The Smart Egg Black Dragon is a 2-layered labyrinth puzzle. The goal of the puzzle is to guide a rod (provided) through the maze. This particular puzzle is more challenging because it features a visible, outer maze, and also a hidden inner maze that must also be navigated to successfully complete the puzzle.

The Blue Dragon is the first puzzle in the 2-layered labyrinth series. The Red Dragon is even more challenging, and the Black Dragon is the most challenging.