What is the Xiangqi - Chinese Chess - Co Tuong game, how does it work?

According to the introduction of vndynapp, Xiangqi - Chinese Chess - Co Tuong is a Puzzle game on the Android platform. There is currently a 2.8.1 version released on Mar 13, 2020, you can see the details below.

A best Chinese Chess game (also called Xiangqi) with these features:
- Game Mode:Bluetooth, Darkchess (Co Up), One Player, Two Player, Puzzle, How to solve Puzzle, Create chess position Mode
- Smart AI with 10 levels from easy to hardest level and can play either color.
- English - En, Vietnamese - Vi
- Auto save and load
- Export to GIF
- Save and Load Match from file
- Redo after Undo
- Support Western Piece

This app require these permissions:
- ACCESS_COARSE_LOCATION, ACCESS_FINE_LOCATION: -> user for Bluetooth scan because release of Android called 6.0 - Marshmallow, Bluetooth scan requires permission from Location group.
- BLUETOOTH, BLUETOOTH_ADMIN -> For play over Bluetooth
WRITE_EXTERNAL_STORAGE permissions -> For save Match data to file

What's new in version 2.8.1 Fix bugs