4 stars: Great game!!! It is really perfect, and the online mode is great because you can play with both friends and random players. The challenges are really helpful too because they help you improve your skills! I would like to see a mode were the game lets you make mistakes, because you can't make one and that way it is more easy for a starter to win without understanding why he won.
5 stars: Good chess app, have only played the first four computer levels and the engine is weak so far, but that's less demoralising for beginners who have a chance to win. I don't know how many levels there are, but I imagine the higher levels will be much stronger. The online option is very good for a quick, time controlled game with a random opponent. Nice clear graphics.
3 stars: The game has a nice set up and is good to play. However, apparently the designer doesn't know the chess rules very well, because the computer executed long castling after having already moved the king. Castling can only be done if the king hasn't been moved. Also, the computer doesn't always accept my castling move. Because of that I'm giving only 3 stars for now
4 stars: Best one I've been able to find when it comes to being able to play with other people online. This one has minimal lag when playing people overseas, so that's a big plus. I wish chats were turned on all the time but you can only chat when its your turn to move. I also really like the fact that you only get 1 minute to move. Speeds up ...