bluejak, on 2011-February-19, 20:06, said:
How do you "withdraw" a played card? You cannot.
Compare bidding: you place the 5♦ card on the table. You then decide 4♦ would be a better bid. Now, assuming this is not a mechanical error, you cannot withdraw the 5♦ bid: it is the bid you have made and remains the bid you have made even if you put it back in the box. Either you can withdraw it, or you cannot. Law 25A allows a call to be withdrawn [and other Laws in certain circumstances, eg after MI] but if it is not allowed to be withdrawn, physically putting it back in the box does not mean it is withdrawn.
So, declarer played a card, and it cannot be withdrawn. Putting it back and pickling out another does not work.
Another comparison. Declarer takes a card out of his hand, puts it on the table, and then changes his mind. It does not matter whether he puts it back in his hand, he cannot withdraw it because it has been played.
So, if the club has been played from dummy it cannot be withdrawn. If RHO now plays a card it is because the club has been played from dummy.
Sure, declarer then committed an irregularity, but the rule is simple: after an irregularity you call the TD, and if you don't, you proceed at your own risk [Laws 9 to 11].
Are you serious?
A quick count in Law 47 showed me
seven occurrencies of the word "withdrawn" in connection with played cards. And you assert that a played card cannot be withdrawn?
There is no dispute that declarers action of taking back the
♣4 and instead place the
♦K in the played position was illegal, but the fact is that declarer did it.
How are we to describe declarer's action other than as an illegal withdrawal of the
♣4 followed by an illegal play of the
♦K? Do you assert that declarer didn't do anything with these two cards?
Declarer physically (and deliberately) withdrew the
♣4 in conflict with Law 47F2 and played the
♦K in conflict with Law 45C3.
So what do we do with the
♦K? We use Law 47B and order it to be withdrawn. And thereafter we have Law 47D for the
♦3.
And finally just one comment on your bidding example: You seem to completely overlook Law 25B which handles the situation where a player changes his intended call. The fact that a player physically puts back a bid card to the box and replaces it with another is fully recognized by Law 25B as an attempt to withdraw the first call and make a second call. Whether this change of call is accepted or not is up to the offender's LHO, but asserting that the second call was not made is just nonsense. If the change of call is not accepted the second call is cancelled with the consequences from Law 25B3.
To the extent that this example might have any relevance for the current discussion it appears to me that it corroborates the opinion that the
♦K was indeed played (illegally) and the use of Law 47B on this play.