Game features:
1. Intelligent AI battle system
2. 3 difficulty levels, from "novice" to "master"
3. Adaptive AI, dynamically adjust the difficulty according to the player's level
4. Support undo function
5. More than 1,000 classic endgame challenges
6. Real-time move prompts
7. Completely offline operation, zero network permissions
8. Extremely low memory usage, power saving optimization

This game strictly follows the following principles:
1. No user personal information is collected
2. No sensitive permissions are required
3. All data is stored only locally on the device