A.5. One NT Opening
Balanced or semi-balanced No 5c Major 13-15 HCP
A.5.1. Responses:
2 ♣
|
Non forcing Stayman
|
2 ♦/♥
|
Transfer ♥/♠
|
2 ♠/NT
|
Transfer ♣/♦
|
3 ♣/♦
|
5+c♣ & 5+c♦
- Weak/GF
|
3 ♥/♠
|
Singleton ♥/♠ 3c♠/♥ & 5c-4c both minors - GF
|
3 NT
|
To play
|
4 ♣
|
4 aces asking - Gerber (A.1.5). Step responses
Responder’s 5
♣ any time bid: 4 Kings
asking
Step responses again
|
4 ♦/♥
|
Texas transfer ♥/♠
|
4 ♠
|
Slam invitational with 4c♣
& 4c♦
|
4 NT
|
Slam invitational with 3c-3c-3c-4c
Min Pass. Max 4 aces step responses
|
5 NT
|
7 NT invitational. Min 6 NT. Max 7 NT
|
1 NT - 2 ♣ Continuation Non
forcing Stayman
2 ♦
|
Denies 4c Major
|
2 ♥
|
4c♥ - maybe 4c♠
|
2 ♠
|
4c♠ - denies 4c♥
|
1
NT - 2 ♣ - 2 ♦
Continuation Denies 4c♥/♠
Pass
|
4+c♦
& 4c♥ & 4c♠ –
Drop dead Stayman
|
2 ♥/♠
|
4+c♥ & 4+c♠
- Crawling Stayman. Pass/Correction
|
2 NT
|
Game invitational - No promising 4c Major 9-11 HCP
|
3 ♣/♦
|
4cMajor & 5+c♣/♦ - Slam try
|
3 ♥
|
4+c♥ & 5+c♠
Smolen GF
|
3 ♠
|
4c♠
& 5c♥ Smolen GF. Opener bids 3 NT or 4 ♥
|
3 NT
|
To play
|
4 ♦/♥
|
Late transfer ♥/♠
|
1 NT - 2 ♣ - 2 ♦ - 3 ♣/♦ Continuation 4c Major & 5+c♣/♦ Slam try
3 NT
|
To play
|
4 ♣/♦
|
Max
|
5 ♣/♦
|
Min
|
1 NT - 2 ♣ - 2 ♦
- 3 ♥ Continuation Smolen 4c+♥ & 5+c♠ GF
3 ♠
|
3c♥ - (conventional bid)
|
3 NT
|
Denies 3c Major
|
4 ♠
|
3c♠ -
To play
|
1 NT - 2 ♣ - 2 ♦ - 3 ♥ - 3 ♠ Continuation 3c♥
3 NT
|
To play
|
4 ♦/♥
|
Transfer ♥/♠
|
1 NT - 2 ♣ - 2 ♦
- 3 ♥ - 3 NT Continuation Denies 3c Major
Pass
|
No interest
|
4 ♦/♥
|
Late transfer ♥/♠
|
1 NT - 2 ♣ - 2 ♦
- 3 ♠ Continuation Smolen 5+c♥ & 4c♠ GF
3 NT
|
To play. Responder passes or with 6c♥ bids 4 ♦ transfer ♥
|
4 ♥
|
3c♥ -
To play
|
1 NT - 2 ♣ - 2 ♥ Continuation 4c♥ Maybe 4c♠
Pass
|
No interest
|
2 ♠
|
4c♠ denies 4c♥ Game invitational
|
2 NT
|
3 NT invitational - Denies 4c Major
|
3 ♣/♦
|
4c♠ & 5+c♣/♦ - Slam try
Replies as 1
NT – 2 ♣ - 2 ♦ - 3 ♣/♦
|
3 ♥
|
Game ♥ invitational
|
3 ♠
|
4+c♥ - Splinter ♠
|
3 NT
|
To play
|
4 ♦
|
4+c♥ - Splinter ♦
|
4 ♥
|
To play
|
4 NT
|
5 aces ♥ Trump asking (A.1.3)
|
1 NT - 2 ♣ - 2 ♥ - 2 ♠ Continuation 4c♠ Denies 4c♥
Pass
|
No interest
|
2/3 NT
|
Min/max – To play
|
4 ♠
|
Max – To play
|
1 NT - 2 ♣ - 2 ♥
- 3 ♠
Continuation 4+c♥
Splinter ♠
3 NT
|
Asking bid. Responder min bids 4 ♦
or 4 NT - 5 aces ♥ trump asking (A.1.3)
|
4 ♥
|
Min - To play
|
4 NT
|
5 aces ♥ Trump asking (A.1.3)
|
1 NT - 2 ♣ - 2 ♥ - 4 ♦ Continuation 4+c♥ Splinter ♦
4 ♥
|
Min - To play
|
4 NT
|
5 aces ♥ Trump asking (A.1.3)
|
1 NT - 2 ♣ - 2 ♠ Continuation 4c♠ Denies 4c♥
