Sudoku
🔟 Sudoku
Fill the 9x9 grid with numbers 1-9 - no repeats allowed!
About Sudoku
Sudoku is the world's most popular number puzzle game, challenging millions of players daily. Fill every row, column, and 3x3 box with numbers 1-9 without repeating any digit. Starting with a partially filled grid, use pure logic and deduction to determine the correct number for each empty cell. No guessing is ever needed — every puzzle has a single unique solution that can be reached through careful reasoning. With multiple difficulty levels from gentle warm-ups to fiendishly hard expert puzzles, Sudoku provides endless brain-training entertainment.
Game Features
How to Play
- 1Fill each empty cell with a number from 1 to 9
- 2Each row must contain all numbers 1-9 without any repeats
- 3Each column must contain all numbers 1-9 without any repeats
- 4Each 3x3 box (9 total) must contain all numbers 1-9 without any repeats
- 5Use logic and deduction to determine the only possible number for each cell
- 6Use pencil marks to note candidate numbers for uncertain cells
- 7No guessing needed — every puzzle has exactly one logical solution
Tips & Strategies
Start with rows, columns, or boxes that have the most filled cells — fewer possibilities
Look for naked singles — cells where only one number can possibly fit
Scan rows and columns for hidden singles — a number that can only go in one place
Use pencil marks to track possibilities, then eliminate candidates systematically
Practice daily to dramatically improve your solving speed and pattern recognition
Never guess — if you can't logically determine a number, look for easier cells first
Learn advanced techniques (pointing pairs, box-line reduction) for harder puzzles
