Chess at Google Play market analyse

A well designed chess app with a lot of powerful features.Features:- Play as white or black, against the computer or a friend.- 10 difficulty levels, from novice to grandmaster.- Include more than 38000 chess puzzles, divided into 13 collections.- Support online gameplay.- Support LAN game via bluetooth/Wi-Fi.- Computer hint and unlimited undo for beginners.- Changeable chessboards and piece sets, 2D/3D piece styles.- Load and save games to PGN files.- Autosaving your current game.- Setup position, intelligent validity check.- Randomly go to any point in the current game.- Provide thousands of classic chess games to download, such as grandmaster games, world championship games.- Switch to play mode when in view mode, analyze the game, and then restore the view status.- More functions: handicap, view move list, automatic move playback, etc.- It is free!