Convention Card

OPENING LEADS
(For all the card combinations shown, clearly mark the card normally led if different from the underlined card).	Colour this box if using non-standard leads

v. all contracts	A K	A K x	K Q 10	K Q x	A J 10	K J 10	A K J 10
	A 10 9	K 10 9	Q 10 9	Q J 10	Q J x	J 10 x
	H x x	H x x x	H x x x x	H x x x x x
	10 x x	10 9 x	9 8 7 x	10 x x x
	? x	x x x	x x x x	x x x x x
Other agreements in leading, e.g. high-level contracts, partnership suits:
King requests unblock/count [against NT], count [against suit contract]. Lead of queen against NT may be from K Q x x x.
10 not an honour; 9 promises 10 or shortage. Strong 10 leads from AJ10, KJ10.

CARDING METHODS
	Primary method v suit contracts	Primary method v NT contracts
On Partner's lead	High encourage, low discourage [unless lead is king]
On Declarer's lead	Count; high/low shows even number.
When discarding	Revolving [low cards not necessarily significant]
Other carding agreements, including secondary methods (state when applicable) and exceptions to above
McKenney where appropriate.

SUPPLEMENTARY DETAILS [2]
2.1	2♣ followed by 3-either-minor is natural and game-forcing. Following a 2♦ rebid, 3-major shows 5-card suit with 4-card other major.
2.2	3♣/2NT/3-major shows 4-card support, max/max4333/min respectively. Over 3♣/2NT, responder may re-transfer, trial bid, splinter, etc. Transfer to one major then bidding the other shows 5-5; 2♠ following transfer to hearts is invitational with 8-11 pts.
2.3	Bid shows suit bid plus next higher suit, min 4-4. Pass forces redouble, which is either passed, or 2-suit shows that suit plus higher, non-touching suit. Redouble is relay to 2♣ for pass or correct
2.4	After our 1NT is overcalled, 2NT from responder asks opener to relay to 3♣, then all bids are relatively weak. Cue-bids are Staymanic. Cue-bids and 3NT deny stop if preceded by 2NT. Direct 3-level suit bids are forcing. 3-level suit bids preceded by 2NT are to play, but invitational if suit could have been bid at 2-level. Double is take-out of overcaller's explicit or inferred suit. 2-level cue bid is 2NT without stop.
2.5	Suit rebid after 2♣ opening shows # of playing tricks and is non-forcing.
2.6	Ogust 2NT over 2♦/♥/2♠	3♣/3♦ = min HCP; poor/good suit ['good' = 2 of top 3]
		3♥/3♠ = max HCP; poor/good suit. 3NT=AKQ of suit.
2.7	3♣ asks for 5-card major 3♦ rebid promises at least one 4-card major. If responder also has a 4-card major, he/she bids the other, or 4♣/♦ with both. 3♥ denies both 4- and 5-card major, 3NT shows 5 hearts. Over responder's 3♦ transfer, opener's 3♠ rebid shows 5 spades with < 3 hearts. After either 3♦/3♥ opener breaks transfer with 3+ trumps. After 3♠ response, opener's 3NT = no minor-suit slam interest, or 4♣/♦ = Minorwood


Evelyn Crossley 405489	Nigel Lancaster 74784

GENERALISED DESCRIPTION OF BIDDING METHODS

Weak 2♦/♥/♠. 5-card ♠ suit.

1NT OPENING AND RESPONSES

Strength:

12-14

Tick if artificial and provide details below:

Shape constraints:

May have any 5-card suit

Cannot contain singleton

Responses:

2♣

Stayman [promissory] [see 2.1]

2♦	Transfer to hearts [see 2.2]	2♥	Transfer to spades [see 2.2]
2♠	Invitational/minor suit transfer	2NT	Enquiry for 5-card major
Others	3-any-suit is slam try. Rebid is 3NT [no interest] or stepped RKCB response.

Action after opponents double:	Helvic: pass forces redouble [see 2.3].
Action after other interference:	Take-out double; Lebensohl [see 2.4]

TWO-LEVEL OPENINGS AND RESPONSES
	Meaning	Responses
2♣	8+ playing tricks any suit or 23+ balanced	2♦=relay. Opener's rebid non-forcing.	2.5
2♦	Weak, 5-9 NV, 6-10 Vul. Usually 6-card suit. Wider-ranging in 3rd position. 10-14 in 4th position.	2NT = Ogust enquiry. New suit response is 1-round force seeking 3-card support.	2.6
2♥
2♠
2NT	20-22, may contain any 5-card suit	3♣=5-card Muppet Stayman 3♦/♥ are transfers; 3♠=minors	2.7

OTHER ASPECTS OF SYSTEM WHICH OPPONENTS SHOULD NOTE

4-card suits are bid up the line.

3rd-seat openings may be stretched.; after opening of 1♥/1♠, 2♣ is Drury asking bid

29 Jun 2026