One Club opener Flashcards
1C - 1D
0-7
Exceptions :
6-card good major (4-7)
7-card suit to 2 top honours (de facto 5-7)
1C- 1H
8-10 points and an undisclosed 5-card suit
or suits
1C - 1S
8+ points and 4432 or 4333 distribution
1C - 1NT
“Multi”
Either weak 2 in major
or
8+ 4441 or 5440
1C - 2C
11+ 5-card C or D suit
(If 2-suited -
- bid 2S with 5/4 in the minors (3/1 majors, or 1NT
if 5440),
- bid 2C with 5/5 or 6/4 and clarify after 2D relay
with 2NT (5/5) or 3-level bid with 6/4)
1C - 2D
11+ 5-card H suit
submarine bid
1C - 2H
11+ 5-card S suit
submarine bid
1C - 2S
11+ 5/4 minors (and 3/1 in the majors)
(This is the only 2-suited response in the 11+ range)
(With 5/5 or 6/4 in the minors bid 2C and clarify after 2D relay with 2NT (5/5) or 3-level bid with 6/4)
Compare 8-10 1C-1H-1S-2S also 5/4 (3/1)
1C - 2NT
8-10 points and 5/5 major and minor
This is the only 2-suited response in the 8-10 range
1C - 3C
5-7 points, 7-card D suit, 2 of top 3 honours
submarine bid
1C - 3D
5-7 points, 7-card H suit, 2 of top 3 honours
submarine bid
1C - 3H
5-7 points, 7-card S suit, 2 of top 3 honours
submarine bid
1C - 3S
5-7 points, 7-card C suit, 2 of top 3 honours
submarine bid
1C - 1D - 1H - 1S
Balanced or 3H or 0-4 weak
With a S suit and 5-7, bid 1NT (without 3H support)
1C - 1D - 1H - 1NT
5-7 points, 5-card S suit (or poor 6), denies 3H
1NT replacing artificial 1S bid
1C - 1D - 1H - 2C
5-7 points, 5-card C suit, denies 3H
no submarine, both C & D already bid
1C - 1D - 1H - 2D
5-7 points, 5-card D suit, denies 3H
no submarine, both C & D already bid
1C - 1D - 1H - 2H
5-7 points, 5/5 in the majors
After 1C-1D-1H, there are three 2-suited responses
- 2H 5/5 majors,
- 2S 5/5 minors,
- 2NT 5S/4H
1C - 1D - 1H - 2S
5-7 points, 5/5 in the minors
After 1C-1D-1H, there are three 2-suited responses
- 2H 5/5 majors,
- 2S 5/5 minors,
- 2NT 5S/4H
1C - 1D - 1H - 2NT
5-7 points, 5S and 4H
After 1C-1D-1H, there are three 2-suited responses
2H 5/5 majors, 2S 5/5 minors, 2NT 5S/4H
1C - 1D - 1H - 1S - 1NT
16-19 balanced
1NT here does not contain a 5-card suit
1C - 1D - 1H - 1S - 2H
5+H
(no 2nd suit as covered by other bids)
(with 6H, bid 3H if strong enough to do so over 1D)
1C - 1D - 1H - 1S - 3H
6H stronger than minimum, given responder has shown nothing
1C - 1D - 1H - 1S - 2C
5H 4C
1H not followed by 1NT so must have H suit
1C - 1D - 1H - 1S - 2D
5H 4D
1H not followed by 1NT so must have H suit
1C - 1D - 1H - 1S - 3C
5H 5C
1H not followed by 1NT so must have H suit, jump shows side suit is 5+ not 4
1C - 1D - 1H - 1S - 3D
5H 5D
1H not followed by 1NT so must have H suit, jump shows side suit is 5+ not 4
