No-Trump Responses

2♣ - Stayman

◇ Opener must be 4-4 in the Majors to use stayman

2♦ - 11-12/13 Min Range denies a 4 card major

ALERT

2♥ - Showing stopper looking for other major (at least good 13+)
2♠ - Showing stopper looking for other major (at least good 13+)
2NT nothing to add (11-13)
- 3♣ - Sign-off by opener
- 3♦ - Sign-off by opener
3♣ - 6+ and singleton or void, concern for NT (why not inverted minor? Let's say inverted minor has some interest in NT)
3♦ - 6+ and singleton or void, concern for NT

2♥/2♠ Opener bids 4 card major

2NT - 15-17 HCP with no 4 card major

3♣ - Showing 6+ slam interest
3♦ - Showing 6+ slam interest
3♥ - Showing suit; concern for other major (should be a big concern to give away the information)
3♠ - Showing suit; concern for other major (should be a big concern to give away the information)
3NT - to play

3NT - 13/14 HCP

with no 4 card major

4♣ - Gerber

3♣ - Stayman

◇ Opener must be 4-4 in the Majors to use stayman

3♦ - Natural

Bidding a Major promises 4

3NT - Denies 4 card major 11-15 HCP

4♣ - Gerber

4NT - 16 pts, quantitative, no 4-card major