The Hitchhiker's Guide to the Galaxy States and Canada with Hannibal Records and Simon and Schuster were later negotiated by Douglas Adams and his agent, Ed Victor, after gaining full rights to the recordings from Original Records, which went bankrupt. There have been three audiobook recordings of the novel. The first was an abridged edition (), recorded in the mid-1980s for the EMI label Music For Pleasure by Stephen Moore, best known for playing the voice of Marvin the Paranoid Android in the radio series and in the TV series. In 1990, Adams himself recorded an unabridged edition for Dove Audiobooks (), later re-released by New
Phrases from The Hitchhiker's Guide to the Galaxy Riemann surface with a maximal number of symmetries and as a symmetry of Hyperbolic tiling made up of combinations of triangles with angle angles π/2, π/3, and π/7 . Rumours that mathematicians are grey mice have been disproved, however. The 42 Puzzle is a game devised by Douglas Adams in 1994 for the United States series of "The Hitchhiker's Guide to the Galaxy" books. The puzzle is an illustration consisting of 42 multi-coloured balls, in 7 columns and 6 rows. Douglas Adams has said, In the puzzle the question is unknown, but the answer is already known to be 42.