Percentages of Opening Bids in Different Systems

[steve2005]

Percentages of Opening Bids in Different Systems

I seem to remember seeing this somewhere but can't remember.

It was a comparison of the percentage you opened the bidding with each bid in different systems.

Anyone seen this?

[sfi]

Percentages of Opening Bids in Different Systems

I seem to remember seeing this somewhere but can't remember.

It was a comparison of the percentage you opened the bidding with each bid in different systems.

Anyone seen this?

Is this the analysis you are thinking of?

 

http://www.clairebridge.com/textes/bridge_system_collection.pdf

[pilowsky]

Is this the analysis you are thinking of?

 

http://www.clairebri..._collection.pdf

Interesting, he says that in Australian standard (whatever that is) 1C = 3+ and 1D = 4+ which leaves us in a pickle with 4432.

[Cyberyeti]

Interesting, he says that in Australian standard (whatever that is) 1C = 3+ and 1D = 4+ which leaves us in a pickle with 4432.

 

1♥ is 4+ only the spade is 5 so 1♥ with 4432

 

The version of Acol is the one I was taught by my grandfather in the early 70s, but one I haven't seen since

[pilowsky]

Missed that - I stopped too soon.Acol isn't part of "Standard Australian" - almost everyone uses 5CM.

Maybe this explains why so many Australians play "short club" - opening 1♣ with 4432.

[Cyberyeti]

Acol isn't part of "Standard Australian" - almost everyone uses 5CM.

Maybe this explains why so many Australians play "short club" - opening 1♣ with 4432.

 

I never said it was, hence why the two bits were separate paragraphs, his write up of standard Australian says 4 card heart (maybe that's as out of date as the version of Acol he gives)

[michel444]

Is this the analysis you are thinking of?

 

http://www.clairebridge.com/textes/bridge_system_collection.pdf

tHANK YOU !

VERY INTERSTING AN lONG DOCUMENT

I understand the question in a diferent maner .

 

in "normal" system you pass 55% of the time you are dealer it can be more or less

the average for 1minor is greater the 1 major who is greater then a 15-17 NT

2c is so rare that when it hapen I asking myself if it is real

yesterday at acol club partner open 2c i anser 2d with 5♥ to the King (K xxx x) and 2 Black Quenn

partner rebid 2♥ with 4♥ balanced hand and 25 point

i bid 3♥ and he close at 4♥

I think he ask how many time i open 1 club 1 diamond 1♥ 1♠ 1 NT ... in a system

[michel444]

found 1 for Moscito

 

Pass 40.98%

1♣15.60% Strong, artificial, and forcing

1♦11.79%4+ Hearts, could have longer minor~ 9 - 14 HCP

1♥10.71%4+ Spades, could have longer minor~ 9 - 14 HCP

1♠3.89%4+ Diamonds, unbalanced hand, could have longer clubs~ 9 - 14 HCP

1N 6.81% 12 - 14 HCP balanced

 

 

other opening have under 3%

 

2♣1.48%6+ Clubs, ~ 9 - 14 HCP

2♦ 2.55% Mini-Multi, 6+ Hearts or 6+ Spades

2♥ 2.52% 5+ Hearts, undisciplined~ 5 - 10 HCP

2♠ 2.55% 5+ Spades, undisciplined~ 5 - 10 HCP

2N0.64%Bad three level preempt in either minor

3♣ 0.43% Natural and constructive preempt

Promises two of the top three honors

3♦0.43%

Natural and constructive preempt

Promises two of the top three honors

3♥0.79%

Natural

3♠0.77%Natural

3N0.11%

Four level preempt in either minor

[pescetom]

Maybe this explains why so many Australians play "short club" - opening 1♣ with 4432.

I suspect that is simply common sense in action, the presumed advantages of opening 1♦ instead are far from clear.

[thepossum]

Is this the analysis you are thinking of?

 

http://www.clairebridge.com/textes/bridge_system_collection.pdf

 

Thx for the article

 

Am on the hunt for the world's best system - that means simplest and most effective

[michel444]

Thx for the article

 

Am on the hunt for the world's best system - that means simplest and most effective

I think EHHA

[steve2005]

found 1 for Moscito

 

Pass 40.98%

1♣15.60% Strong, artificial, and forcing

1♦11.79%4+ Hearts, could have longer minor~ 9 - 14 HCP

1♥10.71%4+ Spades, could have longer minor~ 9 - 14 HCP

1♠3.89%4+ Diamonds, unbalanced hand, could have longer clubs~ 9 - 14 HCP

1N 6.81% 12 - 14 HCP balanced

 

 

other opening have under 3%

 

2♣1.48%6+ Clubs, ~ 9 - 14 HCP

2♦ 2.55% Mini-Multi, 6+ Hearts or 6+ Spades

2♥ 2.52% 5+ Hearts, undisciplined~ 5 - 10 HCP

2♠ 2.55% 5+ Spades, undisciplined~ 5 - 10 HCP

2N0.64%Bad three level preempt in either minor

3♣ 0.43% Natural and constructive preempt

Promises two of the top three honors

3♦0.43%

Natural and constructive preempt

Promises two of the top three honors

3♥0.79%

Natural

3♠0.77%Natural

3N0.11%

Four level preempt in either minor

 

