1. threatened squares: Displays the status of each piece on the board. A red square means that the piece is under attack and not sufficiently defended, or that it is being attacked by a piece of lesser value. This is usually a pretty serious danger signal and means you must take active measures to avoid losing a piece. Yellow means that the piece is under attack, but it is just sufficiently defended. You must be careful about removing any defending piece. Green means the piece has enemy contact but is well defended. Usually it is okay to remove a defending piece. 2. Engine vs Another Engine make it possible for two different chess engines to play with each other. its better than one engine vs itself
Simply worthless for analysis. After setting up position with the Edit Board function there's no way to return to main menu to analyze with engine. Uninstalling.
No way to set a position to analyse
Is there any option to add external engine ?
Horrible user interface
Can I play it without clock??
Added: request permissions for INTERNET, EXTERNAL-STORAGE and WAKE-LOCK.