汇中智慧供水

Train your brain with a clean and modern Sudoku. Choose how you play: relax in Free Mode with endless puzzles or push yourself in Challenge Mode, clearing carefully designed levels one by one.
No account is required and no personal data is collected. The game supports multiple languages and works fully offline once installed. Ads appear in the free version, and a single in app purchase removes them permanently on your device.
Free Mode
Solve unlimited puzzles at your own pace. Pick a difficulty, undo mistakes, and use hints when you are stuck.
Challenge Mode
Work through a structured path of stages. Each stage brings a fresh set of puzzles and increasing difficulty. Track your progress and try to beat your best times.
Helpful Tools
Smart hint system explains the next logical move instead of giving the answer directly. Undo and redo let you experiment. Notes mode helps you mark candidates in each cell. Error highlighting can be toggled on or off.
Accessibility and Convenience
Multiple language support. Adjustable input methods for one handed or two handed play. Light and dark themes. Offline play. Small download size and fast startup.
Fair Monetization
Banner and interstitial ads are shown in the free version. One optional purchase removes all ads. No loot boxes, no subscriptions, no personal tracking.
Whether you have a minute or an hour, Sudoku fits your schedule. Sharpen logic, relax your mind, and enjoy a classic puzzle done right.