spade finesse.
Play the AK and trump a club in dummy so you can take the marked spade finesse.