Sudoku Strategies
Short, friendly guides to help you solve with confidence.
Beginner
Scanning: The First Habit of Every Solver
Learn cross-hatching, the quickest way to find easy placements in any Sudoku.
BeginnerNaked Singles and Hidden Singles
Two ways a cell can only hold one number — and how to spot them quickly.
IntermediateNaked Pairs: Clearing the Fog
When two cells share the same two candidates, you can clean up the rest of the unit.
IntermediatePointing Pairs and Box-Line Reduction
Use the interaction between boxes and lines to eliminate candidates.
AdvancedX-Wing Basics
A classic advanced pattern that makes expert puzzles feel approachable.