When you hold but one re-entry card, be careful not to take a finesse, which will block your suit.
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In the above examples dummy is supposed to hold one re-entry card in another suit. Should the dealer make an unsuccessful finesse, the adversary will at once take out the re-entry card, and the suit, being blocked, cannot be made.
OVERTAKING
It not infrequently happens on the initial opening of a hand that you have the option of winning the trick either in your own hand or in dummy; if you find that your cards of the suit led are all of equal value it is essential that you consider the advisability of overtaking a trick that you have already won.
With no re-entry in a hand, overtaking is often the only means of making a suit.
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