Dynamic 1NT Overcalls

Standard approaches rely on being able to double and then bid our long suit with a strong (17+ point) 1-suited hands. For example, holding:

Overcaller

AK109xx

AQx

AJ10

Over 1H by RHO we can make a takeout double and risk hearing Partner jump in any new suit. But what if RHO has opened a minor and Partner leaps off to 3H or 4H? Now we may be in trouble. But if we forego the double and overcall 1S (8-16 points) we run the very real risk of missing a game. A jump to 2S would be worse, since that is a weak jump overcall. What we need is a way to show our strong hand without risking a jump in Hearts from Partner. This is the benefit of using a strong and forcing "Dynamic" 1NT overcall for this purpose.

But what is the cost? Well, a natural 15-18 HCP overcall is lost. Given the number of times that 1NT will cost us -500 or more, this "loss" may be illusory. Still, we need a way to handle a flat 15-18 HCP hand when we do happen to hold one. This, too, is not a problem: we double. Now, at least, if Partner starts leaping off in a suit we will have 2-5 cards there and significant compensating values. If Partner bids a suit without jumping, we can pass if in the 15-17 point range (since 17 + 8 < 26) and rebid in No Trump with 18+ (1NT with 18-20 HCPs, jumping to 2NT in some cases with 21-22 HCPs).

A Dynamic 1NT overcall, then, is a strong, unlimited hand, forcing for one round. But is it always a 1-suiter? Answer: No. Occasionally it will be a very strong flat hand (23+ HCPs, usually) with solid guards in the enemy suit. It can also be a 2-suiter--especially if these two suits cannot be described using a 2-suited overcall.

Overcaller

AK109x

AKQxx

Over 1H we might go with 2H, a Michaels overcall, but what if RHO has opened 1C? Again, a double might fetch 4H from Partner (ugh!) so we might go with a Dynamic 1NT overcall here.

2C = 0-5 HCPs that do not qualify for 2H or 2S (below).
2D = 6+ HCPs, positive, but does NOT promise a rebid.
2H = 0-5 HCPs, 5+ Hearts, 0-1 Spade.
2S = 0-5 HCPs, 5+ Spades, 0-1 Heart.
2NT = 6-8 HCPs, flattish, with a guard in their suit.
3C = 0-5 HCPs, 6+ Clubs, 0-2 in both majors.
3D = 0-5 HCPs, 6+ Diamonds, 0-2 in both majors.

Dynamic 1NT overcaller can now forcing with a jump rebid or a cuebid. Simple suit rebids by Dynamic 1NT Overcaller are not forcing. 2NT is forcing only if Advancer has just bid 2D (6+ HCPs).

RHO You LHO Pard Comments

1 1NT Pass 2 0-5 HCPs, denying hand for 2H or 2S.
Pass 2 --- --- Game forcing.

RHO You LHO Pard Comments

1 1NT Pass 2 6+ HCPs, denying hand for 2NT.
Pass 3 --- --- Game forcing.

RHO You LHO Pard Comments

1 1NT Pass 2 6+ HCPs, denying hand for 2NT.
Pass 2 --- --- Natural, non-forcing.

RHO You LHO Pard Comments

1 1NT Pass 2 0-5 HCPs, denying hand for 2H or 2S.
Pass 2NT --- --- Natural, non-forcing. 23-24 HCPs, flat.

RHO You LHO Pard Comments

1 1NT Pass 2 6+ HCPs, denying hand for 2NT.
Pass 2NT --- --- Natural, Game Forcing (23 + 6 > 26).

If Responder intervenes with a raise, doubles by Advancer are Responsive, suggesting 6+ points and, usually, 2+ cards in all the unbid suits. Free bids are natural and non-forcing, suggesting 6-8 HCPs.

RHO You LHO Pard Comments

1 1NT 2 2 Natural, 6-8 HCPs, not forcing.

RHO You LHO Pard Comments

1 1NT 2 Dble Responsive, 6+ HCPs.

If Responder interferes with a new suit bid, doubles are Penalty. Advancer uses the cheapest suit bid as Fishbein (similar to a Responsive Double), promising 6-8 points and 2+ cards in the two unbid suits. Other free bids are natural and non-forcing, in the 6-8 HCP range. Cuebids or jump suit bids by either Dynamic 1NT Overcaller or Advancer force game.

RHO You LHO Pard Comments

1 1NT 2 Dble Penalty.

RHO You LHO Pard Comments

1 1NT 2 2 Fishbein. 6-8 HCPs, 2+ in each unbid.

RHO You LHO Pard Comments

1 1NT 2 2 5+ Spades. 6-8 HCPs. Not forcing.

Because a jump suit bid in the passout seat is strong (albeit not forcing) Dynamic 1NT overcalls are in effect only in direct seat.

RHO You LHO Pard Comments

1 Pass Pass 2 17-19 HCPs, 5+ Spades. Not forcing.

RHO You LHO Pard Comments

1 Pass Pass 1NT 10-15 HCPs, flat. Not forcing.

The most dramatic effect of playing a Dynamic 1NT Overcall--aside from missing those -500s in 1NT when it is Responder who has most of the outstanding strength--is that our takeout doubles are less often "off shape".

Fireside Hand of the Week Site Click here to go to the Fireside Hand of the Week Site for information on the Fireside Bidding Practices.

Colin's Tutoring Web Site Click here to go to Kaltica's Tutoring Web site for online bridge tutoring, articles, lessons and schedules.

Some Neat Hands This site has some interesting and/or entertaining hands, mostly from online tourney play.

Colin's Personal Bridge Page
Click here to go to Kaltica's Bridge Site for more advanced players.

If your computer has MIDI capacity, you have been listening to Led Zeppelin's "Stairway to Heaven".

RHO	You	LHO	Pard	Comments
1	1NT	Pass	2	0-5 HCPs, denying hand for 2H or 2S.
Pass	2	---	---	Game forcing.

	Fireside Hand of the Week Site Click here to go to the Fireside Hand of the Week Site for information on the Fireside Bidding Practices.
	Colin's Tutoring Web Site Click here to go to Kaltica's Tutoring Web site for online bridge tutoring, articles, lessons and schedules.
	Some Neat Hands This site has some interesting and/or entertaining hands, mostly from online tourney play.
	Colin's Personal Bridge Page Click here to go to Kaltica's Bridge Site for more advanced players.