Happy Sudoku-Sudoku Game

About this app

Happy Sudoku is an intelligent Sudoku game developed with Flutter, combining AI technology with innovative level design. The game features a dynamic infinite-scrolling level selection system, providing players with a unique gaming experience. #### Core Features 1. **Innovative Level System** * **Dynamic Level Path**: Programmatically generated infinite scrolling curve path for level display * **Stage-based Layout**: Levels divided into multiple stages, each containing a fixed number of levels * **Smart Loading**: Lazy loading technology for optimized performance and memory usage * **Smooth Experience**: Intelligent scroll monitoring and preloading mechanism * **Visual Feedback**: Current level highlighting, clear stage separation, and special character display 2. **Smart Game Features** * **AI Hint System**: Intelligent analysis of solving strategies * **Note Mode**: Support for candidate number recording in cells * **Highlight Hints**: Highlight same numbers for assistance * **Error Detection**: Real-time input error detection * **Undo Function**: Support for undoing previous moves 3. **Game Interface** * **Professional Sudoku Board**: 9x9 standard grid with clear 3x3 sub-grid division * **Smart Input System**: Bottom number pad supporting number input and note mode * **Visual Feedback**: Selected cell highlighting with related cells (row, column, box) highlighting * **Status Display**: Timer, error counter (heart display), game progress * **Theme Switching**: Multiple preset themes (green, blue, sakura, red, deep purple) 4. **Game Mechanics** * **Difficulty Levels**: From beginner to master level * **Progress Saving**: Independent save for each level * **Achievement System**: Record solving time and success rate * **Error Limit**: Maximum 3 errors allowed * **Haptic Feedback**: Operation vibration feedback 5. **Personalization** * **Theme Customization**: Multiple preset themes with real-time switching * **Haptic Settings**: Customizable vibration feedback * **Interface Optimization**: Dark mode support, customizable font size * **Operation Habits**: Customizable gestures and operation methods * **Multilingual**: Support for 18 languages 6. **Technical Features** * **Performance Optimization**: Smooth gaming experience, low power consumption * **Offline Mode**: Full offline support * **Auto-save**: Real-time progress saving * **Data Security**: Secure user data storage * **Continuous Updates**: Regular feature optimization and content updates #### Usage Scenarios 1. **Daily Entertainment** * **Commute Time**: Solve puzzles during travel * **Relaxation**: Unwind after work or study * **Waiting Time**: Pass time while waiting * **Bedtime Relaxation**: Light game for better sleep * **Family Entertainment**: Suitable for all ages 2. **Learning and Training** * **Mathematical Thinking**: Develop logical reasoning * **Concentration**: Improve focus and attention * **Memory**: Exercise memory through puzzle solving * **Thinking Training**: Develop systematic thinking * **Stress Relief**: Relax through puzzle solving 3. **Professional Training** * **Sudoku Competition**: Preparation for competitions * **Brain Training**: Professional brain training tool * **Solving Techniques**: Learn advanced solving methods * **Speed Training**: Improve solving speed * **Difficulty Challenge**: Challenge high-difficulty puzzles

- Added new Sudoku variations: Diagonal, Window, Reverse King, Odd/Even, Thermometer, Reverse Knight, Discontinuous, XV, Dot, Arrow, Zigzag - Added Sudoku tricks: BUG+1, Avoidable Rectangle, Hidden Rectangle, Hidden Unique Rectangle, WXYZ-Wing, AHS-Chain - Added new variations to Daily Sudoku - Added trick hint candidate source settings (current note/real note) - Reorganized Sudoku trick examples - Reorganized the puzzle bank based on current note strategy - Killer Sudoku editor supports a wider range of data structures - Fixed an issue with incorrect L-Wing trick hint text - Fixed an issue with unclear Sudoku trick hint text for empty rectangles - Automatically filters out any characters other than numbers during data entry - Fixed an issue with the selected state when canceling multiple selection notes in Classic Sudoku - Changed Sudoku saving to real-time saving - Fixed known bugs

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1. First observed Aug 26, 2026 · 5:28 PM Free