[kereru67]

In case you don't know a "Gambling 3NT", a traditional part of Acol and other bidding systems, involves opening 3nt with a solid 7 card minor (preferably AKQJxxx, AKQxxxx is riskier) and almost nothing outside. The hope is that partner can cover the other suits, allowing 3NT to make with considerably less than the usual 25-26 points; otherwise they can just bid 4♣ which you either pass or correct to 4♦.

In my opinion this is a very silly convention. It's possible that with a 7 card minor that's going to run, 3NT will end up being the best contract, but if that's the case you want your partner to be playing it, not you; that way the lead comes up to partner's hand. If you open 3nt and end up playing it, opponents who know what they're doing will lead an ace to get a look at dummy, identify dummy's weak suit (the one where partner has an A sitting over their K or Q), and lead through it. Just open 3 of your minor and hope partner can bid 3NT (or 5 or 6 of your minor), or maybe have some partnership agreement to show this specific type of hand without bidding NT yourself. As for what to do with a 3NT opening, maybe just make it 25-26 hcp balanced. With such a space consuming bid, you want the definition to be quite narrow and specific.

[mike777]

Or preemptive long major
Then you can add asking bids or whatever over it.
See Martel-Fleisher or others

[awm]

I recall playing in an ACBL nationals and coming up against two expert opponents who were not a regular partnership. They opened a gambling 3NT and wound up with a poor result. Discussing after the hand, they determined that they both thought this was a terrible convention, and that it had only made its way onto the card because they merged their cards with a common partner (who, one supposes, liked the convention). They crossed it off their card for the future rounds!

Anyway, I agree that this is not a very good use for 3NT. However, I wouldn't open 3m on these hands -- they are too strong and partner will never play me for a solid suit. My strategy instead would be to open 1m. I agree with Mike777 that "good 4M preempt" is a good meaning; there are also some weak two-suited meanings that could work (Elianna and I play it as 6♥-5m weak).

[blackshoe]

Kantar 3NT.

[P_Marlowe]

Hi,

if you dont have any other use for the bid, gambling is ok.
Peoble like to preempt with broken 6 card minor suits, ..., this makes it hard to find 3NT after
a minor suit preempt in 1st / 2nd position.

In short, it is easy to rant against a specific usage, but quite often the bid works in a context,
and the context may mean, that the bid is useful, or plugs a hole.

Anyway, Fred Gitleman, BBO founder, suggested using 3NT as 65 majors, ..., one reason he invented
this was his dislike of the Gambling 3NT.

With kind regards
Marlowe

[pescetom]

IMO it is a very poor use for 3NT:
- it is extremely low frequency (once or twice a year if closely defined with at most a side Q)
- it is high memory load (if you and partner ever memorized the full developments in the first place)
- it wrongsides the contract, exposing tenaces and stops that otherwise had some chance.

I prefer to use 3NT as a Namyats like opening or in alternative as both minors (65 majors is a happy problem).

[mw64ahw]

Better to play 3♠ as the Gambling NT.

Then filling out as you wish, for example
4♣ to 4♠ Namyats
3N minor suit preempt/Kantar 3N/Kabel 3N
3♥ 55xx preempt
3♦ Major suit preempt
3♣ xx55 preempt
2N minor suit preempt

[DavidKok]

A bid for every hand, not a hand for every bid.

[jillybean]

---

fred, on 2025-June-22, 15:28, said:

I like to play a 3NT opening shows a hand like this (a preempt with at least 6-5 in the majors - obviously, as with all preempts, the vulnerability matters).

I invented (or, more likely, unknowingly reinvented) this convention about 25 years ago.

Doesn't come up very often of course, but it seemed to work better than any of the alternatives for 3NT openings that I have tried over the years. Admittedly it is hard to be objective about such things and I certainly have not made any real effort to keep track of the results.

You need to play reasonable methods over this for it to be workable. If anyone is interested, I will post what we came up with. I might not be able to do so immediately as I am in the middle of playing in a serious tournament.

