This puzzle was developed by Erich Friedmann.
Puzzle and Goal
An unsolved puzzle consists of a square grid with star and circle clues to the top and side.
The goal is to place one star, gray circle (moons), and white circle (suns) in each rank.
The solved grid must satisfy the following conditions:
The clue indicates which object (the moon or sun) is closer to the star in the rank; if they're the same distance, the clue is a star.
Identical objects cannot appear in diagonally adjacent cells.