1C/D: Natural, best minor (1C with 4333/3433)

• 3/4/5C/D: 5+ fit, pre-empt
• 2C/D: 4+ fit, round forcing. At least the equivalent of a limit raise to 3C/D.
• 3NT: 18-19 HCP, exactly 3 cards in opening suit
• 2NT: Round forcing, stoppers in the other suits
• 3C/D: Sign off
• New suit: Singleton in the suit.
• 4C/D: RKCB
• Jump in a new suit: Asking bid in the suit (See “Slam conventions”)
• NT: Quantitative
• New suit (X): Forcing, stopper, denies stopper(s) in any lower un-bid suit
• 3C/D: Sign off
• New suit: Forcing, stopper, denies stopper(s) in any lower un-bid suit.
• NT: Quantitative with all remaining stoppers
• 3X: Splinter.
• 4C/D: RKCB
• 4X or Jump in a new suit: Asking bid in the suit (See “Slam conventions”)
• Jump in new suit: Splinter
• 4C/D: RKCB
• 3C/D: Minimum, unbalanced
• Double jump in a new suit: Asking bid in the suit (See “Slam conventions”)
• 2C over 1D : 4+ suit, Forcing to 4C or 4D
• 3NT: 15-17 HCP, 4441
• 2NT: Stoppers in the majors
• 2H/S/3C: 5-4, at least a good opening hand (less than a reverse)
• 3H/S: Splinter. Fit in clubs
• 4C: RKCB with trump clubs
• 3D: 6+ good suit, at least a good opening hand (less than a reverse)
• 2D: Otherwise (may have 3 small diamonds in the worst case)<>
  

• 1D (French Walsh): Natural, round forcing. If done with a 4-card major suit, it must be either with Game Forcing values or with Invitational values concentrated in the 2 long suits - 5+ diamonds and 4 in a major.
• 1H/S: 4+ hearts/spades, un-balanced
• 1S: 4^th Suit Forcing
• 1NT: 11-14 HCP, 5-4, stopper in spades
• 2NT: 15-17 HCP, 5-4, stopper in spades
• 3NT: 18-19 HCP, 5-4, stopper in spades
• 2D: 11-14 HCP, 1435
• 3D: 15+ HCP, 1435
• 2S: 11-14 HCP, 4414 or 4405
• 3S: 15-17 HCP, 4414 or 4405
• 2C: 11-14 HCP, 5+ clubs and 4 hearts, no spade stopper
• 2H: 15-17 HCP, 5+ clubs and 4 hearts, no spade stopper OR 6+ clubs and 5+ hearts
• 3C: 15-17 HCP, 6+ clubs and 4 hearts
• 2H/S: 15+ HCP, 4+ fit
• 3H/S: 10-11 HCP, 4-card fit
• 4H/S: 12-14 HCP, 4-card fit, no short suit
• 4D: 4-card fit in a 5422 concentrated in the 2 long suits
• Double Jump in a new suit: Splinter
• 3C/D: Invitational
• 2S/3H: The “impossible bid”. 6 diamonds and 5 spades/hearts.
• 1NT: 12-14 HCP, balanced, may have 4-card major suit(s)
• 2C: ?
• 2D: ?
• <>3C: ?
• <>3D: ?
• <>2H/S: 5+ diamonds and 4 hearts/spades, concentrated in the long suits, invitation to game
• 2H/S: 5+4+, reverse
<>
• 2NT: 18-19 HCP, balanced, may have 4-card major suit(s)
• 3C: Wolf sign off
• 3D: 6+ diamonds
• 3H/S: 12+ HCP, 5+ diamonds and 4 hearts/spades
• 3H/S: Splinter
• 1H/S: Forcing for one round, 4+ suit
• 1S
• 1NT
• 3H: 15-17 HCP, 4315/4351
• 2D/C (the other minor): Same but 12-14 OR 18-19
• 2H: 14-16 HCP, 4315/4351/4324/4342
• 1NT: 12-14HCP, balanced
• 2C: Checkback Stayman
• 2H/S: Sign off, 5+ suit
• 3H/S: 6+ suit, limit (usually with good suit)
• 2H after 1S: Sign-off, 5+4+ in the majors
• 2D: Sign off
  
• Jump in a new suit: 5+4+ (5+ if hearts), Game Forcing
  
• 2NT: 18-19HCP, balanced
• 3C: Wolf sign off
• 3D: Checkback Stayman
• 3H/S: Forcing
• 4H/S: Sign off
• 3H after 1S: 5+5+ in majors, slam interest
• 4H after 1S: 5+5+ in majors, choice of game
• New suit: Not forcing
• Jump (or reverse) in new suit: Forcing
• Repeat opening suit: Not forcing, 5+ suit
• Jump in opening suit: Not forcing, 6+ good suit
• Double jump in new suit: Splinter. Fit in responder's suit
• 2/3/4H/S: Limit, 4+ fit
• Double jump in opening suit (4C/D): 4-card fit, 5422 distribution with good 5-card suit
• 3NT: 4+ fit, strongest possible bid
• 3C over 1D or 2D over 1C: Good 6+ suit, weaker than 2C over 1D
• 3D over 1C: Pre-empt
• 4C over 1D or 4D over 1C: Good suit and big fit
  
• 2/3/4H/S: Pre-empt
• 1NT: 8-10 HCP over 1C; 6-10 HCP over 1D
  • 2NT: Values for 3NT, short in the other minor
• 2NT: Invitation to 3NT
• <>3NT: Sign off, no interest in slam
  

Responses after opponent’s Takeout DBL

• Simple & Jump raises not inverted
• 1NT: To play
• 2NT: 5+ fit limit or stronger; Round forcing
• 3NT: Sign off
• 1/1: Natural, forcing
• 2/1: Natural, non-forcing
• RDBL: 9+ HCP, does not deny 4-card fit
• Jump shifts in a major by a passed hand: Good suit + fit
• Other jump shifts: Unchanged

Responses after opponent's natural overcall

• Simple & Jump raises not inverted
• NT: Stopper, limit
• DBL: Negative up to 4D
• New suit: Natural, round forcing (not auto-forcing)
• Cue-bid: Asking for a stopper or 4+ fit, limit+
• Jump cue-bid: Splinter
• Jump shifts in a major by a passed hand: Good suit + fit
• Other jump shifts: Unchanged