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A cuboid which can be viewed as combination of 1x2x2 and 1x2x3.
Beginning with this cuboid all 1x2xN's can be solved by (first) solving the innermost 1x2x2 (or 1x1x2 if N=odd) and then solving the outer layers one by one like in a 1x2x3. This puzzle uses an Eastsheen 2x2x2 as core.
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
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