[blml] establishing a revoke

[Sven Pran]

> On Behalf Of 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"?)

"I have a spade" or "I have spades" (You can also say "I do have ....") 

> 
> 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?

No, the revoke is not established, the applicable law in this context is Law
45A:
"Each player except dummy plays a card by detaching it from his hand and
facing (14) it on the table immediately before him"

> 
> 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.

No

> 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).

Correct. 

Regards Sven