Introducing a new convention: Lee Two Diamonds

[Vampyr]

the regulations of the South African Bridge League (that also govern the play at your club).

 

This is not clear. Clubs in SA might have the right to establish their own policies wrt systems.

[Trinidad]

This is not clear. Clubs in SA might have the right to establish their own policies wrt systems.

As we can read in gwnn's post #70 clubs can establish their own systems policies, under the condition that they are more restrictive.

 

So, if it isn't allowed in the SA BL it cannot be allowed in the club. If it is allowed in the SA BL, it might still be disallowed at the club.

 

Rik

[Vampyr]

As we can read in gwnn's post #70 clubs can establish their own systems policies, under the condition that they are more restrictive.

 

So, if it isn't allowed in the SA BL it cannot be allowed in the club. If it is allowed in the SA BL, it might still be disallowed at the club.

 

Rik

 

The quote does not seem to preclude the possibility of clubs being less restrictive.

[Trinidad]

The quote does not seem to preclude the possibility of clubs being less restrictive.

Technically, you are correct about that. (Though the text of the quote would seem strange if clubs would be allowed to have less restrictive regulations.)

 

Therefore, I looked up the regulation myself. It starts out with:

 

The purpose of these regulations is to create uniformity in the definition of bids and acceptability of conventions throughout the bodies under the jurisdiction of the South African Bridge Federation and at tournaments run by such bodies. These regulations are promulgated under the authority awarded to Sponsoring Organisations in terms of Law 40 and Law 80 of the Laws of Duplicate Bridge.

During any tournament, these regulations shall be applied by the Tournament Director and in appeals being considered by an Appeals Committee.

(Emphasis is mine)

 

A little further down, we find the following:

DISALLOWED BIDS AND BIDDING METHODS

The following bids or methods are disallowed and are subject to adjusted scores and/or penalties:

[]

Highly Unusual Methods (HUM) and Brown Sticker systems, as defined by the World Bridge Federation, except where specifically allowed in Category A events. See page 10;

 

And on page 10 we see that a club does not have the power to classify their club night as a Category A event:

Category A events

Quarter-final, semi-final and finals of team's events at regional and national level, where not fewer than 28 boards are played per session (unless screens are in use when boards may be 24) or any event specifically designated as a CATEGORY A event by the Executive of the S.A.B.F. Any OTHER event is a CATEGORY B event.

So, unless the Executive of the SABF has specifically classified the club night for 32519's bridge club as a Category A event (unlikely) or 32519's club does not fall under the jurisdiction of the SABF (what do I know?), I would conclude that 32519 is not allowed to play the Lee 2♦ at his club.

 

But if 32519 is going to play it anyway and appeal a TD's decision, who am I to stop him?

 

Rik

[Vampyr]

I am surprised than an NBO prohibits clubs from adopting more relaxed system regulations. Where besides at clubs can new things be tried?

[32519]

I’ve been doing some reading on “System Policies” on the WBF website.

 

Paragraph 2.3 deals with “Classification of Systems.” This is what it says for a system classified as Red:

 

Red Artificial: this category includes all artificial systems that do not fall under the definition of Highly Unusual Methods (HUM) systems [see definition below], other than Strong Club/Strong Diamond systems (see ‘Blue’).

 

Examples would be a system where one club shows one of three types - a natural club suit, a balanced hand of a specific range, or a Strong Club opener; or a system in which the basic methods (other than the no trump range) vary according to position, vulnerability and the like; or a system that uses conventional 'weak' or 'multi-meaning' bids (with or without some weak option) in potentially contestable auctions, other than those described in the main part of the WBF Convention Booklet.

 

[so if I can get my system classified as “Red” seems like I can play this bid freely under WBF regulations? How would “Red” stand up in the EBU or ACBL?]

 

Paragraph 2.4 deals with “Brown Sticker Conventions and Treatments.” This is what paragraph a says:

 

The following conventions or treatments are categorised as ‘Brown Sticker’:

a) Any opening bid of two clubs through three spades that:

i) could be weak (may by agreement be made with values below average strength) AND [32519 says, note the word “AND”]

ii) does not promise at least four cards in a known suit.

