This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Killersudoku color.svg Edited the colors little so it can be colored with four colors Other than that followed the original Killer Sudoku Puzzle Own Toon Spin Toon Killersudoku color solution svg Original was file by en SGBailey from data he got from the Times Killer sudokus
Page 2023 Free-images.com. All images are Public Domain