How to Preserve Communication with Dummy

In declarer play, an entry is a winning card that allows you to cross from one hand to the other. Managing these entries—preserving communication—is critical when you need to lead from a specific hand multiple times, such as taking repeated finesses against a defender or crossing to dummy to cash established long-suit winners.

Why preserving communication works

Many contracts fail not because declarer lacked the necessary high cards, but because they cashed their entries in the wrong order and stranded themselves.

If you need to finesse in Clubs twice, you must be in dummy twice. If dummy only has exactly two outside entries (like the ♥A and ♦A), you must carefully use one entry, take the first finesse, then use the second entry to take the second finesse. If you thoughtlessly cash the ♦A early in the hand before tackling Clubs, you destroy the communication required to complete your plan.

A worked example: Managing two entries

You are in 3NT. You need to establish Clubs.

Dummy (North):

♠ 6 5 4

♥ A 3 2

♦ A 3 2

♣ A 10 9 8

Declarer (South):

♠ A K Q

♥ K Q J

♦ K Q J

♣ Q J 3 2

The Play:

Trick 1: West leads a Spade. You win in hand.

Caption: You need to finesse Clubs twice, hoping West holds the King. You need to be in dummy twice to lead towards your Q-J. Dummy has two entries: the ♥A and the ♦A. You must lead a Heart to the Ace, take the first Club finesse, then later lead a Diamond to the Ace and take the second Club finesse. If you cash both the ♥A and ♦A early to "see how they split," you will be stranded in your hand and lose two Club tricks.

Four common mistakes

• Cashing dummy's only high card in a side suit early in the play for no tactical reason.
• Playing high cards from the short side of a suit first, creating a block that prevents you from reaching the long cards.
• Failing to hold-up an Ace when ducking a trick would preserve a vital communication link.
• Not counting your entries during your initial plan at Trick 1.

When the rule does not apply

If the defenders are threatening to ruff your entry card, or if you must cash your winners immediately because the opponents have enough established tricks to set your contract the moment they gain the lead, you must abandon long-term entry preservation and take the tricks immediately.

Key takeaways

• Count your entries at Trick 1.
• Do not cash dummy's outside Aces or Kings prematurely.
• Plan the order of your entries to match the number of finesses you need to take.
• Unblock high cards from the short side to maintain fluidity.