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Convention HELP

Over overcalls

Source

  • Melih Özdil - Melih Özdil

 

 
                                                                                                            

 

OVER 2nd HAND OVERCALL

 

* NT Responses

 

                      1M                

1m                              ?

 

                                            - 1NT              : 07-10 HCP
                                            - 2NT              : 11-12 HCP

                                            - 3NT              : 13-15 HCP

 

                      2§                 

1¨                              ?

 

                                            - 2NT              : 11-12 HCP
                                            - 3NT              : 13-15 HCP

 

* New Suit Responses

 

After minor opening, over overcall, jump with the new suit is natural bid;

shows length and approx. 6 HCP

Normally, jump to two level with six card suit and jump to three level with seven card suit

 

                      1©                   

1§                               ?

 

                                            - 1ª                : 5+ HCP, at least five cards, forcing one round
                                            - 2
¨               : 11+ HCP, at least four cards, forcing one round

                                            - 2ª                : approx. 6 HCP, six cards, non-forcing

                                            - 3¨               : approx. 6 HCP, seven cards, non-forcing

                                            - 3ª                : approx. 6 HCP, seven cards, non-forcing

 

                      1ª                   

1¨                              ?

                                           

                                            - 2§                : 11+ HCP, at least four cards, forcing one round

                                            - 2©                : 11+ HCP, at least five cards suit, forcing one round

                                            - 3§                : approx. 6 HCP, seven cards, non-forcing

                                            - 3©                : approx. 6 HCP, seven cards, non-forcing

 

* Minor Supports

 

                      1ª                   

1§                               ?

 

                                            - 2§                : (6-10) HCP, at least four card support
                                            - 3
§                : preemptive, with five card support

                                            - 2ª                : limit raise or more, at least four card support

                                            - 3ª                : 11+ HCP, singleton spade with good support

                                            - 4§                : preemptive, with very long support and few points

 

 

 

 

* Major Supports

 

  - After 1ª overcall

 

After 1© opening, over 1ªovercall, jump with the new suit is artificial bid

and shows support in opening major

 

                      1ª                   

1©                               ?

 

                                            - 2©                : 6-10 fit points, at least four card support

                                            - 2ª                : limit raise or more at least three card support

                                            - 3§                : constructive raise, 5-6 HCP; four card support, unbalanced hand

                                            - 3¨               : constructive raise

                                            - 3©                : preemptive, with four card support

                                            - 3ª                : splinter, 10+ HCP, four card support

                                            - 4§                : splinter, 10+ HCP, four card support

                                            - 4¨               : splinter, 10+ HCP, four card support

                                            - 4©                : semipreemptive

 

Rules

- With three card support and balanced hand, possible double and then raise

- Over splinter, first step ask min/max. Responder must return trump with minimum; ask 4NT or

  give number of key cards, start 5§, with maximum.

 

                      1ª                 

1©                               2ª    

 ?                  

            Pass

 

- 3©                : to play

- 4©                : to play

- 3m               : game or slam try

- 2NT              : game invitation with balanced hand

- 3NT              : to play

 

Rules

If opener bid new suit

- with minimum return to 3©, with suitable hand return to 4©

- with good balanced hand and stopper, bid 3NT

- with maximum shows control.

 

 

  - After two level major overcall

 

                      2©                   

1ª                               ?

 

                                            - 2ª                : 6-10 fit points, three or four card support

                                            - 3ª                : constructive raise

                                            - 4ª                : semi-preemptive

                                            - 3©                : limit raise or more               

                                            - 3m               : natural and forcing one round

                                            - 4X                : shows shortness with 10+ HCP

 

Rules

After two level overcall, if no level for both, constructive raise more important than preemptive raise

 

 

                      2ª                   

1©                              ?

 

                                            - 3©                : less than limit

                                            - 4©                : to play

                                            - 3ª                : short in spade or strong balanced hand with support

                                            - 3m               : natural and forcing one round

                                            - 4m               : shows shortness with 10+ HCP

 

                      2ª                 

1©                               3ª    

 ?

