BBO Discussion Forums: 2 level responses to an unbalanced 1D - BBO Discussion Forums

Jump to content

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

2 level responses to an unbalanced 1D Building on Mgoetze's work

#1 User is offline   Cthulhu D 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,169
  • Joined: 2011-November-21
  • Gender:Not Telling
  • Location:Australia
  • Interests:Overbidding

Posted 2014-November-11, 20:01

I play an unbalanced 1D opening (11-21) in the context of a 1C: Clubs or balanced, 5 card majors, 14-16 NT system. I'm thinking about my responses to 1D. We used to play SJS, but that doesn't make a great deal of sense. I've read Mgoetze's thread on the topic and I was thinking of the following structure makes much sense

1D - ??:

1H: 4+ Natural, Transfer Responses
1S: 4+ Natural, Transfer Responses

1NT: Hands that cannot make a sensible other response (tends to have some club length, relatively weak)

Then the responses I'm not sure about. I really liked Mgoetze's 2C response, but I'm not sure how to make continuations work

2C: Clubs GF, Bal GF or 7-10 (maybe this needs to be 7-9) diamonds.
2D: Weak with a major
2H: Reverse Flannery by Responder - is this really required with Xfer responses?
2S: Initvitational+ raise of diamonds
2NT: Balanced invite to 3NT with short diamonds and no 4 card major
3C: Invitational with 6 clubs
3D: Premeptive raise.

Thoughts?
0

#2 User is offline   foobar 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 469
  • Joined: 2003-June-20
  • Gender:Male

Posted 2014-November-11, 21:19

View PostCthulhu D, on 2014-November-11, 20:01, said:

I play an unbalanced 1D opening (11-21) in the context of a 1C: Clubs or balanced, 5 card majors, 14-16 NT system. I'm thinking about my responses to 1D. We used to play SJS, but that doesn't make a great deal of sense. I've read Mgoetze's thread on the topic and I was thinking of the following structure makes much sense

1D - ??:

1H: 4+ Natural, Transfer Responses
1S: 4+ Natural, Transfer Responses


How do the transfer responses work?

Here's what I came up with over a similar 1 opening (albeit weaker):

1M: Natural
1N: < 12; not suitable for any other bid

1D - 2C (12+; GF unless suit rebid):
=========================

2D: 5+ diamonds, single suited min or two-suited hands
2H: Three suited, short clubs, min
2S: Good raise with 4+ clubs; 2N asks for shortness
2N: GF, 6+ diamonds
3C: Min raise with 4+ clubs
3N: Three suited, short clubs, max

1D - 2D (12+; GF unless suit rebid):
========================

2H: Three suited, short diamonds, min (rarely (42)=2=5)
2S: Good raise with 4+ diamonds; 2N asks for shortness
2N: GF, 6+ clubs
3C: Min, 6+ clubs
3D: Min raise
3N: Three suited, short clubs, max

1D - 2H:Reverse flannery, < invite
1D - 2S:Reverse flannery, invite
1D - 2N: Invitational
0

#3 User is offline   foobar 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 469
  • Joined: 2003-June-20
  • Gender:Male

Posted 2014-November-11, 21:19

View PostCthulhu D, on 2014-November-11, 20:01, said:

I play an unbalanced 1D opening (11-21) in the context of a 1C: Clubs or balanced, 5 card majors, 14-16 NT system. I'm thinking about my responses to 1D. We used to play SJS, but that doesn't make a great deal of sense. I've read Mgoetze's thread on the topic and I was thinking of the following structure makes much sense

1D - ??:

1H: 4+ Natural, Transfer Responses
1S: 4+ Natural, Transfer Responses


How do the transfer responses work?

