Sudoku Guide
How to Play Sudoku
Sudoku is a logic puzzle played on a 9×9 grid. The goal is to fill every empty cell with a number from 1 to 9.
The three rules
- Every row must contain the numbers 1 through 9 exactly once.
- Every column must contain the numbers 1 through 9 exactly once.
- Every 3×3 box must contain the numbers 1 through 9 exactly once.
Getting started
Look for a row, column, or box with many numbers already filled in. Determine which numbers are missing, then check which empty cells can legally contain each missing number.
When only one number can fit in a cell, you have found a single. Place it and repeat the process.