- 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

### Classic Sudoku - The puzzle bank has been reorganized, sorted by a combination of "difficulty level" and "solution steps," containing a total of 90 × 1000 = 90,000 Sudoku puzzles. - Added 22 advanced Sudoku techniques: Empty Rectangle, Group AIC, Discontinuous Cycles, Same Number Coloring, Different Number Coloring, Extended Rectangle, Array Short of One, Merged Array, Spanning Array, Block Array, Deadlock Array, Deadlock Triple Array, Pseudo Array, Firework Array, Balanced Array, ALS-W-Wing, ALS-XY-Wing, M-Wing, H-Wing, S-Wing, L-Wing, AHS-XZ - Added custom error detection methods: Answer Error Detection, Conflict Error Detection - Added automatic unique number output function - Added double cell value highlighting function, identical notes automatically display the same color - Expanded Sudoku technique tutorial levels, each technique now includes 10 examples. - Tips and tricks now include "Disable Tips" and "Help Me" functions. - Tips and tricks window now remembers location settings. - Optimized tips and tricks algorithm and speed. - In number priority mode, clicking a selected number again will deselect it. - In grid priority mode, clicking a selected grid again will deselect it. - Fixed several known issues. ### Other Updates - Added custom note thickness. - Added "Daily" dimension statistics to the statistics function. - Settings menu supports collapsing. - Added custom killer Sudoku. - Added directory categorization to "My Puzzles → Favorites". - Added "Beginner" difficulty level to Daily Sudoku.

- Classic Sudoku - Added an automatic chain clearing switch - Optimized chain drawing; adjacent notes are now connected using larger curves - Fixed the issue of accidental deletion of notes in Classic Sudoku - Daily Sudoku - Added weekly and daily calendars; improved page aesthetics - Added daily goals and status display - Supports viewing and playing past daily Sudoku puzzles - Killer Sudoku - Solver and collections now sum the remaining candidate numbers in the cage, not the entire cage - Added cage coloring function; cages can be colored. - Added custom cage color function - Fixed the issue of being unable to complete Killer Sudoku - My Puzzles - Added import function; supports file and link imports; supports Classic Sudoku and Killer Sudoku - Removed average clues and replaced with the number of solved puzzles - My Puzzle list is now the default directory view - My Puzzle directory now includes randomly generated puzzles - Others - Sudoku Challenge; independent progress for each difficulty level

- Classic Sudoku: - Added Chain Drawing Feature: - Basic Chains: Automatic substitution of strong and weak links. - Intra-Cell Chains: Chains can be drawn between candidate numbers within the same cell. - Chain Validation: Hints are provided to indicate valid chains. - Multiple Chains: Multiple chains can exist simultaneously. - Custom Colors: Users can customize the colors for [Normal Chains / Invalid Chains]. - Cross-Cell Chains: When a chain spans two or more cells situated along the same baseline, it is displayed as a curved line. - Rule Hints: When displaying rule hints, prerequisite candidate notes are temporarily auto-filled, regardless of whether the "One-Tap Notes" feature is enabled. - Sudoku Techniques: Display the count of available techniques within each category group. - New Sudoku Techniques Added: X-Chain, XY-Chain, AIC, Grouped X-Chain, Remote Pairs, Continuous Loops, ALS-XZ, ALS-Chain, XYZ-Wing. - Killer Sudoku: Added Color Marking feature. - Other: - The "Answer" button has been moved to the title bar. - Feature Prompts: Added a "Do not show again" option; these prompts can be restored via the Settings menu. - "My Puzzles": Added a custom folder management feature; long-pressing allows for batch moving of Sudoku puzzles. - Added Custom Note Size setting.

- Classic Sudoku: - Added a feature allowing quick number entry by double-clicking on a unique note. - A smarter hint system that only provides useful hints based on the current note. - Optimized w-wing text. - Fixed incorrect practice problems related to the cut-and-paste technique. - More detailed difficulty levels for Sudoku techniques. - Error detection: If an answer exists, it's marked as incorrect; if no answer exists, it's marked as incorrect based on row, column, or 3x3 repetition. - Added Sudoku techniques: Expanded fish types (Sowrdfish, Jellyfish, Finned X-wing, Finned Swordfish, Finned Jellyfish, Sashimi X-wing, Siamese X-wing, Franken X-wing, Mutant X-wing). - Killer Sudoku: - Added number priority/grid priority; number priority allows for quick highlighting. - Added the "[Keep Valid Subsets]" function to collections. - Fixed the issue of ghost subsets in collections.

