1H/S
(M): Natural, often 5+ cards suit
Summary: Non-forcing 1NT, Splinter, French 2NT
- Raises
- 2/3/4M: Limit raise
- Double Jump Shift: Splinter
- 2NT: 10-11HCP, 3 card
fit, balanced or semi-balanced
- Shifts
- Jump: Strong
- 3S over 1H: Splinter
- 4H over 1S: Splinter
- 4S over 1H: To play
- 2/1: round forcing
- 1S: 4+ spades,
round forcing
- 1NT: Non-forcing
Responses after
opponent’s Takeout DBL
- Raises: Preemptive
- 1NT: To play
- 2NT: 4+ fit, constructive
or stronger
- 3NT: To play
- 1/1: Natural, forcing
- 2/1: Natural, non-forcing
- RDBL: 9+ HCP or
constructive raise with 3-card fit
- Jump shift: Weak
Responses after opponents
Natural Over-call
- Raises: Preemptive
- 1NT: To play
- 2NT: 4+ fit, constructive
or stronger
- DBL: Negative up to 4H
- New suit: Natural, round
forcing
- Cue-bid: 3+ fit, limit+
- Jump cue-bid: Splinter
- Jump shift: Weak
Responses by a passed hand
- 2C (Reverse Drury):
3+ fit
- 2M: Weak
- 2H after 1S: Weak, 5+4+
- Reverse 2S or higher: Natural,
slam try
- 2D: Otherwise
- Other shifts: Natural,
non-forcing
- Jump shift: Good suit and fit in opener's
suit
- 2NT: 4+ fit, 10-11 HCP
- 1S over 1H: Round forcing
- 1NT over 1S: Non-forcing
Other opener rebids
- Jump shift: game forcing
- 1M-2m-3m: 4+ fit, forcing
- 1S-2H-3H: 3+ fit, forcing
- Implication: 2/1 is self forcing for one round (cannot pass over opener's rebid)