SimpleABOthello app for iPhone and iPad

This is a simple and easy-use Othello Game.The strength of this game is pretty good.
The players are human-human, human-computer, computer-human and computer-computer. The strength of this game have eight levels. The more level is more strong. The difference of strength between levels is dependent on the depth of game tree search and each evaluation function. The time limit of each game is 10 minutes, 20 minutes, 30 minutes or 60 minutes. As display option, there are "Next moves output" and "Move number output". These option can use in the middle of game.
After players, computers level and time limit are set, each game begins by pushing of "Start" button. Default setting is human-computer, level 3 of the computer level and 20 minutes of the time limit. When human player has no moves in the middle of game, push "Pass" button in the according to the push "Pass" button message.
When the game was over or you want to restart the game, Push "New Game" button. Then the game return to the beginning on the same settings. And push "Start" button.