Important Updates to "Classic Sudoku": - The in-game [Hint] function has been changed to [Tips and Tricks] (Important Update!!!!!!!!!) - Added Sudoku tricks (Unique Remainder, Intuitive Blocks, Cut and Fill, Explicit Pairs, Explicit Three-Arrays, Explicit Four-Arrays, Implicit Pairs, Implicit Three-Arrays, Implicit Four-Arrays, Unique Explicit Four-Arrays, X-Wing, Unique Rectangle, Unique Ring, XY-Wing, W-wing, Skyscraper, Double-Line Kite, Turbot) - Added tips and tricks priority settings Important Updates to "Killer Sudoku": - Killer Sudoku has added 60,000 datasets, including 30,000 unique solutions for Killer Sudoku and 30,000 multi-solution datasets for Master Killer Sudoku - Solver operation changed to [Remove Combinations] instead of [Remove Notes] - Solver added [Multi-Cage Summation] + [Multi-Cage Exclusion] - Solver records the [Exclusion Status] of candidate combinations, i.e., [Excluded/Not Excluded] Other Updates: - Added [Infinite Error] mode - Added [Sudoku Coordinates] display function - Added [Color Markers] and [Breathing Light] functions for Classic Sudoku - Added color marker settings in [Settings] - Added [Copy Sudoku Puzzle] for Classic Sudoku, which can be quickly imported when creating a Sudoku puzzle - Added note highlighting settings [Number Highlighting/Grid Highlighting] - Added sharing Sudoku (current puzzle/original puzzle) - Moved [Smart Hints] for Classic Sudoku to [Settings] - Optimized number highlighting, optimized the color difference between the same candidate number and the filled number - Fixed the issue in [Color Settings] where the color of the pre-filled number remained unchanged, only the color of the number to be filled changed.

- Updated the classic Sudoku dataset (all Sudoku puzzles have only one solution) - Updated the number of Sudoku puzzles: Total number is 61,600, including: Easy (16x100), Normal (30x1000), and Expert (30x1000) - Added automatic note cleanup function to Killer Sudoku - Fixed a bug where background music disappeared when entering numbers - Optimized the hint function for classic Sudoku - Fixed the issue of delayed saving when generating answers for custom puzzles

- 更改App图标 - 自定义数独增加自动生成答案 - 适配更多的屏幕和机型（iphone、ipad、ipadmini/双屏手机、iphoneSE(短屏手机)） - 主题跟随系统（深色/浅色） - 直观的设置页面，美化了UI（区分游戏设置和通用） - 输入模式[格子优先/数字优先] - 经典数独候选高亮移到设置中 - 去掉一键笔记实时计算，增加自动清理笔记功能（自动清除行、列、宫与该数字相同的笔记） - 快速完成（棋盘只剩下唯一候选数，自动完成） - 游戏音效(点击、输入、错误、消除、撤回) - 背景音乐默认值改为50%（为了不影响音效） - 每日数独增加[未完成/已完成]状态 - 自定义数独增加快速导入数独谜题

- 经典数独滑动手势增加触控范围 - 修复数字键盘剩余数量实时刷新问题

- Added background music function - Added forced portrait mode - In Killer Sudoku's bright mode, identical numbers will be brighter In Killer Sudoku's dark mode, the cage border will be brighter In Killer Sudoku, the selection state can be deselected when a single number is selected.

- 通用 - UI更新 - 增加每日数独 - 应用入口更改 - 收藏功能 - 行列宫颜色跟随主题色改变 - 数字颜色设置 (自定义数字颜色) - 游戏颜色设置（自定义棋盘颜色） - APP统计 - 范围统计[年、月、周] - 游戏的每条记录：用时、提示数、撤回、总时长、思考时长、最长思考、线索数 - 总统计项、游戏概览、用时分析、成就记录、游戏表现、辅助使用、难度分布 - 普通数独 - 增加快捷滑动输入 - 笔记模式下增加[多选/单选] 功能 - 笔记模式下增加[默认/添加/减去]功能 - 相同数字高亮改为默认功能 - 杀手数独（每个难度内置500个关卡） - 解算器（格子计算+组件计算） - 笔记（居中+九宫格） - 按钮行为 (默认/添加/减去) - 单选/多选(点击+滑动选中) - [单选/多选]模式下相同数字高亮

1. Save and exit function can save [button state] + [recorded notes] 2. Fixed the issue of note prompts being displayed in dark mode 3. Added version number to settings

1. Increased touch area for numbers in the selection area. 2. Eraser button can erase notes. 3. Added [Game Color Settings] to the settings page, allowing customization of game background color, game text color, and game border color.

1. Added a one-click note feature to enable/disable real-time calculations. 2. Hint function: Add corresponding number hints to notes. 3. Customizable colors for numbers in the selected area and on the board.

1.增大待選區數字 2.增加候選區高亮 3.增加智能填寫 4.增加AI智能提示 5.中等難度等級增加至30個 6.增加數獨顏色風格 7.修復部分bug

1. Increased game difficulty and difficulty levels 2. Smoothly increased difficulty, prompting users every 5 levels to decide whether to increase the difficulty 3. Added a "answer" button; click to view sample answers 4. Added a "hint" button for feedback 5. Enhanced some pages 6. Fixed some bugs 7. The app name changes based on the selected language version on your phone

1. Increased game difficulty and difficulty levels 2. Smoothly increased difficulty, prompting users every 5 levels to decide whether to increase the difficulty 3. Added an answer button; click to view sample answers 4. Added feedback for the hint button 5. Beautified some pages 6. Fixed some bugs

add somes bugs

Added ipad adaptation, thanks to bilibili @Oct_28 for the correction

add new bug fix old bug