BIDDING CONVENTIONS

When playing with Tara McMahon Our card
Green Fairly standard conventions (often SAYC)
Yellow Advanced conventions
Orange Conventions to use with established partners

OPENING BIDS AND RESPONSES

1N opening 15-17hcp balanced (may have 5cd major), full writeup of 1N responses includes Stayman, transfers, Smolen, handling interference, Garbage Stayman. Nick's Garbarge Stayman notes
2N opening 20-21hcp balanced (may have 5cd major), full writeup of 2N responses.
Responding to 2N by 2 opener Standard NT systems (Stayman, transfers) are ON.
Responding to 2 opener "waiting" 2=At least 1 King; 2=bust; opener shows hand, then bid on.
Fourth suit forcing Bidding 4th suit - game-forcing, asks partner to describe hand (in priority order):
  • Raise partner's suit with 3 cards
  • Bid NT if 4th suit stopped
  • Raise 4th suit with 4 cards
  • Make most natural bid otherwise
EXCEPTION: 1 in this sequence: 1-1-1-1 is NOT forcing.
Help-suit game try When opener's 1-of-major opening is raised to 2, bidding another suit is the help-suit game try. It asks partner if he can "help" in that suit. Maybe you have a half-stopper, or Axxx, or whatever. It's a mechanism like splinters, for finding games (or even slams) with less than the normal 26 (or 32) HCP.
This could be used over a limit raise, if you are slamming?
Impossible Spade After this sequence, 1 - 1N (forcing) - 2 or 2
2 limit raise of the minor; with either 5+ clubs or 4+ diamonds. Responder can't have a Spade suit as they would have bid that instead of 1N.
3 or 3 8-9hcp raise or minor.
2 or 2N If neither of the above bids is correct, choose the appropriate one of these
Major openings partial writeup of 1 of major responses
Splinters
Raising with 3-card support (article by Dave Vidaver)
Minor openings Minor opening / major response scenarios
Minor opening / non-major response scenarios
Inverted minor raise shows 4-cd support, opening hand, denies 4-cd major.
2-way New Minor Forcing Improvement to New Minor Forcing Writeup at La Jolla Bridge Club website
Reverse Drury Over 3rd/4th seat major-suit opener, 2 asks if it's a full opener. Promises 3+ card support w/ 10+ hcp. Opener then responds
2Full 13+ opener
2suitLight opener
2Special case if Spade opener -- shows good opener w/ 4-cd Heart suit.
Responder continues as needed. Notes:
1. if responder holds long club suit they bid 2, then 3 over any bid by opener.
2. Drury is OFF over any interference.
Rule of 15 In 4th seat, open any hand where high card points plus the number of Spades is 15 or higher. Concept is that a weaker hand would have more Spades -- and can find a partial there.
Rule of 20 / (Rule of 22) When evaluating a borderline opening hand, add the number of cards in the two longest suits to the high card points. If that is 20 or higher, go ahead and open. Note: Jerry Helms recommends that you additionally have 2 quick tricks.

PREEMPTIVE BIDS AND RESPONSES

Feature ask (over weak 2s) Basic method for responder to find out strength of partner's weak 2 bid. With good hand, opener bids a "feature" -- suit with an Ace or King. With a lousy hand, opener rebids their suit.

[Note: some folks will bid a short suit as a feature -- make sure to discuss with your partner]

Preempt hand evaluation Opener:
  • count "playing" tricks:
    • Every card after 3rd in trump
    • Aces, supported Kings (Kx), covered Queens (AQx, KQx)
  • Then bid count +2 Vul, or +3 NotVul -- but don't go above a "game" bid in that suit
Responder: subtract 2 (Vul) or 3 (NotVul), then
  • Add quick tricks:
    • A, K, or Q of trump = 1 trick each
    • In other suits: AK=2, AQ=1.5, KQ=1, A=1, Kx=0.5
    • Singleton, with trump support = 1 trick
    • Void, with trump support = 2 trick
  • And bid or pass accordingly. Example: Vul, opener has 7 playing tricks -- opens 3; responder has 5 quick tricks -- bids 6
Rule of 2-3-4Ely Culbertson's rule on how high to make a preemptive call. Writeup at bridgehands.com
Weak 2s 6-card suit, usually a major. 5-10hcp normal range. Standard treatment - vulnerable should have 2 of top 3 honors. Experts disagree...

