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Convention HELP

Inverted minors

Source

  • Melih Özdil - Melih Özdil

 

 
The sequences: 1§ - 2§ and 1¨ - 2¨promise 9+ HCP with good five cards or 11+ HCP with Hxxx

The sequences: 1§ - 3§ and 1¨ - 3¨can be 4-7 HCP with five card support and unbalanced hand.

After this raises, if opener rebids 3NT with 18-19 HCP, responder might return to main suit to play there if very weak.

 

Opener's rebids after an inverted minor raise are conventional and follow this scheme:

 

1¨   -             2¨

 ?

- 2NT              : non-forcing, exactly three diamonds, 12-13 HCP balanced

- 3¨               : minimum hand with at least four diamonds  
- 3NT              : 18-19 HCP with exactly three diamonds

- 3©                : autosplinters

- 3ª                : autosplinters

- 4X                : exclusion RKCB

- 4¨               : RKCB

 

The first 3 steps which can be used, Based on Eric Kokish’s system

 

2©                  : 1.step, balanced 14 HCP or good hand with ten cards in both minors (5-5), (6-4) or   

               singleton club with 15+ HCP.

2ª                  : 2.step, game try with an unbalanced hand.

3§                  : 3.step, six diamond and any five cards suit.

 

1¨   -             2¨
2
©   -              ?

 

                      - 2ª                : forced whenever responder holds a HCP limit raise

                      - 2NT              : natural, scattered strength, roughly 13-14 HCP or 18+ HCP

                      - 3NT              : 15-17 HCP, stoppers

                      - 3§                : 13+ HCP, no splinter, prefer NOT to declare notrump just yet

                      - 3¨               : 13+ HCP, splinter in the other minor (3-3-6-1)

                      - 3M               : 13+ HCP, splinter in bid suit

                      - 4X                : 13+ HCP, extreme shortness

                      - 4¨               :  RKCB

 

1¨   -             2¨
2
ª   -              ?

 

                      - 2NT              : relay

                      - 3§                : splinter club, not a minimum

                      - 3¨               : minimum

                      - 3M               : splinter major, not a minimum

 

1¨   -             2¨
3
§    -              ?

 

                      - 3¨               : relay

                      - 3NT              : good stoppers in both majors

 

 

 

 

 

 

 

DEVELOPMENTS

 

1¨   -             2¨
2NT -              ?

 

                      - Pass            : to play

                      - 3¨               : to play

                      - 3NT              : to play

                      - 3X                : splinter

 

1¨   -             2¨
3
¨   -              ?

 

                      - non-forcing; If responder continues, he shows stoppers at three level bids,       

               shows shortness at four level.

 

1¨   -             2¨
2
©   -             2ª

 ?

 

- 2NT              : 14 HCP balanced

- 3§                : no splinter, flaw for NT, might be (4-2-5-2), then 3X=stopper, 4X=SPL

- 3¨               : splinter in other minor

- 3M               : splinter, ten cards in both minors.

- 3NT              : natural, 18-20 HCP not slam-oriented, (3=3=4=3)

 

 

1¨   -             2¨
2
©   -             2NT

 ?

 

- 3X                : splinter

 

 

1¨   -             2¨
2
©   -             3§                  game-forcing, no desire to bid NT yet

  ?

 

- 3¨               : waiting bid; 3M shows stopper, 3NT shows stopper in both majors

- 3NT              : 14 HCP

- 3M               : splinter, ten cards in both minors.

 

1¨   -             2¨
2
ª   -             2NT                relay

 ?

 

- 3X                : splinter

- 3NT              : seven cards suit and one stopper.

 

1¨   -             2¨
3
§    -             3¨                 relay

 ?

 

- 3M               : five card suit

- 4§                : six diamonds, five clubs and not very minimum

 

 

 

 

1¨   -             2¨
3
§    -             3NT                good stoppers in both majors

 ?

