The words "cube" and "puzzle" bring to mind the Rubik's Cube, so a simple eight-piece puzzle like the Koishi Pebble Cube Puzzle might seem like too easy to bother trying. How hard could it be to put together eight pieces, right? Well, pretty hard, actually! The makers of the puzzle have done something simple yet ingenious: they have cut the pieces into asymmetrical shapes, so there's only one correct way to fit them together!
The Koishi Pebble Cube Puzzle is indeed like a Rubik's Cube in that there's only one correct solution. The difference here is that there's no single formula to get there: you have to probe carefully, taking each piece and trying it against the others from every possible angle until you get the right fit. And then do that again and again until every piece is in place and the finally cube shape appears. Think your puzzle-solving skills are up to the task? Have a go at this 40 x 40 x 40 mm (1.5 x 1.5 x 1.5") cube and find out!
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