1C - 1D - 1H - 1S - 3S
6H 5S no outside losers
1C - 1D - 1H - 1S - 4C
6H 5C no outside losers
2C would show 5/4 and 3C 5/5
1C - 1D - 1H - 1S - 4D
6H 5D no outside losers
2D would show 5/4 and 3D 5/5
1C- 1D - 1H - 2H - 2NT
Asking for strength and shape
Bid the shortage (minimum) or equivalent (maximum)
1C - 1D - 1H - 2H - 2NT - 3C
Step 1 - minimum, shortage in C
Bid the shortage (minimum) or equivalent (maximum)
1C - 1D - 1H - 2H - 2NT - 3H
Step 3 - maximum, shortage in C
Bid the shortage (minimum) or equivalent (maximum)
1C- 1D - 1H - 2H - 2NT - 3S
Step 4 - maximum, shortage in D
Bid the shortage (minimum) or equivalent (maximum)
1C- 1D - 1H - 2H - 2NT - 3D
Step 2 - minimum, shortage in D
Bid the shortage (minimum) or equivalent (maximum)
1C- 1D - 1H - 2S - 2NT
Asking for strength and shape (2S showing 5/5 minors)
Bid the shortage (maximum) or equivalent (minimum)
1C- 1D - 1H - 2S - 2NT - 3C
Step 1 - minimum, shortage in H
Bid the shortage (maximum) or equivalent (minimum)
1C- 1D - 1H - 2S - 2NT - 3D
Step 2 - minimum, shortage in S
Bid the shortage (maximum) or equivalent (minimum)
1C- 1D - 1H - 2S - 2NT - 3H
Step 3 - maximum, shortage in H
Bid the shortage (maximum) or equivalent (minimum)
1C- 1D - 1H - 2S - 2NT - 3S
Step 4 - maximum, shortage in S
Bid the shortage (maximum) or equivalent (minimum)
1C - 1D - 1S
S suit, 5+
A natural bid !
1C - 1D - 1NT
C suit, 5+
submarine bid - can be completed with weak hands
1C - 1D - 2C
D suit, 5+
submarine bid - can be completed with weak hands
1C - 1D - 2D
5H 4S non-forcing
forcing equivalent is 1C - 1D - 1H - 1S - 2S
1C - 1D - 2H
Game force, starts trump asking sequence
1C - 1D - 2S
Game force, starts trump asking sequence
1C - 1D - 2NT
20-21
1C - 1D - 3NT
26-27
1C - 1D - 1H - 1S - 2NT
24-25
1C - 1D - 1H - 1S - 3NT
28-29
1C - 1D - 3C
Very strong. Game force and slam interest
1C - 1D - 3D
Very strong. Game force and slam interest
1C - 1D - 3H
Very strong. Game force and slam interest
1C - 1D - 3S
Very strong. Game force and slam interest
1C - 1D - 1S - pass
0-3
1C - 1D - 1S - 1NT
4-7 balanced
1C - 1D - 1S - 2C
4-7, 5C
1C - 1D - 1S - 2D
4-7, 5D
1C - 1D - 1S - 2H
4-7, 5H
1C - 1D - 1S - 2S
4-7 raise
1C - 1D - 1S - 2NT
4-7, 5/5 minors
After 1C-1D-1S there is one 2-suited response
1C - 1D - 1S - 3C
S support and fair 6-card suit
1C - 1D - 1S - 3D
S support and fair 6-card suit
1C - 1D - 1S - 3H
S support and fair 6-card suit
1C - 1D - 1NT - 2C
0-3
1C - 1D - 1NT - 2D
!!! 4-7 denies 5-card major
not necessarily showing D or denying C support
1C - 1D - 1NT - 2H
4-7, 5H
1C - 1D - 1NT - 2S
4-7, 5S
1C - 1D - 1NT - 3C
!!! 4-7, showing 5D (!)
