section_path: Legacy/Leisure
section_name: Leisure
paragraph_text: Leisure
  
  Chess is said to have developed in this period, where its early form in the 6th century was known as caturaṅga, which translates as "four divisions " – infantry, cavalry, chariotry, and elephantry – represented by the pieces that would evolve into the modern pawn, knight, rook, and bishop respectively. Doctors also invented several medical instruments, and even performed surgical operations. The ancient Gupta text Kama Sutra by the Indian scholar Vatsyayana is widely considered to be the standard work on human sexual behaviour in Sanskrit literature.