Set One 12 April 2017 Hand 10

Board 10 East Deals	♠ A K 10 2 ♥ 10 ♦ K Q J 10 6 5 2 ♣ 9
♠ 6 ♥ 7 3 ♦ 9 8 7 3 ♣ Q 8 7 6 5 3	N W E S	♠ Q 9 8 7 4 3 ♥ Q 8 6 4 ♦ 4 ♣ A 2
	♠ J 5 ♥ A K J 9 5 2 ♦ A ♣ K J 10 4

NS 6N; NS 6♦; NS 5♥; NS 3♠; NS 3♣; Par +990

West	North	East	South
		2 ♦	Dbl
2 ♥	Dbl	2 ♠	3 ♥
Pass	4 ♦	Pass	4 ♥
Pass	6 ♦	All pass

6 ♦ by North

Lead: ♦ 4

Made 6 — NS +920

Here south is too strong for 2 ♥. An alternative is 3 ♥ showing a six-card suit and a better than minimum hand. 

North also doubles, which can be based on a very wide range hand. Anything from around 8+ hcp and no biddable long suit up to many game forcing hands. South's rebid in a major shows a strong hand as does north going past 3 NT. With a more moderate hand without a heart fit north could bid 3 ♠ (to investigate 3 NT) or 3 NT. 

With good diamonds north jumps to slam hoping for two aces in the strong hand partner has shown.

---