RESPONSE AT LEVEL 3 AFTER 1NT OPEN

iN A FREE BID - NO INTERFERENCE

OPENER      RESPONDER
   1NT          2  <= transfer to 3  (1) 
                   2NT <= transfer to  3  (2)
                    3  <= shows 5+ and  4   need 10-14 hcp (3)
                    3  <= shows 2-2-5-4  need 10-14 hcp (4)
                    3  <= shows 5+ 4  and singleton  (3154 or 2164) need 10-14 hcp (5)
                    3  <= shows 5+ 4  and singleton (1354 or 1264) need 10-14 hcp (6)

(1) Opener    Responder
         1ST        2
           ?
If Opener bid 3 means he have good support to Clubs (Axx or Kxx) and good stop in others suits with 16-17 hcp.
    Responder can bid 3NT with 6+ cards by Ace and jack, or 6+ cards with KQ, or even 5 with 7+ cards;
    Responder can pass if weak and no top honors;
    Responder can bid another suit to show 5+5+, showing bicolor Forcing Game (FG);
     
If opener bid 2nt, break the transfer, he deny Clubs support:
    Responder with Slam interesting, then stop interesting in Slam and bid only 3nt;
    Responder with weak hand and no top honors bid sign-off in 3;
    Responder bid another suit to show 5+5+, showing bicolor FG.

Examples of Responder hand:
(a)
xx Jx xxx KQ10xxx  (b) xx xx xxx AQ10xxx  (c) xx Kxx xx J1098xx
Abridor Respondedor
   1NT         2
    3          ? 
In (a) and (b) Responder bid 3NT, in (c) Responder pass in 3.

(2) Opener    Responder
         1NT        2NT <= transfer to 3
          3          ?
When Opener shows support in diam Responder must take a decision depending of his hand:
Examples:
(a) xx Jx AJ9xxx xxx  (b) xxxx xx Qxxxxx x  (c) x x 1087xxx Kxxxx

Opener     Responder
   1ST         2ST
     ?
In (a) Responder take a risk and bid 3NT after the good news, but if Opener bid 3 then Responder correct for 3 sign-off;
In (b) e (c) Responder have a complete sign-off hand, and should pass, but in (c) Responder should pass if Opener deny support in diam and bid 3, that is one of the justification to use the negative bidding Clubs, the other is transfer the hand to strong hand in a hard game contract.
  

Showing bicolors 5-5 and unicolor (6+ cards) strong

Opener           Responder
  1NT                2 <= transfer to 3
2NT/3   3/3/3 <= shows 5-5 / 5-5 / 5-5
                                              and Slam interesting by Responder
Opener can deny Slam interesting bidding 3NT;
Opener can select Clubs bidding 4 and waiting for cuebids;
Opener can cuebid showing option to the other suit and waiting for Responder action,
If the other suit is a major and Opener bid game in the major this shows weak NT open.

Opener          Responder
   1NT               2
 2NT/3         4 <= strong hand with 6+ cards and at least 2 top honors asking for Opener cuebid


Opener         Responder
  1NT                2NT <= transfer to 3
3/3      3/3 <= Shows 5-5 / 5-5
                                         and Slam interesting

Opener        Responder
   1NT               2NT
 3/3         4 <= strong hand (6+ cards) with at least 2 top honors and ask for Opener cuebid

Responder Shows 5-5 in majors with FG and sign-off

Opener           Responder                                              Opener      Responder
   1NT               2 <= transfer para                          1NT            2 <= transfer to           
    2               2 <= shows 5-5 sign-off              2            3 <= 5-5 FG
                                     Opener prefere with 3        Opener decide for a major or sign-off in 3NT 
                                                                                            then Responder with 6-5 bid his 6th major suit                                      

Search for a minor suit after 1NT open

Opener         Responder
   1NT             2 <= stayman
   2              3 <= second stayman
     ?
Opener bid: 3 with 4-3-3-3 and indefined suit
                      Responder makes a relay with 3 and Opener define his minor suit: 
                            3 <= 3-3-3-4     and    3NT <= 3
-3-4-3
Opener bid: 3 with both minors and 3 cards h => 2-3-4-4  
Opener bid: 3 with both minors and 3 cards s => 3-2-4-4 
Opener bid: 3NT with 5 cards in a minor:
                             Responder makes a relay in 4 and Opener define the minor:
                             Opener bid 4 with 5
                             Opener bid 4 with 5 (deny A) and bid 4 with 5 and the A

