A ball was sitting directly in front of corner pocket. I shot at the 8 ball to move the ball out of the way, the 8 ball went right thru the ball in front of the pocket with absolutely NO CONTACT made. of coarse I didn't move the ball, but on the computers time to shoot - the computer did t the same thing - a wayward ball made no contact - but it went thru the ball. Then when it was time for the computer to shoot at the ball in the corner pocket and it made it. For a ball that no other ball could touch it - all of a sudden became real ball for the COMPUTER to make!