ACE FOR ATTITUDE, KING FOR COUNT

Some people play that you vary your lead from ace-king depending upon whether you want partner to give an attitude or a count signal. With this method, you lead the king if you hold significant length in the suit or the queen, as well as the ace-king (when you simply want to know how many rounds will stand up) but the ace if you have a relatively short ace-king holding (when the queen in partner’s hand could be a third-round winner).