This hand comes to us courtesy of my friend Greg. You hold:
Jxx AKJxxxx J xx
You open 3H and play it there. The opening lead is the spade 9, and dummy hits with:
Kxx x Kxxxxx Axx
You duck in dummy and RHO plays low. What's going on here? What does LHO have? Plan your play.
Greg made some intelligent deductions on this hand and was able to score a very good board here. I'll let him tell the rest of the story in the comments.