1. Classic Sudoku gameplay:
1.1 The rules are minimalist, with no repetition of numbers in each row, column, or 3x3 sub grid. The rules are simple but the strategies are infinite.
1.2 Dynamic Difficulty Adaptation: Intelligent algorithms adjust the difficulty of questions in real-time, from beginner to master, there is always a level that suits you.

2. Ladder difficulty:
Easy mode, medium mode, difficult mode, master mode, daily challenge;

3. Ability report:
Problem solving speed, accuracy, difficulty, clearance progress, and historical best records;