Draw on Edges: OFF Panel: OFF

     

  • Check All
  • Surface
  • Line Normal
  • Line Diagonal
  • Line Free
  • Line Middle
  • Line Helper
  • Edge Normal
  • Edge Diagonal
  • Edge Free
  • Edge Helper
  • Edge Erase
  • Wall
  • 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

Standard Yajisan Kazusan rules: Shade some cells black so that all unshaded number and arrow clues indicate the exact count of shaded cells in the given direction. Shaded cells cannot share an edge, and all white cells must remain connected as part of a single connected group. It is allowed to shade over some of the numbered cells; a shaded over clue may or may not be true.

For automatic solution checking, the shaded cells must be marked in black or a shade of gray.
CTRL + z CTRL + y Erase elements that belongs to the selected mode Erase problem or solution grid

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