411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...Nf6/2. c4/2...g6/3. Nc3/3...Bg7/4. Nf3/4...d6
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Kings Indian Defence Queens Pawn Opening
4...d6
White mostly plays 5. e4 here, claiming a strong centre and transposing into the main line of the Kings Indian Defence.
Theory table
5. e4 5. g3 5. Bg5 5. Bf4 5. h3 5.e3
References