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A 2x2x2 with 6 rings with 12 segments each.
This is not the first puzzle which fuses a 2x2x2 with additional layers of Square-1-pieces. The first was presented by Oliver Polspoel during the Dutch Cube Day 2008. Olivers creation used the original configuration of Square-1 which consists of 4 small and 4 twice as big segments.
Li Chung Man has not only reinvented this puzzle but also used uniformly shapes segments.
Originally presented under the name "Pipe Connector" different stickers it is now known as "Time Machine". He made several versions of it. The images #1-#3 show the version of september 2011 with the stickers that became the creators trademark.
Images #5 shows a transparent version presented in December 2013.
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Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann, Lawrence Cuthbert.
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