It is a fun convention to play which, for me at least, is a nice plus

[P_Marlowe]

mw64ahw, on 2026-May-28, 15:23, said:

Better to play 3♠ as the Gambling NT.

Then filling out as you wish, for example
4♣ to 4♠ Namyats
3N minor suit preempt/Kantar 3N/Kabel 3N
3♥ 55xx preempt
3♦ Major suit preempt
3♣ xx55 preempt
2N minor suit preempt

The list is incomplete, but already highlights the issue, you replace /
suggest to use 3S as Gambling, and all bids on the 3 level are effected,
and you lost the natural 2NT opening.

Obv. you can handle the loss of the 2NT opening as part of birthright,
but I doubt that the conventions works better, if you lower the lower floor
of the 2C opening, because this means, more hand have to go through 2C.
And this may mean, even your 1 level openings get effected.

And all this, because one does not like 1 bid, a heavy price to pay.

The Gambling 3NT was invented, because peoble had a bid (3NT) that had NO
meaning assigned to it (the bal. hand could be handled by the strong 2C opening),
they basically moved the original 3NT opening hand into the 2C hands, and got the
feeling, that it worked better, e.g. it made it easier to find 44 major fits, in
case opener had a 25+ hand, and as a result it freed up 3NT. (*)

so they started to assign a new meaning to the freedup bid.
If you dont like the meaning, assign a different one.

(*) Your method introduces xfer preempt opening bids, making those less effective,
being able to show specific 55 hands, counters this a bit, but still the pure preempts
loose effectivity. If you come up plus after all is taken into account ... no idea,
you play it, if you think so, I am taking your word for it, ...
it would be to complicate for me, because the various bids will have different follow up,
I also need to memorize, I have kids, I am fulltime working, I am 50+.

[P_Marlowe]

And a general comment:
The main problem with the gambling 3NT is freq., it boils down what represents a running suit, look at the various
threads, that claim AKQ xxxx is NOT enough, which is a valid point, although I would disagree.
If you move the meaning of the 3NT opening to another bid, this bid will have the same major problem: low freq.

If you think the hand type is relevant, reserving a bid is ok, if you think the bid never comes up, you can pretend
the hand type does not exists, and those freeing up the spot the bid has occupied.

[mw64ahw]

P_Marlowe, on 2026-May-29, 04:40, said:

The list is incomplete, but already highlights the issue, you replace /
suggest to use 3S as Gambling, and all bids on the 3 level are effected,
and you lost the natural 2NT opening.

Not sure what else you're looking for, but there are of course the other 2-level preempts. I find that losing the natural 2N and using reverse 'birthright' is a positive for reasons explained in other posts.

Obv. you can handle the loss of the 2NT opening as part of birthright,
but I doubt that the conventions works better, if you lower the lower floor
of the 2C opening, because this means, more hand have to go through 2C.
And this may mean, even your 1 level openings get effected.

I don't lower the floor and in fact I remove strong Diamond & minor oriented hands from 2♣.

And all this, because one does not like 1 bid
, a heavy price to pay.

The Gambling 3NT was invented, because peoble had a bid (3NT) that had NO
meaning assigned to it (the bal. hand could be handled by the strong 2C opening),
they basically moved the original 3NT opening hand into the 2C hands, and got the
feeling, that it worked better, e.g. it made it easier to find 44 major fits, in
case opener had a 25+ hand, and as a result it freed up 3NT. (*)

so they started to assign a new meaning to the freedup bid.
If you dont like the meaning, assign a different one.

(*) Your method introduces xfer preempt opening bids, making those less effective,
being able to show specific 55 hands, counters this a bit, but still the pure preempts
loose effectivity. If you come up plus after all is taken into account ... no idea,
you play it, if you think so, I am taking your word for it, ...
Not my method, but I do play 2N art/3♣ xx55 bids.

it would be to complicate for me, because the various bids will have different follow up,
I also need to memorize, I have kids, I am fulltime working, I am 50+.
I'll raise you a couple of grandkids-some of the bids fit in with my overcalls so memory becomes less of an issue as I'm reusing structures. Follow-ups are rare, and also simplistic.

