ECO A07
King's Indian Attack, with Bf5
The position after 1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.O-O Bf5.
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5
King's Indian Attack, with Bf5 is filed under ECO A07, a variation of King's Indian Attack. It is the position after 1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.O-O Bf5 — 8 half-moves in, with White to move. Named theory ends here; beyond this the position is yours to work out.