Information
Hand 5435
Vul: E-W Dlr: South
Contract 4S
Lead ?
Matchpoints

 

Bidding
W N E S
1S
P 1NT P 2S
P 3S P 4S
West
  10
  K85
  K1094
  A10873
North
 
 
 
 

South
 
 
 
 
East
 
 
 
 

   

1NT was forcing but South moves on to the major suit game when North invites by raising spades.

What would you lead?