King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O c5 7.Nc3 Nc6 8.d5

ECO E66

The King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line is a chess opening line in the King's Indian Defense complex, reached after 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O c5 7.Nc3 Nc6 8.d5.

It is catalogued under code E66 in the Encyclopaedia of Chess Openings (ECO).

The defining move d5 is chosen by White on move 8.

Study this line with a grandmaster

This position is covered in the Grunfeld Defense course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.