[mikeh]

3N

If gambling, then obvious. Don't worry about the void: the 'book' doesn't show hands with voids so as not to get people thinking that they have to have one

But I would bid it even playing 3N as a 4-level minor preempt: usually denying a solid suit. I would open this 1♣ only if the opps promised to pass.

My 'toy' for this hand is 2♠, any solid suit. I can do this when playing 2♥ is a weak 2 in a major.

Over 2♠, 2N asks opener to bid the suit below the solid suit, ensuring that responder gets to play 3 of the 4 possible denominations, and of course he can often bid 3N. 3♣ is pass or correct for non-game hands.

[Gerben42]

Obvious 3NT gambling.

As a side remark, do not play that Gambling shows a side stopper. If partner then has two stoppers in the side suits and passes hoping you stop the third, invariably you don't and opponents happily cash their suit. A typical hand would look like this:

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After 3NT from West, East will not know if he should pass or not. If 3NT denies a side stopper things are easy.