OPENING 1 MAJOR RESPONSE 3NT

Opener second bid after response in 3nt
Opener Responder
 1
/1   3nt <= balanced with 3 cards support and 16-17 hcp
 
Many partnership use this response to show a balanced hand with 13-15 hcp and only 2 cards in the major opening, but here lets use an agreement that this response means also a balanced hand 4333/4432 but having 3 cards support and 16-17 hcp.

Thus, what to do after 1 major response 3nt?
Possible options are:

=====================================
===  1
response 3nt
=====================================

1- pass => when our opening is weak 12-15 hcp with distribution 5332 and our major suit has only one top honor pass is the best option;
Opener Responder
 1        3nt
 pass

2- 4
sign-off => when we have 12-14 hcp and unbalanced hand 5431 5521 5530 6331 with 2 top honors but not solid suit we sign-off;
Opener Responder
 1
        3nt
 4
<= sign-off

3- 4nt RKB1430 => taking charge with 15+ hcp and solid with 2 top hnors then we should search for Slam asking for keycards to have better decision make, or also to search a specific honor/distribution in a specific suit using SSA in another suit;
Opener Responder
 1
         3nt
 4nt <= RKB1430
 
4- When we have 15-17 hcp with good suit having 2 top honors in our suit then we may inform our high honors to parters bidding in 4 steps (excluding 4nt and our suit):
Opener Responder
  1
       3nt <= balanced with 3 cards and 16-17 hcp
   step1 = any (2A + 2K) with trump's Queen        => 4

   step2 = any (3A + 1K) without trump's Queen   => 4

   step3 = any (3A + 1K) with trump's Queen        => 4

   step4 = any 4 keycards without trump's Queen  => 5

After Opener shows his hand Responder is the captain to decide:
- sign-off;
- bid Slam
- search a Specific Suit Asking (SSA) where the answer are:
   - first step - third control in that suit (xx or Qxx)
   - second step - second control - Kxx(x)
   - third step - Kx or KQx
   - whitout any control then return to the agree major suit at level 5

Thus after Opener shows his hand Responder bids:
after 4

   4
: SSA in
   4
: SSA in
   4
: sign-off
   5
: SSA in
   6
: to play
After 4

   4
: SSA in
   4
: sign-off
   5
: SSA in
   5
: SSA in
   6
: to play
After 4

   4
: sign-off
   5
: SSA in
   5
: SSA in
   5
: SSA in
   6
: to play
After 5

   5
: SSA in
   5: SSA in
   5: sign-ff
   6: SSA in
   6: to play

=========================================
===  1
response 3nt
=========================================
 
Opener second bid after response in 3nt
Opener Responder
  1
       3nt <= balanced with 3 and 16-17 hcp
   ?

Opener bids:
1- pass - minimum / not good suit balanced

2-sign-off - minimum / not godd suit unbalanced
Opener Responder
 1
        3nt
 4
<= sign-off

3- 4nt RKB1430 => taking charge with 15+ hcp and solid suit with 2 top hnors then we should search for Slam asking for keycards to have better decision make, or also to search a specific honor/distribution in a specific suit using SSA in another suit;
Opener Responder
 1
         3nt
 4nt <= RKB1430

4- When we have 15-17 hcp with good suit having 2 top honors in our suit then we may inform our high honors to parters bidding in 4 steps (excluding 4nt and our suit):
Opener Responder
  1
       3nt <= balanced with 3 cards and 16-17 hcp
   step1 = any (2A + 2K) with trump's Queen        => 4

   step2 = any (3A + 1K) without trump's Queen   => 4

   step3 = any (3A + 1K) with trump's Queen        => 4

   step4 = any 4 keycards without trump's Queen  => 5

After Opener shows his hand Responder is the captain to decide:
- sign-off;
- bid Slam
- search a Specific Suit Asking (SSA) where the answer are:
   - first step - third control in that suit (xx or Qxx)
   - second step - second control - Kxx(x)
   - third step - Kx or KQx
   - whitout any control then return to the agree major suit at level 5

Thus after Opener shows his hand Responder bids:
after 4

   4
: SSA in
   4
: sign-off
   4
: SSA in
   5
: SSA in
   6
: to play
After 4

   4
: sign-off
   4
: SSA in
   5
: SSA in
   5
: SSA in
   6
: to play
After 4

   pass - sign-off
   4
: SSA in
   5
: SSA in
   5
: SSA in
   6
: to play
After 5

   5
: SSA in
   5: sign-off
   5
: SSA in
   6: SSA in
   6
: to play