Opener         Responder
   1NT             2 <= stayman
   2              3 <= second stayman
     ?
Opener bid: 3 with 4-4
Opener bid: 3 with 4-4  
Opener bid: 3 with 4-4
Opener bid: 3NT with 3-4-3-3 

Opener         Responder
   1ST             2 <= stayman
   2              3 <= second stayman
     ?
Opener bid: 3 with 4-4 
Opener bid: 3 with 4-4
Opener bid: 3NT with 4-3-3-3 

(3) How to show 5+-4 after 1NT open

Opener        Responder
   1ST           3  <= with 5+ e 4
    ?
3 <= relay, the Opener ask for Responder distribution
                         Responder bid:
                         3   singleton with 
x=1=4=5+ 10-14 hcp
                                  Opener bid bid 3 with stop in denying stop in and Responder must decide the contract
                                  Opener bid 3ST with stop in both majors and no interesting in Slam in a minor suit
                                  Open bid a minor suit at level 4 showing Slam interisting and asking for Responde cuebid
                         3   singleton with  1=x=4=5+ 10+ hcp
                                  Opener bid 3NT with stop in both majors and no interesting ST com boa pega nos ricos ou marca naipe pobre em nível 4   
                        3NT 
  with  2=2=4=5    10-14 hcp
                        4NT   with  2=2=4=5    15-16 hcp quantitative (invitation to Slam)
                        5NT   with 
2=2=4=5    17-18 hcp forçing Slam (Opener must decide the Slam contract)
3NT <= Opener have no interesting in minor suit contract, probable: 4-4-3-2

(4) How to show 2-2-5-4 after 1NT open

Opener       Responder
   1NT           3  <= 2-2-5-4
    ?
3  <= shows stop in but deny stop in
3  <= shows stop in but deny stop in
3ST <= no interesting in minor suit contract, probable: 4-4-2-3
4  <= interesting in Slam with 4+ and ask for Responder cuebid
4  <= interesting in Slam with 4+ and ask for Responder cuebid

(5) How to show x-1-5+4 after 1NT open

Opener        Responder
   1NT           3  <= x-1-5+4
    ?
3  <= shows stop in and deny stop in
3NT <= no interesting in minor contract, probable: 4-4-2-3
4  <= interesting in Slam with 4+ and ask for Responder cuebid
4  <= interesting in Slam with 4+ and ask for Responder cuebid

(6) How to show 1-x-5+4 after 1NT open

Opener        Responder
   1NT           3  <= 1-x-5+4
    ?
3NT <= no interesting in minor contract, probable 4-4-2-3
4  <= interesting in Slam with 4+ and ask for Responder cuebid
4  <= interesting in Slam with 4+ and ask for Responder cuebid


Smolen in 6-4 or  5-4 or  6-4 or 5-4

Opener         Responder                                                 Opener      Responder
   1NT            2                                                                 1NT           2
    2            3 <= Smolen (5-4)                            2           3 Smolen (5-4)
     ?                                                                                        ?
Opener bid:                                                                       Opener bid:
    3 shows 3 minimum                                                   3ST deny 3 cards suport
   3NT deny 3 cards support                                                 4 shows 3 maximum and cuebid
    4 shows 3 with maximum and cuebid                     4 shows 3 maximum and cuebid  
    4 shows 3 with maximum and cuebid                     4 shows 3 and minimum

Opener        Responder                                                   Opener     Responder
   1NT            2                                                                 1ST           2
    2            3 <= Smolen (5-4)                            2           3 Smolen (5-4)
    3              ?                                                                   3ST             ?
Responder bid:                                                                 Responder bid:
                3ST com mão 5-4-2-2                                4 splinter (6-4) interesting in Slam
                 4 splinter  (6-4) try to Slam                        4 splinter (6-4) interesse em Slam
                 4 splinter  (6-4) try to Slam                        4 to play
                 4 cue-bid deny control in minors                      4NT quantitative 5-4-2-2 and 15-16 hcp
                 4 to play                                                                        Opener pass or bid 6NT

two sequences not forcing
Open          Responder                                                  Abridor   Respondedor
  1ST           2                                                                   1ST            2
  2            2 (5-4 or 4-4) < 7 hcp)                2            2 (5-4) < 7 hcp)
   ?                                                                                         ?
Open pass with 3 cards or bid 2 with 3 cards         Opener pass
should not bid 3                                                            should not bid 3


COROLLARY

Opener     Response                                                          Opener    Responder
  1NT            2                                                                      1NT           2
   2
          3/3 <= the minor is only 4 cards              2        3/3 <= the minor is only 4 cards

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