The Spokesman-Review – 19 Sep 1936
Dos Jugadas a Emplear
Unblocking is the elimination of self interference. An overtake is a play of a winning high card on the lead of a lower winning card in the same suit. An underplay is the play of a winning high card on the lead of a higher winning card in the same suit. In the above example, you will see the overtake and the underplay I both employed in the unblocking principle.
South is declarer. The contract is six hearts. West makes an opening lead of the diamond, king. South wins this first trick with the lone ace of diamonds. Declarer, must now plan to preserve enough needed entries in dummy so that dummy can lead enough times to attempt the many finesses which seem to confront declarer. South leads the king of spades and overtakes with the dummy ace.
Dummy plays the queen of hearts. When East fails to cover with the king of hearts, South underplays the nine of hearts instead of the seven of hearts. So, when dummy leads the eight of hearts and East again fails to cover with the king, South is able to underplay with the seven of hearts. Dummy is thus still left in the lead. So dummy leads his last and finesses again.
The South ace of hearts is thus able to pick of the East king of trumps on the fourth round of that suit. South then leads the jack of spades and overtakes with the dummy queen of spades. Now in the lead again, dummy leads a club. When East covers this with the queen of clubs, south takes with the ace.
Smooth Sailing.
South now leads the nine of spades and overtakes with the 10 of spades. Dummy is thus entered again and is enabled to lead another club through East. East takes this with the king. Thereafter, South can take the last three tricks with his jack and 10 of clubs and remaining trump. Although they seem to be a bore, the smaller cards do not ignore. For lowly deuces in rightful places can take your tricks as well as aces.