ACBL Standard Yellow Card System Booklet

Table of Contents
Overview
Choices
General Approach
Responses and later bidding after a 15-17 1NT Opening
Interference after 1NT opening bids
Responses to a 2NT or 3NT opening
Responses and later bidding after a 1 or 1 opening
Subsequenct bidding by responder
Responses to a 1 or 1 opening
A 2 opening, responses and later bidding
Sequence after a weak two-bid of 2, 2, or 2
Slam Bidding
Defensive Bidding
Competitive Bidding
Defensive Leads and Signals
Note

Revised September, 1988

OVERVIEW

The "ACBL Standard Yellow Card" game is one where all partnerships have agreed to play the system exactly as described in this booklet. The object is to provide a simple, modern method which will lead to a good, solid understanding in a partnership when both players have read this booklet.

The beauty of the event is that players know in advance not only their own bidding agreements, but those of their opponents. The game is free of complex bidding systems. There are few Alerts (none unexpected) and there should be a minimum of director calls.

(Few sequences are defined in the later rounds of "ACBL Standard Yellow Card" auctions. Players are free to assign forcing, invitational or non-forcing meanings to natural calls in such sequences. They are not, however, free to introduce their own sophisticated methods in these undefined areas.)

The relaxed spirit of the ACBL Standard Yellow Card game is best achieved by group cooperation. Contestants are encouraged to adhere to both the letter and the spirit of the game.

Players may still exercise their bridge judgments, such as in deciding to open a four-card major in third seat. The ACBL Standard Yellow Card "normally five-card majors" approach can withstand an occasional deviation. However players who routinely open a four-card major in third seat are not adhering to the spirit of the game. Similarly, partnerships that prefer to use light initial actions are expected to adjust their requirements or to choose the concurrent General Conventions Chart event.

Psychs are a sensitive subject to players in this event. A very rare, totally unexpected psych is not illegal, but pairs who wish to psych with any degree of frequency are encouraged to enter other games.

Please read the booklet before entering the game and understand that you have agreed to play the system as described. Enjoy!

CHOICES

If you are playing in an ACBL Standard Yellow Card game, you have only five choices to make. They involve defensive card play--see DEFENSIVE LEADS AND SIGNALS.

GENERAL APPROACH
Normally open five-card majors in all seats.
Open the higher of long suits of equal length: 5-5 or 6-6.
Normally open 10 with 4-4 in the minors.
Normally open 1 with 3-3 in the minors.
Notrump openings show a balanced hand and can be made with a five-card major or minor suit.

Strong artificial 2 opening.
Weak two-bids in diamonds, hearts and spades.

RESPONSES AND LATER BIDDING AFTER A 15-17 1NT OPENING

2 is "non-forcing" Stayman, meaning that the bidding can stop in two of a suit. Opener bids 2 with 4-4 in the majors. If responder rebids three of either minor, he is showing slam interest and at least a five-card suit.

Jacoby transfers showing a five-card suit are used for the majors: 2 is a transfer to hearts, 2 is a transfer to spades. Opener accepts the transfer though he can jump to the three level with 17 points and four-card support for responder's major, for example:

If, after the transfer is accepted, responder bids a new suit, that is natural and game forcing. Possible calls after the accepted transfer are:

A 2 response requires the 1NT bidder to rebid 3, which can be passed with a club bust, or responder can rebid 3 with a diamond bust. Example:

Other responses to 1NT:

If the player using Gerber makes any bid other than 5, that is to play (including 4NT).

A direct raise of 1NT to 4NT is natural and invites 6NT. 4NT is slam invitational only because 4 is available as Gerber.

INTERFERENCE AFTER 1NT OPENING BIDS

If the opponents double, all conventional responses are "on." For example:

1NT -- (double) -- 2 = (Stayman). -- 2 = (transfer to hearts)

If the opponents bid over your 1NT opener, Stayman and transfers are "off." Bids are natural except for a cuebid, which can be used with game force strength as a substitute for Stayman.

If the opponents intervene over a conventional response, bids carry the same meaning as if there were no intervention. A bid says, "I'm bidding voluntarily, so I have a real fit with you."

RESPONSES TO A 2NT OR 3NT OPENING

Stayman and Jacoby transfers for the majors are used.

RESPONSES AND LATER BIDDING AFTER A 1 OR 1 OPENING 1 and 1 openings show a five-card or longer suit. Responses:

Opener's rebids are natural and standard. Rebids with a minimum hand (13-16 points):

Rebids with a medium hand (17-18) points:

With a maximum hand (19-21 or 22 points) opener must make a very strong rebid:

Responder follows up by attempting to sign off in game, bidding 4NT Blackwood, or cuebidding if still interested in trying to cooperate with opener in making the slam decision.

SUBSEQUENT BIDDING BY RESPONDER
If responder has bid a suit at the one level, he next determines whether he wishes to sign off in a partscore, invite game, sign off in game, or force to game and get more information about opener's hand. Having made his choice, he selects the best available bid.

Bids available for signoff in partscore: Pass, 1NT, 2 of a previously bid suit.

Bids available for inviting game: 2NT, 3 of a previously bid suit:

Second-round forcing bids. A new suit response (other than after a 1NT rebid by opener) is a one-round force. If it is a fourth suit in the auction, it may be artificial.

Second round forcing bids following a 1NT rebid by opener: A reverse or jump shift into a new suit is a game force.

Bids available for signing off in game. 3NT, 4H, 4S, 5, 5.

