Sudoku Blog
Tips, strategies, history, and guides for sudoku players of all levels — from absolute beginners to competitive solvers.
How to Play Sudoku: A Complete Guide for Beginners
Understand the three basic rules, see a 4×4 example, and learn your first solving technique.
5 Basic Sudoku Strategies Every Beginner Should Know
Scanning, naked singles, hidden singles, block elimination, and naked pairs — with examples.
Advanced Sudoku Techniques: X-Wing, Swordfish, and More
Master X-Wing, Swordfish, XY-Wing, and forcing chains to solve hard and evil puzzles.
The History of Sudoku: From Latin Squares to Global Phenomenon
From Euler's 18th-century Latin squares to Nikoli's naming and the global sudoku boom.
Sudoku for Kids: How to Introduce Logic Puzzles to Children
Start with 4×4 grids, use visual clues, and build a daily 5-minute habit. Includes free printables.
Sudoku Variations Explained: 4×4, 6×6, 9×9, and Beyond
Explore 4×4, 6×6, 9×9, plus killer sudoku, jigsaw sudoku, and diagonal variants.
Does Sudoku Really Keep Your Brain Sharp? What Science Says
What research actually shows about puzzle-solving, memory, and cognitive decline.
How to Solve Sudoku Faster: 7 Speed Tips from Experts
Seven proven tips to improve your solving speed, from scanning techniques to practice routines.