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

Shade some cells so that all shaded cells form one orthogonally connected area. Clues cannot be shaded, and no 2x2 region may be entirely shaded. Each unshaded area must be an L shape with a width of one cell. Arrows must lie at one end of an L and point toward the bend. Circles must lie at the bend of an L, and if one contains a number, the L it is inside must contain the indicated amount of cells.
CTRL + z CTRL + y Erase elements that belongs to the selected mode Erase problem or solution grid

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Mode: Surface