14th February 2018
Dealer South
 S
 J4
    
E-W Vul
 H
 J7432
    
    D A843
    
    C J3
    
S
 109872
     S
 AQ65
H
 A9
     H
 Q10
D
 J107
     D
 965
C
 Q98
     C
 AK72
    S
 K3
    
    H
 K865
    
    D
 KQ2
    
    C
 10654
    


South
 West
 North
 East
Pass
 Pass
 Pass 1NT
Pass
 2H Pass 3S
Pass
 Pass
 Pass


Another deal from the Manchester congress, not a slam this week!
After the above auction you play in three spades on a club lead.  After the trump finesse loses South returns a trump.  You play on clubs and find that they do not break, so eliminate them and exit with a diamond to reach the end position below.

Dealer South
 S
   
E-W Vul
 H
 ??
    
    D ??
    
    C
   
S
 1098
     S
 65
H
 A9
     H
 Q10
D
 J10
     D
 96
C
    C
    S
   
    H
 ??
    
    D
 ??
    
    C
   

When North leads a heart which heart do you play?
It is correct to play the ten.  Presuming that the diamond honours are split North-South can arrange to play a heart from either defender's hand.  If North holds the heart king then South would win a diamond to play a heart through.  So North should not have the heart king, so you must hope that he has the heart jack.

Thanks to John Currie who played and analysed this deal