15 Puzzle Series 11 Pro Night Sky.png
- Published on September 10th 2026 under the Release to Public Domain license.
- Designated to be used as <not set> icon.
- Icon for Windows XP, Vista and 7.
A grayscale 4x4 grid featuring tiles numbered with Roman numerals from I to XVI. Each tile has a faceted, three-dimensional appearance created by triangular shading in varying shades of gray.