15 Puzzle Series X Cloud White.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 icon depicting a $4 \times 4$ sliding tile puzzle containing Roman numerals I through XV and one empty space. It features a clean, high-key design in shades of white and grey.