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Simple Rules for Playing Sudoku with Numbers and Letters
You can play Sudoku with digits, letters, colors, or symbols — the logic stays exactly the same. Here are the rules in their simplest form and why the choice of symbols does not matter.
Read ArticleThe 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 also a perfect summary of the game's only rule.
The Difference Between Rows Columns Blocks and Nonets in Sudoku
Rows, columns, blocks, boxes, nonets — Sudoku has several names for the same three types of groups. Here is what each term means and why the distinction matters when you solve.
How to Properly Pronounce and Define Sudoku in English and Japanese
Most English speakers mispronounce Sudoku. Here is how it is said in Japanese, what the name actually means, and why the word tells you everything about how to play.
Understanding the Official Rules and Goal of Sudoku
The rules of Sudoku fit in one sentence — but understanding what they actually demand is what separates guessers from solvers. Here is the complete picture.
Absolute Beginner Guide to Starting Your First Sudoku Puzzle
Never solved a Sudoku before? This step-by-step guide explains the grid, the one golden rule, and exactly how to make your first move — no math required.
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 1979, how Japan transformed it, and how it conquered the world.
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 — including a letter-grid test — that Sudoku is pure logic.
Beginner's Guide to Sudoku
New to Sudoku? This guide walks you through the rules, the grid, your first moves, and the mistakes to avoid — everything you need to go from zero to solving.