EXCEPTION:

The bid always shows at least four cards in a known suit if it is weak. If the bid does not show a known four card suit it must show a hand a king or more over average strength. (Explanation: Where all the weak meanings show at least four cards in one known suit, and the strong meanings show a hand with a king or more above average strength, it is not a Brown Sticker Convention.)

EXCEPTION: a two level opening bid in a minor showing a weak two in either major, whether with or without the option of strong hand types containing 16 high card points or more, or with equivalent values. Defensive measures are permitted for opponents as in 6 below.

 

Things are looking decidedly good so far, because whenever the hand is weak it meets the requirements of paragraph (a) with flying colours: when weak, the suit is always diamonds, and the suit has a minimum of six cards in it. No problem.

 

So now we need to assess if the three strong hand patterns pass the Brown Sticker test as set out by the WBF.

 

Here is their test:

Quote: “If the strong meanings show a hand with a king or more above average strength, it is not a Brown Sticker Convention.”

 

Here two of the three strong hand patterns pass the test with flying colours i.e.

1. A 4441 hand pattern with 16+ HCP

2. A big 5/5 hand pattern in the minors with 14+ HCP

3. 6/4 hand pattern in the majors, 10-15 HCP

 

At first glance the third hand pattern fails the test. Ah, not so fast. Look at that quote again: “If the strong meanings show a hand with a king or more above average strength, it is not a Brown Sticker Convention.”

 

SO THE HINGE TO THIS BID OF MINE NOT BEING DECLARED AS BROWN STICKER NOW DEPENDS ON THE WBF DEFINITION OF, “IT MUST SHOW A HAND A KING OR MORE OVER AVERAGE STRENGTH.”

 

Paragraph 2.1 describes what an average hand is. This is what it says –

Average Hand – a hand containing 10 high card points (Milton Work) with no distributional values

 

I’ve underlined it for you. Read it again, “with no distributional values.”

Bingo! There you have it. A 6/4 hand pattern (and that in the majors) is decidedly distributional, and decidedly provocative for the opponents.

 

To summarise:

For every event run by the WBF I can play this convention –

1. In a system classified as Red, or

2. Any system as it passes the Brown Sticker test by the proverbial country mile.

[Zelandakh]

The system classification is independent of whether an opening is classified as Brown Sticker. This is meant for multi-way one level openings such as Polish Club.

[manudude03]

 

Average Hand – a hand containing 10 high card points (Milton Work) with no distributional values

 

I’ve underlined it for you. Read it again, “with no distributional values.”

 

 

You misunderstand it, it means 10 HCP without adding any points for distribution (ie. 9HCP + 1 for a doubleton does not count). So your majors option must still be 13+ HCP before you add distribution points.

[hrothgar]

I’ve been doing some reading on “System Policies” on the WBF website.

 

Congratulations! You've now caught up to the points that folks were trying to explain to you two weeks ago!

 

To summarise:

For every event run by the WBF I can play this convention –

1. In a system classified as Red, or

2. Any system as it passes the Brown Sticker test by the proverbial country mile.

 

Despite your protestations to the contrary, a 6-4 10 count is not a King more than average strength.

 

To save time typing, I'm going to attached the same comment that I made back on February 3rd

 

I would be surprised if you are able to convince the WBF that a 6-4 10 count qualifies as a strong hand. I would also be surprised if Bridgeguys is an authorative source regarding WBF system policy.

 

Regardless, your best option is probably to submit a direct question to the WBF and ask them whether they consider the Lee 2♦ opening to be a BSC.

Please let us know what they have to say.

 

BTW, I'd be very interested in knowing the name of the bridge club where you supposedly play.

 

While your little anecdotes are amusing, I've seen far too many claims about "Lee 2♦ openings" leading to slams that 15-16 pairs missed.

 

I must admit that I have a mental picture of you squatting out in the bush, hurling playing cards, invectives, and feces at a group of bewildered meerkats...

[gwnn]

To be fair, the slams that the 15 out of 16 pairs miss are usually quite awful. So these supposed meerkats would have relatively good judgement.

[phil_20686]

To be fair, the slams that the 15 out of 16 pairs miss are usually quite awful. So these supposed meerkats would have relatively good judgement.

