Difference between revisions of "User:Brian/Bridge/Rebids after a 1NT opening"

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(Created page with "See Responding to a 1NT opening for an explanation of the Stayman convention and Jacoby transfers. ==Without interference==...")
 
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==Without interference==
 
==Without interference==
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===Stayman sequences===
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{|class="wikitable"
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If partner responded 2♣, it is Stayman, asking for a 4-card major.
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|+ Meanings of partner's responses
 +
! The following response to 1NT... !! means...
 +
|-
 +
| 2♣  
 +
| The Stayman convention, showing invitational or greater strength and asking for a 4 card major. To respond, see the table below.
 +
|-
 +
| 2♦
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| A Jacoby transfer, showing 5+ hearts and asking you to bid hearts so you become declarer. Announce "transfer", then respond according to the table below.
 +
|-
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| 2♥
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| A Jacoby transfer, showing 5+ spades and asking you to bid spades so you become declarer. Announce "transfer", then respond according to the table below.
 +
|-
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| 2NT or a higher notrump
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| A [[User:Brian/Bridge/Quantitative notrump raises|quantitative raise]]; respond accordingly or pass.
 +
|-
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| 4♣
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| [[User:Brian/Bridge/Responding to Gerber|Gerber]], asking for aces.
 +
|-
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| 4♦
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| 6+ hearts and game-forcing strength, asking you to bid hearts so you become declarer. Announce "transfer", then bid 4♥.
 +
* Most of the time, partner will pass.
 +
* If partner bids again, it is a slam try: either a [[User:Brian/Bridge/Control bidding|control bid]] or [[User:Brian/Bridge/Responding to Blackwood|Blackwood]].
 +
|-
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| 4♥
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| Like 4♦, but a transfer to spades instead.
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|}
  
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I have 4+ hearts → Bid 2♥.
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{|class="wikitable"
 +
|+ Responses to Stayman
 +
! If... !! then...
 +
|-
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| I have 4+ hearts
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| Bid 2♥.
 
* If partner responds 2♠, it means they have 4 spades, 3- hearts, and invitational strength. Sign off in 2NT, 3♠, 3NT, or 4♠, depending on your strength and whether you have 4-card spade support.
 
* If partner responds 2♠, it means they have 4 spades, 3- hearts, and invitational strength. Sign off in 2NT, 3♠, 3NT, or 4♠, depending on your strength and whether you have 4-card spade support.
 
* If partner responds 2NT, it means they have no 4-card major (the Stayman was "fake") but invitational strength. Pass or sign off in 3NT.
 
* If partner responds 2NT, it means they have no 4-card major (the Stayman was "fake") but invitational strength. Pass or sign off in 3NT.
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* If partner responds 4♥, it is a sign-off.
 
* If partner responds 4♥, it is a sign-off.
 
* If partner responds 4NT, 5NT, 6NT, or 7NT, it is [[User:Brian/Bridge/Quantitative notrump raises|quantitative]] and shows 4 spades. Pass or make a sign-off either in notrump or spades.
 
* If partner responds 4NT, 5NT, 6NT, or 7NT, it is [[User:Brian/Bridge/Quantitative notrump raises|quantitative]] and shows 4 spades. Pass or make a sign-off either in notrump or spades.
−
 
+
|-
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I have 4+ spades → Bid 2♠.
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| I have 4+ spades
 +
| Bid 2♠.
 
* If partner responds 2NT, they show invitational strength without 4-card spade support. Pass or sign off in 3NT.
 
* If partner responds 2NT, they show invitational strength without 4-card spade support. Pass or sign off in 3NT.
 
* If partner responds 3NT, they show game-forcing strength without 4-card spade support. Pass.
 
* If partner responds 3NT, they show game-forcing strength without 4-card spade support. Pass.
 
* In all other cases, the subsequent bidding is the same as in the previous paragraph, but exchange "spades" and "hearts".
 
* In all other cases, the subsequent bidding is the same as in the previous paragraph, but exchange "spades" and "hearts".
−
 
+
|-
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I have no 4-card major → Bid 2♦.
+
| I have no 4-card major
 +
| Bid 2♦.
 
* If partner responds 2M, they show invitational strength with 5 of the bid major and 4 of the unbid major. Sign off in 2NT, 3M, 3NT, or 4M, depending on your strength and whether you have 3-card support for partner's 5-card major.
 
* If partner responds 2M, they show invitational strength with 5 of the bid major and 4 of the unbid major. Sign off in 2NT, 3M, 3NT, or 4M, depending on your strength and whether you have 3-card support for partner's 5-card major.
 
* If partner responds 2NT, they have invitational strength. Pass or sign off in 3NT.
 
