Stephen Krulik & Alfred S Posamentier 
STRATEGY GAMES TO ENHANCE PROBLEM-SOLVING ABILITY IN MATH [PDF ebook] 

Games are seen only for recreation. However, this book shows that games can be used to strengthen problem-solving skills and beyond. This book presents strategy games and discusses for each one solutions towards a winning position in the game. In most cases, these strategies are analogous to problem-solving strategies in mathematics. Readers are also exposed to a wide variety of games from several different cultures, which will broaden the perspective of the readers.