 

Can't be meercats. Everyone knows meerkats are chronic overbidders.

[Zelandakh]

Can't be meercats. Everyone knows meerkats are chronic overbidders.

They fall foul of 74C5 a lot too. Good idea to hold your cards up when against them!

[32519]

I ran 250 hands through BBOs deal generator with the following constraints; Dealer = South, 4441 distribution, 16+ HCP, no constraints on the other three hands;

to get an idea of the HCP spread between the three remaining hands every time opener has the 4441 hand pattern with 16+ HCP:

 

These are the numbers –

HCP NR. ODDS %

0-3 27 10.800%

4-7 108 43.200%

8-11 88 35.200%

12+ 27 10.800%

 

250 100.000%

 

0-7 135 54.000%

8+ 115 46.000%

 

250 100.000%

 

 

The ranges were chosen with the following in mind:

1. Every time opener has exactly 16 HCP and responder has 0-3, the opponents have the majority of the HCP

2. Every time opener has exactly 16 HCP and responder has 4-7, our side has equal or the majority of the HCP but a tad short of combined game values

3. Every time opener has exactly 16 HCP and responder has 8-11, our side is in GF territory (pretty much equivalent to a Precision 1C opener and a positive response from partner)

4. Every time opener has exactly 16 HCP and responder has 12+, our side must be entering slam zone whenever the combined HCP are held in the right combination

 

Because the aggregate of the 0-7 HCP range (54%) is slightly higher than the 8+ HCP range (46%), I am considering reverting back to my original idea, where, in the following bidding sequence –

2D-2M-2NT-3C

2NT shows the 4441 hand pattern, and 3C shows 0-7 HCP

After 3C, the continuation bidding becomes Baron, with both partners bidding 4-card suits up the line in search of the first 4-4 fit. Zel’s suggestion leads to much more constructive auctions whenever responder has 8+ HCP.

 

I have posted this here to get some help and suggestions from you guys.

[hrothgar]

I ran 250 hands through BBOs deal generator with the following constraints; Dealer = South, 4441 distribution, 16+ HCP, no constraints on the other three hands;

to get an idea of the HCP spread between the three remaining hands every time opener has the 4441 hand pattern with 16+ HCP:

 

I would be surprised if there is a strong relationship between South's shape and the distribution of HCP's between North and South.

I would be equally surprised to discover a linkage between the distribution of strength between North and South and the distribution of strength between East and West.

 

Personally, I'd recommend that you track the following

 

1. The conditional probability that N/S holds 16, 17, 18, ... HCPs given that South holds "foo" points

2. The standard deviation of East's HCPs given that N/S holds 16, 17, 18, 19, ... HCPs

[gwnn]

http://statswithcats.files.wordpress.com/2013/09/content-busy-cat-19.jpg

 

I miss jjbrr

 

[32519]

How about another hand from a club game:

 

Final contracts were; 1/13 in 5♦X, 7/13 in 5♦, 2/13 in 4♥, 2/13 in 4♠

From the traveller, it would appear that at 8/13 tables the auction must have gone something along these lines –

1♥-(2NT)-P-(3♦)

3♥-(5♦)-P-(P)

 

How about this auction from the last table?

 

[hv=pc=n&s=sq9874ht64dq52c42&w=st2hj53dakj76c965&n=skj53hak9872dcqt8&e=sa6hqdt9843cakj73&d=n&v=n&b=5&a=2d(Lee%202D)3cp4cppp]399|300[/hv]

 

As the cards lie, 6♦ is there to be made.

[Antrax]

Seems like a case for unusual 2NT, which if memory serves is a convention that only helps the opponents. Odd.

[Zelandakh]

How about this auction from the last table?

How do you think the auction goes if West bids 3♦ rather committing to 4m with a balanced hand and no slam interest?

[Vampyr]

325, are you still playing this convention without having found out whether it is legal?

