ThickShapes

Definition

A play (or stone) creates thick shape if it leaves behind little or no aji. The opponent cannot capture, cut or play painful forcing moves against it.

Types

Joseki Vol. 1 Fundamentals lists these types of thick shape moves:

• thick extension (also called nobi)
  • single extension
  • bipolar extensions
  • multiple thick extensions from a crosscut
• thick block
  • directional block
  • connecting block
  • cutting block
• thick connection
  • thick string connection
  • thick diagonal connection (also called kosumi or diagonal connection)
    • thick diagonal pair
    • thick diagonal pair and jump
    • thick diagonal string connection
  • thick jump
    • standard shape
    • solidified standard shape
    • standard one-point jump
    • jump from a hanging connection
    • jump from a thick wall
• thick cut protection
  • solid connection
  • hanging connection
  • empty net
  • thick throw-in
• thick turn
  • attacking a single stone worth defending
  • leaning on a light stone
  • playing at the head of at least two stones
  • mutually blocking turns
  • successive turns
• thick capture