Draw on Edges: OFF Panel: OFF

     

  • Check All
  • Surface
  • Multicolor
  • Line Normal
  • Line Diagonal
  • Line Free
  • Line Middle
  • Line Helper
  • Edge Normal
  • Edge Diagonal
  • Edge Free
  • Edge Helper
  • Edge Erase
  • Wall
  • Move All
  • Number Normal
  • Number L
  • Number M
  • Number S
  • Candidates
  • Number 1/4
  • Number Side
  • Sudoku Normal
  • Sudoku Corner
  • Sudoku Centre
  • Shape
  • Special
  • Thermo
  • Sudoku Arrow
  • Composite

Selection: edgesub
Divide the grid into regions of orthogonally connected cells. Two regions of the same size may not share an edge. Each clue contains a number and a mathematical operation. For cells diagonally opposite each other across a clue, the number represents the result of applying the operation to the size of those cells' regions.
CTRL + z CTRL + y Erase elements that belongs to the selected mode Erase problem or solution grid

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Mode: Composite