Normal sudoku rules apply. All arrows act as both modular arrows and entropic arrows. A digit on a modular arrow counts how many cells in the indicated direction have the same remainder mod-3 as itself, including itself. A digit on an entropic arrow counts how many cells in the indicated direction are in the same entropic group (123, 456, 789) as itself, including itself.
If you prefer to play directly in sudokupad then click below.
