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Fragmentation version of the Big Stingray puzzle. It allows more turns than the doctrinaire puzzle.
IRT V1 F1 is a variant of Big Stingray with added cuts on the quadrilateral faces. It is based on the same axis system as DIRT V1.0, though the cuts on quadrilateral faces are essentially different.
The axis system itself is a hybrid of the corner and edge turning dodecahedron. Unlike the DIRT V1.0 and Big Stingray what are supposed to be the edge turns allow for 90° turns.
Thank you to the following people for their assistance in helping collect the information on this page: antony burt.
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