What is a chopin chain?
The chopin chain is a type of rope chain in which every slightly twisted link embraces two others:


(source. click to enlarge)

Depending on the thickness of the links, the character of the chain can seem a lot fuller:


(source. click to enlarge)



If google images is any indication, the most common type of rope chain, for comparison is the one that, not surprisingly, has the spiralling character of a regular rope:


(source. click to enlarge)

In the rope chain, every straight link embraces four others.
Here is a video demonstrating the making of such a chain.