The game of chess has origins that trace back to the 6th century in India, where it was known as chaturanga. This early version of the game featured pieces that represented different military units, and it spread to Persia, where it became known as shah. By the 15th century, chess evolved into its modern form in Europe, with changes to the movement of pieces, particularly the queen and bishop. The game gained popularity among the nobility and eventually led to the establishment of international competitions, including the first official World Chess Championship in 1886.