Singleton Club – Responder – 1♢

Singleton Club – Responder – 1♦

N
W   E
 
S
♠ K 4
♥ 5 3 2
♦ K 10 4
♣ A K 9 6 4

Dealer:

West

W N E S
1♦ Pass ?

Partner opens 1♦ and we have a strong hand. What should we bid?