Pre-Defined Bidding Systems

• ACBL Club Series: Bidding in the 21st Century (Five Card Majors)
• ACBL Standard American Yellow Card (SAYC, 2006 Revised Version)
• Advanced Standard American Five Card Majors
• Danish Standard (Simple): Five Card Spades
• Dutch Standard (Simple): Four Card Majors
• Dutch/Danish (Advanced): Five Card Spades
• Finnish Standard
• French Five Card Majors
• JBTA Five Card Major Standard (Japan Bridge Teachers' Association)
• Standard English System
• Swedish Standard
• Traditional Acol
• Two Over One Game Force (Revised Version)
• Yotsuya Basic Standard Bid System

• General Approaches:
  American Four Card Majors (Goren)
  European Four Card Majors (Acol)
  American Five Card Majors
  French Five Card Majors
  European Five Card Spades
  Two Over One Game Force (1x-3y Strong)
  Two Over One Game Force (1x-3y Invitational)
  
• Opening with 4432 and 4333 (Four Card Majors only):
  Prepared Opening
  Major Suit First
  Lower Suit First
  
• Minimum Strength of Opening Suit Bids of One:
  Balanced Hands=Good 11 HCP, 12 HCP, Good 12 HCP, or 13 HCP
  Unbalanced Hands=9HCP, 10 HCP or 11 HCP
  
• Notrump Structure After an Opening Suit Bids of One:
  2NT after 1/1=18-20 HCP(F) or 17-18 HCP(NF)
  2NT after 2/1=15-18 HCP(F) or 12-14 HCP(NF)
  New Minor Forcing
  Checkback Stayman
  
• Raising Partner:
  Forcing Raises or Limit Raises
  2NT Forcing Raise (Jacoby 2NT 11+ or 16+, Stenberg)
  3NT Forcing Raise
  Splinter Bids
  Inverted Minor Raises
  Value Swiss, Trump Swiss, and Minor Suit Swiss
  Fourth Suit Forcing
  
• 1NT Opening Bids:
  12-14 HCP, 13-15 HCP, 15-17 HCP, 15-18 HCP, or 16-18 HCP
  No 5-card majors or may have a weak 5-card major
  Weak 1NT-Double-Redouble is strong or an escape with 4333, 4432, and 4441
  
• Responses to 1NT:
  2=Forcing Stayman, Non-Forcing Stayman or 4-response Stayman
  2/2=Sign Off or Jacoby Transfers
  2=Sign Off, Minor Suit Stayman, or Forces 3 for Sign Off in Either Minor
  2/2NT or 2/3=Minor Suit Transfer
  3/3=Preemptive, Game Invitation, or Slam Try
  3/3=Preemptive, Game Invitation, Game Forcing, or Slam Try
  4/4=Natural or Texas Transfers
  Lebensohl
  
• Responses to overcal 1NT (1x-1NT-p)
  2, 2 and 2 are natural sign off or
  2 and 2 are Jacoby transfers, 2 is sign off in either minor.
  
• Opening Suit Bids of Two:
  Strong Twos
  2 Strong and Artificial (2 response is negative or waiting, Second Negative=2NT or Cheaper Minor)
  Acol Twos, Benjamin Twos, or French Twos
  Weak Twos
  Flannery 2, Roman 2, or Mini-Multi 2
  
• Weak Two Bids:
  6-10 HCP, 6-11 HCP, 7-10 HCP, or 7-11 HCP
  New Suit Forcing or New Suit Non-Forcing
  2NT Ogust or 2NT Feature Asking
  
• 2NT Opening Bids:
  20-21 HCP, 21-22 HCP, or 22-24 HCP
  
• Responses to 2NT:
  3=Stayman, Puppet Stayman, or Baron
  3=Natural, Jacoby Transfers, or Flint
  3=Natural or Jacoby Transfers
  3=Natural or Minor Suit Stayman
  4/4=Natural or Texas Transfers
  
• 3NT Opening Bids:
  25-27 HCP, Gambling 3NT, or Acol 3NT
  
• Opening Preempts at the Three-Level:
  Sound, Light only when Not VUL, or Always Light
  
• Slam Conventions:
  Gerber
  Simple Blackwood
  Roman Key Card Blackwood (0314 and 1430 types)
  
• Other Offensive Bids:
  Negative Doubles
  Truscott 2NT(Jordan)
  Weak Jump Shifts over Opponent's Overcall
  Preemptive Jump Raises
  Maximal Overcall Doubles (Game Try Doubles)
  Support Doubles, Support Redoubles
  
• Minimum Strength of One-Level Overcalls:
  Aggressive Style=Good 6 HCP, Good 7 HCP, or Good 8 HCP (Raises are preemptive)
  Constructive Style=Good 9 HCP or Good 10 HCP (Raises are constructive)
  Four Card Suit Overcalls
  
• Minimum Strength of Two-Level Overcalls:
  Good 10HCP, Good 11HCP, or Good 12HCP
  
• Jump Overcalls:
  Weak (2NT: Natural, Feature, or Ogust)
  Intermediate
  
• Overcalls Against 1NT:
  Natural
  Landy
  Astro
  Cappelletti
  
• Minimum Strength of Takeout Doubles:
  Good 11 HCP or Good 12 HCP
  
• Direct Cue Bids:
  Strong Takeout
  Michaels
  Ghestem
  
• Other Defensive Bids:
  Responsive Doubles
  Leaping Michaels
  Lebensohl After a Takeout Double of a Weak Two-Bid
  Sandwich Notrump (Weak Takeout 1NT)