From the instructions:
CHEOPS is a recreational and educational game of skill and logic for 1, 2, 3, or 4 players. CHEOPS I uses logic and the ability to recognize objects by their shape and feel. CHEOPS II combines logic and chance. CHEOPS III uses logic only.
4 playing boards
4 pyramids - each consisting of 9 tiles and 1 top
1 large pyramid
1 large pyramid base - the drawing board in CHEOPS II