2§ natural                   

1NT                ?

                                            - Double          : Stayman

                                            - Others          : System on

           2¨ natural                  

1NT                                      ?

                                            - Double          : negative

                                            - 2M                                     : to play

                                            - 2NT                                    : transfer to 3§, for Lebensohl as well competitive

                                                                                         or game-forcing hands with long club suit

                                            - 3§                                      : both majors at least (4+4), game-forcing

                                            - 3¨                                     : transfer to 3© at least game invitation

                                            - 3©                                     : transfer to 3ª at least game invitation

                                            - 3ª                                     : game invitation with good six clubs

                                            - 3NT                                    : to play without stopper, no four card major

Rules

* Negative Double then cue-bid shows four card major with game-forcing hand and without stopper. If  

  opener rebid one major and responder bid 3NT, this bid shows four card in unbid major without   

  stopper.  

* Over 3§ response, opener must bid four card major. If he has no major, he can bid 3¨ with

   any three card major or bid 3NT for play there, probably with (2-2-4-5).

* If opener bid 3¨ over 3§ response, now responder use Smolen with (4-5) majors; bid 4¨ with

  (5-5) majors for choose the game, or bid 4§ with slammish hand.

           2© natural                 

1NT                                      ?

                                            - Double          : negative

                                            - 2ª                                     : to play

                                            - 2NT                                    : transfer to 3§, for Lebensohl as well competitive

                                                                                         or game-forcing hand with long club suit

                                            - 3§                                      : transfer to 3¨, competitive or game-forcing

                                                                                         hands with long diamond suit

                                            - 3¨                                     : transfer to 3ª at least game invitation

                                            - 3©                                     : Stayman, without heart stopper

                                            - 3ª                                     : game invitation with good six card minor

                                            - 3NT                                    : to play without stopper, no four spades

Rules

* Over spade transfer, opener’s 3ª shows minimum.

* Over 3ª response, opener’s rebids 4§ for Pass or correct; 4¨ asks to play there or transfer

  to 5§ with 4NT if responder has long club suit and four level cue-bid need transfers to responder

  minor.

* If responder has game-forcing hand with long club suit, after complete the transfer he can rebid any

  unbid suit.

           2ª natural                   

1NT                                      ?

                                            - Double          : negative

                                            - 2NT                                    : transfer to 3§, Lebensohl; game forcing hand

                                                                                         with long clubs or competitive hand with clubs

                                                                                         or with hearts

                                            - 3§                                      : transfer to 3¨, competitive or game-forcing

                                                                                         hand with long diamond suit

                                            - 3¨                                     : transfer to 3© at least game invitation

                                            - 3©                                     : game invitation with good six card minor

                                            - 3ª                                     : Stayman, without spade stopper

                                            - 3NT                                    : to play without stopper, no four hearts

Rules

* Responder 3¨ rebid shows competitive hand with hearts, after 2NT response

DEFENSE AGAINST LANDY, CAPP and MULTI

           2§ Landy                    

1NT                                      ?                   

                                            - 2¨                                                           : transfer to 2©

                                            - 2©                                                           : transfer to 2ª
                                            - 2ª                                                           : competitive with both minors or game-forcing

                                                                                                               with (2-2-4-5), (2-2-5-4)

                                            - 2NT                                                          : transfer to 3§(Lebensohl), then 3M shows stopper

                                                                                                               or four card in other major and (x) or (xx) in this major

                                            - 3minor                                : shows other minor, forcing

                                            - 3©                                                           : at least (5-4) minors, with short heart, game-forcing

                                            - 3ª                                                           : at least (5-4) minors, with short spade, game-forcing

                                            - 3NT                                                          : to play

                                            - Double                                : for penalty, against one or both majors

                                            - Pass and Double                 : for take out

           2§ Capp                     

1NT                                      ?

                                            - Double                                : Stayman

                                            - 2¨                                                           : transfer to heart
                                            - 2©                                                           : transfer to spade

                                            - 2ª                                                            : transfer to club

                                            - 2NT                                                          : transfer to diamond

                                            - 3§                                                           : short club

                                            - 3¨                                                           : short diamond

                                            - 3©                                                           : short heart with bicolor minors

                                            - 3ª                                                           : short spade with bicolor minors

                                            - 3NT                                                          : to play

                                            - 4§                                                           : Gerber

                                            - 4¨                                                           : transfer to heart, Texas

                                            - 4©                                                           : transfer to spade

           2¨ Capp                   

1NT                                      ?

                                            - 2©                                                           : shows at least five card in one major, game-forcing

                                                                                                                then, after openers 2nd or 3rd round relay bid,

                                                                                                               3ª shows five hearts; 3©, 3NT or four level bids shows

                                                                                                                five spades

                                            - 2ª                                                           : competitive with both minors or game-forcing       

                                                                                          with (2-2-4-5), (2-2-5-4)

                                            - 2NT                                                          : transfer to 3§(Lebensohl), then 3M shows stopper

                                                                                                               or four cards in other major and (x) or (xx) in this major

                                            - 3m                                                          : shows other minor, forcing

                                            - 3©                                                           : at least (5-4) minors, with short heart, game-forcing

                                            - 3ª                                                           : at least (5-4) minors, with short spade, game-forcing

                                            - 3NT                                                          : to play

                                            - Double                                : for penalty, against one or both major

                                            - Pass and Double                 : for take out

           2¨ Multi                   

1NT                                      ?

                                            - 2©                                                           : shows at least five card in one major, game-forcing

                                                                                                                then, after openers 2nd or 3rd round relay bid,

                                            - 3ª                                                           : shows five hearts; 3©, 3NT or four level bids shows

                                                                                                                five spades

                                            - 2ª                                                           : competitive with both minors or game-forcing      

                                                                                          with (2-2-4-5), (2-2-5-4)

                                            - 2NT                                                          : transfer to 3§(Lebensohl), then 3M shows stopper

                                                                                                               or four cards in other major and (x) or (xx) in this major

                                            - 3m                                                          : shows other minor, forcing

                                            - 3©                                                           : at least (5-4) minors, with short heart, game-forcing

                                            - 3ª                                                           : at least (5-4) minors, with short spade, game-forcing

                                            - 3NT                                                          : to play

                                            - Double                                : Stayman

                                            - Pass and Double                 : for take out