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--- 1_plain_suit [2017/03/22 23:41] – johnkinn
+++ 1_plain_suit [2023/08/02 20:21] (current) – john
@@ Line 1: / Line 1: @@
-<html><a name=1plainsuit></a></html>
+====Development after opening 1 Plain Suit====
-====== First Response to 1 Plain suit ======
-**Responses to 1\D**
-^ Response       ^ Description ^
+====First Response to 1 Plain suit====
-| 1\H/1\S/2\C | Natural 5 card suit, forcing |
-| 1NT            | Nondescriptive relay, unlimited and forcing |
-| 2\D/3\D      | NF/GI raises |
-| 2\H/2\S/3\C | GF, 6(+) card one suiter. Suit is not solid, but min. HHxxxx. |
-| 2NT            | GF raise, Hxxxx min. |
-| 3\H/3\S/4\C | splinter raise |
-| 3NT            | no such bid |
-**Responses to 1\H**
+**Responses to 1\d**
-^ Response       ^ Description ^
+^Response^Meaning^
-| 1\S/2\C/2\D | Natural 5 card suit, forcing |
+|1\h/1\s/2\c|natural 5 card suit, forcing|
-| 1NT            | Nondescriptive relay, unlimited and forcing |
+|1N|non-descriptive relay|
-| 2\H/3\H      | NF/GI raises |
+|\d raises|limit|
-| 2\S/3\C/3\D | GF, 6(+) card one suiter. Suit is not solid, but min. HHxxxx. |
+|2\h/2\s/3\c|game force; suit of HHxxxx; not solid|
-| 2NT            | GF raise, Hxxxx min. |
+|2N|game forcing \d raise (\dHxxxx) minimum|
-| 3\S/4\C/4\D | splinter raise |
+|3\h/3\s/4\c|splinter raise (Almost always shows just 4 card support, use 2N with 5+ card support)|
-| 3NT            | minimum balanced \H raise |
+|3N|not defined|
-| 4\H           | unbalanced preemptive raise |
+**Responses to 1\h**
+^Response^Meaning^
+|1\s/2\c/2\d| natural 5 card suit, forcing|
+|1N|non-descriptive relay|
+|\H raises| limit|
+|2\s/3\c/3\d| game force; suit of HHxxxx; not solid|
+|2N|game forcing \H raise (\hHxxxx minimum)|
+|3\s/4\c/4\d| splinter raise (Almost always shows just 4 card support, use 2N with 5+ card support)|
+|3N|minimum balanced \h raise (4 cards)|
+|4\h|unbalanced weak raise|
 **Responses to 1\S**
+^Response^Meaning^
+|1N|non-descriptive relay|
+|2\c/2\d|5 card suit, forcing|
+|2\h|5 card suit, not forcing (constructive 10-ish "points")|
+|\s raises|limit|
+|2N|game forcing \s raise (\sHxxxx minimum)|
+|3\c/3\d|game force; suit of HHxxxx; not solid|
+|3\h|Invitational, good \h suit (HJTxxx minimum strength) |
+|3N|minimum balanced \s raise (4 cards) |
+|4\c/4\d/4\h| splinter raise (Almost always shows just 4 card support, use 2N with 5+ card support)|
+|4\s|unbalanced weak raise|
+====Development after forcing 2 over 1====
+\s - 2\h is discussed [[1 plain suit#1 Spade 2 Hearts|elsewhere]]
+===Opener's first rebid===
+  * Opener's //non-forcing// rebids:
+    * Rebid of opened suit at the 2 level;
+    * Raise of responder's suit to the 3 level (promising 3+ card support)
+    * Bid of a \c Canapé at the 3 level
+  * Opener's //forcing// rebids;
+    * A new suit at the 2 level
+    * A jump shift to the 3 level or to 4\c
+    * A jump raise of responder's suit (only if responder's suit is a minor) with 5+ card support (this is keycard "Gerber
+    * Ä jump rebid of the opened suit showing a very good suit (one loser opposite a singleton)
+    * A jump to 3N showing a strong canapé (only if responder's suit is a minor) in responder's suit
+    * 2N with stoppers in the unbid suits and one of the below:
+      *  A \c canapé
+      * A one suited hand
+The 2N rebid by opener (at his second bid) shows either a 15-16 HCP one suiter or a \c canapé with extra values(if the response was 2\c, then the \c canapé is not possible -- opener has a 15-16 HCP one suiter).  Responder's non-forcing bid is a rebid of his suit; all other non-game bids are forcing to game or the four level.
