Sudoku Guides

Longer reads on strategy, habits and the thinking behind the puzzle.

• How to Get Faster at Sudoku: 10 Practical HabitsGet faster at Sudoku with 10 habits: fixed scans, Naked Singles, clean pencil marks, timed practice, and honest review—without reckless guessing.
• Sudoku Difficulty Levels Explained: What Makes a Puzzle HardSudoku difficulty is about required techniques and candidate depth, not clue count alone. What easy, medium, hard, and expert ratings really mean.
• The Complete Guide to Pencil Marks (Sudoku Notes)How Sudoku pencil marks (candidates) work: when to note, how to keep them accurate, and how notes unlock singles, pairs, and advanced eliminations.
• 7 Common Sudoku Mistakes and How to Avoid ThemAvoid 7 common Sudoku mistakes: partial constraint checks, stale candidates, early guessing, skipped basics, and weak post-game review habits.
• Is Sudoku Good for Your Brain? What Research Actually SaysIs Sudoku good for your brain? A careful look at what studies suggest about puzzles, attention, cognitive lifestyle, and claims that go too far.