Signatures

  • Green = Opposition
  • Blue = First bid from our side
  • RED = Responds from our side
  • Purple = Openers rebids
  • #Black = System link
Examples
Blackwood
  • 4NT=BW for aces
  • 5§=0
  • 5¨=1
  • 5©=2
  • 5ª=3
  •  
  • 5NT=BWM for kings
  • 6§=0
  • 6¨=1
  • 6©=2
  • 6ª=3
  • 6NT=4
  •  
  • -DOPI/ROPI=Steps
  • -DEPO:
    • DBL=even
    • Pass=Odd

Blackwood/Morrow

King of trump=5th ace
  • 4NT=BWM for aces
  • 5§=0/4
  • 5¨=1/5
  • 5©=2
  • 5ª=3
  •  
  • 5NT=BWM for kings
  • 6§=0
  • 6¨=1
  • 6©=2
  • 6ª=3
  • 6NT=4
  •  
  • -DOPI/ROPI=Steps
  • -DEPO:
    • DBL=even
    • Pass=Odd
Description

If the proces is interfered it is standard using DOPI/ROPI and DEPO as 1st steps in continuation.

This means you need a good partnership understanding if you want to be able to penalize opps. for interference, mostly demanding lead acc. Lightner DBL-convention.
Blackwood

Byzantine Blackwood

Roman Blackwood