[blml] establishing a revoke

[Manuela Mandache]

Dear all,

South is declarer in 4S. At trick 4, he calls Sx from dummy, East follows Sx, he
plays SQ, and West discards C4. Declarer plays CA, West pulls C8 from his hand,
moves it towards the table (everybody sees it, but it's not actually played),
then withdraws it saying, "Sorry, was that Spades the previous trick? I'm not
void in Spades..." (my English is betraying me again, what is the right
translation for "j'ai du pique"?)

Is the revoke established? In other words, should "a defender's card [...] must
be played" be read "a defender's card [...] is considered played" in L45B1?

As I want to ask all my questions in one go, one of the following two parts will
be meaningless (according to the answer to the first question).

Part I - The revoke is established in the above situation.
Now let us suppose that East has a MPC, the CK. At trick 4, declarer calls SK
from dummy, East follows Sx, he plays Sx, and and West discards C4. Now declarer
calls Cx from dummy and while North is placing the called card in played
position (!), West says, "Wait, was it Spades the previous trick? J'ai du
pique..."

Is the revoke established too? Or is the "must" of L50D1 a softer one than the
one of L45B1...

Part II - just checking
The revoke of trick 4 is not established, West corrects it and has now two MPC,
the C4 and the C8 (I could have devised a more interesting example...) Declarer
is allowed to withdraw his lead for trick 5 and play something else (L47D).

Best regards,

Manuela