Wavelinks is the incredible fifth puzzle by Craighill.
Designed by Rod Bogart there are four steel pieces, two silver and two black which you must try and connect in two interlocking donuts.
The pieces connect together in a wave like fashion and the movement as they slide over each other is very fluid. Trying to find the right solution though is fairly tricky. Once you do it is such an elegant assembly that it leaves you in wonder!
Wavelinks can be solved in two separate ways, either a solid silver and solid black ring connected or two alternating rings.
Pleasingly heavy the full puzzle weighs 590g and measures roughly 760 x 570 x 570mm.
The solution is provided.