Original: The precursors of chess originated in India during the Gupta empire , Leibs (/O2004/O) , page 92Forbes (/O1860/O) Robinson & Estes (/O1996/O) , page34 where its early form in the 6th century was known as
Simplified: The precursors of chess originated in northern India during the Gupta empire , where its early form in the 6th century was known as Chaturanga .