Consider this suit in a NT contract in which you need 4 tricks: AK87 Q106 Due to problems with entries to dummy (but starting in dummy), your best options seem to be a first round hook of the 10 or to unblock the 10 en route to leading up to the K8. Suppose you choose the latter line (or someone starts out by playing the first trick and leaves you to clean up) and it goes: ACE, five, ten, two seven, nine, QUEEN, three six, four, ? Assume the opponents are playing their spots completely randomly, what card do you play if i) no other information is known ii) another side suit is known to be 4=2