2NT opening

Shows 20-22HCP and normally a balanced (4333, 4432, 5332) hand.
Semibalanced (6322, 5422, 4441) hands are allowed, if there are honours in the short suit(s)
Responder's answers
3 Puppet stayman (asks for 4 or 5 card majors)
3




Jacoby transfer to 3 (accept) or 4(super-accept)
Responders raise to 4 is a mild slam try
Responders rebid of 4NT shows 5332 with slam invite
Responders new suit shows a 5+4+
(Now opener has 3 choices: lowest NT: to play - Cue confirms 2. suit - return to )
3




Jacoby transfer to 3 (accept) or 4(super-accept)
Responders raise to 4 is a mild slam try
Responders rebid of 4NT shows 5332 with slam invite
Responders new suit shows a 5+4+
(Now opener has 3 choices: lowest NT: to play - Cue confirms 2. suit - return to )
3 Minor-suit stayman game forcing (with minor 1-suiter and weak hand, just pass)
3NT To play
4 Gerber asking for Aces (4=1; 4=2; 4=3, 4NT=4)
5 from responder is asking for Kings with the similar responses at the 5 level
4 Texas transfer to 4; start for signoff or RKCB
4 Texas transfer to 4; start for signoff or RKCB
4

Invite to 6 minor or 6NT, 3244 or 2344.
Answers:
5NT to play
5C 4+
5D 4+ diamonds
5H 3244
5S 2344
5NT interested but no 4 card minor

6C, 6D 6NT to play
4NT Invite to 6NT, very probable 4333
5NT Forcing to 6NT, Invite to 7NT, very probable 4333