Setup
Start with the default setup, then adjust options where this game supports them.
How to play Sudoku
- Goal
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Fill every row, column, and 3×3 box with the digits 1 to 9.
- Rules
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Each digit appears exactly once in every row, every column, and every 3×3 box. The givens are fixed.
- Controls
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Select a cell, then enter a digit. Use notes to pencil in the candidates you are still weighing.