2NT Natural Module

2N balanced is not used as an opening. Instead, it is used in the follow situations:

• 1♦ - 1♥; 2N
• 1♦ - 1♥; 1♠ - 1N; 2N
• (2X = Natural / weak) 2N
• (2X = Natural / weak) P (P) 2N
• Any modes of the above sequences where 2N bidder can be strong

2N

• 3♣
  Ask 5-card major
• 3♦
  5+♥. Transfer to 3♥. May have 4=♠
• 3♥
  5+♠. No 4+♥.
• 3♠
  Puppet to 3N. Either to play in 3N, or minors ST
• 3N
  Art. 5=♠ 4=♥ COG
• 4♣/♦
  Long ♥ / ♠
• 4♥/♠
  Long ♣ / ♦ ST
• 4N
  Inv to 6N
• 5m
  To play

Ask 5-card Major

2N - 3♣

• 3♦
  No 5-card major. May have a 4-card major

  • P
    To play. Long ♦
  • 3♥
    3-♥. May have 4=♠

    • 3♠
      4=♠.

      • 3N/4♠
        To play
      • 4m
        5+m ST
      • 4♥
        Fit ♠ ST
    • 3N
      3-♠
  • 3♠
    4=♥. 3=♠
  • 3N
    Art. 4-4 majors
• 3M
  5=M

  • P/3N/4M
    To play
  • 4m
    5+m ST
  • oM
    Fit M ST
  • 4N
    Quantitative

Transfer

2N - 3♦; 3♥

• 3♠
  3-♠ COG. May be long ♥ ST (Will pull later)
• 3N
  Art. 5=♥ 4=♠ COG
• 4m
  Nat ST
• 4♥
  MST

2N - 3♥; 3♠

• 3N
  5=♠ COG
• 4m
  Nat ST
• 4♥
  Art. Set ♠ ST
• 4♠
  MST

Note

Transferring to opponent’s major (e.g. (2♥) 2N; 3♦) means invite with 5oM.

Higher Responses

2N - 3♠; 3N

• P
  To play
• 4m
  5+m 4+om ST
• 4M
  5-5 minors, short M

2N - 3N

• P
  To play. Not interested in major
• 4M
  To play

2N - 4♣/♦

• 4♦/4♥
  General SI
• 4M
  To play

2N - 4♥/♠

• 1-step
  SI. 3/5 Keycards
• 2-step
  SI. 4 Keycards
• 5m
  NF