This app has also a FREE Version with the same name. Search it on the store or visit https://metatransapps.com
This is the open source Bagatur Chess Engine with its own GUI (graphical user interface).
It is not as strong as Stockfish Komodo AlphaZero or Leela Chess Zero but is strong enough to beat a grandmaster.
It has 16 strength levels. From level 5 it could show the search information.
The ELO rating is about 3000 and the program has a unique playing style.
In general the application demonstrates an application of artificial intelligence (AI) into the domain of chess.
To clarify it is not an OEX chess engine and other chess engines cannot be imported into the GUI.

Playing instructions:
1. Check the menu and make sure the strength level is appropriate.
2. Select/deselect the Human/Computer buttons for both sides according to which side you want to play and whether you play against a computer or another person.
3. Use the flip board button to change sides if you play with black.
4. Move the piece by drag and drop or by selecting from/to squares.
5. If you want you could use the move navigation buttons to go back and forward in the move sequence.
6. It is recommended to check all settings in the menu and make sure you play with the option you like most (e.g. move animation speed chess pieces set colors).

Features:
1. FEN import/export/share.
2. Different modes: Human-Human Human-Bagatur Bagatur-Bagatur.
3. Different strengths levels.
4. The app could show the best moves line as well as the evaluation of the board position produced by Bagatur.
5. Navigation of played move's (first previous next last).
6. Flipboard function.
7. Moving by drag and drop as well as by selecting from and to squares.
8. Supports different color palettes and chess pieces sets for different tastes.

Permissions:
The free version of the app uses ACCESS_NETWORK_STATE and INTERNET permissions because it shows ads.

Your feedback and/or review is more than welcome.

https://metatransapps.com/bagatur-chess-engine-with-gui-chess-ai/