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Sudoku — Free Daily Puzzle
A new sudoku puzzle every day in 5 difficulty levels. Hints, timer, streak tracking.
How to play Sudoku
1
Pick a difficulty: Easy, Medium, Hard, Expert, or Master
2
Click an empty cell, then click a number 1-9 to fill it
3
Each row, column, and 3×3 box must contain digits 1-9 with no repeats
4
Use hints sparingly — they consume your hint allowance for the day
Tips & strategy
- Start by scanning rows and columns for cells where only one digit fits
- Pencil-mark candidates in cells with 2-3 possibilities to spot pairs
- Look for naked singles (cells with only one possible digit)
- Then look for hidden singles (digits that can only go in one cell of a row/col/box)
- Build a daily streak — playing every day improves intuition fastest
Frequently asked questions
How do I solve sudoku?
Use logic, not guessing. Every solvable puzzle has exactly one valid completion. Scan for cells where only one digit fits, then move to harder techniques like pairs and hidden singles for tougher puzzles.
What's the difference between difficulty levels?
Easier puzzles have more given digits and require only basic scanning. Expert and Master puzzles need advanced techniques like X-Wing, Swordfish, and chains — but every puzzle is fully logically solvable.
Can I use hints?
Yes — limited hints are available per puzzle. Each hint reveals one correct digit. Use them when truly stuck, not as a shortcut, or you won't build solving skill.