Well I beat Tumi 6 games to 0 but I could tell it still was the best AI I ever played in this game, if only because every other AI either moves at random or almost at random. A little suggestion, don't have it so eager to set down pieces that are on an edge that it will go for one away from a corner. Because then if I put a piece 4 away from that and then 2 away and then 1 away, or if I put a piece 3 away and then 1 away, then I get the corner.
I did run into a bug at one point, where it was the computer's move and it was refusing to move, and it made me click the square it was going to move and then we could proceed with the game.
Aside from that it's annoying having to pick a stupid avatar and the player selection was not self-explanatory and that was certainly buggy, for instance I couldn't be white unless I picked an avatar for myself from the list and it was not clear how to use it. But I guess it mostly works. The as of the time of this writing 10 year old reviews before me are complaining about the robot voice talking and the stupid techno music but you see that speaker icon in the lower right of your computer? You can mute it. I found the sounds unnecessary. An all right reversi/othello game. Room for improvement to be sure.