Piegram

PIEGRAM is not a pie chart graphing program; it is a "hide and seek" game where you and the PET take turns taking shots at each other as you move around a 10x10 grid. For each shot you take, the computer reports the distance to the target of your three most recent shots. If you have a good handle on the Pythagorean theorem, you should be able to zero in on your quarry efficiently. The computer isn't especially smart either. I was sure it had me cornered at one point—two shots in a row landed 1 square diagonally adjacent to my position but the PET failed to take advantage of that information.