If responder initially bids a new suit at the two level, the same rules apply EXCEPT that a subsequent jump raise of opener's first suit to the THREE LEVEL is game forcing (responder should make a limit raise directly over the opening with 10-12 points and at least three-card support):

NOTE: Responder promises to bid again if he responded with a new suit at the two level unless opener's rebid is at the game level.

RESPONSES TO A 1 or 1 OPENING

A 1 opener suggests a four-card or longer suit, since 1 is preferred on hands where a three-card minor suit must be opened. The exception is a hand with 4-4-3-2 shape: four spades, four hearts, three diamonds, and two clubs, which should be opened 1.

Responses and later bidding generally follow the ideas set down in the previous section. Bidding at the one level is up-the-line in principle. Responder needs more trumps to raise (4 to raise 1; 5 to raise 1 , though one less trump will do in a pinch in a competitive sequence). Responses of 2NT and 3NT are standard:

There is no forcing minor-suit raise.

A 2 OPENING, RESPONSES AND LATER BIDDING

A 2 opening shows at least 22+ points, or the playing equivalent. Responses:

If opener rebids 2NT after a 2 response (showing 22-24 points), the same responses are used as over a 2NT opening:

If opener rebids a suit over a 2 response, the bidding is forcing to 3 of opener's major or 4 of opener's minor.

SEQUENCE AFTER A WEAK TWO-BID OF 2, 2H, OR 2S

Weak two-bids show a six-card suit of reasonable quality and 5-11 HCP. On rare occasions it may be a very good five-card suit. It is possible to open a weak two with a poor seven-card suit (not good enough to open with at the three level). Responses:

With no fit for responder's suit, opener rebids:

SLAM BIDDING

Blackwood 4NT is used to ask for aces. Responses show the number of aces by steps. 5NT is then used to ask for kings; 5NT guarantees the partnership holds all four aces. 

    --  --  --                  --  --  --
    --  --  4NT                 --  --  4NT
                                5x  --  5NT
    5 = 0 or 4 aces            6 -- 0 or 4 kings
    5 = 1 ace                  6 -- 1 king
    5 = 2 aces                 6 -- 2 kings
    5 = 3 aces                 6 -- 3 kings

A jump to 5NT (and some 5NT bids when the auction is at the five level) is "Grand Slam Force", asking partner to bid a grand slam with two of the three top trump honors;

DEFENSIVE BIDDING

Overcalls show 8-16 points (double and bid the long suit with a stronger hand). The only forcing response is a cuebid of opener's suit, asking the overcaller about the quality of his overcall:

A 1NT overcall shows 15-18 points and a balanced hand (preferably a stopper in opener's suit). No artificial responses are used to the 1NT overcall except 2, which is Stayman.

A jump overcall of 2NT shows at least 5-5 in the lower two unbid suits.

Jump overcalls are preemptive, showing the same values as an opening bid at the same level:

A cuebid overcall when the opponents have bid two suits is natural in either suit.

A cuebid overcall, when the opponents have bid only one suit, is a "Michaels cuebid", showing a 5-5 two-suiter (or more distributional). If the opening is in a minor suit, the cuebid shows the majors; if the opening is in a major, the cuebid shows the other major and an unspecified minor.

Reopening bids mean much the same as direct seat bids, though they can be lighter at the minimum end. A reopening 1NT after an opponent has opened shows 10-15 points. This is a wide range but there will not usually be a game on for you.

Doubles are for takeout over opening partscore bids (4 or lower); penalty over opening game bids (4 or higher). A below-game jump response to a takeout double is invitational. To force, responder cuebids opener's suit.

Versus opening preempts, overcalls in suits or notrump are natural; cuebids are Michaels.

COMPETITIVE BIDDING

There is almost an endless variety of possible sequences, so it pays to have simple guidelines to prevent bidding misunderstandings:

Bids mean the same thing they meant without the intervening bid. However it is sometimes necessary to pick a bid that would normally have been a second choice without the overcall:

Cuebidding RHO's suit shows values for game without clear direction for the moment. This is often used to show a game-forcing raise:

Negative doubles are used through 2 promising four cards (at least) in any unbid major. Bidding a major at the two level or higher shows 11 or more points and a five-card or longer suit.

If RHO makes a takeout double:

A responder's jump shift after a double is to play:

A redouble can have one of three meanings:
To play if:

A good hand if their double is for takeout:

SOS, requesting a different suit, if your side is doubled for penalty in a trump suit at the three level or lower:

Unless otherwise noted elsewhere, any bid or double by the opponents cancels a convention intended for non-competitive sequences.

Examples: 1 -- 1 -- 2NT = Natural (12-14 HCP). 2 -- Double -- 2 = Natural and Positive.

If the opponents use a convention (such as Michaels or the unusual notrump), you can double to show at least 10 points, or you can cuebid one of their shown suit(s) to force to game.

DEFENSIVE LEADS AND SIGNALS

This is the one area where choices are offered. The following are specified: Defensive signals when following suit or discarding are "high encourages, low discourages." Leads are top of touching honors (with choices from AKx and interior sequences).

Pairs must choose from the following options. Where no card is pre-marked in bold italics, pairs must mark their leads.

It is Declarer's responsibility to look at opponents' carding agreements. In the absence of a circle, cards in bold italics are presumed to be the agreement.

NOTE

If you are playing the ACBL Standard Yellow Card in an open game, you may add defenses to opponents' conventions (e.g., Unusual vs. Unusual, and Mathe over big club). Put these convention-defenses in the section "Defenses vs. Opp's Conventions" on the left-hand side of the convention card.

SP3 Rev 9/88

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