Lewis Carroll (Charles L. Dodgson) ended his life just before his 66th birthday. His sudden death deprived us of the opportunity to acquaint ourselves with his intellectual puzzles and riddles that were still to be published. Luckily, however, some of his clever devices were kept and found in the letters left in the hands of his dear child-friends. In this paper, I trace mainly riddles and puzzles through the letters that have come to light, as well as word-games, such as Doublets, Syzygies and Mischmasch, to know how he devised them and used them to play with his child-friends. I have tried to introduce parts of their letters to show the character of their friendship. Carroll’s child-friends were surely Muses to him when he created riddles and puzzles and even games. What had been in Carroll’s mind was the strong love for the young, especially girls, to help them to enhance the abilities they had and enjoy their lives by cultivating ‘a spirit of enquiry,’ and ultimately to raise the status of women.