King's Indian Defense: Orthodox Variation, Positional Defense

An entry in the Encyclopedia of Chess Openings (ECO E94), reached after 14 half-moves: 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 g6 6. Be2 Bg7 7. O-O O-O.

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8.d5 1 line
- E94 Closed Line
8.Re1 1 line
- E96 Main Line

About this opening

King's Indian Defense: Orthodox Variation, Positional Defense is an opening in the Encyclopedia of Chess Openings, classified under code E94. 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 14 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 g6 6. Be2 Bg7 7. O-O O-O.

It belongs to the King's Indian Defense family. Within that family this is a level-2 branch (the Orthodox Variation → Positional Defense line). The immediate parent line is King's Indian Defense: Orthodox Variation, transitioned via 7…O-O.

The opening sequence in prose form: 1.d4 Nf6, 2.c4 d6, 3.Nc3 Nbd7, 4.e4 e5, 5.Nf3 g6, 6.Be2 Bg7. From this position 2 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.