from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective chess Of or pertaining to a particular version of the Indian defense, characterised by the moves d4 Nf6, c4 e6, Nf3 Bb4+ in algebraic chess notation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
From the name of Grandmaster Efim Bogoljubov and Indian.
So they inventing asymmetrical strategies with cool names like the Bogo-Indian defense and the King’s Indian attack, many of which involved deliberate trades of knight/bishop.