BACKGROUND FILM CREDITS

A young couple playing chess surrounded by bookshelves
Source: https://mixkit.co/free-stock-video/a-young-couple-playing-chess-surrounded-by-bookshelves-100102/
Downloaded HD video and poster from the asset URLs supplied on the source page.

Chess board during a game
Source: https://mixkit.co/free-stock-video/chess-board-during-a-game-5339/
Downloaded HD video and poster from the asset URLs supplied on the source page.

Both source pages identify these clips as available for commercial or personal use under the Mixkit Stock Video Free License.
License: https://mixkit.co/license/#videoFree

The people in this stock footage are illustrative chess players. They are not presented as Sinclair Wilkinson, his students, or clients.

CHESS RULES LIBRARY
chess.js version 1.4.0 by Jeff Hlywa and contributors
https://github.com/jhlywa/chess.js
BSD-2-Clause license reproduced in chess-license.txt.

BOOK COVER
Cover image shown by the U.S. Virgin Islands Chess Federation:
https://www.usvichessfederation.org/news
Confirm the final edition and permission to use its approved cover with the author before commercial launch.