About this opening
King's Indian Defense: Fianchetto Variation, Carlsbad Variation is an opening in the Encyclopedia of Chess Openings,
classified under code E62. ECO group E (E00–E99)
covers Indian defences against 1.d4, covering the Nimzo-Indian, Queen's Indian, King's Indian and Catalan systems. This particular variation is reached
after 12 half-moves from the
starting position, with the move sequence 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6.
It belongs to the King's Indian Defense family.
Within that family this is a level-2 branch (the Fianchetto Variation → Carlsbad Variation line). The immediate parent line is King's Indian Defense: Fianchetto Variation, transitioned via 6…Nc6.
The opening sequence in prose form: 1.d4 Nf6, 2.c4 g6, 3.g3 Bg7, 4.Bg2 O-O, 5.Nc3 d6, 6.Nf3 Nc6. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.