1.Interface optimization 2.Introduced solving techniques: Tridagons, Multi-Coloring

1. Introduce master solving techniques: ALS, Web 2. Add completion share feature

1. Add coloring operation 2. Add sudoku import function 3. Fix some bugs

1.Optimized forcing chain algorithm 2.Fixed hint bugs in step-by-step hint and reasoning modes

1.Added step-by-step hint feature 2.Optimized multiple solutions hint feature 3.Added Sudoku community - interested players can join our Discord to chat and share tips! 4.Fixed bug where time could not be remembered

1.Optimized forcing chain solving method 2.Introduced new solving technique: SK Loop 3.UI improvements and bug fixes 4.Added restore and clear draft function buttons

Fixed a critical bug. Please update the game.

1. Add tutorial mode 2. Expand the puzzle database 3. User interface improvements

1.Optimize the unique rectangle solution method to improve solving rate, current local puzzle database has achieved 100% solving rate 2.Introduce new solving technique: Bi-value Universal Grave (BUG) elimination method 3.Support multiple solution hint functionality

1.Renamed bicolor chains and tricolor chains to cell forcing chains 2.Optimized forcing chain solutions, greatly improving solve rate 3.Introduced new solving technique: WXYZ-Wing、Unit Foring Chains 4.Added support for modifying sound effects 5.UI optimization 6.Fixed some bugs

1.Fix prompt bug in custom mode under certain conditions

1.iPad landscape mode support 2.Added difficulty rating in custom mode 3.Fixed bug where music couldn't play within the app 4.Performance optimization

1.Add timer functionality 2.Add locking feature to my question bank

1. Expand the sudoku puzzle collection 2. Improve combination chain solution scenarios

Add global leaderboard functionality

fix some bugs

1.Local Sudoku Visualization 2.Add Statistical Functions 3.Performance Optimization 4.Interface Optimization 5.Support gesture-based navigation

1.Add reasoning mode

1.Add tricolor chain solving method 2.Add dark mode 3.Optimize interface

Optimizing the bicolor chain solution method

1.Added Bicolor Chain solving technique, significantly improving the solving rate 2.Automatic validation of Sudoku legality in custom mode 3.Optimized hidden pairs solving technique 4.Ability to undo entered numbers in normal mode

1.Add new solution：Swordfish、Jellyfish 2.Expand skyscraper situation 3.Fix bugs in certain scenarios of XY chain

1.Introduce xy-chain solving method to greatly improve Sudoku solution rate. 2.Add screen magnification function for iPhone.

Fix the bug where clicking the settings button sometimes doesn't work

1.Added "My Sudoku" feature 2.Improved solving speed when clicking the answer button 3.fix some bugs