This is what i was actually looking for.

looking for 2/1GF System and Precision to start

[michel444]

the percentage of opening a bid is directly to the point range of the opening HCP

in NORMAL system you pass 70% of the time

no idea how it will show but i will copy 1 table per answer

 

 

opening bid point ranges:

0-12

13-20

21+

 

73.21

25.99

0.80

[michel444]

opening bid point ranges:

0-10

11-15

16+

 

 

56.24

34.00

9.76

[michel444]

opening bid point ranges:

0-9

10-14

15+

 

 

46.83

38.98

14.19

 

 

now you need to adjustthe other factor of the opening

in a forcing pass system not alowed by ACBL regulation when pass is 15+ HCP you pass only 14% of time 86% you open with a very weak opening or limited opening 38%

[michel444]

opening bid point ranges:

0-7

8-12

13+

 

 

28.58

44.63

27.79

 

 

if the Forcing pass is 13+ you pass 27 % of time

make a limited opening 45 % of time

and a weak opening 28% of time some at level 1 other at level 2 and 3 and this is just the opopsit of sound biding !!!

 

Michel

[blackshoe]

I think Daniel Neill covers frequency of opening bids in Standard Modern Precision.

[Gilithin]

In a vacuum, you want to Pass with 35-40% of hands, bid 1♦ or higher with 35-40% of hands and open 1♣ with the rest. Unfortunately those pesky opponents sometimes like to butt in and this changes the percentages somewhat.

[michel444]

In a vacuum, you want to Pass with 35-40% of hands, bid 1♦ or higher with 35-40% of hands and open 1♣ with the rest. Unfortunately those pesky opponents sometimes like to butt in and this changes the percentages somewhat.

I don't want to pass but I have to respect partner and bid what we agree.

I did my share of "sick" biding

RHO open 1 ♣ i have ♠x ♥xxxx ♦ A xxx xxx ♣ A

I bid 1 ♠ all pas make 1♠ -3

made 4 trick absolot top all the field played 4 ♠ ....

Michel

[Tramticket]

In a vacuum, you want to Pass with 35-40% of hands, bid 1♦ or higher with 35-40% of hands and open 1♣ with the rest.

 

Why? Is there some science behind this comment?

 

Much will depend upon your system philosophy. Opening lower gives more space for you to bid constructively. but lower openings also give more space for your opponents to interfere cheaply and relatively risk-free, at the one level. The higher the bid, the less bidding space you will have for your constructive bids. But higher bids are less likely to attract interference as overcalling at the two level and higher is more risky. There are trade-offs and the above percentages seem to be very simplistic.

 

Take a simple system, such as Acol:

- A weak no trump occurs more often than a strong no trump - a balanced 12-14 has a 9.7% frequency compared with 4.9% for a balanced 15-17.

- Major suit openings occur more often if you allow the suits to be four-cards or longer, when compared with five-card major systems. It isn't easy to quantify this because some Acol players will systematically open a minor with 4432 (outside the no trump range), whereas others (including me) will open the major.

 

But overall, Acol tends to be a system where the one-level bids are more pre-emptive - which has advantages and disadvantages.

[Gilithin]

Why? Is there some science behind this comment?

The science is called the Fibonacci sequence and this is the foundation of the vast majority of relay systems currently played. In a vacuum you are not worrying about their bidding and just defining your hand as efficiently as possible, hence the comment about pesky opponents.

[michel444]

I think Daniel Neill covers frequency of opening bids in Standard Modern Precision.

LOL no offense i see Standard with bridge an it make me laught ..

Moscito have no Standard / Forcing pass have no Standard

 

 

iiii

Lukasz slawinski

an integral part of bridge is competition in the development of biding system's

the opprtunity for inventing and testing of biding and convention is one of the main atraction of bridge.

there should be no restriction on biding system and conventions /

at tournaments and congresses

[Gilithin]

Forcing pass have no Standard

You really should not conflate bidding systems with system families. Moscito (original) is a system - it has a standard, as written by its creators. It has also given rise to a number of variants producing a family of systems. These do not have a standard. Similarly Forcing Pass is not a system but rather a family of systems. This is arguably the system family with the broadest range in all of bridge so the idea of a standard (beyond a Pass is 1st/2nd seat being forcing) is quite strange. The same applies to Precision. Wei Precision is a system, it has a standard and this is often what pairs mean when they agree Precision at a table. Precision as a whole is a family; it contains a number of systems with vastly different ways of approaching bidding and therefore no standard.

[mycroft]

And "Standard Modern Precision" is a title for one of those Precision systems (whether Dan Neill decided to call his book that, or whether the term was known for what was called something else before the book came out). It's standard "Modern Precision", not anything to do with "Standard".

[PrecisionL]

SMP:

10+ hcp = 53 %

11+ hcp = 44 %

12+ hcp = 35 %

13+ hcp = 27 %

16+ hcp = 9.8 %

17+ hcp = 6.5 %

18+ hcp = 4.1 %

Edited 2/11/23