Culbertson 4NT/5NT

Source

• ACBL Dictionary

• 5-Lowest suit bidded:
  • *No ace.
  • *Signoff.If this is above 5-level of agreed trump suit: Bid something else below
• 5§¨©ª=1 ace here.

  • If this suit has been bidded, then bid 6 of the suit

• 5§¨©ª=King here.2 aces + a king

  • (not in trump suit or a suit bidded)

• 5NT=
  • *2 aces
  • *1 ace + all kings in suits bidded

4NT bidder must hold either of these:

• *3 aces

• *2 aces + a king of a suit bidded