About this opening
King's Indian Defense: Orthodox Variation, Bayonet Attack, Sokolov's Line is an opening in the Encyclopedia of Chess Openings,
classified under code E97. 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 19 half-moves from the
starting position, with the move sequence 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 Nh5 10. Re1.
It belongs to the King's Indian Defense family.
Within that family this is a level-3 branch (the Orthodox Variation → Bayonet Attack → Sokolov's Line line). The immediate parent line is King's Indian Defense: Orthodox Variation, Bayonet Attack, transitioned via 10.Re1.
The opening sequence in prose form: 1.d4 Nf6, 2.c4 g6, 3.Nc3 Bg7, 4.e4 d6, 5.Nf3 O-O, 6.Be2 e5. 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.