Subsequent bidding after 1NT opening

Question 1

1NT
pass
2♠️
pass
???

Answer 1

2♣️
responder will accept or correct to 2♦️

Question 2

1NT
pass
2♣️
pass
any
pass
3 of a minor

Answer 2

Forcing to game
Invitational to slam
28+ points combined with partner
5+ card in minor
4-card major not guaranteed

Question 3

1NT
pass
2♣️
pass
???

Answer 3

Stayman
2♦️ no 4-card major
2♥️ 4+ in suit or 4+ in both
4♠️ 4+ in suit

Question 4

1NT
pass
2♣️
pass
2 of major
pass
???

Answer 4

Stayman responder continuations
2♠️ shows 5♠️/4♥️, invitational to game (with 5♥️/4♠️ just raise)
2NT 4+ in other major, game invite
3 of a minor = 5+ cards, 28+ points, game force, slam inivte
3 of same major, game invite
3 of the other major shows 5/4 split in majors, game force
3NT 4+ in other major
4 of same major is game
8-9 points is invitational to game
10 points is game

Question 5

1NT, pass,
2♦️ / 2♥️, pass,
2♥️ / 2♠️, pass,
???

Answer 5

Jacoby transfer continuations
weak hand, long suit
- pass
any new suit is forcing for a round except
8-9 points, invite game
- 2♦️ then 2♠️ to show 5/5 majors,
- 2NT only 5 cards
- raise to 3 showing 6+ cards
10+ points, force game
- 2♥️ then 3♥️ to show 5/5 majors
- 3NT only 5 cards
- raise to 4 shows 6+ cards

Question 6

1NT
pass
2♦️ / 2♥️
pass
3♥️ / 3♠️

Answer 6

Texas transfer
17 HCP
4+ trump support

Question 7

1NT
pass
2♣️
pass
2♦️
pass
???

Answer 7

4 card major denied:
With 5 cards in a major and 4 in the other, bid the 5-card suit
- 2 level for 9-9 points invitational
- 3 level for hame force
With 5+ cards ion a minor and 28+ points combined, bid 3 off a minor3 of a minor
With balanced hand, 2NT 8-9 shows points