Himitsu Bako 4 isn't just a box puzzle: it's a test of endurance, logic, and precision. Designed for expert solvers, this compact puzzle hides a surprising 90-step solution, making it the most challenging installment in the entire Himitsu Bako series. Following in the tradition of classic Japanese puzzles, Himitsu Bako 4 relies on a sophisticated system of hidden sliding panels that must be guided through four blind interior mazes. Every move counts. A mistake can set you back several steps, forcing you to rethink your entire strategy. Despite its relatively small size, this puzzle is a true beast. The exterior features intricate maze-like patterns that not only hint at the complexity of the contents but also make the box visually striking, even in a single color. It's a puzzle that looks as good as it is to solve. This is a puzzle box designed for true puzzle connoisseurs, those who enjoy long, methodical solutions and value ingenious interior design over quick wins.

The goal of the puzzle is to open the box.