Saturday, January 28, 2012

1H/1S opening responses with interference


1.1.       Responses to 1H/1S with interference


Should there be interference three new bids become available, double or redouble and possibly a cue bid.

First we consider what happens after a takeout double:

Pass: no other action.

Redouble: 10+ HCP and denies a 3+ card fit with opener. Opener is invited to double opponents for penalty.

1♠(over 1): 6+ HCP, NF

1N: 8-10 HCP balanced

2♣(after a 3rd or 4th seat opening): Reverse Drury 7-10(11) HCP 3+ card support

2 /2: 7-9 HCP 5+ card suit, denies a 3+ card fit for opener, non-forcing

2: 7-9 HCP 5+ card suit, denies a 3+ card fit for opener, non-forcing

2/2: 5-10 HCP, 3-4 card support

2♠ (over 1 except after a 3rd or 4th seat opening): 5+ Spades, 4+ Hearts 10-12 pts, fit showing jump

2♠ (over 1 after a 3rd or 4th seat opening): Splinter raise with 4 trump and 11+ pts

2N (except after a 3rd or 4th seat opening): Limit+ raise, 3+ trump 10+ pts

2N (after a 3rd or 4th seat opening): Splinter raise with 0-1 with 4 trump and (11)12+ pts.

3♣/3(except after a 3rd or 4th seat opening): 5+ Minor, 4+ Major 10-12 pts., fit showing jump.
3(after a 3rd or 4th seat opening): 7-9 HCP and 6+ clubs

3(after a 3rd or 4th seat opening): Splinter raise with 4 trump and (11)12+ pts.



 
3 (over 1♠ except after a 3rd or 4th seat opening): 5+ Hearts, 4+ Spades 10-12 pts., fit showing jump.

3(over 1♠ after a 3rd or 4th seat opening): Splinter raise with 4 trump and (11)12+ pts.

3/3: Pre-emptive raise 5-7 pts. and 4 trump

3♠ (over 1 not in 3rd seat): Splinter raise with 4 trump and 10-12 HCP

3N: to play, balanced hand with unbid suits stopped. 13-15 HCP

4 /4(not in 3rd seat): Splinter raise with 4 trump and 10-12 HCP

4 (over 1♠ not in 3rd seat): Splinter raise with 4 trump and 10-12 HCP

4/4: Pre-emptive raise 5-7 pts. and 5 trump or to make with no slam ambitions likely at most 11 HCP,

 

Next we consider a simple overcall:

We play negative free bids over obstructed auctions. However, if you could make the same bid you would have made without interference, you make that bid and it has the same meaning (including weather it is forcing) as no interference had occurred. When you are forced to make your bid a level higher, this bid is not forcing and has at most 10 points and shows at least a 5 card suit. I want to emphasise this for Jump-shifts, in the case of an obstructed auction a jump shift is made on a good 5+ card suit and 10-12 HCP. 2N shows a balanced 10+ - 12 HCP with a stopper. A negative double is made with both unbid suits upto 4, guaranteeing 4 of unbid major. If the doubler bids again (after an overcall upto 3) in a suit that was obstructed by the overcall, that shows a GF hand with a good 5+ card suit and does not require any card in a unbid major.

One sequence is special, after a 3rd or 4th seat opening 1-1♠ or 1M-X,then 2♣ is Reverse Drury, 3 7-9 HCP and 6+ clubs shows 6 Clubs and 8-10(11) HCP and jump-shifts except 3♣ are min-splinters, 2N is a mini-splinter with 0-1♣.

Over a jump overcall, all auctions are obstructed, so if you have a GF hand you must start with a double (in addition to normal negative double hands), a cue bid or a leap to game. New suits are non-forcing with a good 8 to a bad 12 HCP. 2N has a natural meaning of 10+ - 12 HCP balanced or semi-balanced with a stopper

 

Over a natural 1N overcall we keep things simple.

Pass: 0-6 pts.

Double: 9+ HCP

New suit at 2 level: 6-8 HCP 6 card suit

Simple Raise:  6-10 pts. 3+ support

2N: Limit+ raise 3+ support

Jump Raise: Pre-emptive 5-7 points and 4 card support

New Suit at 3 level:

 

Over a Michaels:

New suit is competitive(if a minor)

2N: Natural balanced with stoppers in other major and minors.

Cue bid of other major is a limit+ raise

Raise is competitive.

Double is the ability to penalize the major or both minors.

 

Over a 2N for the minors, Use a variation on unusual vs. unusual:

Double shows the ability to penalize at least one minor.

Pass followed by double is penalty in both minors.

3 Major is a competitive raise (8-10 pts.).

3 of other major natural and competitive.

Club cuebid shows Hearts (Limit + over 1, GF over 1♠)

Diamond cuebid shows Spades (Limit + over 1♠, GF over 1)

 

Support Doubles (showing 3 card support) apply over these sequences:

1-Pass-1♠ -2§ and 1-Pass-1♠ -2

Support Redoubles (showing 3 card support) apply over this sequences.

1-Pass-1♠-Double

Over 1♠-Pass-2-Double-Redouble suggests penalty.

 

Squeeze bids and Maximal doubles apply up to 3for Spades and 3for Hearts as described in the 1section.

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