Rotate © 1980 Cursor Group, The
This program utilizes the 'Plastic Puzzle' (CURSOR Feb 80) concept and moves it light years in complexity.
It's actually not the typical 15 puzzle. All of the squares in the 4x4 grid are filled with letters. Enter a letter that's not on the far right or bottom. The 2x2 square with that letter in the upper left will rotate clockwise.
Published in CURSOR 1, no. 3 (March 1980): 22-23.