NORTH
AK
AT8
AQ863
Q64
JT985
J76
J
9853
Q64
9
T97542
KJ2
  732
KQ5432
K
AT7
Dealer: North    Vul: None   MP Scoring

West

Pass
Pass
Pass
Pass

North
1
2N
3
6

East
Pass
Pass
Pass
Pass

South
1
3 1
4
Pass

 Establishing a Strange Squeeze 
1 Checkback Stayman: Artificial: Asks for 3 hearts or 4 spades

West led J.
Declarer cashed two top spades and led from dummy the Q.
East covered with K and the A was won.
A spade was ruffed in dummy.
Trumps were drawn to arrive at this position with East to last follow/discard:
NORTH
 

AQ8
irr.
 

T97
J
   
 
K
T7
A diamond discard would establish dummy and a club discard would establish declarer's T.

There were 2 spades, 1 spade ruff, 6 hearts, 1 club, 2 diamonds and whichever 13th trick East's action would result in.