Precision Bidding Summary

Click on any highlighted bid to jump to responses for that bid, or jump to: Opening Bids | Responses to 1 Club | Self-Sufficient Suit | Rebids after 1 C–1 NT | Rebids after 1 C–1 NT; 2 C | Responses to 2 Clubs | Rebids after 2 C–2 D | Responses to 2 Diamonds | Rebids after 2 D–2 NT

Opening Bids
Bid Meaning
1 C Alert. Usually 16 or more HCP. Sometimes 15 guarded HCP with a 6-card suit (or longer) good enough to play opposite a singleton, with a void or singleton (i.e., not 6-3-2-2 nor 7-2-2-2 distribution).
1 D Alert. 11 to 15 HCP, no 5-card major, no more descriptive bid. May be as few as 2 Diamonds.
1 H 11 to 15 HCP, at least 5 Hearts.
1 S 11 to 15 HCP, at least 5 Spades.
1 NT Announce. 14 to 16 HCP, no 5-card major, no singletons.
2 C Alert. 11 to 15 HCP, 6 or more Clubs. May have a 5-card Major if Clubs are longer.
2 D Alert. 11 to 15 HCP, 4=4=1=4, 4=4=0=5, 4=3=1=5, or 3=4=1=5 distribution. (My mnemonic: one card shy of 4=4=1=5 distribution.)
2 H Standard weak 2-bid: 5 to 10 HCP, 6-card Heart suit, disciplined in first or second seat.
2 S Standard weak 2-bid: 5 to 10 HCP, 6-card Spade suit, disciplined in first or second seat.
2 NT Announce. 22 to 23 HCP, NT distribution. May have a 5-card major.
Responses to 1 Club
Bid Meaning
1 D Alert. 0 to 7 HCP, not suitable for 2 H nor 2 S responses below.
Exception: An Ace and a King count as a positive response, provided that both are in long (4+ cards) suits (same or different).
Exception: With exactly 8 HCP, 4-3-3-3 distribution, and lousy spot cards, you may bid 1 D, hoping to play NT from the other side.
1 H Alert. 8 or more HCP, at least 5 Spades. Does not promise any Spade honors.
Beta acceptance: If opener rebids 1 S, it promises 3-card support and asks for controls. (First step 0–2.) Opener can then rebid Spades at the lowest level (TAB) or another suit (CAB).
Other rebids: Opener can bid his own suit naturally or rebid NT (jumping to show extra HCP). A NT bid does not deny 3-card Spade support. Opener can also rebid 2 S, showing 16–19 HCP and either 4-card support or 3-card support with an unbalanced hand.
1 S Alert. 8 or more HCP, at least 5 Clubs. Does not promise any Club honors.
Beta acceptance: If opener rebids 2 C, it promises 3-card support and asks for controls. (First step 0–2.) Opener can then rebid Clubs at the lowest level (TAB) or another suit (CAB).
Other rebids: Opener can bid his own suit naturally or rebid NT (jumping to show extra HCP). A NT bid does not deny 3-card Club support. Opener can also rebid 3 C, showing 16–19 HCP and either 4-card support or 3-card support with an unbalanced hand.
1 NT Natural. 8 to 13 HCP, NT distribution (4-3-3-3 or 4-4-3-2).
2 C Alert. 8 or more HCP, at least 5 Diamonds. Does not promise any Diamond honors.
Beta acceptance: If opener rebids 2 D, it promises 3-card support and asks for controls. (First step 0–2.) Opener can then rebid Diamonds at the lowest level (TAB) or another suit (CAB).
Other rebids: Opener can bid his own suit naturally or rebid NT (jumping to show extra HCP). A NT bid does not deny 3-card Diamond support. Opener can also rebid 3 D, showing 16–19 HCP and either 4-card support or 3-card support with an unbalanced hand.
2 D Alert. 8 or more HCP, at least 5 Hearts. Does not promise any Heart honors.
Beta acceptance: If opener rebids 2 H, it promises 3-card support and asks for controls. (First step 0–2.) Opener can then rebid Hearts at the lowest level (TAB) or another suit (CAB).
Other rebids: Opener can bid his own suit naturally or rebid NT (jumping to show extra HCP). A NT bid does not deny 3-card Heart support. Opener can also rebid 3 H, showing 16–19 HCP and either 4-card support or 3-card support with an unbalanced hand.
2 H Natural weak jump shift. 4 to 6 HCP, at least 6 Hearts. Most of the HCP are in Hearts. Denies a second 4-card suit.
2 S Natural weak jump shift. 4 to 6 HCP, at least 6 Spades. Most of the HCP are in Spades. Denies a second 4-card suit.
2 NT Natural. 14 or more HCP, NT distribution.
3 C Alert. 8 or more HCP, 4-4-4-1 distribution, with the singleton in Clubs or Spades. Too weak to bid 3 H or 3 NT (see below).
3 D Alert. 8 or more HCP, 4-4-4-1 distribution, with the singleton in Diamonds or Hearts. Too weak to bid 4 C or 4 D (see below).
3 H Alert. 12 or more HCP, 4 or more controls (A = 2, K = 1), and 1=4=4=4 distribution.
3 S Alert. Like a Gambling 3 NT: at least a 7-card suit headed by A-K-Q. It may have outside strength as well.
3 NT Alert. 12 or more HCP, 4 or more controls (A = 2, K = 1), and 4=4=4=1 distribution.
4 C Alert. 12 or more HCP, 4 or more controls (A = 2, K = 1), and 4=4=1=4 distribution.
4 D Alert. 12 or more HCP, 4 or more controls (A = 2, K = 1), and 4=1=4=4 distribution.

