Redouble is shows same as 1♥ response
- However may contain 5 spades and game force responses are the same as 1♥ but can bid hearts and spades by opener, so should bid 5 card suit first not 4 card majors.
- Game forcing but may not be slam and allows conversion to penalty depending on next bid
Pass shows the 1♦ response but 0-4 HCP
- If opener responds it could be passed so jump for game force
- This is true even if the bid shows both minors
1♦ shows 5-7 HCP
- Shows some values and can start to decide on penalty if they keep going
- This promises there will be one more bid
Non-jump bids show at least 6 cards and 8+ points, 1NT is positive 12+ (stayman on but transfers off)
Any jump-shift is 5-7 HCP and long suit (6 at the 2 lvl and 7 at the 3lvl) with all values in that suit