Your goal is to correctly mark every orange hexagon as either blue or black.
A number inside a dark clue cell shows how many adjacent cells are blue.
Use the clues together to identify the correct state of each orange cell.
Mark all required blue cells and eliminate the remaining cells as black.
Complete the puzzle when no orange cells remain.
Controls
Desktop
Left-click: Mark a cell blue
Right-click: Mark a cell black
Click the same cell again: Undo that mark
U or Ctrl + Z: Undo
R: Restart
H: Hint
Esc: Pause
Mobile
Tap: Mark a cell blue
Long-press: Mark a cell black
Some versions may also include separate Blue and Black selection buttons.
Clue Examples
0: None of the neighboring cells are blue.
6: All six neighboring cells are blue.
3: Exactly three neighboring cells are blue.
Special clue symbols may indicate that blue cells must be consecutive, separated, or located along a specific direction.
Use deduction, compare overlapping clues, and solve every board without guessing.