Brainteasers And Riddles For Gritty Kids: 300 Difficult Mindbending Lateral Thinking, Logic, And Math Puzzles For Kids And Families By Allbaugh, Dan By Thriftbooks
Riddles And Brain Teasers For Kids: The Greatest Collection Of Logic Riddles For Expanding Your Mind & Boosting Your Brain Power By Alvis, Dara By Thriftbooks