In which district of India are the enclaves of Bangladesh located?

The origin of the Indian and Bangladeshi enclaves dates to the 18th century, the outcome of war and peace treaties between rulers in Bengal and Cooch Behar. In ancient India, north Bengal proved a strategic location as a gateway to rest of the Bengal, and a frontier zone between Hindu, Muslim, and Buddhist kingdoms.

While local legend has it the enclaves derived from a chess match between the Maharaja of Cooch Behar and a Mughal commander with villages as wager, they were in fact the result of a series of peace treaties signed from 1711 - 13 between the feudal Kingdom of Cooch Behar and the Mughal Empire. Having conquered a wide swath of Cooch Behar, the Mughals were unable to roust a number of Cooch Behar chieftains in areas surrounded by Mughal territory and the lands they held remained part of Cooch Behar.