[andrei]

would Precision players give me some good ideas?

their preferred structure maybe?

ty all.

[helene_t]

I play Precision in many non-so-regular partnerships so I haven't made sophisticated agreements with anyone, but I have read and thought a lot about it, and we have has some discussions here before.

Original Wei was 1NT="any" GF, and freebids nonforcing. But I don't think that has ever been popular. Most (at least most vanilla Precision pairs) play dbl as appr. 5-7 points "any" shape, but it seems unsound to me. Whether we have a GF hand or a a semipositive hand, it is desirable to be able to show something about our shape immediately in case opps mess up our bidding further.

[bhtf]

friendly to all

not perfect (lol), but (1C = 15+ HCP, no limit) :

1C-(X) => Pass 0-5HCP, XX FG, others NAT 6-9HCP (with eventual variations)

and others, Transfert style :

1C-(1D) => Pass eventual punitive, X = H 4+, 1H = S 4+, 1S = C 4+ or no guard NT, 1NT = 6-8HCP D guard (sys on),
2C = FG D 5+ (anti psy), 2D = FG H 5+, 2H = FG S 5+, 2S = FG C 5°+, 2NT = NAT FG (sys on),
3C = FG D 6+, 3D = FG H 6+, 3H = S 6+, 3S = FG C 6+

1C-(1H) => Pass eventual punitive, X = S 4+, 1S = C 4+ or no guard NT, 1NT = 6-8HCP H guard (sys on),
2C = D 4+, 2D = FG H 5+ (anti psy), 2H = FG S 5+, 2S = FG C 5+, 2NT = NAT FG (sys on), 3C = FG D 5+,
2D = FG H 6+, 3H = FG S 6+, 3S = FG C 6+

1C-(1S) => Pass eventual punitive, X = H 4+, 1NT = 6-8HCP H guard (sys on), 2C = D 4+, 2D = FG H 5+,
2H = FG S 5+ (anti psy), 2S = C 4+ (big flaw ?), 2NT = NAT FG (sys on), 3C = FG D 5+, 3D = FG H 6+,
3H = FG S 6+, 3S = FG C 5+

1C-(1NT) => X = punitive, 2C = H 4+ (S 5+ eventual) , 2D = S 4+, 2H = S 4+ & H 5+ ,
2S = one limited minor 6+ or strong C/major, 2NT = strong D/other, 3C = limited C/D, 3D = strong H/S
[my "own standard" on oponents 1NT opening]

1C-(2C) => Pass eventual punitive, X = D 4+ (NOT A MAJOR !), 2D = H 4+, 2H = S 4+, 2S = C 4+ or no guard NT,
2NT = NAT 8-9 HCP (sys on), 3C = FG D 5+, 3D = FG H 5+, 3H = FG S 5+, 3S = FG C 5+ (anti psy),
3NT "for play" [but 4C, 4D, can verify]

1C-(2D) => Pass eventual punitive, X = H 4+, 2H = S 4+, 2S = C 4+ or no guard NT, 2NT = NAT 8-9 HCP (sys on),
3C = FG D 5+ (anti psy), 3D = FG H 5+, 3H = FG S 5+, 3S = FG C 5+, 3NT "for play" [but 4C, 4D, can verify]

1C-(2H) => Pass eventual punitive, X = S 4+, 2S = C 4+ or no guard NT, 2NT = NAT 8-9 HCP (sys on),
3C = D 4+, 3D = FG H 5+ (anti psy), 3H = FG S 5+, 3S = FG C 5+, 3NT "for play" [but 4C, 4D, can verify]

1C-(2S) => Pass eventual punitive, X = H 4+, 2NT = NAT 8-9 HCP (sys on), 3C = D 4+, 3D = FG H 5+,
3H = FG S 5+ (anty psy), 3S = C 4+, 3NT "for play" [but 4C, 4D, can verify]

1C-(others) => Pass is forcing ! and X too. Others NAT FG

[mtvesuvius]

I like to use Systems ON after 1♣ - (1♦) and 1♣ - (1♥).

I've found that bidding with 6+ HCP and 5+ Card Suits and doubling with (5)6-8 and a (Semi-)Balanced hand has worked really nicely for me.
Pass would be 0-5 or a Trap, and opener is forced to reopen.

[Apollo81]

I prefer to play positive doubles and negative free bids at low levels. I believe that this is a minority opinion.

In this scheme, double is game forcing and can show almost any shape, and a nonjump free bid shows 5+ cards, constructive values (about 5-7 hcp opposite a 16+ 1♣), and isn't forcing. This scheme is "on" through 2♥; if opener's LHO bids 2♠ or higher, double is negative/takeout and free suit bids are game forcing.

I'll add that having some way for responder to transfer to a major is a good idea in competition. I have seen a few hands where responder has a weak hand with 7+ in a major, and game only makes if the strong club opener is declarer.

[P_Marlowe]

Hi,

just a remark from someone, who intervenes a lot against strong 1C
openers, and does not get punished a lot:

You should have meta agreements, what to do

if they intervene with a 1-suiter (including with a 2-suiter with 1 one
know suit).

if they intervene with a specific 2-suiter (should include a discussion,
if bidding their suit is natural / artificial, in case the suit could be
2345).

if they intervene with a unspecified 2-suiter (for simplicity reasons
it should not really matter, if the suit they may have bid is included
or not in the possible 2-suiter.

What wont help you are lots of agreements, what to do over an 1D
overcall, over a 1H overcall, over a 1S overcall and so on.

Additionally, you should have a clear understanding until which level a
1C opener creates a forcing pass seq., i.e. if we opened 1C and they
intervene, up to which level opener is forced to reopen with shortage
in their suit.
....................................................................................................

All in all, the following should work reasonable well

# X is neg. against a 1-suiter, including bal. hands, at least
semi. pos. values
the inclusion of bal. hands, is not necessary, depends how
you want to play the next

# unusual vs. unusual against known 2-suiter, if one suite could
be 2345, it makes sense to treat the intervention as 1-suiter

# transfer responses, promising at least semi pos. values,
this avoids the decision, if it is better to play neg. free bids
or not

# X against a bid, which showes an unspecified 2-suiter,
promises a bal. hand with semi. pos. values (similar to
the DIXON double against a multi 2D opening)

# opener has to reopen the bidding upto 2S

With kind regards
Marlowe

[dake50]

1st meta-agreement on forcing pass: below 2S ON; above 3S ON; best guess at 3-level.

2nd meta-agreement on penalty bonanza tries -since opponents often "blow smoke" in what should be competing: take penalty unless their bids helped us evaluate borderline game with all honors working. Typical game try looks first to penalize. Thus bidding on has some slam suggesting value.

3rd meta-agreement is don't lose transfer to tenace hand nor "here's my stuff" inputs. Their bids won't switch off our low exploring game/slam methods.

I like xfer positives (some allowance for not being shut out: S-AQxxx is not neg). Pass fits/tolerates spades. Double warns no 3+Spades. Pass/X ambiguous by strength but bounded by not another bid.

Biggest thing is accepting not perfect, but reasonable results.

[zasanya]

http://www.clairebri...setsystemes.htm

Scroll down and you will see Sontag Weishel Power precision notes.They give effective methods to deal with all sorts of interference on precision ♣.