The King’s Indian Defence is a common chess opening. It arises after the moves: 1. d4 Nf6 2. c4 g6 Black intends to follow up with 3…Bg7 and 4…d6. The Gr?nfeld Defence arises when Black plays 3…d5 instead, and is considered a separate opening. White’s major third move options are 3.Nc3, 3.Nf3 or 3.g3, with both the King’s Indian and Gr?nfeld playable against these moves. The Bg2 variation in the King’s Indian is analysed by GM Henrik Danielsen. Here is the free video lecture, part 2 of the series.