+In order to determine which hand type opener has, responder can bid 3\c or 3 of opener's major. The 3\c bid implies a Club fit, the 3 major bid implies a 3 card major suit fit.
+After the 3\C bid, opener rebids his major if he has the 15-16 HCP one suiter. Any other rebid by opener shows the \c canapé.
+After the bid of 3 of opener's major by responder, 3N shows the Club Canapé (as would a bid of 4\c).
+===Responder's second bid:===
+  * A preference at the two level back to opener's first bid suit is a non-forcing 3 card preference with a disinclination to bid 2N.
+  * A preference at the three level (with or without a jump) is:
+    * Invitational if opener did not raise responder's suit and did not bid 2N;
+    * Forcing if opener raised responder's suit or bid 2N.  Thus the preference at the game level is weaker than the (forcing) 3 level preference.  This forcing preference can be made on 3 card support because opener has not denied a 5 card holding in his first bid suit.
+  * A single raise of opener's long suit is invitation at the three level, forcing to game at the four level. examples:
+|1\h|2\d||
+|3\c|4\c|game force|
+|-----------------------------------------------------|||
+|1\H|2\c||
+|2\d|3\d|invitational|
+| |4\d|forcing|
+  * A simple rebid of the responder's suit is not forcing
+  * A rebid of 2N is limit
+  * A leap to 4 minor is a slam try (if it is a rebid of the responder's suit, it is always used artificially, not to show a good suit - use an immediate jump shift for that purpose).  It shows one of the following:
+    * Agrees that minor if it is one of //opener's// suits
+    * Otherwise agrees with one of the opener's majors:
+      * If the opener has bid and rebid the same major, the leap to 4\c and 4\d both agree opener's major.  4\c shows a \c control and 4\d shows a \d controls lacking a \c control (remember that control means A, K, singleton or void).
+      * If the opener has bid one major and then the other, the leap to 4\c agrees \hs and the leap to 4\d agrees \ss regardless of the order bid by the opener.
+Examples:
+|1\s|2\c||
+|2\h|4\c|\h fit|
+| |4\d|\s fit|
+-------------------------------------------------------------
+|1\h|2\d||
+|2\h|4\c|\h fit + \c control|
+| |4\d|\h fit + \d control and no \c control|
+If the opener has bid a major and a minor in either order, a leap to 4 of the minor opener did **not** bid agrees opener's major
+Example:
+|1\h|2\c||
+|2\d|4\c|\h raise|
+| |4\d|\d raise (forcing)|
+The principle of double fit applies: that is, the following auction is forcing:
+|1\h|2\c|
+|3\c|3\h|
+The bid of the fourth suit (or a third suit) by the responder at his second call is always natural and:
+  * Non-forcing at the two-level
+  * Forcing (to game) at the three-level
+After the jump rebid by the opener, the responder can:
+  * Rebid his suit (non-forcing)
+  * Bid a new suit (probably an advanced cue bid)
+Example:
+|1\s|2\d||
+|3\s|4\d|non-forcing|
+||4\c|advanced cue bid|
+||4\h|advanced cue bid|
+||3N|not encouraging|
+||4\s|not encouraging|
+<html><a name=S2H></a></html>
+====1 Spade 2 Hearts====
+The 2\h response to 1\s is constructive but non-forcing.
