A defensive problem adapted from a deal played in a Cheadle Hulme duplicate.
You choose to lead the six of clubs after the above auction. Declarer wins with the ten in dummy, partner playing the three and declarer the seven.
Now declarer leads a diamond from table to the two and jack. You win with the queen.
Assume that you are playing teams and your goal is to defeat the contract. What do you play now?
Partner holds about five points. Your best chance is that declarer has a singleton spade and that you can take four spade tricks.
You need to switch to the nine of spades, this will be covered by the ten and queen, then a spade to your ace followed by the five of spades allows partner to take the last two spade tricks with king, seven over the jack, six.
The full deal was