3NT Natural Module

Used in the following situations (where 3N is likely bal, but unnecessary):

• 1♣ (Bid) 3N
• 1♦ (Bid) 3N
• 1♦ (Bid) P (P); 3N
• (Bid) 3N
• (Bid) P (P) 3N

3N

• P
  To play. Non-descriptive
• 4♣
  Puppet to 4♦, then

  • 4♥
    Set ♣ as trump. ST
  • 4♠
    Set ♦ as trump. ST
  • 4N
    RKCB in ♥
  • 5♣
    Both minors. NF
• 4♦
  Puppet to 4♥, then

  • P/4♠/5m
    To play
  • 4N
    RKCB in ♠
• 4M
  Natural SI. NF
• 4N
  Bal SI
• 5m
  Natural SI. NF