Sudoku Difficulty Levels
Choose the amount of deduction that suits you. Every level uses the same classic 9×9 rules, while the starting clues and logical path become more demanding.
Choose Your Level
50 puzzles
Easy Sudoku
Easy Sudoku has more starting numbers and a clearer path through the grid, making it a relaxed way to learn or warm up.
Play Easy →30 puzzles
Medium Sudoku
Medium Sudoku gives you fewer obvious placements, so progress comes from tracking candidates and combining clues across the grid.
Play Medium →25 puzzles
Hard Sudoku
Hard Sudoku has fewer direct clues and requires longer chains of deduction before a number can be placed with confidence.
Play Hard →What Changes by Difficulty?
All puzzles have one verified solution. The practical difference is how often a placement is immediately visible and how many candidate eliminations you need to connect before the next move appears.
Easy
Scan one row, column, or 3×3 box at a time. Fill certain placements first, then repeat the scan as new numbers open up.
Medium
Start with singles, add pencil marks when the grid slows down, and compare candidate positions within each row, column, and box.
Hard
Build accurate candidate lists, recheck interactions between boxes and lines, and avoid guessing when a pattern can eliminate options.