[blml] played or not?

[Sven Pran]

> On Behalf Of Herman De Wael
> The contract is 3NT but declarer is confused and he thinks  he's
> playing 5 diamonds. He plays a card from hand and instructs dummy to
> "ruff". When the table stops laughing, the director is called.
> Has the lowest diamond been played or not?

Why would anybody even think the possibility that a Diamond has been called
from dummy? "Ruff" refers to a non-existent denomination.

Sven