411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...Nf6/2. c4/2...e6/3. Nc3
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Indian Defence Indian Defence E20-E59
3. Nc3
With 3. Nc3, White develops a piece and continues to fight for the center of the board. On c3, the knight controls the important d5 and e4 squares. Black can choose from four main continuations.
/3...Bb4/ the Nimzo-Indian Defence, fighting for the center by pinning White's knight.
/3...d5/ transposing into the Queen's Gambit Declined.
/3...c5/ transposing into the Modern Benoni.
/3...Nc6/ transposing into a variation of the Black Knights' Tango.
Theory table
Nimzo-Indian Defence 3...Bb4 Queen's Gambit Declined 3...d5 Modern Benoni Defence 3...c5 + Black Knights' Tango 3...Nc6 +
References
Indian Defence