I reasoned that a passive lead was probably unwise, since West's clubs rated to be very good. Partner having shown 6 hearts, it appears to be reasonably safe to lead the ace of hearts. Dummy comes down:
In this case, partner's count and attitude are both already known. He has 6 hearts and any heart continuation is going to be ruffed in dummy. So, it must be suit preference. I am a little doubtful though, because we have not quite agreed on suit preference situations.
I decide to trust partner to be signaling suit preference and I plop down my second unsupported ace. The ace of spades.
Under the ace of spades, partner plays the 8 of spades. What is partner trying to say? What do you do next?
At the table, I decided that partner had probably forgotten about suit preference and was emphatically discouraging both hearts and spades. Ergo, he must be void in clubs. I led a club, hoping for a ruff.
That was not the right move, because declarer now proceeded to make his contract:
The thing is, once he'd given suit preference for spades, his job was done. I need not have looked at what he played under my Ace of spades. Put another way, with a club void, he'd have played low under the Ace of hearts. That is, if he and I are agreed to play suit preference when dummy has a singleton in our bid and raised suit.
What are your agreements regarding suit preference? Are they complete enough to avoid a mishap like ours?