Swallows and Amazons series and observed, "It is the portrayal of this spirit which makes play a matter of desperate yet enjoyable earnestness which gives their distinctive stamp to Mr. Ransome's books. ... Because he understands the whole-heartedness of youth he can invest a momentary experiment, such as young Roger's Indian scout work, with real suspense." In 1963, the BBC screened a television series starring Susan George as 'Kitty' (changed from Titty), which was violently disliked by Arthur Ransome. The six-part series aired in September and October 1963. In 1974, EMI produced a film version of the "Swallows and Amazons", starring Virginia McKenna and
Game of the Amazons in 1994, and an updated version with graphics in Visual Basic in 1995. There are Amazons tournaments at the Computer Olympiad, a series of computer-versus-computer competitions. Usually, in the endgame, the board is partitioned into separate "royal chambers", with queens inside each chamber. We define simple Amazons endgames to be endgames where each chamber has at most one queen. Determining who wins in a simple Amazons endgame is NP-hard. This is proved by reducing it to finding the Hamiltonian path of a cubic subgraph of the square grid graph. Generalized Amazons (that is, determining the winner of a game of