Australian Bridge Standard

The system used in our Bidding Forum

In all cases, explanatory comments in the magazine or on the web page override these notes.



With 4-4, 5-5 or 6-6 in minors, open 1diamonds (showing 4+ diamonds).

With 3-3 minors, or three diamonds and two clubs, open 1clubs. Otherwise open longer minor.


Four-card suits up the line.

No suit quality required for a suit response.

Criss-cross invitational raises (1clubs-2diamonds, 1diamonds-3clubs), normally showing five of the suit. Preemptive jump raises.

1 minor – 1NT: 8-10 over 1clubs,  7-9 over 1diamonds.

1 minor – two of the same minor: inverted, 11+ HCP.

1 minor – 2NT: 11-12, no major.

1 minor – 2 of a major: weak jump shift, 4-6 HCP.

1 minor – 3hearts, 3spades: splinter.

1 minor – 3NT: (12) 13-15, balanced raise, 4+ card support.

Fit-showing jumps.



Five-card suits in first or second seat, may be strong four-card suits in third or fourth position.


2/1 game forcing. 1spades-2hearts shows five, 1M-2clubs can be three if planning to rebid 2NT.

Preemptive jump raises.

Long-suit trial bids by opener.


1 major – 1NT: 6-11, semi-forcing (opener can pass with minimum 5332).

1 major – 2NT: Jacoby. Continuations will not be relevant to our bidding forum problems.

Fit-showing jumps.

1 major – 3NT: (12) 13-15, balanced raise, 4+ card support.


1NT: 15-17


Simple Stayman (promises a major).

Transfers to majors.

2spades: transfer to either minor (opener bids 3clubs).

3-minor: natural game force.

3-major: natural slam invite.

Stayman followed by 3-minor is natural and forcing (and promises a major).


2clubs opening: Game Force or 23-24 balanced.


2diamonds: less than 3 controls (A=2, K=1).

2diamonds, 2hearts, 2spades: Weak Twos



2NT: 21-22 balanced.


3clubs: Simple Stayman.

3diamonds, 3hearts: Transfers.

3spades: 5 spades, 4 hearts.

4clubs, 4diamonds: natural, slam tries.

3clubs and higher:

Normal preempts. 3NT: Gambling.

Shows any solid seven-card suit, with less than a king outside suit.


Responding and rebidding style:

Reverses forcing for one round. Fast arrival applies.

New suit over two-level response forcing; promises another bid, e.g. 1spades – 2diamonds – 2hearts.

Raising responder’s two-over-one response to three shows a minimum, non-forcing.

Double jump rebid by responder splinter (e.g. 1diamonds – 1spades; 4clubs).

Jump rebids by responder in a bid suit or to 2NT non-forcing (e.g. 1clubs – 1hearts; 1spades – 2NT).

Fourth-suit forcing to game.

After opener’s 1NT rebid, two-level bids are droppable, three-level rebids of responder’s original suit are invitational, and new suits at the three-level force to game.

Slam bidding methods:

4NT: RKCB (1430)

Normal (first round) control bids.

When a suit is agreed, the next notrump bid is a pivot (e.g. 1hearts – 2NT; 3hearts – 3NT denies spadesA or clubsA).

Competitive bidding:

2clubs over their 1NT is takeout for the majors – responder’s 2diamonds shows equal length.

Other bids over their 1NT are natural.

Negative doubles to 4hearts.

Responsive doubles to 4diamonds.

Lebensohl after doubles of weak twos (3X stronger than 2NT, slow show).

2NT scramble over takeout double when both opponents are bidding.

Weak jump overcalls.

Support doubles.

1NT overcall 15-18: same methods used as over a 1NT opening.

1NT balancing: 10-14, shows stopper in the suit opened.

Takeout doubles after interference to our notrump.

Takeout doubles over weak twos, preempts to 4hearts.

Change of suit after overcall forcing, 2NT bid droppable.

Preemptive jump raises of overcalls.

Cue raises.

In response to partner’s takeout double, 2NT is droppable, a bid of the enemy suit is forcing to suit agreement.