Sudoku.city: Classic Puzzle

Sudoku.city is a fully-featured sudoku puzzle app with an extensive collection of unique number puzzles, daily challenges, and clever hints designed to teach you genuine solving techniques.

Whether you're a complete beginner or a seasoned sudoku enthusiast, Sudoku.city delivers a personalised brain training experience across 5 difficulty levels — from gentle introductory puzzles to fiendishly tricky expert-level grids that will thoroughly test your logical reasoning.

EXTENSIVE PUZZLE LIBRARY

Enjoy unique sudoku grids with fresh content added on a regular basis. Every puzzle is carefully crafted to provide a satisfying and fair solving experience, whatever your ability.

5 DIFFICULTY LEVELS

• Beginner: Learn the rules and fundamentals of sudoku

• Easy: Relaxing grids for your daily mental workout

• Medium: A well-balanced challenge for regular solvers

• Hard: Put your advanced logic and sudoku strategies to the test

• Expert: The ultimate trial for sudoku masters

DAILY SUDOKU CHALLENGE

Tackle a brand-new sudoku puzzle each day! Keep track of your streaks, collect medals, and challenge yourself to improve. Gather monthly trophies and review your progress on the challenge calendar.

CLEVER HINTS THAT TEACH

Our hint system doesn't simply hand you the answer — it walks you through real sudoku solving techniques step by step:

• Last Empty Cell & Last Remaining Cell methods

• Naked Single technique

• Clear visual explanations highlighting rows, columns, and boxes

MONITOR YOUR PROGRESS

• Detailed statistics for every difficulty level

• Personal best times, win rates, and accuracy

• 8 unique achievements to unlock (Speed King, Perfect Game)

• Monthly trophy collection for daily challenge streaks

FEATURES YOU'LL LOVE

• Notes and pencil marks for candidate numbers

• Unlimited Undo during gameplay

• Dynamic scoring with combo multipliers

• Clean, modern design with Light and Dark themes

• Sound effects and haptic feedback

MULTILINGUAL SUPPORT

Play sudoku in your preferred language! Sudoku.city supports English, Korean, Japanese, Chinese, Spanish, French, German, Italian, Russian, and over 20 languages worldwide.

PRIVACY FIRST

Jump straight in — no sign-up or login needed. Your progress is stored locally on your device. We respect your privacy with absolutely no unnecessary tracking.

Download Sudoku.city today and begin your daily brain training with our logic-based number puzzle game!