The AI on this needs some work. I have noticed the following issue several times.
In a recent game I had points 6, 5, 4, & 2 covered in my home board and was bearing off. The computer had all its pieces in its home board on points 1, 2, & 3 except for two on point 1 in my home board. The computer rolled 5-2. It should have moved a piece from point 1 to point 3 and then to point 8. This would have left 1 piece uncovered on point 1 in my home board. Instead, the computer moved a piece 2 spaces in its home board and ended the turn. This type of movement has happened several times and every time it allows the computer to keep a point covered when it shouldn’t.
One other thing. The AI does generate rolls on the hard level that go against the odds. There was a game I should have won easily. I was bearing off and the computer still had 4 pieces it needed to get home. The computer’s next 4 rolls were 3 double sixes and a double 5. My rolls were no doubles with lots of 1’s, 2’s, & 3’s. Needless to say, I ended up losing. However, if you have any skill at backgammon even on hard and with the poor AI, you should be able to win 75 to 85 percent of the time. When it’s not cheating the AI makes some very poor moves even in Hard.
I’ve won enough against this app that, regardless of how good it looks, I’m going to try some other backgammon apps.