            Pass

 

- 3NT              : asking clarification

 

Rules

If opener asking clarification with 3NT

- 4§ shows 10+ HCP with short spade, then first step asking min/max

- 4¨ shows maximum balanced hand

- 4© shows minimum balanced hand

 

  - After 2 level minor overcall

 

                      2§                   

1ª                               ?

 

                                            - 2ª                : 6-10 fit points, with three or four card support

                                            - 3ª                : preemptive with four card support

                                            - 4ª                : semipreemptive

                                            - 3§                : limit raise or more               

                                            - 2¨               : natural and forcing one round

                                            - 3¨               : constructive raise

                                            - 3©                : constructive raise

                                            - 4X                : shows shortness with 10+ HCP

 

                      2¨                  

1ª                               ?

 

                                            - 2©                : natural and forcing one round

                                            - 3§                : natural and forcing one round

                                            - 3¨               : limit raise or more

                                            - 3©                : constructive raise

                                            - 4X                : shows shortness with 10+ HCP

 

                      2§                   

1©                               ?

 

                                            - 2¨               : natural and forcing one round

                                            - 2ª                : natural and forcing one round

                                            - 3§                : limit raise or more

                                            - 3¨               : constructive raise

                                            - 3ª                : shows shortness with 10+ HCP

                                            - 4X                : shows shortness with 10+ HCP

 

 

 

 

OVER 4th HAND OVERCALL

 

* After one level responses

 

                      Pass             

1¨                              1ª    

 ?

                      2©

 

- X                  : support double

- 2ª                : four spades

- 2NT              : Good/Bad 2NT

- 3§                : at least (5-4), good hand

- 3¨               : 6+ diamonds, good hand

- 3©                : ask stopper or strong hand with four spades and heart control

- 3ª                : four spades, (17-18) dummy points

- 3NT              : to play

- 4§                : at least (5-5) and very strong hand

- 4¨               : good diamonds with four spades

- 4©                : splinter

- 4ª                : four spades, strong balanced or semi-balanced hand, no heart control

 

                      Pass             

1¨                              1©    

 ?

                      2ª

 

- X                  : support double

- 2NT              : Good/Bad 2NT

- 3§                : at least (5-4), good hand

- 3¨               : 6+ diamonds, good hand

- 3©                : four hearts, unbalanced hand

- 3ª                : ask stopper or strong hand with four hearts and spade control

- 3NT              : to play

- 4§                : at least (5-5) and very strong hand

- 4¨               : good diamonds with four hearts

- 4©                : four hearts, strong balanced or semi-balanced hand, no spade control

 

                      Pass             

1¨                              1©    

 ?

                      3ª

 

- X                  : strong hand without stopper

- 3NT              : to play

- 4§                : at least (5-5) with good hand

- 4¨               : good diamonds, good hand

- 4©                : four hearts, good hand

 

 

                      Pass             

1§                               1¨   

 ?

                      2©

 

- X                  : strong hand

- 2ª                : at least (4-5) distribution, with good hand

- 2NT              : Good/Bad 2NT

- 3§                : 6+ clubs, good hand

- 3¨               : five clubs and four diamonds

- 3©                : ask stopper or strong hand with four diamonds

- 3ª                : splinter

- 3NT              : to play

- 4§                : very long clubs, good hand

- 4¨               : RKCB for diamond

- 4©                : splinter, probably void heart

     

                      Pass             

1§                                        1¨                

 ?

                      2ª

 

- X                  : strong hand

- 2NT              : Good/Bad 2NT

- 3§                : 6+ clubs, good hand

- 3¨               : five clubs and four diamonds

- 3©                : at least (4-5) distribution, with good hand

- 3ª                : ask stopper or strong hand with four diamonds

- 3NT              : to play

- 4§                : very long clubs, good hand

- 4¨               : RKCB for diamond

- 4©                : splinter, with spade control

- 4ª                : splinter, probably void spade

 

                      Pass             

1¨                              1ª    

 ?

