(1) 5=4 in the majors, game forcing.
West leads the ♦4, fourth best. You play the jack from dummy. East plays the 2, standard count. Plan the play.
West leads the ♦7, third from even, low from odd.
A. How do you continue if you go up with the ♦A?
B. How do you continue if you finesse the ♦Q and it holds?