SLAM BIDDING

Roman KeyCard Blackwood (1430) 4N asks how many of 5 "controls" -- 4 aces & K of trump:
51 or 4
50 or 3
cheapest non-signoff 5-lvl bid is "queen ask" (iow over 5, 5 is ask)
5trumpNo Queen, unknown # of Kings
5NHave Queen, but no Kings
6suitHave Queen, and King of suit
52 or 5, no queen of trump
52 or 5, with queen of trump
5N "specific King ask" - guarantees all 5 controls
6suit (below trump)Kings of suit
6trumpNo kings below trump
6suit (above trump) Some partnerships agree that asking for Kings means a strong desire to get to 7.
Thus one can respond with a void ABOVE 6 of trump.
5Neven number with a useful void somewhere
6x (below trump)odd number with a void in this suit (iow 6 == void in clubs)
6trumpodd number with a useful void above trump suit (iow, if trump is , 6 == void in )
DOPI/ROPIHandle interference over Ace-asking bids:
DOPI over suit interference: (think D0P1) DBL=0, PASS=1, then up the line otherwise
ROPI over DBL interference: (think R0P1) RDBL=0, PASS=1, then up the line otherwise
Gerber 4 over NT opening asks for Aces 4=0 or 4; 4=1; 4=2; 4N=3.
Then, 5 asks for Kings.
Over response to 4, 4 means "bail out at 4N". See 1430 Gerber below if you want to avoid problems when the response is 4N and you can't bail.

INTERFERING WITH OPPONENTS BIDDING

Cappelletti (Hamilton) Common 1N interference bid:
2Long suit
2Both majors (min 4-4)
2 & a minor
2 & a minor
2NBoth minors
DBLPenalty
Michaels cue bid Showing 5-5 distribution; most of hcp should be in these suits
Over a major, shows other major & unspecified minor. 2N asks for minor.
Over a minor, shows BOTH majors.
Normally, hand is weak or strong. With intermediate hand, make an overcall instead.

Advancer makes minimum response with weak hand, otherwise jumps or cuebids.

Unusual NT Jump to 2N over 1-lvl bid 4N over pre-empt. Shows 5-5 in 2 lowest unbid suits; most of hcp should be in these suits.

HANDLING BIDDING INTERFERENCE

Interference over 2 Control responses are OFF; DBL == bust; PASS == have something; any other bid shows slam interest.
Jordan2N following takeout double of partner's opener, shows good support with 10+ hcp.
Negative Double Over 1 of minor and opponent's 1-level overcall, DBL promises:
1 - (1) - DBL 6+ hcp, and 4+ cards in BOTH majors
1m - (1) - DBL 6+ hcp, and either 1) 4 spades, or 2) weaker with 5+ spades
1m - (1) - DBL 10+ hcp, and either 1) 4 hearts, or 2) weaker with 5+ hearts
1 - (2) - DBL 8+ hcp, and 4+ cards in at least 1 major
1M - (2m) - DBL 8+ hcp, and 4+ cards in other major
1 - (2) - DBL 10+ hcp, and 4+ cards in BOTH minors
Responsive double Response to a takeout double or overcall, when opponents have bid & raised their suit.
1M - X - 2M - X is responsive double, scattered values, 4 cards in the other major and no long suits (because you would bid a 5-cd suit if you had it!).
When you double over partner's overcall (e.g., 1H - 1S - 2H - X), you should also be able to tolerate partner bidding their suit again (IOW, have 2+ cards in that suit.)
6-8 hcp at 2-level; 9+ hcp at 3-level
NOTE: if opponents have bid & raised a minor, the responsive double promises 4-4 in the majors.
Support double / redoubleOver interference following 1x - any - 1M - any, double shows 3-cd support. Ex: 1 - P - 1 - 2 - DBL shows 3-cd spade support.
Support redouble used over takeout-double interference. Ex: 1 - P - 1 - DBL - RDBL shows 3-cd heart support.
We play no upper limit on this type of double. NOTE: many players set the limit at 2 or 2
Unusual vs. Unusual (method 1)Mechanism for handling Michaels or Unusual NT interference (most common version I play):
Cue bid higher suit10+ hcp with a fit (iow, limit raise or better)
Cue bid lower suit, IF KNOWN10+ hcp, no fit
Raise our suitCompetitive with support
New suit (or new minor if 2nd suit not known)Invitational with 5cd suit
DoubleValues in one of opps. suit & ability to penalize opps. in one or both suits.
Pass Several possible hands:
  • Good defensive hand, but not sure if we can set them.
  • Lousy hand.
  • No other bid makes sense.

DEFENSIVE CARDING

Ace is led, singleton on board Against suit contracts, show suit preference.
A is for Attitude, K is for Count Against 5-level contracts or higher:
  • Ace is led. Partner shows attitude -- high suggests continue leading same suit
  • King is led. Partner shows count -- high implies even number.
Leading doubleton Ace-King Against suit contract, lead King from Ace-King to show doubleton.
Upside-down attitude (standard count) When giving attitude only, reverse the standard convention. I.e., attitude: high card discourages, low card encourages.
For count, use the standard echo: high-low means even count.

BALANCING

Balancing Nick's conceptual flowchart

Example of responses to balancing double (1) - 1 - (2) - P - (P) - DBL - (P) - ?
PASSWant to defend
2Weak (2cd+ support)
2NPick a minor
3 or 3To play

LINKS TO ACBL INFORMATION

ACBL site: acbl.org Standard American Yellow Card, Booklet
ACBL Alert Procedure

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