'I had sent my heroine straight down a rabbit-hole without the least idea what was to happen afterwards,' wrote Dodgson, describing how Alice was conjured up one 'golden afternoon' in 1862 to entertain his child-friend Alice Liddell.

In the nonsensical Wonderland and the back-to-front Looking-Glass kingdom, order is turned upside-down: a baby turns into a pig; time is abandoned at a tea-party; and a chaotic game of chess makes a 7-year-old a Queen.