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.
King walks.svg number of ways king on chessboard can reach other positions using the minimal number of moves own work using TeX dvips etc de Benutzer Gunther Chess diagrams Chess mathematical problems
Page 2023 Free-images.com. All images are Public Domain