EW Vulnerable	North
West ♠  K 3 ♥  K 2 ♦  K 5 3 2 ♣  A K 10 8 5		East ♠  A Q J 10 4 2 ♥  A Q 7 3 ♦  A 7 ♣  4
	South
W N E S 1♣ - 1♠ - 2♦ - 4NT - 5♦ - 5NT   6NT - ?
By bidding 5NT East confirms that the partnership holds all 4 Aces and now asks for West's Kings. West shows holding all 4 Kings. What should East do next ?