Here's what I came up with over a similar 1 opening (albeit weaker):

1M: Natural
1N: < 12; not suitable for any other bid

1D - 2C (12+; GF unless suit rebid):
=========================

2D: 5+ diamonds, single suited min or two-suited hands
2H: Three suited, short clubs, min
2S: Good raise with 4+ clubs; 2N asks for shortness
2N: GF, 6+ diamonds
3C: Min raise with 4+ clubs
3N: Three suited, short clubs, max

1D - 2D (12+; GF unless suit rebid):
========================

2H: Three suited, short diamonds, min (rarely (42)=2=5)
2S: Good raise with 4+ diamonds; 2N asks for shortness
2N: GF, 6+ clubs
3C: Min, 6+ clubs
3D: Min raise
3N: Three suited, short clubs, max

1D - 2H:Reverse flannery, < invite
1D - 2S:Reverse flannery, invite
1D - 2N: Invitational
0

#4 User is offline   Cthulhu D 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,169
  • Joined: 2011-November-21
  • Gender:Not Telling
  • Location:Australia
  • Interests:Overbidding

Posted 2014-November-12, 03:20

I'm basically playing the responses from Mgoetze's prior thread (http://www.bridgebas...830%3B-opening/), and from the previous thread about transfers after 1D-1M. I like echognome/phils 1NT Gazzili thing, but partner and I play transfers every where else so the conceptual memory load is lower so we're doing that.

Spoiler


as my 1D promises 4+ Diamonds (and 4 only if any 4441 or (13)=4=5) I don;'t really need the short diamonds rebids by opener!

What I'm stumped on is what to do over 1D-2C - 2D effectively becomes P/C, but I'm worried that the separation between the hands isn't large enough.
0

#5 User is offline   phoenix214 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 347
  • Joined: 2011-December-23
  • Gender:Male
  • Location:Riga
  • Interests:Bridge; Chess; Boardgames; Physics; Math; Problem solving; and anything that makes my brain thinking.

Posted 2014-November-12, 06:46

The way i play the unbalanced diamond at the moment goes as follows:
1M - Natural with 4 cards
1NT - INV+ with clubs or bal(Think 1M-2C but instead of GF, it is INV+)
2X - Natural and non-forcing
2NT - INV + with diamonds
3C - Nat, NF
3D - Weak raise
3M - splinter
0

#6 User is offline   gordontd 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 4,485
  • Joined: 2009-July-14
  • Gender:Male
  • Location:London

Posted 2014-November-12, 06:54

View Postphoenix214, on 2014-November-12, 06:46, said:

The way i play the unbalanced diamond at the moment goes as follows:
1M - Natural with 4 cards
1NT - INV+ with clubs or bal(Think 1M-2C but instead of GF, it is INV+)
2X - Natural and non-forcing
2NT - INV + with diamonds
3C - Nat, NF
3D - Weak raise
3M - splinter

So both 2C & 3C are nat NF? What's the difference between the two?
Gordon Rainsford
London UK
0

#7 User is offline   Kungsgeten 

  • PipPipPipPipPip
  • Group: Full Members
  • Posts: 942
  • Joined: 2012-April-15
  • Gender:Male
  • Location:Skövde, Sweden

Posted 2014-November-12, 09:58

So is your 2 bid like a puppet to 2 (unless opener is strong), which responder pass when holding the raise hand?

We use the following:

1NT = Clubs, weak or GF
2 = Diamond raise, weak or GF (3+ if weak, 4+ if GF)
2 = 3+ diamond raise, INV

This is in combination with 1 being natural or a GF relay.

We use weak jump shifts, but you could probably find better uses for it. Perhaps:

2 = Balanced GF (if not wanting to use 1 as artificial)
2 = GF with a 5-5 pattern (not including diamonds)

In your original structure you could skip Reverse Flannery and play 2 as 4+ support and INV+, instead of 2, to save some bidding space.
0

#8 User is offline   mgoetze 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 4,942
  • Joined: 2005-January-28
  • Gender:Male
  • Location:Cologne, Germany
  • Interests:Sleeping, Eating

Posted 2014-November-12, 15:03

Well, I am flattered. ;) Look forward to seeing what you come up with.
"One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision"
    -- Bertrand Russell
0

#9 User is offline   Cthulhu D 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,169
  • Joined: 2011-November-21
  • Gender:Not Telling
  • Location:Australia
  • Interests:Overbidding

Posted 2014-November-12, 21:55

View PostKungsgeten, on 2014-November-12, 09:58, said:

So is your 2 bid like a puppet to 2 (unless opener is strong), which responder pass when holding the raise hand?

In your original structure you could skip Reverse Flannery and play 2 as 4+ support and INV+, instead of 2, to save some bidding space.


