How to Get Better at Sudoku (Step by Step)
Most solvers plateau because they jump difficulty instead of learning one technique at a time. Here is the order techniques should be learned, and how to tell which one you are missing.
Articles
Sudoku Articles and Guides
Long-form guides on improving at Sudoku, teaching it, printing it well, and how the puzzles are constructed.
Printable Sudoku for Teachers: A Practical Classroom Guide
Which difficulty suits which age group, how to print a differentiated set for a mixed-ability class in one PDF, and why Sudoku works for pupils who dislike maths.
Sudoku and Brain Health: What the Evidence Says
Sudoku is widely recommended for cognitive health. Here is what puzzle-based cognitive research actually supports, what it does not, and how to choose puzzles sensibly.
How Sudoku Puzzles Are Generated
How a Sudoku generator builds a grid, removes clues, and proves exactly one solution remains — plus why the 17-clue minimum took a supercomputer to establish.
Printing Sudoku: Getting Grid Size, Ink and Layout Right
Why printed grids come out the wrong size, how many puzzles to fit per page, how to cut ink use, and which paper size to choose.
Sudoku Variants Explained
What actually differs between Sudoku variants, which are difficulty labels rather than formats, and how to pick the right one.