IMPORTANT: opener with minimum hand should rebid 1NT or PASS after interference
Limited raise:
- level 2 with 4+ cards support and 6 – 9 HCP
- level 3 with 4+ cards support and 10 – 12 HCP
- level 4 with 4+ cards support and 13+ HCP
Limited raise are off in competition. Jump raises become pre-emptive…….. so responder can bid 2NT over opponent X (what means level 3 rise) and leave jump raise for pre-emptive purpose. Over overcall responder can cue-bid oponent suit to show strong support.
1NT – shows 6 – 8 HCP (dust bin NT)
New suit on level 1 is 6+ HCP
New suit on level 2 is 9+ HCP
X after oponent interference means points but unable to bid (it is not negative X)
2NT Jacoby – game forcing after 1♥, 1♠ opening. 4+ support, 13+ HCP…… with Slam hopes. Opener rebids.
Double Jump Suit – Splinter