Difficult Riddles For Smart Kids: More Than 1000 Riddles, Trick Questions And Brain Teasers That The Whole Family Will Love To Solve (For Kids Age 4-8 And 9-12) (Riddles For Kids Book 2)
- Difficult Riddles For 10 Years Old Kids: 300 Difficult Riddles and Brain Teasers Families Will Love (Great Gift).