Thinking outside the box

I was South in a robot pairs cross IMP event with fifteen other human South players in competition on BridgeBaseOnline. I raised partner's TWO HEARTS to FOUR HEARTS. (All pairs got to 4hearts one way, or anther). I had to move over to the North seat to declare for the robot. After the lead of the DQ, I played another top diamond pitching a club from the North (declarer's) hand. I took stock. Despite South's huge complement of high cards, the possible losers were 2 clubs, an inevitable Ace of spades, and a possible HQ. Against normal breaks, although I have a two way finesse (assuming reentries will be safe) I was loath to take an immediate trump position. I thought out of the box. If i exited, in clubs and repeatedly exited in black suits, I could better count out their high cards, distribution and then figure who was more likely to hold the HQ. So I exited with a club which West won. West thought that I was trying to score ruffs in dummy, from my failure to draw trumps. Innocently he returned a trump from xx picking up the queen of his angry robot partner whose circuits were fusing

The traveler showed that I was the only declarer to make 4H. 15 declarers failed by one or two tricks.