To show C, bid 2D (non-descriptive) followed by C support
1C - 1D - 1NT - 3D
4-7, C support and fair 6-card suit
1C - 1D - 1NT - 3H
4-7, C support and fair 6-card suit
1C - 1D - 1NT - 3S
4-7, C support and fair 6-card suit
1C - 1D - 1NT - 2NT
4-7, 5S/4H
After 1C-1D-1NT there is one 2-suited response
1C - 1D - 2C - 2D
0-3
1C - 1D - 2C - 2H
4-7, 4+H
1C - 1D - 2C - 2S
4-7, 4+S
1C - 1D - 2C - 2NT
4-7, 5S/4H
After 1C-1D-2C there is one 2-suited response
1C - 1D - 2C - 3C
5-7, 5-card suit
1C - 1D - 2C - 3D
4-7 D support.
Denies 4-card major or 5C
1C - 1D - 2C - 3H
4-7, D support and fair 6-card suit
1C - 1D - 2C - 3S
4-7, D support and fair 6-card suit
1C - 1D - 2D - 2H
0-4
1C - 1D - 2D - 2S
0-4
1C - 1D - 2D - 2NT
5-7 no fit
1C - 1D - 2D - 3C
5-7, C suit
1C - 1D - 2D - 3D
5-7, D suit
1C - 2NT - 3C
Asks
1C - 2NT - 3C - 3D
Step 1 - C & H
ascending order of minors then majors
1C - 2NT - 3C - 3H
Step 2 - C & S
ascending order of minors then majors
1C - 2NT - 3C - 3S
Step 3 - D & H
ascending order of minors then majors
1C - 2NT - 3C - 3NT
Step 4 - D & S
ascending order of minors then majors
1C - 1H - 1S - 1NT
C suit
1C - 1H - 1S - 2C
D suit
1C - 1H - 1S - 2D
H suit
1C - 1H - 1S - 2H
S suit
1C - 1H - 1S - 2S
Minors 5/4 (3/1 majors)
8-10 (with 11+ bid 2S over 1C)
1C - 1H - 1S - 2NT
Minors 5/5
1C - 1H - 1S - 3C
6D 4 in other suit (3D will ask)
1C - 1H - 1S - 3D
6C 4H
1C - 1H - 1S - 3H
6C 4S
1C - 1H - 1S - 3S
6C 4D
1C - 1H - 1S - 3C - 3D
Asking for 4-card suit
1C - 1H - 1S - 3C - 3D - 3H
6D 4S
1C - 1H - 1S - 3C - 3D - 3S
6D 4C
1C - 1H - 1S - 3C - 3D - 3NT
6D 4H
1C - 1H - 1NT
5C and 5 major
1C - 1D - 1H - 1S - 1NT - 2S
5-7 Both minors 5/4, upper range
1C - 1D - 1H - 1NT - 2C
C suit, 4+-cards
nb P’s 1NT denied 3H
1C - 1D - 1H - 1NT - 2D
D suit, 4+-cards
nb P’s 1NT denied 3H
1C - 2C - 2D
asks which minor, or suits
1C - 2C - 2D - 2H
C suit
1C - 2C - 2D - 2S
D suit
1C - 2C - 2D - 2NT
5C/5D
After 1C - 2C can show 5/5 (minors) or 6 minor/4other
With 11+ 5/4 minors bid 1C-2S (5431) or 8+ 1S-1NT (5440)
1C - 2C - 2D - 3C
6D/4 other
1C - 2C - 2D - 3C - 3D
asks which other
1C - 2C - 2D - 3C - 3D - 3H
6D/4S
Use 3C to show 6D and 3D relays to responses to show 4-card suit
Bid the suit below the 4-card suit with 3NT = 4H (as next suit up excluding the 6D)
1C - 2C - 2D - 3C - 3D - 3S
6D/4C
Use 3C to show 6D and 3D relays to responses to show 4-card suit
Bid the suit below the 4-card suit with 3NT = 4H (as next suit up excluding the 6D)
