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Figure 5
3D-printed dissection puzzle of a set of four R hexagonal cells. (a) The 33 required pieces grouped and labelled by forms; (b) the assembled puzzle; (c) some pieces have been removed from the assembled puzzle to show the two extra lattice points of one of the R cells.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 53| Part 6| December 2020| Pages 1583-1592
https://doi.org/10.1107/S1600576720011772
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