Online & Ready • 60 FPS • Low Latency
Puzzle
Developer: Howard Garns Homage
Sudoku Classic
The pure 9x9 logic puzzle where numbers 1 through 9 must never repeat.
Community Rating: 4.8 / 5.0 (240 votes)
📖 How to Play Sudoku Classic & Comprehensive Guide
Invented in 1979 and popularized globally in Japan, Sudoku is the quintessential numbers placement puzzle. Fill a 9x9 grid composed of nine 3x3 subgrids.
The Uniqueness Rule
Each row, column, and 3x3 nonet must contain all digits from 1 to 9 without repeating any number. No mathematical calculation is required—pure spatial logic solves every puzzle.
⌨️ Verified Controls & Keybindings
Input Digit into Selected Cell
Number Keys 1-9
Erase Entry
Backspace / Delete
Mobile Number Input
On-Screen Numpad
💡 Gameplay Strategy & Pro Tips
- • Look for rows or 3x3 boxes that already have 6 or 7 digits filled in.
- • Use cross-hatching to find where a specific digit can fit in a 3x3 block.
❓ Frequently Asked Questions About Sudoku Classic
Is math required to play Sudoku?
No arithmetic is involved; numbers are purely distinct symbols that could just as easily be 9 different letters or colors.