1C - 2C - 2D - 3C - 3D - 3NT
6D/4H
Use 3C to show 6D and 3D relays to responses to show 4-card suit
Bid the suit below the 4-card suit with 3NT = 4H (as next suit up excluding the 6D)
1C - 2C - 2D - 3D
6C/4H
Bid the suit below the 4-card suit with 3S=4D (as next up excluding the 6C)
With 6D instead of 6C, bid 3C first - relays to 3D - and back to the same sequence but with 6D
1C - 1S - 1NT
Asking points and shape
1C - 1S - 1NT - 2C
Step 1 : 8-9, 4432 (or 14-15)
1C - 1S - 1NT- 2D
Step 2 : 10-11 4432 (or 16-17)
1C - 1S - 1NT - 2H
Step 3 : 12-13 4432 (or 18-19)
1C - 1S - 1NT - 2S
Step 4 : 8-9 4333 (or 16-17)
1C - 1S - 1NT - 2NT
Step 5 : 10-11 4333 (or 18+)
1C - 1S - 1NT - 3C
Step 6 : 12-13 4333
1C - 1S - 1NT - 3D
Step 7: 14-15 4333 with 4H
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 3H
Step 8 : 14-15 4333 with 4S
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 3S
Step 9 : 14-15 4333 with 4C
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 3NT
Step 10 : 14-15 4333 with 4D
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 2C - 2D
asking for hand type
1C - 1S - 1NT - 2C - 2D - 2H
Step 1: SHDC, SHCD, SDHC, SDCH or first three 14-15
1st step are all SH or SD 4/4
1C - 1S - 1NT - 2C - 2D - 2S
Step 2 : SCHD, SCDH, HDSC or 14-15 SDCH,SCHD,SCDH
2nd step are SC breaking into HD (but still all S at higher point count)
1C - 1S - 1NT - 2C - 2D - 2NT
Step 3 : HDCS,HCSD or 14-15 HDSC,HDCS,HCSD
3rd step HD or HC combinations
1C - 1S - 1NT - 2C - 2D - 3C
Step 4: HCDS 8-9 only
last combo before minors 4/4
1C - 1S - 1NT - 2C - 2D - 3D
Step 5 : DCSH 8-9 only
minors 4/4
1C - 1S - 1NT - 2C - 2D - 3H
Step 6 : DCHS 8-9 only
minors 4/4
1C - 1S - 1NT - 2C - 2D - 2H - 2S
Asking for more precision
1C - 1S - 1NT - 2C - 2D - 2H - 2S - 2NT
Step 1 : 8-9 SH-DC
1C - 1S - 1NT - 2C - 2D - 2H - 2S - 3C
Step 2 : 8-9 SH-CD
1C - 1S - 1NT - 2C - 2D - 2H - 2S - 3D
Step 3 : 8-9 SD-HC
1C - 1S - 1NT - 2C - 2D - 2H - 2S -3H
Step 4 : 8-9 SD-CH
1C - 1S - 1NT - 2C - 2D - 2H - 2S - 3S
Step 5 : 14-15 SH-DC
1C - 1S - 1NT - 2C - 2D - 2H - 2S - 3NT
Step 6 : 14-15 SH-CD
1C - 1S - 1NT - 2C - 2D - 2H - 2S - 4C
Step 7 : 14-15 SD-HC
1C - 1S - 1NT - 2S - 3C - 3D
8-9 4H ie 3433
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 2S - 3C - 3H
8-9 4S ie 4333
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 2S - 3C - 3S
8-9 4C ie 3334
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 2S - 3C - 3NT
8-9 4D ie 3343
The bid is below the 4-card suit (with 3NT for D)
