If you hold the commanding card of the adversary’s suit, endeavour
to take out your opponent’s re-entry before the suit is cleared. It
is equally important that you take out this re-entry card if you
know that your partner has the command of the adversary’s suit. In
extreme cases do not hesitate to sacrifice a king or queen in order
to accomplish this purpose. When the dealer attempts to make a card
of re-entry for an established suit, hold up a higher card in order
to frustrate his scheme of play.