[32519]

LEE TWO DIAMONDS - CONVENTIONAL SUMMARY

 

This chapter is added as a quick reference as to how the bidding should proceed after the auction as been opened with an artificial 2♦ promising one of the following hand patterns:

• A natural Weak 2♦, a 6 or 7-card suit with 6-11 HCP (the reason for the inclusion of a possible 7-card suit is covered in chapter 10)

• 6♥ and 4♠, 10-15 HCP

• 6♠ and 4♥, 10-15 HCP

• A strong 3-suited hand, 16+ HCP

• 5+♣ and 5+♦, 14+ HCP

 

The continuation bidding for each hand pattern opened will always be governed by the following:

• Direct opposition intervention over the opening bid

• Responders actual hand strength and distribution

• The degree of fit with opener once the actual hand pattern opened is revealed

• Vulnerability

 

Remember that the anchor suit is diamonds. Also remember that the opening bid is forcing for one round without opposition intervention unless you are dealt a hand completely useless outside of a diamond contract. Then, and only then, may you pass the opening bid.

 

The following rules are set out for the continuation bidding structure:

• Pass with a hand completely useless outside of a diamond contract

• With equal length in the majors, 2-2, 3-3 or even 4-4, always start your response off with 2♥ in order to keep the bidding as low as possible (the reason for doing so is demonstrated in hand 10 in chapter 5)

• With unequal length in the majors, always bid the longer one first

• With suit length and HCP concentrated in the minor suits, 10-13 HCP, bid 2NT to invite game

• With a single suited hand in clubs, hearts or spades, bid to the appropriate level

• With suit length and HCP concentrated in the minor suits, 14-15 HCP, bid game in 3NT

• With a 7-card diamond suit and little else, lift the pre-empt to 3♦

• With an 8-card diamond suit and little else, lift the pre-empt to 4♦

• With a 9-card diamond suit and little else, lift the pre-empt to 5♦

 

A natural Weak-Two in Diamonds has been opened

 

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

• 2♠ = Longer major

o Continuation bidding by opener

 3♦ = Attempted signoff, a natural weak 2♦ opened

• Continuation bidding by responder

o 3NT = To play, 3-card diamond fit

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 5♦ = To play, signoff

• 3♣/3♥/3♠ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

 

The 6♥ and 4♠ hand pattern has been opened

 

• Pass = Diamond bust, hand completely useless outside of a diamond contract

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

o Continuation bidding by opener

 3♥ = 6-card heart suit, game invitational

• Continuation bidding by responder

o Pass = Poor hand

o 3NT = Asking for short minor, slam interest

o 4♥ = To play

o 4♠ = Kickback for hearts, slam try

• 2♠ = Longer major

o Continuation bidding by opener

 3♥ = 6-card heart suit

• Continuation bidding by responder

o Pass = Poor hand

o 3♠ = To play on a 4-4 spade fit, poor hand

o 3NT = Asking for short minor, slam interest

o 4♥ = To play

o 4♠ = To play

o 4NT = 6-card RKCB

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 Pass = No fit, minimum hand, 10-13 HCP

 3NT = To play, maximum hand, 14-15 HCP

• 3♣/3♦/3♠ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

o Continuation bidding by opener

 Pass = No fit

 4♠ over 3♠ = To play, minimum hand, 10-13 HCP

 4NT over 3♠ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

• 3NT = Suit length and HCP concentrated in the minors, 14-15 HCP

o Continuation bidding by opener

 Pass = To play, no fit

 

The 4♥ and 6♠ hand pattern has been opened

 

• Pass = Diamond bust, hand completely useless outside of a diamond contract

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

o Continuation bidding by opener

 2♠ = 6-card spade

• Continuation bidding by responder

o Pass = Poor hand

o 2NT = Asking for short minor, game / slam interest

o 3♥ = To play on a 4-4 heart fit, poor hand

o 4♥ = To play

o 4♠ = To play

o 4NT = 6-card RKCB

• 2♠ = Longer major

o Continuation bidding by opener

 3♠ = 6-card spade suit, game invitational

• Continuation bidding by responder

o Pass = Poor hand

o 3NT = Asking for short minor, slam interest

o 4♠ = To play

o 4NT = 6-card RKCB

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 Pass = No fit, minimum hand, 10-13 HCP

 3NT = To play, maximum hand, 14-15 HCP

• 3♣/3♦/3♥ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

o Continuation bidding by opener

 Pass = No fit

 4♥ over 3♥ = To play, minimum hand, 10-13 HCP

 4♠ over 3♥ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

• 3NT = Suit length and HCP concentrated in the minors, 14-15 HCP

o Continuation bidding by opener

 Pass = To play, no fit

 