* If partner responds 2NT, they have invitational strength. Pass or sign off in 3NT.
−
* If partner responds 3M, they show game-forcing strength with '''5 of the other major''' (oM) and 4 of the bid major. With 3-card support for oM, raise to 4oM; if partner bids again, it is a [[User:Brian/Bridge/Control bidding|control bid]] or [[User:Brian/Bridge/Responding to Blackwood|Blackwood]]. Otherwise, rebid 3NT; if partner bids again, it is a [[User:Brian/Bridge/Quantitative notrump raises|quantitative raise]].
+
* If partner responds 3M, they show game-forcing strength with '''5 of the other major''' (oM) and 4 of the bid major. Alert partner's bid. With 3-card support for oM, raise to 4oM; if partner bids again, it is a [[User:Brian/Bridge/Control bidding|control bid]] or [[User:Brian/Bridge/Responding to Blackwood|Blackwood]]. Otherwise, rebid 3NT; if partner bids again, it is a [[User:Brian/Bridge/Quantitative notrump raises|quantitative raise]].
 
* If partner responds 3NT, it is a sign-off. Pass.
 
* If partner responds 3NT, it is a sign-off. Pass.
 
* If partner responds 4NT, 5NT, 6NT, or 7NT, it is [[User:Brian/Bridge/Quantitative notrump raises|quantitative]].
 
* If partner responds 4NT, 5NT, 6NT, or 7NT, it is [[User:Brian/Bridge/Quantitative notrump raises|quantitative]].
 +
|}
  
−
===Jacoby transfer sequences===
+
{|class="wikitable"
−
If partner responded 2♦, it shows 5+ hearts. If partner responded 2♥, it shows 5+ spades. In either case, announce "transfer" when partner makes their bid.
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|+ Rebids after a Jacoby transfer
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+
! If... !! then...
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I have 17 HCP with 4+ of the major above → Announce "transfer" then superaccept by bidding 3 of the major. (TODO)
+
|-
−
 
+
| I have 17 HCP with 4+-card support for partner's major
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Otherwise → Announce "transfer" then accept by bidding 2 of the major above. (TODO)
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| Superaccept by bidding 3 of the major.
−
 
+
* If partner responds 4 of the major, it is a sign-off.
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===Other responses===
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* Any other response by partner is a slam try: either a [[User:Brian/Bridge/Control bidding|control bid]] or [[User:Brian/Bridge/Responding to Blackwood|Blackwood]].
−
A notrump response is [[User:Brian/Bridge/Quantitative notrump raises|quantitative raise]]. Most commonly, this will be 2NT or 3NT. 2NT is invitational to 3NT, while 3NT is to play.
+
|-
−
 
+
| Partner's bid was 2♦, showing hearts
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My partner responded 4♣ → See [[User:Brian/Bridge/Responding to Gerber|Responding to Gerber]].
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| Accept by bidding 2♥.
−
 
+
* If partner responds 2♠, they have invitational strength with 5-5 in the majors. Pass with a minimum, sign off in 2NT or 3NT to deny 3-card support for both majors, or support either major if possible by signing off in 3 or 4 of the major you want to support.
−
My partner responded 4♦ or 4♥ → Announce "transfer" then accept the transfer by bidding 4 of the next suit. This is a ''Texas transfer''. (TODO)
+
* If partner responds 3♥, they have invitational strength with 6 hearts. Pass or sign off by raising to 4♥.
 +
* If partner responds with notrump, it is [[User:Brian/Bridge/Quantitative notrump raises|quantitative]] and shows exactly 5 hearts. With 3-card support, sign off in hearts at the appropriate level. Without 3-card support, pass or sign off in notrump at the appropriate level.
 +
:* One common case is that the response is 2NT, showing invitational strength and exactly 5 hearts. Pass or sign off in 3♥, 3NT, or 4♥.
 +
:* Another common case is 3NT, showing game-forcing strength and exactly 5 hearts. Pass or sign off in 4♥.
 +
|-
 +
| Partner's bid was 2♥, showing spades
 +
| Accept by bidding 2♠.
 +
* If partner responds 3♥, they have game-forcing strength with 5-5 in the majors. With 3-card support for either major, raise to 4 of the major; any subsequent bid by partner is either a [[User:Brian/Bridge/Control bidding|control bid]] or [[User:Brian/Bridge/Responding to Blackwood|Blackwood]]. If you can't support either major, rebid 3NT; any subsequent bid by partner is [[User:Brian/Bridge/Quantitative notrump raises|quantitative]].
 +
* For all other responses, see the previous paragraph, but exchange "spades" and "hearts".
 +
|}

Latest revision as of 06:54, 26 June 2017

See Responding to a 1NT opening for an explanation of the Stayman convention and Jacoby transfers.

