This is showing 3 card support and the top of the range. This bid is done with as little as 5 points so invitational is a big lower. No fit is minimum of 6 points
2M - Sign-off (16-17 HCP)
- Could only have 4 cards in the M
2NT invite in no trump (17-19 HCP)
- Any responding minor bid is showing 6+ cards and almost all values in that suit KQxxxx
- This basically shows a fear of NT and non forcing so opener can pass on low range
- Denies a 5 card major and responder can pass with the low end
3m - slam interest in bid minor, rebid major if no fit or start cue bidding if interest
3M - 5+ of Major and invite (18-19 HCP)
3NT - Not interested in slam (20-23 HCP)
- If hearts was the major may not have had hearts and could have been trying to show the 20-21 HCP balanced hand
Jump-Shift to other Major shows slam interest and 5+ of bid Major
Any other bid is game force and showing a 4+ card suit