Sunday, June 7, 2015

Yet another stab at direct 1NT Overcall System


1NT Direct Overcall
In direct seat 1N shows 15-18 hcp balanced with a stopper, 15 hcp hands are included to protect against light openers where you have no good bud.  A takeout double is made if a double is more suitable.
1N by a passed hand shows a 2-suiter in the lower unbid suits, possibly with the lowest suit being longer (at least 5-5 in length).
 
Responses:
For 1N overcalls you’re unlikely to want to play in opener’s suit so using transfers, a transfer to opponent’s suit is used artificially as Stayman. All 2-level suit bids are transfers, with a transfer to opener’s suit being Stayman and 2♠ being a transfer to ♣ (or to ♦ over 1♣ opening with 2♣ then being Stayman). Overcaller completes the transfer without 4M and a minimum, bidding 2N without a 4M and a maximum.  With a maximum and a 4-card major, overcaller jumps in the major, except over 1♣/1♦ opening. Over a 1♣/1♦ opening overcaller cuebids with a maximum and both 4-card majors.
2N is INV.
3♣ shows both minors over 1♣ and is NF. A jump cuebid is a 6+card suit and INV including minor suit cuebids, Major suit jump cuebids are minor suit Stayman.
Transferring to a  major and then rebidding 3M is INV with no help in opponent's suit so is wary of NT. Transferring to a major and bidding a lower suit is at least 5-5 and INV.
When advancer transfers to a minor, overcaller completes the transfer with a good holding and makes the bid in between. After (1♣)-1N-2♠ 2N shows very good ♦ stoppers and other bids are normal.
Gerber is 4♣, 4♦/4♥ are Texas transfers, with a Texas transfer to opener’s suit meaning opponents have misbid/misclicked.


 


2♣


2♦


2♥


2♠


2N


3♣


3♦


3♥


3♠


1♣-1N


Stayman








INV


INV ♣


INV ♦


INV ♥


INV ♠


1♦-1N


Stayman








INV


INV ♣


MSS


INV ♥


INV ♠


1♥-1N




Stayman






INV


INV ♣


INV ♦


MSS


INV ♠


1♠-1N






Stayman




INV


INV ♣


INV ♦


INV ♥


MSS

 
Opponents double 1N:
Pass - suggested place to play, overcaller may bid 5-card suit, pass or redouble with doubt, then responder can leave 1NXX in or bid 4-card suits up the line till at least a 4-3 fit found, possibly playing in opener’s suit.
Redouble - transfer to ♣ even after a 1♣ opening. If responder next bids 3♣ it is INV.
2♣/2♦/2♥ - transfer to above suit, even if it is opener’s suit. If responder’s next bid is a raise or 2N is INV
2♠ - natural and constructive, overcaller may compete to 3-level with a fit if pushed
2N - both minors, usually weak, but may investigate for game by bidding their short major
3 bids - natural and preemptive, with a jump cuebid having no meaning
3N - to play
Gerber is 4♣, 4♦/4♥ are Texas transfers
 
If 1N gets doubled in balancing seat then:
Overcaller’s partner redoubles for SOS
Pass to play, other bids natural and non-forcing, including cue-bids
 
Opponents bid again at 2-level:
Doubles are negative, doubling then cuebidding usually has some minor suit length
2 level suit bids are natural and to play, even a cuebid
Transfer Lebensohl is used for 2N, 3N and 3-level suit bids
3-level transfer cuebids are Stayman with a stopper (double without a stopper)
Gerber is 4♣, 4♦/4♥ are Texas transfers (with a Texas transfer to opener’s suit being minor suit Stayman usually with no slam interest)

Tuesday, June 24, 2014

Highlights of System with Strong 2C/2D in Standard American

The goal is to get non GF 4441 hands out of the 2C opening and to have a way to show strong GF hands with a 4-card major and 5+card minor.

2N - 8-12 hcp 5-5 or better in the minors, so a bid is needed to cover 20-21 balanced


2D - (19)20-21 hcp balanced, 19-24 hcp 4441. Blue Team style responses.

2C - 8+ tricks with a major, 9+ tricks with a minor or 22+ hcp

            2D - waiting, can stop short of game in 2N/3H/3S/4C/4D

                        2H Kokish relay used on heart hands or balanced hands with 24+ hcp while a

                        new suit F1 with 3S showing 4S while 3N shows 5S6+H

                        2S - shows spades with 2N a NF bust

                        2N - 22-23 hcp balanced

                        3C - shows club but may have a 4-card major if GF

                                    3D - may be negative, but gives opener chance to show 4-card major

                        3D - shows diamonds without a 4-card major

                                    3H - may be negative, does not promise a rebid

                        3H - GF with 4+H 5+D

                        3S - GF with 4+S 5+D

                        3N - To play with running minor

                        4C - 25+ hcp 4=4=1=4 or 4=4=0=5, GF
 
                        4D - 25+ hcp 4=4=4=1 or 4=4=5=0, GF

                        4H - 25+ hcp 1=4=4=4 or 0=4=4=5 or 0=4=5=4

                    4S - 25+ hcp 4=1=4=4 or 4=0=4=5 or 4=0=5=4

                        4N - 2 loser balanced
 

Sunday, June 8, 2014

Bergen Raises aren't all they are cracked up to be

Defense to Bergen
There is an obvious defense to Bergen, which allows opponents to enter the bidding, when they normally wouldn't have the values to.
3C (if 7-9 or 6-9): Double = takeout double of the major. Don't so much need hcp as distribution as they are unlikely to be able to play in 3CX. Might find any easy sacrifice or get to play it, especially if opener cant bid game.
3D (If limit): Double is for lead
If people are playing Reverse Bergen you do the other way round. 3C-X: lead, 3D-X: takeout
Alternative:
 
1M-3M : use this as a mixed raise (Bergen style) 7-9 4 card support
1M-2N: standard forcing raise plus 4-card limit raises. You have to change your responses to what your would do over 1M-X-2N (Dormer). Of course, you could use more complicated methods, there are many methods for 2N as a limit+ raise available on the internet or in books.
 
