2NT was asking; 3♥ showed a balanced 3-card raise.
West lead ♣2 (3rd/5th) to Q and K. I returned a club, west winning with the 9 and east following low. West thus marked with AJ92 originally. West then swithced to the ♥2 (3rd/5th). Opponents use no attitude leads or encouraging/discouraging signals. They can relied upon to show true count 99% of the time - the lead on this hand is one of the few positions where they'll "lie". (They'll follow with a low card from Jx, part of the time from Tx and almost always from 9x - just to give you a picture.)
How do you play to win the contract?
(There's no way for opps to beat you anymore.)
I'll most probably be offline the coming week, moving into a new appartment. I'll probably not give the full hand for some days.

Help

N S
1♦ 1♠
2♠ 2NT
3♥ 3NT