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1c_interference_old

Interference After We Open 1C (Strong)

General

Bids or X at the one-level are F1
Jumps are weak
Others are GF
Swapped the Cues. MIN CUE = bid NT, jump to 3Cue = 5/5 highest
NB: over 1D we still play 2Cue = michaels, 3Cue is bid 3NT
MIN-Cue is “Bid 3NT”
(Approx 7/8-9/10, flat, sensible appproach. Mike might have 2 Aces, Will reckons he won't)

If available, a Jump Cue @ 3-level is 5/5, GF

1C - Direct Interference

1C (X, any meaning)

..Pass: typically less than 8, if 5-7 then no 5+ or good 4+ suit.
..XX: GF
..1suit: F1
……(New Suit by Opener is F1. 1NT or min Raise by Opener NF. Then, 1NT or min bid of old suit are NF)
..2C: Nat 5+, GF
..We discussed not responding 1NT here.
..1NT: NF 5-7 bal
……(New Suit by Opener is INV)

..Jumps: Weak (0-5)
……(A New Suit by Opener is F1)

1C (1D (Nat))

..Pass: Negative or trap
..X: 4+H, 4+ HCP
..1H: 4+S, 4+ HCP
..1S: Xfer to 1NT, 5+ HCP, No 4+M or biddable minor suit. (Maybe this should be specifically 5-8?)
..(1NT,2C,2H,2S by Opener are NF (but raise with fit/max), Jumps = GF, 2D is ART G/F, responder often bids cheaply).
..1NT: ??? G/F NT oriented, happy to declare???
..2D: G/F, no 4m or biddable minor?
..2H/2S/3C/3H/3S = Weak, 6/7c suit.
..3D: 5/5 MAJORS, could be shapely rather than strong.
..Jump-2NT: 5/5 Clubs & Hearts, Any range, not nec GF
..jump-suit: non F
..4m = Leaping Michaels

1C (1-ART)

..as above, except
..X: GF (Next X is T/O, usually not extreme shape)
..etc

1C (1NT - minors)

Special Case
New Suits Non GF, Unusual vs Unusual
Jump Cue = Bid NT
..X: GF
..2C: H, GF
..2D: S, GF
..2M: non F SPECIAL CASE
..2NT * * Both MAJORS 5/5, Any range (lowest M suit by opener is passable) * *
..3M: non F
..3m (Jump Cue) = Bid NT

1C (1NT - ART)

..X: GF
..Unusual Vs Unusual applies v two-known suits
..Otherwise, Min-Cue says Bid NT, Jump Cue 5/5
..Bids Nat, GF
..Jumps Weak

1C (2suit)

..X: T/O GF..(Usually not extremely shapely - void)
..2suit Nat GF
..2NT NATURAL GF
..Cue: BID NT
## add: 4m = Leaping Michaels

1C (2NT - ART)

1C (pre-empts 3C up to 4H)

..X: GF values
..Bids: Nat, GF
..3NT: NAT
..Cue: Michaels, any 2 suits
..4NT: Lowest Unbid
## add: 4m = Leaping Michaels
No NON-Leaping Michaels

1C (4S+)

..X: Values
..4NT: 2 suits (or Weak Hearts, 5H direct stronger)
..Bids: NAT GF

1C - Direct Interference - Continuations

1C (overcall) P (P)
X
shows shortage in their overcall, doesn't show extras

1C (any) P (any)
X
shows pure takeout, or extras.

Responder’s 2NT response to a takeout double is always scrambling.

1C (P) Respond (Interference)

After GF & Real Suit shown, Doubles are PEN.

1C* (P) 1D* (any)
..First X by either player is T/O, relatively pure, not extreme shape
..Actual GF to win the Auction or X
..Bids (inc NT) are directional.
..Pass (forcing) then Bids are no direction
..Pass (forcing) then Pass (PEN)

1C* (P) 1H 5-7 flattish (any)
..Lowest suit bid by Opener is Non F
..X is Flexible, GF

1C* (P) 1S* 0-4 (any)
..Lowest suit bid by Opener is Non F
..X is Flexible, GF
Check this, Doubles GF?

1C* (P) 1NT+ (any)
After any 1NT or higher response.
Double by Opener is PEN
Bids in shown suits are nonF
Jumps are GF

Double by Responder is extra shape
Bids are extra shape

1C Further Interference

If we have shown some shape, BY BIDDING A SUIT (NOT X), and GF, then X by either player is PEN
Otherwise T/O / values

Eg 1 US (THEM) US (THEM)
….. 1C (2H) X (any)
*
X was GF, and shape
No suit shown, This auction, X is T/O

Eg 2 US (THEM) US (THEM)
…… 1C 1H 2D any
*
2D was GF, Natural
Next X PEN by either player

Eg 3 US (THEM) US (THEM)
…… 1C P 1D* 2H
…… 2S any *
1D GF, 2S shape
Next X PEN by either player

Eg 4 US (THEM) US (THEM)
…… 1C 1N minors 2D* GF S any
*
Next X PEN by either player

If we are in a GF, but no-one has bid a suit:
Eg 5 US (THEM) US (THEM)
…… 1C P 1D 3H
No-one has shown Shape.
X is T/O (pure)
3NT is confident.
3S is Confident.
Pass then 3S is flexible
Pass then Pass is Pen
Pass then 3NT is some doubt
4H Cue is S+minor
4NT is minors

#DISCUSS
Other auctions:
Eg 6 US THEM US THEM
…… 1C 1D Nat 1H F1 2D
…… ??
Pass, 2H: NON F
X: T/O not GF
2H: non F
2S: F1
2NT: Natural,
3C:
3H: Forcing
3S:
4C:
3D:

Eg 7 US (THEM) US THEM
…… 1C* str (1D Nat) X F1 (P)
…… ??
1NT NF
lowest bid NF
2NT, Jump, Cue GF

##Check Good Bad usage
Eg 8 US (THEM) US THEM
…… 1C* str (1S Nat) X F1 (2S)
…… ??
Good Bad
2NT - Scramble
3bids GF
X: T/O (next bid NF) or some GF

1c_interference_old.txt · Last modified: by 1.157.164.135

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