                      3§

 

- X                  : strong hand

- 3¨               : good 6+ diamonds

- 3©                : at least (4-5) distribution, with good hand

- 3ª                : four spades, unbalanced hand

- 3NT              : to play

- 4§                : four spades, good hand with club control

- 4¨               : very long diamonds, good hand

- 4©                : splinter, with club control

- 4ª                : four spades, strong balanced or semi-balanced hand, no club control

 

                      Pass             

1§                               1ª    

 ?

                      3¨

 

- X                  : strong hand

- 3©                : at least (4-5) distribution, with good hand

- 3ª                : four spades, unbalanced hand

- 3NT              : to play

- 4§                : 6+ clubs, good hand

- 4¨               : four spades, good hand with diamond control

- 4©                : splinter, with diamond control

- 4ª                : four spades, strong balanced or semi-balanced hand, no diamond control

 

                      Pass             

1¨                              1ª    

 ?

                      3©

 

- X                  : strong hand

- 3ª                : four spades, unbalanced hand

- 3NT              : to play

- 4§                : at least (5-5) with good hand

- 4¨               : 6+ diamonds, good hand

- 4©                : four spades, good hand with heart control

- 4ª                : four spades, strong balanced or semi-balanced hand, no heart control

 

                      Pass

                      2ª                 

1¨                              1©    

Pass                  ?

                      1ª

                                                                

                                            - 2NT              : Good/Bad 2NT

                                            - 3§                : game-invitation with five clubs

                                            - 3¨               : 4+ diamonds, approx. 10 HCP

                                            - 3©                : game-invitation with good six hearts

                                            - 3ª                : game-forcing with with five diamonds

                                            - 3NT              : to play

                                            - X                  : competitive double

 

after opener rebid, doubler bids

- Pass, chooses the contract

- turn opener first suit at three level is non-forcing

- return 3© is game-forcing with good 6+ hearts

- cue-bid, asking stopper and game-forcing

- new suit is game-forcing

 

 

                      Pass

                      2©                 

1§                               1ª    

Pass                  ?

                      X

                                                                

                                            - 2ª                : competition with 6 or good 5 spades

                                            - 2NT              : Good/Bad 2NT

                                            - 3§                : 4+ clubs, approx. 10 HCP

                                            - 3¨               : game-invitation with five diamonds

                                            - 3©                : game-forcing with with five clubs

                                            - 3ª                : game invitation with good 6+ spades

                                            - 3NT              : to play

                                            - X                  : competitive double

 

after opener rebid, doubler bids

- Pass, chooses the contract

- turn opener first suit at three level is non-forcing

- return 3ª is game-forcing with good 6+ spades

- cue-bid, asking stopper and game-forcing

- New suit is game-forcing

 

 

* After two level responses, over left hand overcall

 

                      1ª                 

1¨                              2§    

 ?

                      Pass

 

- 2¨               : 5+ diamonds, minimum

- 2©                : four hearts, if no five diamonds can be minimum, with five diamonds must be reverse hand

- 2ª                : strong hand

- 2NT              : minimum hand with stopper

- 3§                : minimum hand, non-forcing

- 3M               : splinter

- 3NT              : to play, not very strong hand

 

            1©     

1§                               2¨   

 ?

            Pass

 

- 2©                : strong hand

- 2ª                : four spades, can be minimum or reverse hand

- 2NT              : minimum hand with stopper

- 3§                : minimum hand with good suit

- 3¨               : minimum hand, non-forcing

- 3M               : splinter

- 3NT              : to play, not very strong hand

 

 

                      1ª                 

1¨                              2©    

 ?

                      Pass

 

- 2ª                : strong hand

- 2NT              : minimum hand with stopper

- 3§                : at least (5-4)

- 3¨               : minimum hand with good suit

- 3©                : minimum hand, non-forcing

- 3ª                : splinter

- 3NT              : to play