The 4441 hand pattern has been opened (4♠-4♥-4♦-1♣)

 

• Pass = Diamond bust, hand completely useless outside of a diamond contract

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the heart suit, otherwise to bid 3♠ when the singleton is hearts

o 3♦ = Poor hand, diamond suit longer than heart suit

• 2♠ = Longer major

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the spade suit, otherwise to bid 3♥ when the singleton is spades

o 3♦ = Poor hand, diamond suit longer than spade suit

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 4♦ = Slam try in diamonds bid, responses are 6-card RKCB

 5♦ = To play, holding in the major suits considered too weak to make a slam try

• 3♣/3♦/3♥3♠ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

o Continuation bidding by opener

 Pass over 3♣ = To play, singleton club

 4♦ over 3♦ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 4♥ over 3♥ = To play

 4♠ over 3♥ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 4♠ over 3♠ = To play

 4NT over 3♠ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 5♦ over 4♦ = To play

• 3NT = Suit length and HCP concentrated in the minors, 14-15 HCP

o Continuation bidding by opener

 4♦ = Slam try in diamonds, responses are 6-card RKCB

 5♦ = To play, holding in the major suits considered too weak to make a slam try

 

The 4414 hand pattern has been opened (4♠-4♥-1♦-4♣)

 

• Pass = Diamond bust, hand completely useless outside of a diamond contract

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the heart suit, otherwise to bid 3♠ when the singleton is hearts

o 3♦ = Poor hand, diamond suit longer than heart suit

• 2♠ = Longer major

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the spade suit, otherwise to bid 3♥ when the singleton is spades

o 3♦ = Poor hand, diamonds suit longer than spade suit

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 4♣ = Slam try in clubs, responses are 6-card RKCB

 5♣ = To play, holding in the major suits considered too weak to make a slam try

• 3♣/3♦/3♥3♠ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

o Continuation bidding by opener

 Pass over 3♦ = To play, singleton diamond

 4♣ over 3♣ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 4♥ over 3♥ = To play

 4♠ over 3♥ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 4♠ over 3♠ = To play

 4NT over 3♠ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 5♣ = To play

• 3NT = Suit length and HCP concentrated in the minors, 14-15 HCP

o Continuation bidding by opener

 4♣ = Slam try in clubs, responses are 6-card RKCB

 5♣ = To play, holding in the major suits considered too weak to make a slam try

 

The 4144 hand pattern has been opened (4♠-1♥-4♦-4♣)

 

• Pass = Diamond bust, hand completely useless outside of a diamond contract

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the heart suit, otherwise to bid 3♠ when the singleton is hearts

o 3♦ = Poor hand, diamond suit longer than heart suit

• 2♠ = Longer major

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the spade suit, otherwise to bid 3♥ when the singleton is spades

o 3♦ = Poor hand, diamonds suit longer than spade suit

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

• 3♣/3♦/3♥3♠ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

o Continuation bidding by opener

 Pass over 3♥ = To play, singleton heart

 4♣/4♦ over 3♣/3♦ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 4♠ over 3♠ = To play

 4NT over 3♠ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 5♣/5♦ = To play

• 3NT = Suit length and HCP concentrated in the minors, 14-15 HCP

o Continuation bidding by opener

 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

 

The 1444 hand pattern has been opened (1♠-4♥-4♦-4♣)

 

• Pass = Diamond bust, hand completely useless outside of a diamond contract

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the heart suit, otherwise to bid 3♠ when the singleton is hearts

o 3♦ = Poor hand, diamond suit longer than heart suit

• 2♠ = Longer major

o Continuation bidding by opener

 2NT = Big 4441 hand pattern

• Continuation bidding by responder

o Pass = Poor hand, unable to improve the final contract for fear of getting too high when no fit found

o 3♣ = Equivalent to Stayman, asking for 4-cards in the spade suit, otherwise to bid 3♥ when the singleton is spades

o 3♦ = Poor hand, diamonds suit longer than spade suit

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

• 3♣/3♦/3♥3♠ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

o Continuation bidding by opener

 Pass over 3♠ = To play, singleton spade

 4♣/4♦ over 3♣/3♦ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 4♥ over 3♥ = To play

