Came across this on Varnam’s blog: “Chess originated in Kannauj?”

Varnam quotes from a recent Times of India report: 

“The Maukhari ruler Sharva Varman had gifted the game of ‘chaturanga’ to his contemporary Persian ruler Khushrau-II in lieu of saltpetre (a variety of gunpowder).

A recent book ‘Kannauj, The Maukhari And Chaturanga — The origin of chess and its way from India to Persia,’ authored by Ranate, laid the foundation for further research. The Maukhari rulers used to play ‘chaturanga’ with 16 cabinet terracotta before venturing into military campaigns, said Eder. Even Banbhatta in his ‘Harshcharita’ had mentioned a game called ‘ashtapada’ similar to chess, he added.

Historical accounts say during the later Gupta period there was an Indian army school where cadets were taught about warfare through terracotta pieces on ‘ashtapada’, which was again the game of chess in its primitive stage, said Eder. “