At game all you hold:
The auction begins with a pass on your right, you pass, and LHO opens 2NT (20-21). RHO transfers to spades and bids 3NT, which becomes the final contract. Your parner leads the queen of hearts and this is what you see:
Declarer wins the lead with the ace and thinks for about 2 minutes. Hopefully you were thinking too, because next declarer plays the ace of diamonds and a small one. You are in with the jack--what do you return?
Thanks for the comments, guys. Perhaps thg is right about this being a suit-preference situation, but it may be a little obscure, especially in a new partnership or one that doesn't play regularly. Absent that agreement, we are left to our own devices to figure the hand out, and I think Weinstein hit the nail on the head. Assuming partner's hearts are Q-J-Ten, a low spade return is only wrong when declarer has both the ace and ten of spades. So, in my best Kelsey impersonation, if you returned a low spade, you achieve a satisfying down one and 90% of the matchpoints. If you did anything else, you are -600 for a 30% board. At the table I got this one right though I admit that I didn't have all of the reasons worked out. It took me a long time to find the play, so it was nice when the hand was over 2 seconds after :).
Declarer's hand: Tx AKxx AKxx AQ9
Main Event wrap-up
5 weeks ago