Finally I got time to solve it: Magic Tile, Hemi-Dodecahedron, size-3, fact=
or=3D1.28848304015396.=20
This number is the sweet spot to make a Pyraminx Crystal, provided by Roice=
. This puzzle is a slice-only 6-color Pyraminx Crystal, or, a Pyraminx Crys=
tal in a projective plane.
It is easier than I thought. I solved 2C pieces first using a simple commut=
ator of two second-layer moves. Then 3C pieces were solved using a nested c=
ommutator, in the form [[A,B],C], where A, B, and C are second-layer moves.=
Towards the end I had to worry about mirroring 3C, and twisting a single 3=
C. But I've seen these issues in the Hemi-Megaminx, hence not so surprising=
.=20
Log file:
399 moves.
This is nothing compared with Andrey's solve on {6,3} factor 1.4. I would n=
ever try to solve that beast. Congrats, Andrey!