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Sudoku
Difficulty:
Easy (40-45 clues)
Medium (30-35 clues)
Hard (25-30 clues)
Time: 00:00
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X
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Hint
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How to Play Sudoku
Goal:
Fill the 9x9 grid with digits 1-9
Rules:
Each row, column, and 3x3 box must contain all digits 1-9 exactly once
Given Numbers:
Some cells are pre-filled and cannot be changed
Input:
Click a cell to select it, then click a number or use keyboard (1-9)
Clear:
Use the X button or press Delete/Backspace
Validation:
Conflicts are highlighted in red
Strategy Tips:
Scanning:
Look for numbers that can only go in one place
Cross-hatching:
Check rows and columns for missing numbers
Box Analysis:
Focus on 3x3 boxes with many filled cells
Process of Elimination:
Mark possible numbers for each cell
Patterns:
Look for naked pairs, triples, and other advanced techniques
Features:
Hint:
Get help with the next logical move
Check:
Verify your current solution
Timer:
Track your solving speed
Difficulty:
Choose from Easy, Medium, or Hard puzzles