Sudoku.by
  • Home
  • Classic
  • Killer
  • Daily--:--:--
  • Competition
  • Leaderboard
  • Rules
  • Blog
  • Sudoku Variants
    Extra Regions
    Diagonal Sudoku Hyper / Windoku Samurai Sudoku Jigsaw Sudoku Irregular Diagonal
    Line Constraints
    Thermo Sudoku Arrow Sudoku Renban Sudoku German Whispers Palindrome Sudoku Between Lines
    Grid Variants
    Mini Sudoku (4×4) Cube / 3D Sudoku Alphabet Sudoku
    Outside Clues
    Little Killer Sudoku Sandwich Sudoku Skyscraper Sudoku Outside Sudoku
    Cell Relationships
    Kropki Sudoku XV Sudoku Consecutive Sudoku Non-Consecutive Sudoku Greater Than / Less Than Odd / Even Sudoku
    Anti-Constraints
    Anti-King Sudoku Anti-Knight Sudoku Anti-Consecutive Sudoku
    Special
    Clone Sudoku Chaos Construction Sukaku
    View All Variants →
Sign In Register
Home
Easy Medium Hard Expert Evil Master Extreme
Killer Sudoku Daily Challenge Competition Leaderboard Rules Blog
Extra Regions
Diagonal Sudoku Hyper / Windoku Samurai Sudoku Jigsaw Sudoku Irregular Diagonal
Line Constraints
Thermo Sudoku Arrow Sudoku Renban Sudoku German Whispers Palindrome Sudoku Between Lines
Grid Variants
Mini Sudoku (4×4) Cube / 3D Sudoku Alphabet Sudoku
Outside Clues
Little Killer Sandwich Sudoku Skyscraper Sudoku Outside Sudoku
Cell Relationships
Kropki Sudoku XV Sudoku Consecutive Non-Consecutive Greater Than Odd / Even
Anti-Constraints
Anti-King Anti-Knight Anti-Consecutive
Special
Clone Sudoku Chaos Construction Sukaku View All Variants →
Sign In Create Free Account
Home› Blog› News

News

Articles tagged with "News".

Transitioning from Medium to Hard Sudoku Difficulty Levels

Medium Sudoku and Hard Sudoku look similar on the grid but require completely different techniques. …

May 25, 2026

Simple Steps to Solve Easy Sudoku Puzzles for New Players

Easy Sudoku puzzles are designed so there is always at least one obvious move. Here are the exact st…

May 22, 2026

How the 9x9 Sudoku Grid is Built and Structured

The 9×9 Sudoku grid looks simple at first glance, but its structure is carefully engineered. Underst…

May 19, 2026

Essential Sudoku Terminology for Every Serious Player

Naked Singles, Hidden Pairs, locked candidates, conjugate pairs — Sudoku has its own vocabulary. Her…

May 16, 2026

The Real Meaning of Sudoku and Where the Name Comes From

The name Sudoku has a meaning that most players never know. It comes from a Japanese phrase that is …

May 10, 2026

Exploring the History and Global Origin of Sudoku

Sudoku wasn't invented in Japan. Discover the true story of how an American architect created it in …

Apr 25, 2026

Why Sudoku is a Logic Puzzle and Not a Math Game

Many people avoid Sudoku because they think it requires math. It doesn't. Here's the proof — includi…

Apr 25, 2026
Sudoku.by

Free online Sudoku puzzles for everyone. From beginner to extreme - Challenge yourself daily.

Play
  • Classic Sudoku
  • Killer Sudoku
  • Evil Sudoku
  • Daily Sudoku
  • Weekly Competition
  • Sudoku Leaderboard
  • Sudoku for Kids
  • Easy Sudoku
  • Hard Sudoku
Variants
  • Diagonal Sudoku
  • Arrow Sudoku
  • Thermo Sudoku
  • Jigsaw Sudoku
  • Sandwich Sudoku
  • Samurai Sudoku
  • Hyper Sudoku
  • Kropki Sudoku
  • 6x6 Sudoku
  • All 31 Variants
Learn
  • Sudoku Rules
  • How to Solve Sudoku
  • How to Play
  • Sudoku Glossary
  • Sudoku FAQ
  • Killer Sudoku FAQ
  • Printable Sudoku
  • Killer Sudoku Printable
  • Sudoku Generator
  • Blank Sudoku Grid
  • Sudoku Solver
  • Blog
Company
  • About Us
  • Awards
  • Contact
  • Privacy Policy
  • Terms & Conditions
  • Cookies
  • Playpen Studios
  • My First Games
© 2026 Sudoku.by — All rights reserved Powered by