Self-Sufficient Suit

After opening 1 C and a negative 1 D response, if opener's rebid is a jump to the 3-level then it shows a self-sufficient suit (SSS): A-K-Q-J-4-3-2 or better. Responder has only three options:

new suit Ace or void in that suit
3 NT an outside King or singleton. Opener can bid 4 C to ask: responder bids the suit with the feature, or 4 NT if it is in Clubs.
raise no first- nor second-round controls
Rebids after 1 C–1 NT
Bid Meaning
2 C "Stayman" (transfer Stayman?), asking for distribution and narrower HCP ranges.
2 D Natural. Shows 5+ Diamonds. Responder bids 2 NT with a doubleton, raises or cue bids (showing an Ace) with support.
2 H Natural. Shows 5+ Hearts. Responder bids 2 NT with a doubleton, raises or cue bids (showing an Ace) with support.
2 S Natural. Shows 5+ Spades. Responder bids 2 NT with a doubleton, raises or cue bids (showing an Ace) with support.
2 NT Alert. Shows 5+ Clubs. Responder bids 3 NT with a doubleton, 3 C or cue bids (showing an Ace) with support. (Subject to change: we may play this as natural if our range for an opening 1 NT changes.)
3 C Natural. Long suit with slam interest.
3 D Natural. Long suit with slam interest.
3 H Natural. Long suit with slam interest.
3 S Natural. Long suit with slam interest.
3 NT Natural. Sign off.
Rebids after 1 C–1 NT; 2 C
Bid Meaning
2 D Alert. 8–10 HCP, 4 Hearts. (May also have 4 Spades.)
2 NT asks for a second 4-card suit: 3 C, 3 D are natural, 3 H shows Spades, 3 S shows 3-4-3-3 with good Hearts, and 3 NT shows 3-4-3-3 with weak Hearts.
2 H Alert. 8–10 HCP, 4 Spades. (Denies 4 Hearts.)
2 NT asks for a second 4-card suit: 3 C, 3 D are natural, 3 H shows 4=3=3=3 with weak Spades, and 3 S shows 4=3=3=3 with strong Spades.
2 S Alert. 8–10 HCP, no 4-card major.
2 NT asks for more information: 3 C shows 3=3=3=4, 3 D shows 3=3=4=3, 3 H shows 2=3=4=4, 3 S shows 3=2=4=4, 3 NT shows 2=3=4=4 or 3=2=4=4 with strong majors.
2 NT Natural. 11–13 HCP, 4-3-3-3 distribution.
3 C asks for more information: responder bids his 4-card suit, or 3 NT to show Clubs.
3 C Alert. 11–13 HCP, 4-4 in Clubs and a major.
3 D asks responder to bid his major.
3 D Alert. 11–13 HCP, 4-4 in Diamonds and a major. Opener can bid 3 H or 3 S, natural.
3 H Alert. 11–13 HCP, 4-4 in the majors.
3 S Alert. 11–13 HCP, 2=3=4=4 distribution.
3 NT Alert. 11–13 HCP, 3=2=4=4 distribution.
Responses to 2 Clubs
2 D Alert. Asks partner to describe his hand.
2 H Natural, constructive. At least 5 Hearts. Usually 8 to a poor 10 HCP.
2 S Natural, constructive. At least 5 Spades. Usually 8 to a poor 10 HCP.
2 NT Natural, invitational, 1-round force. 10–11 HCP. Opener rebids 3 C with a minimum; anything else is forcing to 3 NT.
3 C Preemptive.
3 D Natural. Forcing to 3 NT, at least 6 Diamonds.
3 H Natural. Forcing to 3 NT, at least 6 Hearts.
3 S Natural. Forcing to 3 NT, at least 6 Spades.
3 NT Natural, to play. Usually 13–15 HCP, no interest in the Majors.
4 C Natural, premptive.
4 D ???
4 H Natural, to play. Long suit, no slam interest.
4 S Natural, to play. Long suit, no slam interest.
Rebids after 2 C–2 D
2 H Natural. At least 4 Hearts.
2 S Natural. At least 4 Spades.
2 NT Natural. 11–13 HCP, no 4-card Major, no singletons.
3 C Natural. At least 6 Clubs, no 4-card Major.
3 D Natural. At least 4 Diamonds.
3 H Natural. At least 5 Hearts and 6 Clubs.
3 S Alert. Solid 6-card (or more) Club suit or balanced with 14–15 HCP. Responder normally bids 3 NT.
3 NT Alert. At least 5 Spades and 6 Clubs.
Responses to 2 Diamonds
?? Most bids are to play, since the opening bid is so descriptive. There are two exceptions:
2 NT Alert. Asks for more informartion.
3 D Asks for controls: the first step shows 0–2, the next shows 3, etc. Ditto if responder bids Diamonds after the response to the 2 NT asking bid.
Rebids after 2 Diamonds, 2 NT
3 C 4=3=1=5 or 3=4=1=5 distribution, 11–13 HCP. 3 D asks about the majors: opener bids his 4-card suit.
3 D 4=3=1=5 or 3=4=1=5 distribution, 14–15 HCP. 3 H asks about the majors: opener bids 3 S (natural) or 3 NT (to show Hearts).
3 H 4=4=1=4 distribution, 11–13 HCP.
3 S 4=4=1=4 distribution, 14–15 HCP.
3 NT 4=4=0=5 distribution, 11–13 HCP.
4 C 4=4=0=5 distribution, 14–15 HCP.