What is VortexSudoku?
VortexSudoku is QuizVortex's free daily Sudoku game available in Easy, Medium, and Hard difficulty. Every day a new puzzle is generated. Classic rules apply: fill each row, column and 3×3 box with digits 1–9, each appearing exactly once.
How to Play Sudoku
Tap a cell to select it, then tap a number on the numpad. The Hint button reveals the correct number for the selected cell. Undo reverses your last move. You have 3 lives — each mistake costs one.
Tips for Beginners
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Scan Rows & Columns
Find cells where only one number can fit based on what's already in that row, column, and box.
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Use Candidates
Mentally note which numbers could go in each empty cell. Eliminate candidates as you fill in others.
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Start Easy
Always start with Easy difficulty to build confidence before moving to Medium and Hard.
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Practice Daily
A new puzzle every day means constant fresh practice. Daily Sudoku improves logical thinking over time.
Frequently Asked Questions
Is VortexSudoku free?▼
Yes, 100% free forever. No account or app download needed.
Does the puzzle change every day?▼
Yes! A new puzzle is generated every day at midnight. You can also tap New Puzzle for a random one anytime.
How many mistakes am I allowed?▼
You get 3 lives. Each wrong number placed costs one life.
Can I undo moves?▼
Yes, the Undo button steps back one move at a time.
Is VortexSudoku mobile-friendly?▼
Yes! The grid and numpad are optimized for touchscreens.
