Dino cube flip one edge7/2/2023 ![]() Normally hidden facets appear as dark gray. The "tall" image on the right is an "exploded" diagram of the various blocks (listed above). 1 hidden "core" block (a regular octahedron) - it has 8 facets (each equilateral triangles) which are always hidden by the "axial" blocks.8 hidden "axial" blocks (regular tetrahedrons) - each has 4 hidden facets (all equilateral triangles): 3 of them are partially visible when twisting a corner, the other is always hidden (attached to the "core"). ![]() 12 visible "edge" blocks (irregular tetrahedrons) - each has 4 facets: 2 visible (colored) "wide" isosceles triangles and 2 normally hidden equilateral triangles (partially visible when twisting a corner).In geometric theory, the Dino Cube can be (de)constructed as: Perhaps not obvious, but extremely relevant for playing with this puzzle, is the fact that you can only twist the corners (all of Rubiks' Cubes are face-turning). Hopefully this is obvious from the photograph : each face is divided into isosceles triangles (and not squares). This corner-turning puzzle is one (of the two) on this page which is not a member of the Rubik's Cube family. However, I must note that the Professor's Cube (n=5) will often challenge players with "parity errors" even though it has fixed center blocks (because it also has "wing edges" and "non-middle centers" like the Rubik's Revenge). I believe this is because the centers give a "fixed" frame of reference for solving the puzzle. On the other hand, those puzzles which do have a center square on each face (n=3 for Rubik's Cube and n=5 for Professor's Cube), the so-called "odd-n" puzzles, are considered by many players to be easier. The Void Cube is technically an "odd-n" puzzle, but because the centers and core have been removed, it may also cause "parity errors". These tend to give many players problems with "parity errors" (most notoriously the Rubik's Revenge). All of them, except the Void Cube, are the so-called "even-n" puzzles. These are easy to visually identify because there is no center square (or other polygon) on any face. In summary, all the hexahedron puzzles from the Rubik's family are Face-Turning, while the Dino Cube is Corner-Turning and Helicopter Cube is Edge-Turning.Īnother important aspect of the hexadedron ("Cube") puzzles is that some of them have no definite orientation. I also include the Helicopter Cube because it is an example of a rare form of twisty puzzle (with a familiar shape). In other words, the Dino Cube is extremely regular, like the Rubik's family (and I hope you find it educational). I include the Dino Cube because all of its visible blocks are identical, and (hopefully no surprise) all of its visible facets are also identical. There are many variations of the Cube puzzle, and I don't have the time or patience to explain them all (would you have the time to read about them all?). The other "odd balls" are the Dino Cube and Helicopter Cube. Yet in terms of the number of combinations ("difficulty"), it is arguably the most challenging class of twisty-puzzles.Īll but two of the puzzles on this page are from the "Rubik's" cube family. (If you are wondering why "cube-root" is important, it is because we inhabit a 3-D space.) Thus, conceptually, the Rubik's Cube family of puzzles is the simplest. I can't say exactly why this is true, but I suspect this is due to the fact that the "cube" shape has 8 corners, and 8 can be "cube-rooted" into an integer (i.e., ∛ 8 = 2) which is not true of any other Platonic solid. ![]()
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