Without interference[edit]

Meanings of partner's responses
The following response to 1NT... means...
2♣ The Stayman convention, showing invitational or greater strength and asking for a 4 card major. To respond, see the table below.
2♦ A Jacoby transfer, showing 5+ hearts and asking you to bid hearts so you become declarer. Announce "transfer", then respond according to the table below.
2♥ A Jacoby transfer, showing 5+ spades and asking you to bid spades so you become declarer. Announce "transfer", then respond according to the table below.
2NT or a higher notrump A quantitative raise; respond accordingly or pass.
4♣ Gerber, asking for aces.
4♦ 6+ hearts and game-forcing strength, asking you to bid hearts so you become declarer. Announce "transfer", then bid 4♥.
  • Most of the time, partner will pass.
  • If partner bids again, it is a slam try: either a control bid or Blackwood.
4♥ Like 4♦, but a transfer to spades instead.
Responses to Stayman
If... then...
I have 4+ hearts Bid 2♥.
  • If partner responds 2♠, it means they have 4 spades, 3- hearts, and invitational strength. Sign off in 2NT, 3♠, 3NT, or 4♠, depending on your strength and whether you have 4-card spade support.
  • If partner responds 2NT, it means they have no 4-card major (the Stayman was "fake") but invitational strength. Pass or sign off in 3NT.
  • If partner responds 3♥, it means they have 4+ hearts and invitational strength. Pass or sign off by raising to 4♥.
  • If partner responds 3♠, it is a slam try showing agreement in hearts. Alert partner's bid. With a minimum, respond 4♥. If partner bids again, it is a control bid or Blackwood. With a better hand, initiate control bidding or bid 4NT, Blackwood.
  • If partner responds 3NT, it means they have game-forcing strength, 4 spades, and 3- hearts. Pass or sign off in 4&spades.
  • If partner responds 4♥, it is a sign-off.
  • If partner responds 4NT, 5NT, 6NT, or 7NT, it is quantitative and shows 4 spades. Pass or make a sign-off either in notrump or spades.
I have 4+ spades Bid 2♠.
  • If partner responds 2NT, they show invitational strength without 4-card spade support. Pass or sign off in 3NT.
  • If partner responds 3NT, they show game-forcing strength without 4-card spade support. Pass.
  • In all other cases, the subsequent bidding is the same as in the previous paragraph, but exchange "spades" and "hearts".
I have no 4-card major Bid 2♦.
  • If partner responds 2M, they show invitational strength with 5 of the bid major and 4 of the unbid major. Sign off in 2NT, 3M, 3NT, or 4M, depending on your strength and whether you have 3-card support for partner's 5-card major.
  • If partner responds 2NT, they have invitational strength. Pass or sign off in 3NT.
  • If partner responds 3M, they show game-forcing strength with 5 of the other major (oM) and 4 of the bid major. Alert partner's bid. With 3-card support for oM, raise to 4oM; if partner bids again, it is a control bid or Blackwood. Otherwise, rebid 3NT; if partner bids again, it is a quantitative raise.
  • If partner responds 3NT, it is a sign-off. Pass.
  • If partner responds 4NT, 5NT, 6NT, or 7NT, it is quantitative.
Rebids after a Jacoby transfer
If... then...
I have 17 HCP with 4+-card support for partner's major Superaccept by bidding 3 of the major.
  • If partner responds 4 of the major, it is a sign-off.
  • Any other response by partner is a slam try: either a control bid or Blackwood.
Partner's bid was 2♦, showing hearts Accept by bidding 2♥.
  • If partner responds 2♠, they have invitational strength with 5-5 in the majors. Pass with a minimum, sign off in 2NT or 3NT to deny 3-card support for both majors, or support either major if possible by signing off in 3 or 4 of the major you want to support.
  • If partner responds 3♥, they have invitational strength with 6 hearts. Pass or sign off by raising to 4♥.
  • If partner responds with notrump, it is quantitative and shows exactly 5 hearts. With 3-card support, sign off in hearts at the appropriate level. Without 3-card support, pass or sign off in notrump at the appropriate level.
  • One common case is that the response is 2NT, showing invitational strength and exactly 5 hearts. Pass or sign off in 3♥, 3NT, or 4♥.
  • Another common case is 3NT, showing game-forcing strength and exactly 5 hearts. Pass or sign off in 4♥.
Partner's bid was 2♥, showing spades Accept by bidding 2♠.
  • If partner responds 3♥, they have game-forcing strength with 5-5 in the majors. With 3-card support for either major, raise to 4 of the major; any subsequent bid by partner is either a control bid or Blackwood. If you can't support either major, rebid 3NT; any subsequent bid by partner is quantitative.
  • For all other responses, see the previous paragraph, but exchange "spades" and "hearts".
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