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Sudoku Leader
  • 👥Multiplayer
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  • 🔢Classic Sudoku
    • 4×4 Sudoku
    • 6×6 sudoku
    • 12×12 sudoku
    • 16×16 sudoku
    • 25×25 sudoku
  • ⚡Extreme Modes
    • 💀 Evil Sudoku
    • 💣 Killer Sudoku
    • ⚔️Samurai Sudoku
    • 📐Jigsaw Sudoku
  • 👶Kids Sudoku
  • 🖨️Printable
    • Printable Sudoku
    • 12×12 Printable
    • 16×16 Printable
    • 25×25 Printable
    • Jigsaw Printable
    • Killer Sudoku Printable
    • Samurai Sudoku Printable
  • 🛠️Tools
    • Sudoku Generator
    • Sudoku Solver
    • 4×4 sudoku Solver
    • 6×6 Sudoku Solver
    • Blank Sudoku Grid
    • killer sudoku calculator​

Terms of Service

The rules of the game. Please read these terms carefully before using our solvers, generators, and leaderboards.

Last Updated: April 8, 2026

1. Agreement to Terms

By accessing or using Sudoku Leader (the “Website”), you agree to be bound by these Terms of Service. If you disagree with any part of these terms, you may not access the Website or use our puzzle tools.

2. Global Leaderboard Rules & Fair Play

We built our Global Leaderboards and XP system to foster a fun, competitive, and honest community. By logging in and participating, you agree to the following rules of fair play:

  • No Automated Bots: Using scripts, auto-solvers, or automated tools to artificially inflate your XP, daily streak, or solve times is strictly prohibited.
  • Account Integrity: We reserve the right to reset scores, remove XP, or permanently ban user accounts that are found to be exploiting bugs or manipulating the Firebase database.
  • You are responsible for maintaining the confidentiality of your Google login credentials used to access the leaderboards.

3. Intellectual Property & Printables

All original code, site design, solvers, and proprietary algorithms on Sudoku Leader are the intellectual property of the site owner. However, we love sharing our puzzles!

  • Free Personal Use: You are highly encouraged to generate, download, and print our PDF Sudoku grids for personal use, classroom education, and family entertainment.
  • No Commercial Redistribution: You may not systematically scrape our puzzle generators, mass-download PDFs to compile into books for resale, or commercially distribute our grids without explicit written permission.

4. Disclaimer of Warranties (“As-Is”)

Sudoku Leader is provided on an “AS IS” and “AS AVAILABLE” basis. While we strive to provide lightning-fast, bug-free tools, we make no warranties, expressed or implied, that the Website will be uninterrupted, secure, or completely error-free. We do not guarantee the mathematical absolute perfection of every generated puzzle, though our algorithms are rigorously tested.

5. Limitation of Liability

In no event shall Sudoku Leader, nor its owner, be liable for any indirect, incidental, special, consequential or punitive damages, including without limitation, loss of data, use, or other intangible losses, resulting from your access to or use of or inability to access or use the Website.

6. Changes to Terms

We reserve the right, at our sole discretion, to modify or replace these Terms at any time. We will post the updated terms on this page and change the “Last Updated” date. Your continued use of the Website after any such changes constitutes your acceptance of the new Terms of Service.

Questions about these terms or want to report a bug?

sudokuleader.com@gmail.com

🎮 The Sudoku Arcade

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Daily Challenge

New handcrafted puzzles every 24 hours. Compete globally!

🧸

Kids Sudoku

Fun, picture-based puzzles to build logic skills for beginners.

🧩 Classic Grids
🔥 Extreme
🖨️ Printables
🛠️ Tools
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Classic Grids

Select your preferred grid size to play online.

4x4
4x4 Mini
6x6
6x6 Beginner
9x9
9x9 Standard
12x12
12x12 Dodeca
16x16
16x16 Giant
25x25
25x25 Titan
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Extreme Modes

Special logic variants for advanced players.

💀
Killer Sudoku
😈
Evil Sudoku
🎌
Samurai Sudoku
📐
Jigsaw Sudoku
×

PDF Printables

Download unlimited offline worksheets.

📄
Classic
💀
Killer
📐
Jigsaw
📏
12x12
🧩
16x16
🤯
25x25
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Custom Tools

Build, solve, and calculate puzzles.

🤖
Auto Solver
🎨
Generator
🔲
Blank Grids
🧮
Killer Calc

Sudoku Leader

Your home for free, daily Sudoku puzzles on an easy-to-use platform. Whether you're relaxing with a quick 9x9 or taking on the massive 25x25 Titan, there's a grid here for everyone. Grab a coffee, track your progress, and join a community of players who love training their brains just as much as you do.

Play Sudoku

  • Multiplayer Sudoku
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  • Kids 4x4 & 6x6
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  • Samurai (21x21)
  • Giant (16x16)
  • Titan (25x25) 🔥

Tools & Apps

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  • Free Printables 🖨️
  • Blank Sudoku Grids
  • Official App

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