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.

It is really good. Needs some improvements with GUI. it's a bit confusing specially when I hit the back button then I can't find my FICS account and I reconnect.

This app has everything a chess player could ask for, as long as they aren't Gary Kasparov. It is FUN to play, and challenging to the layman, without all of the (sorry guys), named opening moves etc, (snore Zzz) . The engine can be adjusted to different strengths, and the graphics are okay, but they are the one thing that needs improvement. This game has NO ADS!! Which makes it a treasure. Hats off to the developer for a good app. I'm keeping it.

After update of Android 6.0.1 on my Samsung A6 tablet the board no longer fits the screen (only 6x8 fields) no matter what I do! Great before - now useless. Please fix asop.

Fischer Random, yay! Clicking Install UCI Engine without any engines will delete all games. And then I found the export games to SD card, boo!

Guys if u wanna learn and play blindfold chess, this is the best app ever.