AU Bridge Conventions

1Stayman2 C asking for a 4 card major
2Transfers5 card major; 6 card minor
3Texas TransferAfter NT bid, 4 D or 4 H and pass (6 cards plus 10 – 15 points)
4Michael'sSee Below
5Unusual NTSee Below
6Jacoby 2 NTSee Below (only w/o interference)
7Help Suit GameTry See Below
8Gerber4C anytime if C's not bid naturally
9Blackwood(4NT) 5C=0-4; 5D=1; 5H=2; 5S=3
10Doublemust have opening count and 4-card support for the other major
11RedoubleShows 10-12 points and no support for partner's suit
12Stolen Bid DoubleUsually after NT (see below)
13Negative DoublesSee Below
14Limit RaisesSee Below
15Preempt BidsWeak bids (see below)
16Balancing DoubleSee below
17Garbage StaymanAfter 1NT,under 8 HC pts, at least a Singleton club (4+4+4+1) bid 2C
18Weak Freak5-card support, 6-9 points plus a singleton or doubleton - Majors only


StaymanYour partner opens 1 NT, with at least 8 points you bid 2C asking for a 4 card major, if you have one. As opener you only have 3 possible bids: 2D w/ no 4 card major, or 2H or 2S. If partner opens 2NT, biding 3C is still Stayman
  
TransfersIn response to 1 NT, a bid of 2D transfers to Hearts, 2H transfers to Spades (must have at 5 card suit to transfer to majors).

If playing transfers to minors, you must have a 6-card suit. Here, you bid 2S to transfer to clubs; 3C to transfer to D
  
Texas TransferWhen you know game is possible but not slam– after NT bid 4 D or 4 H to transfer (6 cards plus 10 – 15 points). This works best after an interference bid.
  
Michael’s Cue Bid1C or 1D is over called by 2C or 2D means I have 2 five card majors
1H or 1S is over called by 2H or 2S means I have the 5 of the unbid major & 5 of an unknown minor. You should have at least 7 HCP to do this.
  
Unusual NT1H or 1S is over called by 2NT means I have both minors (a 2 suit hand w / 7+ points)
  
Jacoby 2NTPartner opens 1 of a major suit; you respond with 2NT – this shows opening points, 4-card support, & semi-balanced hand
  
 Opener responds (w/ unbalanced hand):
 @ 3 level in a new suit shows a singleton or a void
 @ 4 level in a new suit shows 5-card suit with 2 honors
  
 Opener responds (w/ balanced hand):
 Jump to 4 of your partner’s agreed major w/ minimum opening bid
 Go to 3 NT w/ 15 – 17 points
 Rebid 3 of the major w/ 18+ points showing interest in Slam
  
Help Suit Game TryWhen opening w /16+ points, & Partner bids 2 in your suit showing 6-9 points;
you bid at 3 level looking for support in that 2nd suit - With winners in your 2nd suit, partner goes to game in 1st suit, otherwise he bids 3 & you pass
  
GerberAfter 1, 2 or 3NT, bid 4C asking for Aces (5D=0-4; 5H=1; 5S=2; 5NT=3)
  
BlackwoodYou bid 4NT asking aces. Responses are: 5C=0-4; 5D=1; 5H=2; 5S=3
  
DoubleShows opening count & a 4-card support for the other major w/ stopper or shortage in opponent's suit. When doubling 1NT, you should have at least 16 pts.
  
RedoubleShows 10-12 points and no support for partner's suit
  
Negative DoubleONLY In the 3rd or 4th seat after 2 other suits were bid, shows at least 8 points plus having the other 2 unbid suits
  
Stolen Bid DoubleYour partner opens 1NT, opponent bids 2C, 2D, 2H, or 2S; that’s what you wanted to bid, so you Double, telling your Partner he stole my bid.
  
Limit Raise1H to 3H shows 10-12 points & 4 card support for Hearts
Go to 3, after an intervening bid, if you have 4-card support & 6 -9 points
1H, 1S, 2S-Is a Cue Bid showing 10 - 12 points & 4 H's
(going to 3 level is safe w/ 9 trump)
  
Preemptive BidsWeak 2 (7-11 points - six cards w/2 honors) - A 2NT RESPONSE IS ASKING FOR A FEATURE (if none rebid your suit)
  
 Weak 3 (7 cards in suit, plus 5-9 points)
 Weak 4 (8 cards in suit, plus 5-9 points)
  
Balancing DoubleAfter LHO opens, followed by 2 passes, you can double (with at least 8 points) assuming your partnership has enough points to compete at the 1 level.