Click cells on the board to add them to this cage. Cells already in a cage cannot be reused. Cage cells must be orthogonally connected.
Choose the dot kind. Then click two adjacent cells on the board to place a dot between them. Click an existing dot's two cells with the same kind to remove it, or with a different kind to change it.
List the digits that must appear in some combination among the four cells at this corner. Up to 4 digits.
Click cells on the board to add them to this rule's region. Cells can be anywhere on the grid — they don't need to be connected.
What would you like to do?
Hints favor logical deductions over revealing the solution. Apply the suggestion to see the effect on the board.
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