chigoirn is a grand master and has ruy lopez closed vartion named after him and all indian games is nf6 or nc6
What is an "Indian Game" and/or a "Chigorin?"
a bishop does not necessarily have to be fianchettoed.
Nimzo indian.... sometimes bishop is not fianchettoed. Same as bogo Indian, Old indian. and the little known franco-Indian (which can transpose into lines of the french).
There is a chigorin variation in the Queens gambit as well. Normally its where black plays an early Nc6 without the cpawn being pushed.

Indian defences are chess openings characterised by the moves:
Transpositions are important and many of the positions can be reached by several move orders. They are all to varying degrees hypermodern defences, where Black invites White to establish an imposing presence in the centre with the plan of drawing it out, undermining it, and destroying it. Although Indian defences were championed in the 1920s by players in the hypermodern school, they were not fully accepted until Soviet players showed in the late 1940s that these systems are sound for Black. Since then, Indian defences have been the most popular Black replies to 1.d4 because they offer an unbalanced game with chances for both sides.
The Indian defences are considered more ambitious and double-edged than the symmetrical reply 1...d5. In the Queen's Gambit Declined, Black accepts a cramped, passive position with the plan of gradually equalising and obtaining counterplay. In contrast, breaking symmetry on move one leads to rapid combat in the centre, where Black can obtain counterplay without necessarily equalising first.
The usual White second move is 2.c4, grabbing a larger share of the centre and allowing the move Nc3, to prepare for moving the e-pawn to e4 without blocking the c-pawn. Black's most popular replies are
- 2...e6, freeing the king's bishop and leading into the Nimzo-Indian Defence, Queen's Indian Defence, Bogo-Indian Defence, Modern Benoni, or regular lines of the Queen's Gambit Declined,
- 2... g6, preparing a fianchetto of the king's bishop and entering the King's Indian Defence or Grünfeld Defence, and
- 2... c5, the Modern Benoni, with an immediate counter-punch in the centre

Indian Defenses usually rely on bishops being moved to the side of the board (e.g. fianchetto), based on the old indian game that pawns could not move forward more than one square at a time.
Chigorin Game/Defenses/Attack/etc always require the use fo knights. For example, 1. d4 d5 2. c4 Nc6 is the Chigorin Defense, named for the nc6 move.
Is any game that starts (1.d4...Nf6) an "Indian Game," or is not "Indian" unless a bishop is fianchettoed?
Also, what is a "Chigorin?"