1C - 1S - 1NT - 2S - 3C - 4C
16-17 4D ie 3343
The bid is below the 4-card suit
1C - 1S - 1NT - 2S - 3C - 4D
16-17 4H ie 3433
The bid is below the 4-card suit
1C - 1S - 1NT - 2S - 3C - 4H
16-17 4S ie 4333
The bid is below the 4-card suit
1C - 1S - 1NT - 2S - 3C - 4S
16-17 4C ie 3334
The bid is below the 4-card suit
1C - 1S - 2D
D suit
1C - 1S - 2H
H suit
1C - 1S - 2S
S suit
1C - 2C - 2D - 3H
6C 4S
Bid the suit below the 4-card suit 3S=4D (as next up excluding the 6C
With 6D instead of 6C, bid 3C first - relays to 3D - and back to the same sequence but with 6D
1C - 2C - 2D - 3S
6C 4D
Bid the suit below the 4-card suit 3S=4D (as next up excluding the 6C
With 6D instead of 6C, bid 3C first - relays to 3D - and back to the same sequence but with 6D
1C - 1NT - 2C
Inquiry
1C - 1NT - 2C - 2D
Weak 2 in H
submarine
1C - 1NT - 2C - 2H
Weak 2 in S
submarine
1C - 1NT - 2C - 2S
8+ 5440 with 5 in a minor
1C - 1NT - 2C - 2NT
8+ 4441
1C - 1NT - 2C - 3C
8+ 5440 with 5 in a major and void C
With 5 in a major, bid the void
1C - 1NT - 2C - 2S - 2NT
Inquiry for void
1C - 1NT - 2C - 2S - 2NT - 3C
8+ 5440 with 5 in a minor and void in C
1C - 1NT - 2C - 2S - 2NT - 3D
8+ 5440 with 5 in a minor and void in D
1C - 1NT - 2C - 2S - 2NT - 3H
8+ 5440 with 5 in a minor and void in H
1C - 1NT - 2C - 2S - 2NT - 3S
8+ 5440 with 5 in a minor and void in S
1C - 1NT - 2C - 3D
8+ 5440 with 5 in a major and void D
With 5 in a major, bid the void
1C - 1NT - 2C - 3H
8+ 5440 with 5 in a major and void H
With 5 in a major, bid the void
1C - 1NT - 2C - 3S
8+ 5440 with 5 in a major and void S
With 5 in a major, bid the void
1C - 1NT - 2C - 2NT - 3C
Inquiry for singleton
1C - 1NT - 2C - 2NT - 3C - 3D
4441, Singleton D
Bid the singleton (3NT with single C)
1C - 1NT - 2C - 2NT - 3C - 3H
4441, Singleton H
Bid the singleton (3NT with single C)
1C - 1NT - 2C - 2NT - 3C - 3S
4441, Singleton S
Bid the singleton (3NT with single C)
1C - 1NT - 2C - 2NT - 3C - 3NT
4441, Singleton C
Bid the singleton (3NT with single C)
1C - 1NT - 2C - 3C - 3D
Inquiry for 5-card major
1C - 1NT - 2C - 3C - 3D - 3H
5440 void C and 5S
Bid the major not held
1C - 1NT - 2C - 3C - 3D - 3S
5440 void C and 5H
Bid the major not held
1C - 1NT - 2C - 3D - 3H
Inquiry for 5-card major
1C - 1NT - 2C - 3D - 3H - 3S
5440 void D and 5H
Bid the major not held (3NT for S)
1C - 1NT - 2C - 3D - 3H - 3NT
5440 void D and 5S
Bid the major not held (3NT for S)
1C - 1S - 1NT - 2S - 2NT
