This book analyzes the Dots and Boxes game using Combinatorial Game theory. Berlekamp is a coauthor of the classic Winning Ways for Your Mathematical Plays.
From the back cover:
"This book is an essential guide to the game of Dots-and-Boxes and its mathematical underpinnings. Chapters of strategy are interspersed with 100 sample problems and their strategic solutions.
A wide variety of readers will be intrigued by this book's in-depth look at the game of Dots-and-Boxes, from casual players seeking to improve their play to mathematicians interested in the more sophisticated strategy techniques."