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A Tuttminx in spherical shape with the pentagons replaced by heptagons.
Icosahedron 77 is a variation of Icosahedron V1.0 (see the separate entry). 4 more cuts were added to 12 hexagonal faces symmetrically, resulting in 12 heptagonal faces. The remaining 8 hexagonal faces stay with 6 cuts (like Icosahedron Chaotic 1) for transition of pieces between heptagon groups.
The common edge of two adjacent heptagonal faces are randomly installed, which is inherited from Chaotic 1.
By introducing super-cut(applying more cuts than 'necessary') faces, the puzzle behaves like a mixture of Chaotic 1 and a group of 6 NEON puzzles.
Number of stickered pieces: 270
Number of visible independent moving parts: 206
Diameter: 145 mm
Weight: 360 grams
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