Posted 2013-September-10, 01:56
First of all, even if North does have a singleton heart, that would also make it quite probable that he has 3 or more trumps, and thus any ruff would cost him a trump trick. So there's really no reason to be scared of a ruff and at matchpoints then absolutely mandatory to play the ♥Q on trick one.
Secondly, if you're playing for the ♦K in South, you might as well run the ♦J, there is not much to be gained by overtaking with the Q.
"One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision"
-- Bertrand Russell