Best Sudoku and Number Logic Puzzles to Play Free

Sudoku is the king of logic puzzles, but it has plenty of fun relatives. These number and grid puzzles can all be solved with pure logic. Every game here is free, runs in your browser and needs no download or account.

Classic Sudoku

Sudoku Online

Free Sudoku with four difficulty levels, from Easy for beginners to Expert. Play Sudoku Online

Sudoku

The classic 9x9 grid: fill every row, column and 3x3 box with the numbers 1 to 9. Play Sudoku

Sudoku with cats

CatDoku

One cat per row, column and color, and no cats next to each other. Play CatDoku

Catdoku Sudoku Puzzle

Place exactly one cat in every colored territory. Play Catdoku Sudoku Puzzle

More grid logic

Nonograms: Pixel Garden

Fill cells using number clues to reveal a hidden picture. No guessing, no timer. Play Nonograms: Pixel Garden

Shikaku Puzzle

Divide the grid into rectangles so each one contains exactly one number. Play Shikaku Puzzle

Patch Garden

A cozy rectangle puzzle where every seed clue grows into a garden patch. Play Patch Garden

Akagram

Place light bulbs to light every cell without bulbs shining on each other. Play Akagram

Math Crosswords

A crossword made of equations. Each number must fit two of them at once. Play Math Crosswords

Pets and Paints: Logic Puzzle

Combine clue blocks to place every animal and color it in. Play Pets and Paints: Logic Puzzle

How to solve Sudoku faster

• Scan for numbers that already appear many times. Their missing spots are easiest to find.
• Use pencil marks for candidates in harder grids.
• Never guess. If you are stuck, look for a row or box with only one possible spot.

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