Yeah, that's the plan. Sort of - A big question is how forcing is 1D-2C-2D - I think it can be one of the following 3:

1) Not Forcing
2) Semi Forcing (any 7-10 diamond raise that would reject an invite passes, anything else bids)
3) Forcing - absolutely forcing.

This effects your response structure considerably. Playing NF, my 'was bored in a meeting so sketched out response structure' was:

1D-2C (Big question - does this deny a 4 card major?)
Spoiler


A couple of holes there obviously.That's not great, but the rebids are cramped as well, and some of them are under or overloaded. That gives a response structure of:

Then 1D-2C-2D:
Spoiler


I'm not sure what to do with 3H+ - I think 3M needs to be quite a specific hand, and no idea what 3NT is? DNE?

I thought about Semi forcing as well. This makes all the responses easier because it's GF opposite the minimum, but sometimes it's not very clear what is going on in the rebids

Spoiler

0

#10 User is offline   steve2005 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 3,149
  • Joined: 2010-April-22
  • Gender:Male
  • Location:Hamilton, Canada
  • Interests:Bridge duh!

Posted 2014-November-13, 11:03

View PostCthulhu D, on 2014-November-11, 20:01, said:

I play an unbalanced 1D opening (11-21) in the context of a 1C: Clubs or balanced, 5 card majors, 14-16 NT system. I'm thinking about my responses to 1D. We used to play SJS, but that doesn't make a great deal of sense. I've read Mgoetze's thread on the topic and I was thinking of the following structure makes much sense

1D - ??:

1H: 4+ Natural, Transfer Responses
1S: 4+ Natural, Transfer Responses

1NT: Hands that cannot make a sensible other response (tends to have some club length, relatively weak)

Then the responses I'm not sure about. I really liked Mgoetze's 2C response, but I'm not sure how to make continuations work

2C: Clubs GF, Bal GF or 7-10 (maybe this needs to be 7-9) diamonds.

NOT A BIG FAN OF THIS. 7-9 WITH DIAMONDS CAN BID 1N OR BIG DIST 2D. PREFER 2C INV+ CAN STOP IN 3C/D AND USE 3C PREEMPTIVE


2D: Weak with a major

THIS WHILE NICE PUSHES THE DIAMOND RAISE TO 2S WHICH WILL MAKE DIAMOND RAISE MORE DIFFICULT TO EXPLORE


2H: Reverse Flannery by Responder - is this really required with Xfer responses?
2S: Initvitational+ raise of diamonds
2NT: Balanced invite to 3NT with short diamonds and no 4 card major
3C: Invitational with 6 clubs
3D: Premeptive raise.

Thoughts?

COMMENTS IN CAP ABOVE

ALSO LIKE 3/3/4 AS GOOD GF SPLINTER RAISE
Sarcasm is a state of mind
0

#11 User is offline   Cthulhu D 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,169
  • Joined: 2011-November-21
  • Gender:Not Telling
  • Location:Australia
  • Interests:Overbidding

Posted 2014-November-15, 09:55

I am not sure you need more apace after 1D-2S. It depends if you want to play someyhing different than 1M--2NT. That structure fits, but is less useable because you are not going to be balanced or have a 5 card major.

1D-2S:
Spoiler

While this is clearly sub optimal contextually, its got the advantage of being easy to remember.

That said I think Kungsteen is right - I should scrap reverse flannery and pull the balanced game forces out of 2C.

This greatly simplifies responders rebid:

So after the 1D opener:
Spoiler

0

#12 User is offline   Cthulhu D 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,169
  • Joined: 2011-November-21
  • Gender:Not Telling
  • Location:Australia
  • Interests:Overbidding

Posted 2014-December-15, 02:53

Eventually went with:

1D:

1M 4+
1N Various balanced or club hands
2C: GF with 5 clubs (may be balanced, may be 4 if and only if 3334 exactly with 16+ HCP), or a (6)7-9 ish diamond raise with 4.
2D: Weak 2 in a major
2H: Reverse Flannery
2S: Invitational+ in diamonds
2N: Balanced invite
3C: Invitational with 6 clubs
3D: Preemptive diamond raise
3M: Splinter
3N: 3334 exactly 13-15
4C: Splinter
4D: Minorwood
4M: Exclusion RKCB

Followups:

1D-2C

Spoiler

0

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users