15 Puzzle Series X Plus Deep Blue.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 digital icon depicting a 15-puzzle sliding tile game arranged in a 4x4 grid. The blue and grey beveled tiles are numbered with Roman numerals from I to XV, leaving one empty space in the bottom right corner.