Sudoku Classic – Soku

Soku is classic 9×9 Sudoku — free, focused, and made for your brain. Choose Easy, Medium, Hard, or Very Hard. Fill every row, column, and 3×3 box with the numbers 1 to 9. No repeats. Just logic. Play a quick puzzle on the train or settle in for a longer session. Soku stays out of the way so you can think. WHY SOKU • Classic Sudoku, nothing extra — a clean 9×9 grid • Four difficulty levels, from beginner to Very Hard • Hints when you get stuck • Undo and reset if you want a fresh start • Error tracking so you can learn from mistakes • On-screen timer to beat your own time • Completed-number tracker to see what is left • Dark Mode for late-night puzzles • Game Center leaderboards for each difficulty • Free to play on iPhone and iPad • Small download (about 7 MB) • No account. Puzzles are generated on your device HOW TO PLAY 1. Pick a difficulty. 2. Tap a cell, then tap a number. 3. Each digit from 1 to 9 can appear only once in its row, column, and 3×3 box. 4. Use a hint if you need a nudge — or play it pure. A CALM BRAIN GAME Sudoku is a number puzzle and a logic workout. A few minutes a day can sharpen focus and problem-solving. Soku is built for that habit: offline-friendly play, a readable board, and no sign-up wall. Soku includes optional ads to keep the game free. If you enjoy a quiet grid and a fair challenge, download Soku and start a puzzle today. If you like classic Sudoku, a rating or a short review helps other players find it. Thank you for playing.