The QiYi Kong Ming Lock Nine Connection is one of the designs of the traditional Kong Ming Lock series that focuses on the idea of interlocking pieces that hold only while correctly placed. Just by touching it you can tell there is a specific order behind the set, though it is not always obvious at first glance.

The goal is the usual one in this family: separate the elements, one by one, and then retrace the path in reverse to leave the puzzle as it was. Since it does not rely on turns or hidden internal mechanisms, everything needed to solve it can be seen directly on the pieces, and that is much of its appeal. Finding the first piece that comes out is often the small revelation moment of this type of puzzle.

It is made of ABS plastic with a silver metallic finish that gives it a look different from the typical wooden burr puzzle. The pieces maintain a firm and clean fit, without annoying tolerances, as is usual in QiYi models. The size is comfortable to handle with both hands and to hold while studying, and its weight is light enough to carry loose in a pocket or backpack.

It is an interesting option for those who have already tried some simple burr puzzle and want to take a step further within the same line, or for those looking for a different piece for their collection of mechanical puzzles. It also works as a curious gift because it combines a traditional concept with a modern presentation that fits well both on a desk and on a shelf with other objects.

Regarding care, it requires no lubrication or adjustments: just keep it assembled or leave the pieces separated if you prefer to solve it from scratch each time. If dust appears between the cuts, it cleans well with a soft cloth. It is one of those puzzles that age without problems.

• Nine Connection design of the Kong Ming Lock series
• Made of ABS plastic
• Silver metallic finish
• Disassembly and reassembly challenge without turns
• Interlocking pieces with firm fit

• QiYi Kong Ming Lock series
• Nine Connection design with interlocking pieces
• Quality ABS plastic
• Silver metallic finish
• No magnetic mechanism