 

- Pass            : six diamonds and five clubs

- 4§                : six diamonds, five clubs and good hand

- 4¨               : transfer to heart (6-5)

- 4©                : transfer to spade (6-5)

 

 

GENERAL APPROACH

 

Rule  1            : If opener didn’t bid NT because of a lack of stoppers, responder shows stopper.

Rule  2            : If responder didn’t bid NT because of a lack of stoppers, return to main suit is relay; new suit        

              shows shortness.

Rule  3            : If opener raise the main suit to three level, responders three level bids shows stoppers,

              four level bids without jumping shows shortness.

Rule  4            : If one of both sides makes a splinter bid, the below steps are applied

 

                        - 3NT                                                        : shows good stoppers

                        - 4NT                                                        : shows good stoppers and slam invitation; asking for min-max in      

                                              known limits

                        - Return to main suit            : shows 2-3 HCP losted value in known limits; it is not game-forcing

                                                     after game invitational sequences                               

                        - 1.Step                              : shows special values in the suit bid.(x,Ax,Kx,KQx,AK)

                        - 2.Step                              : transfer to singleton of partners suit. Shows a good hand with no                                   

                                                     extras or a hand to ask for RCKB after the transfer.

                        - Raising the singleton         : shows special values in the unbid suit!

                        - Jump in new suit               : exclusion RKCB

 

1¨   -             2¨
2
©   -             3©

 ?

 

- 3ª                : special values in spades, 1.step

- 3NT              : good heart stopper

- 4§                : transfer to heart, 2.step     

- 4¨               : minimum

- 4©                : special values in clubs

- 4ª                : exclusion RKCB

- 4NT              : 18-19 HCP with heart stopper

- 5§                : exclusion RKCB

 

1¨   -             2¨
2
©   -             3¨                 singleton clubs

 ?

 

- 3©                : special values in hearts

- 3ª                : transfer to club, good hand with no special values                                  

- 3NT              : club stopper

- 4§                : special values in spades

- 4¨               : minimum

- 4©                : exclusion RKCB

- 4ª                : exclusion RKCB

- 4NT              : 18-19 HCP with club stopper

 

 

 

 

Rule 5             : If opener made a direct splinter bid, responders return to main suit shows 9-10 useful

               points, with less he bids the game.

 

1¨   -             2¨
3
ª   -              ?

 

                      - 3NT              : to play

                      - 4§                : special values in clubs

                      - 4¨               : useful 9-10 HCP

                      - 4©                : transfer to spade!

                      - 4ª                : special values in hearts

                      - 4NT              : good spade stoppers, 15-16 HCP

                      - 5§                : exclusion RKCB

                      - 5¨               : minimum

                      - 5©                : exclusion RKCB

 

Rule 6             : If one of each sides has shown any extras at three or four level:

                        - continued  bids under 4NT shows minimum

                        - 4NT is RCKB with good hand.

                        - raising the main suit to game shows minimum and (AK) in the suit that partner showed

                          extra In this case partners extra must be singleton!

 

1¨   -             2¨
2
©   -             3©

4©   -    ?

 

                      - 4ª                : minimum

                      - 4NT              : RCKB

                      - 5¨               : minimum and AK in the suit that partner showed extras

 

Rule 7             : If opener transfers to partners singleton:

- completing the transfer shows 13-14 useful HCP.

- with useful 15 HCP or more either bid 4 NT for RKCB or directly give your

  key card count, bidding at the 5th level

 

1¨   -             2¨
2
©   -             3ª

4©   -              ?

 

                      - 4ª                : minimum

                      - 4NT              : RKCB with good hand

                      - 5§                : shows (0-3) key cards with good hand

                      - 5¨               : shows (1-4) key cards with good hand

                      ………………………………………………………

 

Rule 8             : If responder completes the transfer with a minimum hand:

                        - returning to main suit at the 5th level shows no slam interest

                        - 4NT asking for keycards