Sudoku

About Sudoku Unblocked

Sudoku unblocked is available to play for free online. Sudoku is the ultimate number-placement puzzle game that challenges your logical thinking and problem-solving abilities. This classic brain teaser features a 9x9 grid divided into nine 3x3 subgrids, where your mission is to fill every cell with numbers 1 through 9. The elegant rule is simple yet profound: each number must appear exactly once in every row, column, and 3x3 box. What makes Sudoku endlessly captivating is how it transforms simple arithmetic into a complex mental workout. Perfect for players seeking to improve concentration, develop strategic thinking, and exercise their minds. Whether you are a beginner learning the basics or an expert tackling difficult puzzles, this timeless game offers endless satisfaction through pure logic and deduction.

Game Screenshots

How to Play

• Click on any empty cell to select it for number input
• Enter numbers 1 through 9 using your keyboard or on-screen buttons
• Each number must appear once per row, column, and 3x3 box
• Use the hint feature if you get stuck on difficult puzzles
• Enable pencil mode to write multiple candidate numbers in cells
• Check your solution for errors using the validation button
• Complete the entire grid correctly to win the puzzle

Game Features

Game Tips & Strategies

• Start by scanning for numbers that appear frequently to find easy placements
• Use pencil marks to note possible candidates for each empty cell
• Look for rows, columns, or boxes with only one or two empty cells
• Apply the elimination technique: cross out impossible numbers systematically
• Focus on one number at a time across the entire grid
• Check intersections where rows and columns meet for hidden singles
• Practice regularly to recognize common patterns and improve solving speed