Puzzle rules
The Four Clearings
Complete the 9×9 Sudoku. Each row, column, and standard 3×3 box must contain 1–9 exactly once. Each additional shaded 3×3 window must also contain 1–9 exactly once.
How to solve
Complete rules
Goal: Complete the Windoku grid. Rules: - Each row, column, and standard 3×3 box must contain the numbers 1–9 exactly once. - Each shaded 3×3 window must also contain the numbers 1–9 exactly once. - All standard and shaded-region rules apply at the same time.