Awful. Just awful.
It's a very simple concept, but if you're going to make hte computer player use LOGIC to play, thes no point in a human playing against it, as the only way the human could win is through pure luck. The computer uses the BEST possible move available, forces you to take the least amount of squares, and makes you open up a train of squares for him, as you can't PASS on your turn. When the board gets full, you'll see what I mean. I played five times, and the computer did the same thing every time.
To make this game FUN, which should be your goal, to be honest, you should make the computer player make HUMAN ERRORS. That's what creates a challenge.
I got very frustrated with the way the computer was playing. I'm not a bad loser at all. I learn from when I lose, but the computer just uses binary logic. "Is that the best move available? Yes / No. If yes, TAKE IT." It leaves the player feeling helpless, and unable to win, and therefore it is not fun. Please reprogram the computer's AI, and I'll be sure to pass your game around to my friends, and give you the vote you're capable of getting.
The graphics were simple, but effective. Very well laid out, functional, and easy to pick up. It's just the computer's AI that ruins it for me.