Flat 16, pass with 8, show 4-card suit (BB4) with 9+
1C - 1S - 1NT - 2S - 3C
Asking for 4-card suit, more than flat 16
1C - 2C - 2D - 3NT
6/5 minors 1S 1H
The 6C/4other top out at 3S, so 3NT is 6511
1C - 2C - 2D - 4C
6/5 minors void H
2056 mirror opposite C/D mirror H/S so C is void H and D is void S, equivalent to bidding the void
1C - 2C - 2D - 4D
6/5 minors void S
0256 mirror opposite C/D mirror H/S so C is void H and D is void S, equivalent to bidding the void
1C - 2C - 2D - 4H
6/6 minors void H
Bid the void
1C - 2C - 2D - 4S
6/6 minors void S
Bid the void
1C - 2C - 2H
H suit
1C - 2C - 2S
S suit
1C - 2C - 2NT
5C and 5-card major
1C - 2NT - 3C
Asks for minor and major
1C - 2NT - 3C - 3D
C and H
1C - 2NT - 3C - 3H
C and S
1C - 2NT - 3C - 3S
D and H
1C - 2NT - 3C - 3NT
D and S
1C - 2S - 2NT
asks for 5-card suit and 3 card major
1C - 2S - 2NT - 3C
5C and 3S ie 3145
1C - 2S - 2NT - 3D
5C and 3H ie 1345
1C - 2S - 2NT - 3H
5D and 3S ie 3154
1C - 2S - 2NT - 3S
5D and 3H ie 1354
1C - 2NT - 3C
asks for 5-card suits
1C - 2NT - 3C - 3S - 4C
transfer to 4D for major suit sign off
1C - 2NT - 3C - 3NT - 4C
transfer to 4D for major suit sign off
1C - 3C
4-7, 7 D to 2 top honours
1C - 3D
4-7, 7 H to 2 top honours
1C - 3H
4-7, 7 S to 2 top honours
1C - 3S
4-7, 7 C to 2 top honours
1C - 1S - 1NT - 2C - 2D - 3S
Step 7 : HCDS and 14-15
1C - 1S - 1NT - 2C - 2D - 3NT
Step 8 :DCSH and 14-15
1C - 1S - 1NT - 2C - 2D - 4C
Step 9 : DCHS and 14-15
1C - 1S - 1NT - 2D - 2H
Asking shape
1C - 1S - 1NT - 2D - 2H - 2S
Step 1: SHDC, SHCD, SDHC, SDCH 10-11 or first three 16-17
1st step are all SH or SD 4/4
1C - 1S - 1NT - 2D - 2H - 2NT
Step 2 : SCHD, SCDH, HDSC 10-11 or 16-17 SDCH,SCHD,SCDH
2nd step are SC breaking into HD (but still all S at higher point count)
1C - 1S - 1NT - 2D - 2H - 3C
Step 3 : HDCS,HCSD 10-11 or 16-17 HDSC,HDCS,HCSD
3rd step HD or HC combinations
1C - 1S - 1NT - 2D - 2H - 3D
Step 4: HCDS 10-11 only
last combo before minors 4/4
1C - 1S - 1NT - 2D - 2H - 3H
Step 5 : DCSH 10-11 only
minors 4/4
1C - 1S - 1NT - 2D - 2H - 3S
Step 6 : DCHS 10-11 only
minors 4/4
1C - 1S - 1NT - 2D - 2H - 3NT
Step 7 : HCDS and 16-17
1C - 1S - 1NT - 2D - 2H - 4C
Step 8 :DCSH and 16-17
1C - 1S - 1NT - 2D - 2H - 4D
Step 9 : DCHS and 16-17
1C - 1S - 1NT - 2H - 2S
Asking shape
1C - 1S - 1NT - 2H - 2S - 2NT
Step 1: SHDC, SHCD, SDHC, SDCH 12-13 or first three 18+
1st step are all SH or SD 4/4
1C - 1S - 1NT - 2H - 2S - 3C
Step 2 : SCHD, SCDH, HDSC 12-13 or 18+ SDCH,SCHD,SCDH
