Great! Best chess program I have probably used. Tried using it against Ubisoft's Chessmaster on a AMD A8-6600K (Quad-Core 3.9GHz) with 8GB RAM and It won everytime. It even won all online games that I've tried. I still havent tried it against stockfish on PC tough. The apps analysis mode is great  though I don't like playing againt it. The Strength percentage doesn't really tell much about the difficulty. Automatic strength adjustment should do if its difficult to implement the ELO rating system.
May 18 2015