We're excited to bring you version 1.7.1 with exciting new features, performance enhancements, and gameplay improvements that make your Sudoku experience even better! **NEW: Odd-Even Sudoku Game Mode** Experience a fresh twist on classic Sudoku! We've added the highly requested Odd-Even Sudoku mode, bringing a new strategic challenge to your puzzle-solving sessions. This innovative mode adds an extra layer of logic to traditional Sudoku gameplay, requiring you to think about number parity alongside standard rules. In Odd-Even Sudoku, grey cells must contain even numbers (2, 4, 6, 8), while white cells contain odd numbers (1, 3, 5, 7, 9). The visual color coding helps you identify cell constraints at a glance, making it easier to spot patterns and solve puzzles strategically. This mode offers the perfect balance of challenge and accessibility. Full statistics tracking is available for Odd-Even mode, so you can monitor your progress and track your best times. **Daily Login Rewards** Build a daily solving habit and get rewarded! We've added a daily login system that tracks your consecutive login days and rewards you for your commitment. Log in every day to maintain your streak and earn rewards. **Keep Screen Awake Feature** Never lose your focus mid-puzzle! We've added an automatic screen-awake feature that keeps your device from going to sleep during gameplay. This is perfect for long solving sessions where you need uninterrupted concentration. Your screen will stay on automatically while you play, so you can focus entirely on the puzzle without worrying about your device timing out. **Visual & Performance Improvements** We've made significant enhancements to make your experience smoother and more polished. The visual feedback system has been completely overhauled with improved animations and transitions throughout the app. Every interaction now feels more responsive and refined, from cell selection to number placement. Grid rendering has been optimized with better cell update performance, resulting in smoother gameplay especially on larger puzzles. Color contrast and visibility have been improved across all game modes and themes, making it easier to distinguish between different cell types and game elements. **Gameplay Enhancements** We've fine-tuned the core gameplay experience based on your valuable feedback. The difficulty scoring algorithms have been refined for more accurate challenge assessment across all game modes, ensuring that each puzzle provides an appropriate level of difficulty. Input responsiveness has been enhanced with improved touch handling and cell selection, giving you more precise control over your moves. Game state management has been improved for better reliability, ensuring your progress is always saved correctly. The conflict checking and validation system has been enhanced for all game modes, providing more accurate error detection and feedback. These improvements work together to create a more fluid and enjoyable puzzle-solving experience. **Technical Optimizations** Under the hood, we've made numerous optimizations to improve overall app performance. Memory management has been enhanced, resulting in reduced battery consumption and smoother operation. Error handling and edge case management have been improved for better stability. This update represents our continued commitment to making Classic Sudoku Puzzle the best Sudoku experience available. Every feature has been carefully crafted with your feedback in mind, and we're constantly working to improve the app based on your suggestions. Thank you for being part of our Sudoku community! We hope you enjoy these improvements and the new Odd-Even mode. Keep solving, and stay sharp!

Performance & Stability • Improved app startup performance • Enhanced overall stability and responsiveness • Better memory management Bug Fixes • Resolved iOS app crash on launch • Fixed configuration file handling • Corrected app initialization issues Technical Improvements • Optimized build process and dependencies • Improved app architecture for better performance • Enhanced code optimization User Experience • Smoother gameplay experience • Faster app loading times • Improved overall responsiveness

**Major Update - Enhanced Sudoku Experience!** **NEW GAME MODES** We've expanded your Sudoku universe with exciting new variations: • Mini 6x6 Sudoku - Perfect for quick brain workouts and beginners • Giant 16x16 Sudoku - The ultimate challenge for Sudoku masters • Cage Sudoku - Combine arithmetic with logic using sum constraints • X-Sudoku - Diagonal constraints add an extra layer of complexity • Multi Sudoku - Solve interconnected grids simultaneously **ADVANCED NOTES MODE & HIGHLIGHTING** Revolutionize your solving strategy with our powerful new Notes system: • Add and remove potential numbers in any empty cell • Spot patterns and solve puzzles faster than ever before • Visual highlighting helps identify logical connections **UNLIMITED UNDO FEATURE** Never worry about mistakes again: • Undo any move with a simple tap • Complete move history tracking • Perfect for learning and experimenting with strategies • Maintains game integrity while allowing exploration **ENHANCED STATISTICS SYSTEM** Track your progress like never before: • Detailed statistics for each game mode separately • Best times and completion rates tracking • Average solving time calculations • Total games played and won across all modes • Watch your skills improve over time **PERFORMANCE OPTIMIZATIONS** • Significantly improved app startup time • Smoother grid interactions and animations • Reduced memory usage for better device performance • Enhanced stability across all supported devices • Optimized puzzle generation algorithms **BUG FIXES & IMPROVEMENTS** • Fixed rare crashes during puzzle generation • Resolved timer synchronization issues • Improved auto-save reliability • Fixed visual glitches in dark theme • Enhanced touch responsiveness on smaller screens • Corrected conflict detection in complex game modes • Improved hint system accuracy • Fixed statistics calculation errors • Resolved memory leaks during extended gameplay • Enhanced error handling throughout the app **USER INTERFACE ENHANCEMENTS** • Cleaner, more intuitive design • Better visual feedback for user actions • Improved accessibility features • Enhanced color contrast for better readability • Streamlined settings and options menu **ADDITIONAL IMPROVEMENTS** • Better hint system with smarter suggestions • Enhanced puzzle validation algorithms • Improved offline functionality • Better integration with device themes • Optimized for latest iOS version This update represents our commitment to providing the best Sudoku experience possible. We've listened to your feedback and implemented the most requested features while maintaining the clean, focused gameplay you love. Thank you for playing Sudoku Challenge!

