Sudoku Classic: Number Puzzle

Sudoku Classic is the pure, clean sudoku game you have been looking for. No clutter, no pop-ups, no internet needed — just you, a 9x9 grid and your logic.

Every puzzle is generated fresh on your device and mathematically guaranteed to have exactly one solution. That means no guessing: every sudoku can be solved by reasoning alone.

🌟 WHY YOU'LL LOVE SUDOKU CLASSIC

🔸 Four Difficulty Levels
Easy, Medium, Hard and Expert. Start relaxed and work your way up to puzzles that will really make you think.

🔹 Unlimited Puzzles
A new sudoku is created every time you play — you will never see the same board twice. No puzzle packs to download, no levels to unlock.

🔸 Smart Helpers, Not Cheats
Pencil in candidate notes, undo any move, and use up to 3 hints per game when you get truly stuck. Notes are cleaned up automatically when you place a number.

🔹 Play Offline, Anywhere
No WiFi? No problem. Sudoku Classic is a fully offline puzzle game — perfect for travel, commutes, waiting rooms and coffee breaks.

🔸 Train Your Brain
Sudoku is proven brain training that actually feels like fun. Sharpen your logic, concentration and memory a few minutes at a time.

🧩 GAME FEATURES

● Classic 9x9 sudoku with 3x3 boxes
● 4 difficulty levels: Easy, Medium, Hard, Expert
● Every puzzle has a unique solution — solvable by logic, never by luck
● Pencil notes (candidates) with automatic cleanup
● Unlimited undo
● 3 hints per game
● Mistake counter — 3 mistakes and the run ends
● Timer with best time saved for each difficulty
● Row, column, box and same-number highlighting
● Auto-save: close the app any time and continue exactly where you left off
● Tiny download, no ads, no in-app purchases, no permissions
● Works completely offline

🎮 HOW TO PLAY

● Fill the grid so every row, every column and every 3x3 box contains the digits 1 to 9 exactly once
● Tap an empty cell, then tap a number
● Turn on NOTES to pencil in the candidates for a cell
● Use ERASE to clear a cell and UNDO to step back
● Correct numbers lock in place — three wrong numbers end the game
● Solve the whole grid to beat your best time

✨ TIPS FOR SUDOKU BEGINNERS

● Scan rows, columns and boxes for a digit that has only one place left
● Look for cells where only one candidate remains
● Use notes on Hard and Expert — they are almost impossible without them
● Fill the most crowded box first; it gives the most information
● When you are stuck, switch to another region instead of guessing

Whether you are looking for classic sudoku, number puzzles, brain games, logic puzzles or simply the best offline time killer, Sudoku Classic delivers endless puzzle fun in a clean, distraction-free package.

Download Sudoku Classic now and start solving!