Reversi (also known as Othello) is a very challenging board game for all ages.The rules of Reversi are much simpler than any other board games.However, easy to learn doesn't mean easy to play well.It offers so many strategic possibilities, that you can spend the rest of your life to master it.Ultima Reversi Pro is a professional version of Ultima Reversi, having many great features to customize the game and make it more interesting.Challenge your strategic skills with Ultima Reversi Pro!===== FEATURES =====* No Ads.* 1-player mode (Human vs CPU).* 2-players mode (Human vs Human).* Watching mode (CPU vs CPU).* 10 levels of difficulty.* Extremely strong AI at higher levels.* Various board size (4x4, 5x5, 6x6, 7x7, 8x8, 9x9, 10x10).* Various board color (Green, Blue, Red, Yellow, Brown, Silver, Gray).* Various rules (Normal mode, Negative mode, Revolution mode).* Unlimited undo function.* Cool graphics and sound effects.* Sound on/off switch.* Support tablet size devices.===== REVERSI RULES =====* The game begins with each player having two stones.* The players alternate turns, each adding an additional stone to the board.* A valid move must capture at least one of the opponent's stones. This is done by surrounding it, either vertically, horizontally, or diagonally (or a combination of all three). When this occurs, the opponent's stones that you have surround become yours.* If one player cannot make a valid move, play passes back to the other player. Ultima Reversi has an "Auto Pass" feature that automatically passes your turn if you have no other move available and must pass.* The game is over when the entire board is filled or when no side can make a valid move.* The winner of the game is the one with the most stones when the game is over.NOTES: Ultima Reversi Pro has an "Auto Pass" feature that automatically passes your turn if you have no other move available and must pass.