Law 74A3 said:
Law 74B4 said:
prolonging play unnecessarily (as in playing on although he knows that all the tricks are surely his) for the purpose of disconcerting an opponent.
These are part of the Laws. That makes most of the things discussed in this thread illegal. If you knowingly break the Laws with the intention of gaining an advantage, you're cheating.
Phil said:
I'm not a rules guru, but I believe that the rules are:
- If dummy mishears and plays the wrong card, and a defender plays before the error is corrected, the defender can correct it. The information from the withdrawn card is authorised to the other defender, and unauthorised to declarer.
- If a defender mishears and plays out of turn, he's stuck with his choice. And quite right too.
Artk78 said:
That deals with what should take place following the infraction of an incomplete designation. It doesn't make the incomplete designation any less of an infraction.
Artk78 said:
"...'should' do (failure to do it is an infraction jeopardizing the infractors rights but not often penalized),..."
So, while you may be technically correct that the call for a "high" card or a "low" card from dummy is an infraction, it is an infraction that is corrected by the interpretation provided in Law 46B 1. and is not subject to penalty.
"Not often penalized" does not mean the same as "not subject to penalty". If you intentionally commit an infraction for the purpose of gaining an advantage, you're cheating, and in any sane jurisdiction you will be punished accordingly.