Pre-emptive raises: just pass, raise to 2M or 4M depending on your playing strength.
Using this method you don't give away easy doubles of artificial bids

Thanks to John Montgomery's Revision Precision for showing the error of my ways.




 

Tuesday, April 8, 2014

Precision with 1D as your Strong Forcing bid 17+ unbal/18+ bal

I've experimented with using 1D as the strong forcing bid in a Precision based system.
Here is link to STR 1D convention card
The idea is that 1C is better as your nebulous bid than 1D. Then putting 1D as your strong bid which is one step higher, the theory is you often get interference and on those hands it doesn't matter whether you opened 1C or 1D.

To get 1C as promising 2+ clubs you would have to open 2D with 5D4M, which I don't think is a good idea. The other option is to open 1M with 4M and 5 or 6D and 2D with a 6+D 1-suiter, which is better but I really like 5-card majors. So I have chosen to make 1C potentially 0C and make it F1 with 1D as a negative or some better hand hands that don't fit into the responding system. 2C is a standard Precision 2C but promises 6+. 2D is an intermediate bid which promises 6+D and denies a 4+ major. Also, 2H/2S are weak 2's. 2N shows both minors 8-12 hcp.

So your strong bid is 1D is artificial 0+D F1, 17+ hcp unbalanced or 18+ hcp balanced

and 1C is:
- 11-14 NV 12-14 Balanced 2+C
12-16 unbalanced 0+C
- 5C possibly with a 4+ card side
- 5+D  with a 4+ card side, only 5-card major if a maximum and 6+D
- poor 6+ C/D suit (that isn't good enough for a 2C/2D opening)
- 13-16 minor 2-suiter
- 7-card semi-solid minors with a side A/K

Also 1C-1D:
Is artificial, 0+D, F1 and one of -
·       0-6 hcp
·       11-12 hcp balanced with no 4M and no 5-card suit
·       16-18 hcp balanced with no 4M and no 5-card suit

Saturday, February 15, 2014

Sunday, February 9, 2014

Stolen bids are silly

There is no convention worse than stolen bids after interference over 1N opening.

You lose  the penalty double (or negative double if using that method), so you are give free pass for anyone to overcall with impunity as you can't double for penalty.

Sure you get the transfer effect with stolen bids but this is overrated and can always use Transfer Lebensohl which allows a transfer on some hands.

Learn Lebensohl it's  not that hard and way better

Saturday, October 12, 2013

Basic Lebensohl after 1N opening


After 1N-X you ignore double and play systems on. Can give special meaning for pass and redouble.

After 1N-2♣ you double for Stayman and otherwise ignore bid and play systems on.

After 1N-2♦

-double Penalty opener must pass and cooperate in penalizing if they run

-2♥ sign-off but opener can still "super accept" as if a transfer or compete with good trump

-2♠ sign-off same as over 2♥

-2N puppet, opener must bid 3♣ no matter what they have

      -3♣ forced

             -pass to sign-off in Clubs

             -3♦ Stayman with a ♦ stopper, (cue-bids are Stayman, going slow by bidding 2N means you have a stopper

             -3♥ natural INV

             -3♠ natural INV

            -3N to play with a ♦ stopper (went slow with 2N so have a stopper)

-3♣ natural forcing

-3♦ Stayman without a stopper

-3♥ natural forcing

-3♠ natural forcing

-3N game values but lack ♦ stopper (went fast no 2N) if opener has no ♦ stopper you scramble, may end up in 4♣ or 4-3 major fit

 

works basically the same over 2♥/2♠

 

After 1N-2♥

-double Penalty opener must pass and cooperate in penalizing if they run

-2♠ sign-off , opener may "super-accept"  or compete

-2N puppet, opener must bid 3♣ no matter what they have

      -3♣ forced

             -pass to sign-off in Clubs

             -3♦ sign-off

             -3♥ Stayman with a ♥ stopper, (cue-bids are Stayman, going slow by bidding 2N means you have a stopper

             -3♠ natural INV

            -3N to play with a ♥ stopper (went slow with 2N so have a stopper)

-3♣ natural forcing

-3♦ natural forcing

-3♥ Stayman without a stopper

-3♠ natural forcing

-3N game values but lack ♥ stopper (went fast no 2N) if opener has no ♥ stopper you scramble, may end up in 4♣/4♦ or 4-3 spade fit

 

After 1N-2♠

-double Penalty opener must pass and cooperate in penalizing if they run

-2N puppet, opener must bid 3♣ no matter what they have

      -3♣ forced

             -pass to sign-off in Clubs

             -3♦ sign-off

             -3♥ sign-off

             -3♠ Stayman with a ♠ stopper, (cue-bids are Stayman, going slow by bidding 2N means you have a stopper

            -3N to play with a ♠ stopper (went slow with 2N so have a stopper)

-3♣ natural forcing

-3♦ natural forcing

-3♥ natural forcing

-3♠ Stayman without a stopper

-3N game values but lack ♠ stopper (went fast no 2N) if opener has no ♠ stopper you scramble, may end up in 4♣/4♦ or 4/3 heart fit