Overall fun trying new ideas

[pescetom]

 P_Marlowe, on 2026-May-29, 04:40, said:

The Gambling 3NT was invented, because peoble had a bid (3NT) that had NO
meaning assigned to it (the bal. hand could be handled by the strong 2C opening),
they basically moved the original 3NT opening hand into the 2C hands, and got the
feeling, that it worked better, e.g. it made it easier to find 44 major fits, in
case opener had a 25+ hand, and as a result it freed up 3NT. (*)

so they started to assign a new meaning to the freedup bid.

My understanding is that Gambling 3NT predates strong 2C and is just another example of a "natural convention" that was gradually turned into an explicit agreement and made more precise. In this case, opening a natural 3NT as a gamble with a distributional hand and one suit wide open. Similar to bidding the last remaining unbid suit as the only sure way to keep partner talking, bidding a minor over 1NT to find out if opener has a 4 card major, risking double of a slam to wake up partner that there is some way of setting it (fill in the names).

[P_Marlowe]

pescetom, on 2026-May-29, 08:51, said:

My understanding is that Gambling 3NT predates strong 2C and is just another example of a "natural convention" that was gradually turned into an explicit agreement and made more precise. In this case, opening a natural 3NT as a gamble with a distributional hand and one suit wide open. Similar to bidding the only remaining unbid suit as the only sure way to keep partner talking, bidding a minor over 1NT to find out if opener has a 4 card major, risking double of a slam to wake up partner that there is some way of setting it (fill in the names).

The Gambling 3NT is old, the strong 2C opening seems to be from the early 1930s
https://en.wikipedia...d_Bruce_(bridge)

and if you have this bid, you dont need 3NT to show 25...27, one would need to read
older books, that the ones in my household.

[pescetom]

P_Marlowe, on 2026-May-29, 09:02, said:

The Gambling 3NT is old, the strong 2C opening seems to be from the early 1930s
https://en.wikipedia...d_Bruce_(bridge)

and if you have this bid, you dont need 3NT to show 25...27, one would need to read
older books, that the ones in my household.

I read it in a pre-war Acol book where 3NT was still natural 25+, although 2C artificial may already have been around elsewhere.
It was still a deviation from an accord, not a convention (the probability of partner passing 3NT is high).
Later it became a convention with two side stops.
In Italy at the end of last century they played a version of the convention promising one side stop, which is probably the highest frequency hand.
North Americans who dislike ambiguity refined it to no side stop and at most a side Q, which is what I was taught this century.

[Huibertus]

"Gambling 3NT" - It never occurs so better pick some other meaning for 3NT that is both useful and has a higher frequency of occurrence. And even if 3NT gambling DOES occur, whenever 3NT IS the right contract with the long solid minor, is probably it right in partners hand only and you just made that impossible by opening 3NT.

If allowed (it usually isn't) 3NT a a random 2 suited 4 level preempt is my preference, if not allowed make that a 4 preempt level major two suiter.

[pescetom]

Huibertus, on 2026-May-29, 11:56, said:

If allowed (it usually isn't) 3NT a a random 2 suited 4 level preempt is my preference, if not allowed make that a 4 preempt level major two suiter.

"Usually" looks to me like an overbid... certainly not in WBF or obedient countries, where you can agree 3NT however you like.
Maybe ACBL is uptight about this?

[mikeh]

I’ve long played 3N as a single suit 4-level minor preempt, allowing us to play a form of namyats. 4C is a one loser major and 4D is a no loser major. In theory this enhances slam bidding…over 4C responder usually needs a fitting honour while over 4D, he is assured of solid trump. In the real world this almost never happens. Plus the 3N meaning is quite easy to defend against . We play x is a strong notrump or better, 4C is majors, better hearts and 4D is majors, spades as good as or better than hearts. But none of these bids arise very often and so we haven’t changed this in 30 years (we took a 16 year gap in the middle) despite changing virtually every other part of our system.