The history of chess spans some 1500 years. The earliest predecessors of the game originated in India, prior to the 6th century AD. From India, the game spread to Persia. When the Arabs conquered Persia, chess was taken up by the Muslim world and subsequently, through the Moorish conquest of Hispania, spread to Southern Europe. In Europe, the game evolved into its current form in the 15th century. In the second half of the 19th century, modern tournament play began, and the first world chess championship was held in 1886. The 20th century saw great leaps forward in chess theory and the establishment of the World Chess Federation (FIDE). Developments in the 21st century include the employment of computers for analysis, team consultations, and online gaming.