An opening lead problem from a duplicate at Cheadle Hulme Bridge Club earlier this year.
Love All. Match points Dealer North
After your partner has overcalled hearts and you have raised them the opponents land in three notrump. What do you lead?
It seems normal to lead the suit bid by partner, especially as partner will normally have six of them for his three heart call, but which one to lead?
Declarer is likely to hold the heart ace for the three notrump call, so there is some danger of blocking the suit if partner's hearts are Qxxxxx.
Therefore lead the ten (or king) of hearts.
The full deal was
IAs can be seen on the lead of a small heart the heart suit is blocked and declarer easily makes ten tricks by setting up the club suit.