15 Puzzle Series X Space Black.png
- Published on September 10th 2025 under the Release to Public Domain license.
- Designated to be used as <not set> icon.
- Icon for Windows XP, Vista and 7.
A minimalist, grayscale icon depicting a 4x4 sliding tile puzzle grid containing Roman numerals I through XV. It features a geometric design with alternating diagonal shades of black and grey.