Deal 16	♠   ♥   ♦   ♣		WEST   NORTH   EAST   SOUTH pass 1♠ pass 4♦ pass  BID      Partner's 4♦ bid is a Splinter Bid. It shows opening hand strength, at least 4-card ♠ support, and a singleton or void in ♦s. Decide what you would say next, then click on BID above.
	♠ K Q J 9 6 5 ♥ A K ♦ 8 7 5 ♣ A 5

 

Deal 16	♠   ♥   ♦   ♣		WEST   NORTH   EAST   SOUTH pass 1♠ pass 4♦ pass 4NT pass 6♦ pass  BID    Partner's 4♦ bid is a Splinter Bid. It shows opening hand strength, at least 4-card ♠ support, and a singleton or void in ♦s. Decide what you would say next, then click on BID above. Normally you would not ask for Key-Cards with this ♦ holding. But since you know partner has at most a singleton, and that it is not the singleton ♦A, you are safe to do so. You say 4NT, partner replies 6♦. What next?
	♠ K Q J 9 6 5 ♥ A K ♦ 8 7 5 ♣ A 5

 

Deal 16	♠ A 10 8 4 3 ♥ Q 10 8 4 ♦ -- ♣ K J 10 2		WEST   NORTH   EAST   SOUTH pass 1♠ pass 4♦ pass 4NT pass 6♦ pass 7♠ pass pass pass Partner's 4♦ bid is a Splinter Bid. It shows opening hand strength, at least 4-card ♠ support, and a singleton or void in ♦s. Decide what you would say next, then click on BID above. Normally you would not ask for Key-Cards with this ♦ holding. But since you know partner has at most a singleton, and that it is not the singleton ♦A, you are safe to do so. You say 4NT, partner replies 6♦. What next? WOW! Partner has one Key-Card and a ♦ void. So the Key-Card is the ♠A. You don't know what the rest of partner's hand is, but he can surely take care of that small ♣. You bid 7♠.  Deal 17
	♠ K Q J 9 6 5 ♥ A K ♦ 8 7 5 ♣ A 5