The story
From the name of Grandmaster Efim Bogoljubov and Indian Defence.
Etymology from Wiktionary, CC BY-SA 4.0.
Bogo-Indian Defence
Today it means: A chess opening, a form of Indian Defence, characterised by the moves 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+. Full definition →