Theory and Conventions

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Voidwood or Exclusion Blackwood (sometimes incorrectly referred to as Lackwood)


These are two different names for the same thing.

Strictly speaking the third name refers to a similar convention which is scarcely seen any more, but the term is not infrequently used as an alternative for the present convention.


Using this convention, once a suit has been agreed then a jump in a new suit shows a void and asks for key-cards on the usual scale but not counting the ace of the void suit.

K Q J 5 2

A K Q 6

K Q 9 8

3 is a limit raise.

All you need to know about are the aces in diamonds and spades.

Bid 5 which asks for precisely this information.

Note that a standard Blackwood response showing two controls would not be helpful.

You

LHO

Pard

RHO

1

-

3

-

?









This convention is strongly recommended as you look to move beyond an intermediate standard.

Post intermediate and above