Hexadeca Rings

How it works

• Rings circle the corners. Each of the 10 corners wears 16 rings: ring 1 is the few tiles touching the corner, ring 16 runs along the far edges of the faces that meet there. A turn slides a ring one face round its corner.
• Turn a ring by swiping along it on the dial, with the ↺ ↻ buttons, or by dragging a tile on the 3D puzzle. Every tile rides three rings, one round each corner of its face, and the direction you drag picks which.
• Pick a corner with ‹ ›, a corner badge on the dial's rim, or a tap on the puzzle near that corner. Cap turns every ring from the corner out to the one you touch.
• Look around by dragging the space around the puzzle (or right-drag, or two fingers). Scroll or pinch to zoom; double-tap to reset.
• Keys: [ ] corner, ↑ ↓ ring, ← → turn, C cap, Ctrl+Z undo.

The solid is the gyroelongated square bipyramid (Johnson solid J17): a square antiprism capped by two square pyramids, and the only convex solid whose 16 faces are all equilateral triangles.