2nd step are SC breaking into HD (but still all S at higher point count)
1C - 1S - 1NT - 2H - 2S - 3D
Step 3 : HDCS,HCSD 12-13 or 18+ HDSC,HDCS,HCSD
3rd step HD or HC combinations
1C - 1S - 1NT - 2H - 2S - 3H
Step 4: HCDS 12-13 only
last combo before minors 4/4
1C - 1S - 1NT - 2H - 2S - 3S
Step 5 : DCSH 12-13 only
minors 4/4
1C - 1S - 1NT - 2H - 2S - 3NT
Step 6 : DCHS 12-13 only
minors 4/4
1C - 1S - 1NT - 2H - 2S - 4C
Step 7 : HCDS and 18+
1C - 1S - 1NT - 2H - 2S - 4D
Step 8 :DCSH and 18+
1C - 1S - 1NT - 2H - 2S - 4H
Step 9 : DCHS and 18+
1C - 1S - 1NT - 2S - 2NT - 3C
9 points 4D ie 3343 (pass with 8 opposite flat 16)
1C - 1S - 1NT - 2S - 2NT - 3D
9 points 4H ie 3433 (pass with 8 opposite flat 16)
1C - 1S - 1NT - 2S - 2NT - 3H
9 points 4S ie 4333 (pass with 8 opposite flat 16)
1C - 1S - 1NT - 2S - 2NT - 3S
9 points 4C ie 3334 (pass with 8 opposite flat 16)
1C - 1S - 1NT - 2S - 2NT - 3NT
16-17 4C ie 3334
1C - 1S - 1NT - 2S - 2NT - 4C
16-17 4D ie 3343
1C - 1S - 1NT - 2S - 2NT - 4D
16-17 4H ie 3433
1C - 1S - 1NT - 2S - 2NT - 4H
16-17 4S ie 4333
1C - 1S - 1NT - 2NT - 3C
Request 4-card suit
1C - 1S - 1NT - 2NT - 3C - 3D
10-11 4333 4H
1C - 1S - 1NT - 2NT - 3C - 3H
10-11 4333 4S
1C - 1S - 1NT - 2NT - 3C - 3S
10-11 4333 4C
1C - 1S - 1NT - 2NT - 3C - 3NT
10-11 4333 4D
1C - 1S - 1NT - 2NT - 3C - 4C
18+ 4333 4D
1C - 1S - 1NT - 2NT - 3C - 4D
18+ 4333 4H
1C - 1S - 1NT - 2NT - 3C - 4H
18+ 4333 4S
1C - 1S - 1NT - 2NT - 3C - 4S
18+ 4333 4C
1C - 1S - 1NT - 3C - 3D
Request 4-card suit
1C - 1S - 1NT - 3C - 3D - 3H
12-13 4333 4S
1C - 1S - 1NT - 3C - 3D - 3S
12-13 4333 4C
1C - 1S - 1NT - 3C - 3D - 3NT
12-13 4333 4H
1C - 1S - 1NT - 3C - 3D - 4C
12-13 4333 4D
1C - 1D - 1H - 1S - 2S
5H 4S, forcing
Use 1C - 1D - 2D for 5H 4S non-forcing
1C - 1D - 2H - 2S
Step 1 : 1 card Singleton S (or void)
1C - 1D - 2H - 2NT
Step 2 : 2 cards (or singleton honour)
1C - 1D - 2H - 3C
Step 3 : 3 cards (or doubleton honour)
1C - 1D - 2H - 3D
Step 4 : 4 cards (or three to an honour)
1C - 1D - 2H - 3H
Step 5 : better than step 4
1C - 1D - 2S - 2NT
Step 1 : 1 card Singleton H (or void)
1C - 1D - 2S - 3C
Step 2 : 2 cards (or singleton honour)
1C - 1D - 2S - 3D
Step 3 : 3 cards (or doubleton honour)
1C - 1D - 2S - 3H
Step 4 : 4 cards (or three to an honour)
1C - 1D - 2S - 3S
Step 5 : better than step 4
1C - 1D - 1H - 3C
H support + 6 card suit (C)
1C - 1D - 1H - 3D
H support + 6 card suit (D)
1C - 1D - 1H - 3S
H support + 6 card suit (S)