Sudoku Guides
From the rules to improving your skills, here's how to enjoy Sudoku even more.
Guides
The Complete Rules of Sudoku
The single rule for filling the 9×9 grid, plus the basic terms.
GuidesHow to Get Started as a Beginner
For anyone unsure where to find the first number.
GuidesScanning: Solving by Eye
How to confirm numbers quickly without notes.
GuidesHow to Use Notes (Pencil Marks)
Organize tough puzzles by writing down candidate numbers.
GuidesAn Efficient Solving Order
Which techniques to try, and in what order.
GuidesBuilding a Habit with the Daily Puzzle
A routine that wakes up your brain with one puzzle a day.
GuidesHow to Lower Your Completion Time
Practical tips for solving faster.
GuidesCommon Mistakes and How to Avoid Them
Traps that beginners often fall into.