Pass
|
No interest
|
2 NT
|
Game invitational - No promising 4c Major
|
3 ♣/♦
|
4c♥ & 5+c♣/♦ - Slam try
Replies as 1
NT - 2 ♣ - 2 ♦ - 3 ♣/♦
|
3 ♥
|
4+c♠
- Splinter ♥
|
3 ♠
|
Game ♠ invitational
|
3 NT
|
To play
|
4 ♦
|
4+c♠
- Splinter ♦
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠ trump
asking (A.1.3)
|
1 NT - 2 ♣ - 2 ♠ - 3 ♥ Continuation 4+c♠ Splinter ♥
3 ♠
|
Asking bid. Responder min bids 3 NT or
4 NT
- 5 aces ♠ Trump asking bid (A.1.3)
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠ Trump asking (A.1.3)
|
1 NT - 2 ♣ - 2 ♠ - 4 ♣
Continuation 4+c♠
Splinter ♣
4
♦
|
Asking bid. Responder min bids 4 ♥ or
4 NT 5 aces ♠ Trump asking bid (A.1.3)
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠ Trump asking (A.1.3)
|
1 NT - 2 ♣ - 2 ♠ - 4 ♦
Continuation 4+c♠
Splinter ♦
4 ♥
|
Min/max asking. Responder min bids 4 ♠ or
4 NT 5 aces ♠ Trump asking bid (A.1.3)
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠ Trump asking (A.1.3)
|
1 NT - 2 ♦ Continuation Transfer ♥
2 ♥
|
Accept transfer min
|
2 ♠/NT / 3 ♣
|
Accept transfer max 4c♥ & 2c♠/♦/♣
Responder 3 ♦ Retransfer
|
3 ♥
|
Accept transfer max 4c♥ Probably 4c-3c-3c-3c
|
1 NT – 2 ♦ - 2 ♥ Continuation Accept Transfer
Pass
|
No interest
|
2 ♠
|
5c♥ & 4+c♠ Game invitational
|
2/3 NT
|
5c♥ Game invitational/GF
|
3 ♣ /♦
|
5+c♥ & 4+c♣/♦ Slam try
|
3 ♥
|
6+c♥ Slam try
|
3
♠
|
5+c♥ Splinter ♠
|
4 ♣ /♦
|
5+c♥ Splinter ♣ /♦
|
4 ♥
|
To play
|
4 NT
|
5 aces ♥ trump asking (A.1.3)
|
1 NT – 2 ♦ - 2
♠/NT /
3 ♣ - 3 ♦ - 3 ♥
Continuation Accept
retransfer
Pass
|
No interest
|
Any
|
Cue Bid Slam try
|
3 NT
|
Top honor (Ace or King) in 2c asking bid.
Opener Cue Bid with top honor or 4 ♥ without
|
4 ♥
|
To play
|
1 NT – 2 ♦ - 3 ♥ Continuation Accept transfer max.
Probably 4-3-3-3
Pass
|
No interest
|
Any
|
Cue Bid – Slam try
|
4 ♥
|
To play
|
4 NT
|
5 aces ♥ trump asking (A.1.3)
|
1 NT - 2 ♥ Continuation Transfer ♠
2 ♠
|
Accept transfer
|
2 NT /
3 ♣/♦
|
Accept transfer max 4c♠ & 2c♥/♣/♦
Responder 3 ♥ Retransfer
|
3 ♠
|
Accept transfer max 4c♠ - Probably 4-3-3-3
|
1 NT - 2 ♥ - 2 ♠ Continuation Accept transfer
Pass
|
No interest
|
2 NT
|
5c♠
- Game invitational
|
3 ♣/♦/♥
|
5c♠
& 4+c♣/♦/♥ – Slam try
|
3 ♠
|
6+c♠
- Slam try
|
3 NT
|
5c♠
- GF
|
4 ♣/♦/♥
|
5+c♠
- Splinter ♣/♦/♥
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠
trump asking (A.1.3)
|
1 NT – 2 ♥ - 2 NT/ 3 ♣/♦ - 3 ♥ - 3 ♠ Continuation Accept retransfer
Pass
|
No interest
|
3 NT
|
Top honor (Ace or King) in 2c asking bid.
