KO. Semi-finals, bracket A.
The auction (comments?):
1♦-1♥-X-P
1NT-P-3NT-all pass
Opening lead: Heart King (edited -- oops)
You win the opening heart lead and cash four clubs. RHO ditches two hearts on the clubs. LHO ditches the diamond 10 (upside-down signals). Now what?
If you opt to cash two spades at this point, for whatever reason, LHO plays small then Queen.
Any additional info needed?