Small but smart chess game! Play for free! Extremely fun computer chess that is suitable for beginners and grandmaster alike. Chess is a game for two players that originated in the 6th century and gradually evolved into the form that is played today. It remains one of the world's most popular games. Chess X brings this great game to your iPhone. You can enjoy Chess in family game time, or you can also enjoy the game by playing with the AIs of varying difficulties. Beware that it is very challenging to beat the best AI in this game! You will also gain experience points by winning against the AIs (+1 for Easy, +3 for Medium, +5 for Hard, and +7 for Expert). Features - Daily Challenge - Global Leaderboard via Game Center - Share your chess games with friends - Undo - Save/load unfinished game - AIs with four levels of difficulties - Timer based game