 4♠ over 3♥ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 5♣/5♦ = To play

• 3NT = Suit length and HCP concentrated in the minors, 14-15 HCP

o Continuation bidding by opener

 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

 

The 5+♣ and 5+♦ hand pattern has been opened

 

• Pass = Diamond bust, hand completely useless outside of a diamond contract

• 2♥ = Lower ranking major when majors are equal in length, or longer major when majors are unequal in length

o Continuation bidding by opener

 3♣ = Big 55 hand pattern in the minors

• Continuation bidding by responder

o Pass = Poor hand, suit preference

o 3♦ = Poor hand, suit preference

o 3NT = To play, major suits well stopped

o 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

o 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

• 2♠ = Longer major

o Continuation bidding by opener

 3♣ = Big 55 hand pattern in the minors

• Continuation bidding by responder

o Pass = Poor hand, suit preference

o 3♦ = Poor hand, suit preference

o 3NT = To play, major suits well stopped

o 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

o 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

• 2NT = Suit length and HCP concentrated in the minors, 10-13 HCP

o Continuation bidding by opener

 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

• 3♣/3♦/3♥3♠ = Own 7-card suit on the assumption that a natural weak 2♦ was opened (which will be the case 70+% of the time)

o Continuation bidding by opener

 Pass over 3♥/3♠ = To play, no fit

 4♣/4♦ over 3♣/3♦ = Slam try but with modified responses as follows –

• 1 step = 0 keycards

• 2 steps = 1 keycard

• 3 steps = 1 keycard plus the trump queen

• 4 steps = 2 keycards

 5♣/5♦ = To play

• 3NT = Suit length and HCP concentrated in the minors, 14-15 HCP

o Continuation bidding by opener

 4♣/4♦ = Slam try in the suit bid, responses are 6-card RKCB

 5♣/5♦ = To play, holding in the major suits considered too weak to make a slam try

 

THE LEE TWO DIAMONDS MANUSCRIPT (187 pages long) COVERS THE FOLLOWING:

TABLE OF CONTENTS

 

INTRODUCTION

 

Chapter 1 Introduction

Chapter 2 The Reengineered Multi Two Diamonds

 

SECTION ONE – THE BASIC CONVENTION

 

Chapter 3 Opener has a natural Weak-Two in Diamonds

Chapter 4 Opener has six hearts and four spades, 10-15 HCP

Chapter 5 Opener has four hearts and six spades, 10-15 HCP

Chapter 6 Opener has a big 4441 hand, 16+ HCP

Chapter 7 Opener has a big 55 hand in the minors, 14+ HCP

 

SECTION TWO – SUGGESTED DEFENCE

 

Chapter 8 Defensive bidding

Chapter 9 Using the Lee Two Diamonds convention as your defence over the opponents 1NT

 

SECTION THREE – SUNDRY

 

Chapter 10 Why also a 7-card diamond suit in the opening bid?

Chapter 11 Bridge laws on “Brown Sticker Conventions”

Chapter 12 Summary

Chapter 13 The Lee Two Diamonds at the table

 

References:

[manudude03]

Oh no....

[MrAce]

[sfi]

THE LEE TWO DIAMONDS MANUSCRIPT (187 pages long)

 

LOL!

 

This reminds me of the Multi-defence notes of a top american pair. I was told that page 29 included the chapter heading "Doubles in fourth, sixth and eighth positions."

 

In comparison, my notes with the person I play most with in major events stretch to a very wordy 16 lines. And our Wilkosz 2D opening gets a full page and a half.

[nullve]

Without the 10-15, 6M4OM option your 2♦ opening would obviously no longer be a BS. So why don't you open 1M with that? (Sorry if you've already explained.)

[Zelandakh]

Without the 10-15, 6M4OM option your 2♦ opening would obviously no longer be a BS. So why don't you open 1M with that? (Sorry if you've already explained.)

It was, at great length. As I recall the OP does not accept that his convention is any different from any other form of Multi and therefore treats it as such for system regulations, including explanations to the opps. :o :unsure: :ph34r: