Pre-Defined Bidding Systems

• General Approaches:
  American Four Card Majors (Goren)
  European Four Card Majors (Acol)
  American Five Card Majors
  French Five Card Majors
  Two Over One Game Force
  European Five Card Spades
  
• 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 or 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
  
• 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
  
• 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)