Queen's Pawn Side-Defences

Board Position
In an Indian defence to a Queen's Pawn opening, Black replies 1..Kt-KB3 (move 1, see left) to White's 1.P-Q4 with the idea of contesting the centre by more indirect means than straightforward pawn play. The strategy is often (but not always!) combined with an "Indian" bishop (qv.) fianchetto.
Thus Black's move is the shared starting point for what becomes (within at most a couple of moves) the Nimzo-Indian (qv.), the Modern Benoni, the King's Indian (qv.), the Grünfeld (qv.), the Bogoljubow or the Queen's Indian (qv.). White may avoid these by adopting lines such as the Colle (qv.) or Stonewall systems, the Catalan (qv.), the Trompowski or other transpositions.
Much of the play in Indian defences is concerned with the struggle to prevent White gaining control of the centre by P-K4 (while the Modern D. (qv.) and Old Benoni D. have similarities but do allow 2.P-K4).
Clear or Groups
or see move:  1 d4 Nf6 (with more info) for 2 c4 e6 3 Nc3 leading to Nimzo-Indian Def.