+The auction develops as follows:
+^^^
+|2\s|not encouraging|
+|3\c/3\d| is natural (in the canapé sense) and forcing|
+|3\h|is encouraging|
+|3\s|is very encouraging, but denies 3\hs|
+|2N|is a contract correcting call "forcing" a 3\c rebid by responder|
+|3N|is a strong hand with a \H canapé|
+**After 1\s - 2\h - 2N - 3\c**
+^^^
+|3\d|is final |
+|3\h|is a maximum hand with 2\hs|
+|3\s|6\s and 3\hs, maximum hand (forcing) |
+|3N|Maximum hand with 3\hs (not forcing, but seems unlikely that responder will pass)|
+<html><a name=d2d></a></html>
+====1 Diamond - 2 Diamonds====
+**After 1\d - 2\d**
+The raise shows about 8 to 10 supporting points; this call does invite a rebid of a major (which is forcing one round).
+====After one-over-one response====
-^ Response       ^ Description ^
+**After 1\d - 1\s or 1\d - 1\h or 1\h - 1\s**
-| 1NT            | Nondescriptive relay, unlimited and forcing |
-| 2\C/2\D      | Natural 5 card suit, forcing |
-| 2\H           | Natural 5 card suit, NF(!) |
-| 2\S/3\S      | NF/GI raises |
-| 2NT            | GF raise, Hxxxx min. |
-| 3\C/3\D      | GF, 6(+) card one suiter. Suit is not solid, but min. HHxxxx. |
-| 3\H           | GI, 6(+) suit, min. HJTxxx |
-| 3NT            | minimum balanced \S raise |
-| 4\C/4\D/4\H | splinter raise |
-| 4\S           | unbalanced preemptive raise |
-<html><a name=force2over1></a></html>
+Responder has shown 8+ HCP with a 5+ card suit.  The call is forcing.  Responder promises to bid again unless the opener makes a simple rebid of his own suit.
-====== After forcing 2/1 ======
+Opener's rebids:
+  * A raise of the responder's long suit to the 2 level shows 3 card support and is forcing to the 3-level in that suit.
+  * A jump raise (to the 3-level) shows 5+ card support and is forcing
+  * 3N shows 5+ card support with 5-6 losers.  This is usually a shapely strong hand.
+  * A jump raise (to the 4-level) shows 5 card support and a minimum
+  * A new suit is normal canapé and denies 3-card (or more) support
+  * 1\d - 1\s/1\h - 1N show a 4-card (exactly) \c suit
+  * 1\h - 1\s - 1N shows a 5\h332 or 6 bad \h322 minimum hand (without 3\s).  New suits by responder at the 2 level are not forcing
+  * 2N - shows a one-suited hand (semi-balanced) without 3 card support (15 - 16 HCP)
-The 2 over 1 response always shows a 5(+) card suit and 9(+) HCP. It is forcing unless responder is a passed hand. Opener will next attempt to define his own hand. He will re-bid his opened suit with a 1-suiter, or bid his second suit (which is at least as long as the first) if he has one.
+===Responder's second bid after receiving a raise to the 2 level===
-===== Opener's first rebid =====
+^Opener^Responder^^
+|1\d|1\h||
+|2\h|2\s|Relay|
+|2N||balanced hand|
+|3\c||1-3-5-4 or 1-3-4-5|
+|3\d||5+\ds|
+|3\h||5+ \s (minimum)|
+|3\s||5+ \s (maximum)|
+|**----------------------**|||
+|1\d|1\s||
+|2\s|2N|Relay|
+|3\c||3-1-5-4 or 3-1-4-5|
+|3\d||5+ \ds|
+|3\h||5+\hs|
+|**----------------------**|||
+|1\h|1\s||
+|2\s|2N|Relay|
+|3\c||3-4-1-5|
+|3\d||3-4-5-1|
+|3\h||5+\hs|
-x - 2y - ?:
+If the opener does not show 3+ card support of the responder's suit, then responder's jumps to the 4 level in minors follow the same rules as after forcing 2 over 1.
