[relknes]

I have another question about legality (USA).
Is it legal for a player to open 1NT with 14-16 points and either a balanced hand or a monor-oriented hand, if you alert your opponents to the posability?
It is a "Natural" bid in the sense that it is making a real suggestion that the partnership play in NT, but not in the more common sense of identifying your distribution most accurately. After all, most games without a major fit end up in NT...
I know that some partnership allow for a 1NT bid on cirtain "semi-balanced" hands, but I am talking about hands with 5-4 in the minors or a hand with 7 diamonds, etc.
My guess is that it would be illegal if it were a "Weak" bid, but with 14-16 points it isn't at all destructive in nature or intent. It is a contract you would expect to make easilly across from partner's average of about 8 points, and if partner tries stayman showing better than average values, then 2♦, 2♥, and 2♠ would have their traditional meanings, while 2NT could show both minors, 3♣ a single suiter in clubs, and 3♦ a single suiter in diamonds. A simmilar structure could be played over an attempted transfer.

[Phil]

Bump to simple rulings please.

[barmar]

The GCC says: A no trump opening or overcall is natural if not unbalanced (generally, no singleton or void and only one or two doubletons).

So unless you routinely open 1NT with a singleton or 7-2-2-2 shape, you're OK.