Preventing declarer playing from the wrong side
Nice and happy to be a part of this forum, greetings from Greece.
I would like to ask this, after a huge discussion was made at a seminar in Athens about a very common situation:
Is dummy entitled to prevent declarer to play from the wrong hand according to 42b2, or not. And may he prevent him if he notices that declarer has detached a card from his hand, although he is playing from dummy? May he inform him, that he plays from dummy, when is thinking?
Similar to this one, there is another matter. Is dummy entitled to ask declarer if has failed to follow a suit, after the trick has been quilted, defender has played to the next trick, but the declarer has not? Which means that dummy would prevent a possible established revoke?