This update is all about enhancing your gameplay and giving you more powerful tools to conquer any puzzle. We've listened to your feedback and are excited to introduce these new features and improvements: All-New "Notes" Mode & Highlighting Solving tough puzzles just got easier! We've added a dedicated "Notes" mode, a feature many of you have asked for. - Add & Remove Notes: Simply toggle the Notes button on the number pad to start jotting down potential numbers in any empty cell. - Smart Highlighting: Long-press any number on the pad while in Notes mode to instantly highlight every cell where you've jotted down that specific note. It's a great way to see patterns at a glance! - Auto-Clearing: Once you place a correct number, all notes in that cell are automatically cleared, keeping your board tidy. Redesigned Controls & User Interface We've completely revamped key parts of the interface for a more modern, intuitive, and comfortable experience on all devices. - New Number Pad Layout: The number pad now features a smart layout that adapts to your screen. Phones get a compact 6x2 grid for easy one-handed play, while tablets and landscape mode feature a classic 3x3 grid with a dedicated action row below. - Revamped Win Screen: The screen that appears after you solve a puzzle has been redesigned. Your game stats (Time, Errors, Difficulty) are now presented in a clean, vertical list with clear icons, making it easier to review your performance. Bug Fixes & Stability Improvements - We fixed a crucial bug where notes in a cell were sometimes deleted incorrectly if a wrong number was entered. Your notes are now safe until you place the correct number! - General stability improvements and minor UI tweaks to make the app run smoother than ever. We're committed to making this the best Sudoku app on the store. Thank you for your continued support and feedback! :)

What's new: - **New Levels Added:** We've expanded our puzzle library with a fresh set of challenging new Sudoku boards for all difficulty levels. - **Bug Fixes & Stability:** We've squashed several bugs and improved overall app performance for a more stable and seamless experience. - **Performance Enhancements:** Enjoy faster loading times and a more responsive interface. Get ready for an even better Sudoku experience! In this version, we've focused on bringing you more fun and a smoother gameplay. Thank you for playing! Don't forget to rate us on the App Store.

We're excited to bring you version 1.1.1 with fantastic new features that enhance your Sudoku experience: Enhanced User Experience: - Improved modal designs with better button layouts - Cleaner, more intuitive interface elements - Optimized performance for smoother gameplay Bug Fixes & Improvements: - Fixed minor UI inconsistencies - Enhanced stability across all difficulty levels - Better hint system reliability - Improved dark mode compatibility Perfect for Everyone: Whether you're a Sudoku beginner looking to learn or an expert seeking a challenge, our app provides the perfect puzzle experience. The intuitive interface makes it easy to jump right in, while advanced features keep experienced players engaged. Your Privacy Matters: We respect your privacy and only collect essential data to improve your gaming experience. No unnecessary permissions or intrusive ads. Thank you for choosing Classic Sudoku. We hope you enjoy the new features and continue to have fun solving puzzles. Your feedback helps us make the app even better!

We're excited to bring you version 1.1.0 with fantastic new features that enhance your Sudoku experience: Enhanced User Experience: - Improved modal designs with better button layouts - Cleaner, more intuitive interface elements - Optimized performance for smoother gameplay Bug Fixes & Improvements: - Fixed minor UI inconsistencies - Enhanced stability across all difficulty levels - Better hint system reliability - Improved dark mode compatibility New Rate Us Feature: - Added a friendly rating prompt after your first completed game - Rate the app and earn 5 bonus hints as a thank you - Easy access to rating from the Settings menu Perfect for Everyone: Whether you're a Sudoku beginner looking to learn or an expert seeking a challenge, our app provides the perfect puzzle experience. The intuitive interface makes it easy to jump right in, while advanced features keep experienced players engaged. Your Privacy Matters: We respect your privacy and only collect essential data to improve your gaming experience. No unnecessary permissions or intrusive ads. Thank you for choosing Classic Sudoku. We hope you enjoy the new features and continue to have fun solving puzzles. Your feedback helps us make the app even better!