The Hunting of the Snark of the poem as a child. Additionally, it has also been alluded to in fiction, such as "Perelandra" (1943) by C.S. Lewis; television, such as "" episode of the British TV crime drama "Lewis"; court rulings, such as in Parhat v. Gates (2008); a phenomenon in superfluidity; graph theory; geography, as a Snark Island and Boojum Rock exist in the Andaman and Nicobar Islands in the Bay of Bengal; Japanese animation, such as "Ghost Hound" (2007–08); and in video games, such as "Half-Life" (1998) and "American McGee's Alice" (2000). Various themes have been suggested by scholars. According to biographer Florence
Lewis Carroll early version of what today is known as Scrabble. He appears to have invented – or at least certainly popularized – the "doublet" (see word ladder), a form of brain-teaser that is still popular today, changing one word into another by altering one letter at a time, each successive change always resulting in a genuine word. For instance, CAT is transformed into DOG by the following steps: CAT, COT, DOT, DOG. The games and puzzles of Lewis Carroll were the subject of Martin Gardner's March 1960 Mathematical Games column in Scientific American. Other items include a rule for finding the