-^ Rebid                  ^Description ^
+New suits at the 2-level and 3-level follow the rules of forcing 2 over 1 (that is a new suit at the two level is natural and not forcing; at the three level natural and forcing).
-| ** Non-forcing **      ||
-| 2x (rebid of own suit) | One-suited hand, 5.5(+) suit, no extra strength |
-| 3y (simple raise of resp. suit) | 3(+) card support (may have 5(+), e.g. 1\H-2\C-3\C) |
-| 3\C (new suit)        | \C Canapè, no extras |
-| ** Forcing **          ||
-| 2z (new suit)          | Canapè, undefined strength |
-| 3z or 4\C (jump shift)| Canapè, maximum hand, 6(+) suit |
-| 3x (jump rebid)        | Excellent suit (1 loser w/ singleton support), 5-6 losers |
-| 2NT (over 1\H/\S-2\D)| 15-16 HCP, stoppers in unbid suits, and either a one suiter (ususally 5 cards, or a weak 6 card suit), or a \C Canapè. |
-| 2NT (over other)       | 15-16 HCP, stoppers in unbid suits, one suiter (usually 5 or weak 6 card suit) |
-| 3NT                    | Strong Canapè in responder's suit |
-| 4y (jump raise)        | Strong Canapè in responder's suit, keycard Gerber |
-Note: Over 1\H/\S - 2\D - 2NT in order to decide which handtype opener has, responder can bid 3\C with \C fit, or 3\H/\S with major fit. Over 3\C opener rebids 3\H/\S with the one suited hand, all other bid confirms the \C hand. Over responder's 3\H/\S bid opener should bid 3NT with the \C Canapè, all other bids confirm the one-suited hand.
-===== Responder's second bid =====
+A jump rebid is invitational
-==== Raise of second (long) suit ====
-  * At the 3 level : GI, support
+After opener bids 2N (e.g. 1\H - 1\S - 2N) a preference is nonforcing
-      * E.g.: 1\S-2\C / 2\H-3\H
-  * At the 4 level (w/ or w/o jump): GF (stronger than raise to game in minor)
-      * E.g.: 1\S-2\D / 3\C-4\C, or 1\H-2\C / 2\D-4\D
-==== Preference to first suit ====
+^  Opener ^ Responder  ^^
+|1\H | 1\s  ||
+|2\D |? ||
+| | 2\H |simple preference (3 card support)|
+| | 2\s |sign off|
+| | 2N |natural non-forcing|
+| | 3\C|natural forcing (new suit 3 level) |
+| | 3\D |invitational |
+| | 3\H|invitational (4+ card support)  |
+| | 3\s|natural invitation  |
+| | 3N |sign off |
+| | 4\C |artificial slam try with 4+ card Heart fit  |
+| | 4\D |natural slam try  |
+| | 4\H |sign off  |
+| | 4\S |sign off (hand can't be too good since the suit was strong enough, but no jump shift)  |
-  * At the 2 level: 3(+) card support, NF
-    *  E.g.  1\H-2\C / 2\D-2\H
-  * At the 3 level (w/ or w/o jump):
-    * If opener rebid his own suit: GI, w/ 2(+) card support
-      * E.g. 1\S-2\C-2\S-3\S
-    * If opener bid a new suit (w/o jump): GI, usually with 4 card support
-      * E.g. 1\D-2\C / 2\S-3\D, or 1\S-2\C / 2\D-3\S
-    * If opener raised responder's suit: GF, 3(+) card support (as opener has not denied 5 cards)
-      * E.g. 1\H-2\D / 3\D-3\H (stronger than raise to 4\H)
-    * If opener bid 2NT: GF, 3(+) card support
-      * E.g. 1\H-2\C / 2NT-3\H : \H fit with opener's single \H suit, GF. Stronger than 4\H.
-      * E.g. 1\H-2\D / 2NT-3\H : \H fit, if opener had the one-suited \H hand, and not \C Canapè