Sudoku Knowledge Base
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Must Read
Solving Tips
Complete Sudoku Techniques Guide: From Beginner to Advanced
A comprehensive index of Sudoku solving techniques, covering basic terminology, beginner tips, intermediate strategies to advanced methods.
User Guide
Complete Multi-Select Guide: Efficient Techniques for Marking Candidates
Learn how to use multi-select mode to quickly mark candidate numbers. This guide covers usage methods, practical tips, and FAQs to double your Sudoku solving efficiency.
Solving Tips
How to Use "Guessing" in Sudoku? From Intuition to Logical Trial
Learn about guessing techniques in Sudoku: when to guess, how to guess efficiently. Master hypothesis testing, bifurcation, and other advanced techniques to make guessing a logical reasoning process.
Knowledge
History of Sudoku: From Latin Squares to Global Puzzle Phenomenon
Explore the complete history of Sudoku: from Euler's Latin squares in the 18th century, to modern Sudoku design by an American architect, to Japanese naming and promotion. Learn how Sudoku became the world's most popular logic puzzle.