It is IMPS and no one vul.
RHO is dealer and opens 1♥. You overcall 1NT. LHO passes, pd bids 2H (transfer to spades), RHO passes, you bid 2S and LHO doubles. Three passes.
LHO leads the ♥A and shifts to club.
On club shift you play low, low from RHO and you win the Q. When you cash the ♠A, as expected, RHO shows out. What now?
This hand is for beg/int only. Adv/+ please hide if you decide to respond.

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ing) tr. v. - Any bid made by bridge player with which partner disagrees.