We play HELD (on discards) and count signals, and whilst I wasn't sure what was optimal at trick one I decided to win and return my fourth best heart. Partner got psuedo-squeezed and threw her spade guard allowing declarer to make ♠AKJ at the end. She said she didn't know whether declarer had ♠AK♥X or ♠AKx♥- at the critical time and was on a guess.
I have a feeling I could have made this easier for partner maybe by dropping the jack on the run of clubs or diamonds which should promise the ten, then partner knows her ♥Q is unnecessary and can be safely discarded. What do you think?