How to Play Sudoku
Sudoku is a logic-based number placement puzzle. The objective is incredibly simple yet infinitely deep: fill the 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids that compose the grid contain all of the digits from 1 to 9.
Getting Started
You don't need to be a math genius to play Sudoku—it strictly relies on logic and deduction. Start by scanning the board for rows, columns, or 3x3 boxes that already have a large number of given clues. The more numbers already present, the easier it is to figure out which numbers are missing.
We recommend familiarizing yourself with the exact Sudoku Rules before starting your first game.
Mastering Voku's Interface
How Notes Work
As puzzles get harder, you will find empty cells where multiple digits could fit. Voku features a powerful Notes mode. Toggle it on to pencil in multiple candidate numbers inside a single cell. Voku features "Smart Notes" which automatically erase pencil marks from surrounding cells once you confidently place a solid number.
How Hints Work
Stuck on a tricky board? Voku provides a limited number of hints per game. When activated, a hint will safely reveal the mathematically correct number for a random empty cell, allowing you to break logic deadlocks. Use them sparingly!
Frequently Asked Questions
Do I have to guess?
Never. A properly generated Sudoku puzzle always has exactly one unique solution strictly achievable through logic. Voku mathematically guarantees every board is uniquely solvable.
What is the best way to start?
Beginners should start with Easy Sudoku puzzles. Focus on finding "naked singles"—cells where only one digit can possibly go based on the intersecting row, column, and box.
Ready to play?
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