1. Home
  2. Printables
  3. 9x9 Sudoku

9x9 Sudoku Puzzles

Challenge yourself with 9x9 Sudoku puzzles, thoughtfully designed for teens and adults who enjoy logic games and mindful challenges. With 81 cells to fill, each grid invites you to test your reasoning skills, sharpen your focus, and enjoy a moment of quiet concentration without screens or distractions.

Your goal is simple but satisfying: fill every row, column, and 3×3 square with the numbers 1 to 9, making sure no digit repeats.

Each puzzle is included in a high quality PDF, perfect for A4 printing at home, in classrooms, or on the go.

The collection is classified by difficulty from easy to very hard, making it perfect for puzzle lovers, students, and adults looking for a clever way to unwind and keep their brain active.

Part of the Sudoku Puzzles collection, Last updated on Sat, 31 May 2025 13:02:24 GMT.

Free Printables

Easy 9x9 Sudoku Puzzle (N1)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 1.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 1. | zuzuzi.com

Easy 9x9 Sudoku Puzzle (N2)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 2.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 2. | zuzuzi.com

Easy 9x9 Sudoku Puzzle (N3)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 3.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 3. | zuzuzi.com

Easy 9x9 Sudoku Puzzle (N4)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 4.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 4. | zuzuzi.com

Easy 9x9 Sudoku Puzzle (N5)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 5.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 5. | zuzuzi.com

Easy 9x9 Sudoku Puzzle (N6)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 6.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 6. | zuzuzi.com

Easy 9x9 Sudoku Puzzle (N7)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 7.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 7. | zuzuzi.com

Easy 9x9 Sudoku Puzzle (N8)

Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 8.
Simple and fun 9x9 Sudoku puzzle for young learners or first-timers. Level: Easy. Variant 8. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N1)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 1.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 1. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N2)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 2.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 2. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N3)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 3.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 3. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N4)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 4.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 4. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N5)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 5.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 5. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N6)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 6.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 6. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N7)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 7.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 7. | zuzuzi.com

Medium 9x9 Sudoku Puzzle (N8)

Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 8.
Engaging 9x9 Sudoku puzzle that requires a bit more focus. Level: Medium. Variant 8. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N1)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 1.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 1. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N2)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 2.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 2. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N3)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 3.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 3. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N4)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 4.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 4. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N5)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 5.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 5. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N6)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 6.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 6. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N7)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 7.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 7. | zuzuzi.com

Hard 9x9 Sudoku Puzzle (N8)

Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 8.
Challenging 9x9 Sudoku puzzle for sharp minds looking for a brain workout. Level: Hard. Variant 8. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N1)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 1.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 1. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N2)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 2.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 2. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N3)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 3.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 3. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N4)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 4.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 4. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N5)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 5.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 5. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N6)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 6.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 6. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N7)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 7.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 7. | zuzuzi.com

Very Hard 9x9 Sudoku Puzzle (N8)

Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 8.
Tough and rewarding 9x9 Sudoku puzzle for experienced players. Level: Very Hard. Variant 8. | zuzuzi.com

How to Play a 9x9 Sudoku Puzzle

A 9x9 sudoku puzzle is a classic logic game with a grid of 81 cells, divided into nine 3×3 boxes. The goal is to fill in the numbers 1 through 9 so that each number appears only once in every row, every column, and each box. The numbers given at the start of the puzzle must remain unchanged. You only fill in the empty spaces using logic, not guessing.

Sudoku puzzles help you practice concentration, memory, and logical thinking. Solving a grid requires focus, attention to patterns, and decision-making. It's a great activity for keeping your mind sharp and relaxed at the same time.

How does difficulty work in 9x9 sudoku?

The difficulty depends on how many numbers are filled in at the start, and where they are placed. Easy puzzles have more clues, while harder ones require deeper thinking and advanced strategies. All puzzles still follow the same basic rules.

Tips for Solving a 9x9 Sudoku Puzzle

Start with the rows, columns, or boxes that have the most numbers already filled in. Look for numbers that can only go in one place. Use a pencil so you can erase and try again. Take your time to think logically rather than guessing.