Opener Cue Bid with top honor or 4 ♠
without
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠
trump asking (A.1.3)
|
1 NT – 2 ♥ - 3 ♠ Continuation Accept Transfer max.
Probably 4-3-3-3
Pass
|
No interest
|
4 ♣/♦/♥
|
Cue Bid - Slam try
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠
trump asking (A.1.3)
|
1 NT - 2 ♠ Continuation Transfer ♣
2 NT / 3 ♣
|
Accept transfer max/min
|
1 NT - 2 NT Continuation Transfer ♦
3 ♣/♦
|
Accept transfer max/min
|
1 NT - 3 ♦
Continuation 5+c♣ & 5+c♦ GF
3
♥
|
A♥ & both minor tolerance
|
3
♠
|
A♠ (denies
♥) & both minor tolerance
|
3 NT
|
To play
|
4 ♣/♦
|
5 aces ♣/♦ trump asking (A.1.1)
|
5 ♣/♦
|
To play
|
1 NT - 3 ♦ - 3 ♥ Continuation A♥ & both minor tolerance
3
♠
|
♠ Exclusion aces ♣ trump asking (A.1.4)
|
3 NT
|
♠ Exclusion aces ♦ trump asking (A.1.4)
|
4 ♣/♦
|
5 aces ♣/♦ trump asking (A.1.1)
|
5 ♣/♦
|
To play
|
1 NT - 3 ♦ - 3 ♠ Continuation A♠ & both minor
tolerance
3 NT
|
To play
|
4 ♣/♦
|
5 aces ♣/♦ trump asking (A.1.1)
|
5 ♣/♦
|
To play
|
1 NT - 3 ♥ Continuation Singleton ♥, 3c♠ & 5c-4c both minors GF
3
♥
|
5c minor asking
|
3 NT
|
To play
|
4 ♣/♦
|
5 aces ♣/♦ trump asking (A.1.1)
|
4 ♠
|
To play
|
4 NT
|
5 aces ♠
trump asking (A.1.3)
|
5 ♣/♦
|
To play
|
1 NT - 3 ♠ Continuation Singleton ♠, 3c♥ & 5c-4c both minors GF
3 NT
|
To play
|
4 ♣/♦
|
5 aces ♣/♦ trump asking (A.1.1)
|
4 ♥ / 5 ♣/♦
|
To play
|
4 ♠
|
5c minor asking bid
|
4 NT
|
5 aces ♥ trump asking (A.1.3)
|
1 NT - 4 ♠ continuation Invitational slam with 4c♣ & 4c♦
4 NT
|
No 4c minor min
|
5 ♣
|
4+c♣/♦ & 5 aces ♣/♦ trump
asking
14-30 step
responses
|
6 NT
|
No 4c minor max
|
Any time 4 NT 5 aces asking
bid (A.1.3)
Responses RKCB 14-30
& PODI/PORI.
A.5.2.1. 2nd
level Interference continuation Rubinsohl
· DBL - Penalty.
· Cue Bid - Stopper promising Stayman - GF.
· 2 any - To play.
· 2 NT - Transfer ♣. Opener bids 3 ♣.
o
Lower interference new suit - To
play.
o
Cue Bid - Stayman denies stopper.
o
Higher interference’s new suit - GF.
· 3 ♣/♦/♥ - Transfer ♦/♥/♠.
· 3 ♠ - Transfer 3 NT non-promising stopper.
· 3 NT - To play promising stopper.
· 4 ♣ - 4 aces asking Gerber
(A.1.5). Step responses.
· 4 ♦/♥ - Transfer ♥/♠.
A.5.2.2. 3rd
level Interference continuation
· DBL - Penalty.
· Cue Bid - Stopper promising Stayman - GF.
· Any - To play.
· 4 ♣ - 4 aces asking Gerber
(A.1.5). Step responses.
· 4 ♦/♥ - Transfer ♥/♠.
A.5.2.3. 4th
level Interference continuation
· DBL:
A. After ♣/♦/♥ - Take out.
B. After ♠ - Penalty.
· 4 NT:
A. After ♣/♦/♥ - To play promising stopper.
B. After ♠ - Take out.
· 5 NT - Slam invitational.
A.5.3. Double
continuation
Direct double - Exit transfer:
· Pass - Transfer RDBL. Opener RDBL.
o
Pass - 9+ HCP.
o
New suit - 0-8 HCP.
Opener
passes with 3+c or bids next step suit.
Responder passes with 4c or bids next 4c suit & opener pass.
· RDBL - Transfer ♣.
· 2 ♣/♦/♥ - Transfer ♦/♥/♠.
· 2 ♠ - 5c♥
& 5♠.
· 2 NT - 5c♣ & 5c♦.
Ignoring any Double after transfer.
A.5.4. Stayman
Double continuation
· Pass - 4c♣
No 4c Major.
· RDBL - 5+c♣
No 4c Major.
· 2 ♦ - No 4c♣
No 4c Major.
· 2 ♥ -
4c♥.
· 2 ♠ - 4c♠.