A Hat Full of Sky is a novel written by Terry Pratchett set on the Discworld, written with younger readers in mind. First published in 2004, it is set two years after The Wee Free Men, and features an 11-year old Tiffany Aching. The book is also a sequel to the Discworld short story "The Sea and Little Fishes", which introduced the Witch Trials and Mrs Earwig. It is followed by Wintersmith.
The Algebraist, a science fiction novel by Scottish writer Iain M. Banks, first appeared in print in 2004. It was nominated for a Hugo Award for Best Novel in 2005. It was his third science fiction novel not to be based or set in The Culture, and the first not to be potentially in the same universe.
Going Postal is Terry Pratchett's 33rd Discworld novel, released in the United Kingdom on September 25, 2004. Unusually for a Discworld novel, Going Postal is divided into chapters, previously only seen in the children's books and the Science of Discworld series. These chapters begin with a synopsis of philosophical themes, in a similar manner to some Victorian novels and, notably, to Jules Verne stories. The title refers to both the contents of the novel, as well as to the term 'going postal'.
Of the City of the Saved... is an original novel by Philip Purser-Hallard set in the Faction Paradox universe. Although taking place in a shared universe, it is a stand-alone work that does not require any prior knowledge. Laura Tobin, who first appeared in the BBC Doctor Who books, is a major character in the novel, but no familiarity with her back story is assumed.
Iron Council (2004) is the fourth novel by China Miéville, set in the same universe as his previous books Perdido Street Station (2000) and The Scar (2002), although they can all be read independently of each other. In addition to the steampunk influences shared by its predecessors, Iron Council also draws several elements from the western genre.
Alessandro Salvio (c. 1570 – c. 1640) was an Italian chess player who is considered to be the unofficial world champion around the year 1600. He started an Italian chess academy in Naples, Italy, and wrote a book called Trattato dell'Inventione et Arte Liberale del Gioco Degli Scacchi, which was published in Naples in 1604. He also wrote Il Puttino published in 1634.