Expert guides, strategy breakdowns, and puzzle news.
The Sudoku Index Blog covers everything from beginner foundations to expert-level solving techniques, variant guides, brain health research, and the history behind one of the world's most popular logic puzzles. Every article is written by experienced solvers for solvers — practical, jargon-aware, and genuinely useful whether you're picking up a grid for the first time or competing in international tournaments.
Everything you need to go from total beginner to confident solver — rules, techniques, and common mistakes to avoid.
HistoryFrom Euler's Latin Squares to Wayne Gould and The Times — the full story of how Sudoku conquered the world.
HealthWhat cognitive science actually says about logic puzzles, memory, and mental fitness.
GuideHow to evaluate Sudoku apps beyond star ratings — what actually matters for a quality solving experience.
VariantsKiller, X, Jigsaw, Samurai, Hyper and more — which variants to try first and why they make you a better classic solver too.
Myth BustingCommon misconceptions about how Sudoku should be solved — and the truth that will immediately improve your game.
WellnessWhy the best puzzle sessions feel meditative — and how to cultivate that state of deep focus deliberately.
GuideX-Wings, Swordfish, Skyscrapers and more — the advanced patterns that unlock any Hard or Expert puzzle.
WellnessWhy Sudoku is one of the best activities for older adults — cognitive benefits, accessibility tips, and the best resources to start with.
Explore our full knowledge base: How to Play, Advanced Techniques, Cheat Sheet, Glossary, Practice Routine, and Killer Sudoku Guide. Or browse the full directory of 100+ curated Sudoku sites.