You are quite right. Honestly, I am OK with rules. Anyways, I think 'eventual winner' is a simple exception.
I asked TD to show me his basis in a polite language. Right that moment pointed out to take a look for the handbook he holds.
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Premature Lead or Play by Defender - Law 57
Declarer's options : When a defender leads to the next trick before his partner has played to the current trick or plays of turn before his partner has played, the card so led or played becomes a major penalty card.
Declarer has three options:
1. He may require offender's partner to play the highest card he holds of the suit led.
2. He may require offender's partner to play the lowest card he holds of the suit led.
3. He may prohibit offender's partner from playing a card of a different specific suit.
Note : When offender's partner is unable to comply with the choice made by declarer, he may play any legal card.
When a defender plays before his partner, there is no penalty:
1. If declarer has played from both hands
2. If dummy has played a card on his own inititative or illegally suggested that it be played.
Note : A singleton in dummy or a group of cards in the same suit which are equal in rank is not considered to be automatically played.
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(My review, my opinion) I think it would be nice to redefine item
When a defender plays before his partner, there is no penalty:
"If declarer has played an eventual winner card in a correct turn from ANY hands before offender while both defenders able to follow the suit ".
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If main concern is to keep the unity of field in a fair way, then how come it is possible to assign a contract or give a ruling to bring about plus one while impossible to make it for any World Grandmaster?
Really. in such circumstances, punishment does not have influence on the field while the running event was MPs?
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As a simple soul, I am quite sure circumstances easily alter the case
ps. Sorry, English is not my parent language. I sincerely hope that I did not make much grammar error.