Main line, through 4... Bf5A07
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5
White's kingside bishop takes the long diagonal.
A07
King's Indian Attack, with Bf5
5 named lines in this family, ECO A07. Every one of them opens 1. Nf3 Nf6 2. g3 d5, so the notes on those moves are written once, just below, instead of once per line. Under each line you get its moves and the sentences it adds that this page has not already printed. A line's own page carries up to its first 4 per-move notes in full.
The moves every line here plays
1. Nf3 Nf6 2. g3 d5
- 1. Nf3 Develops the knight to f3, eyeing d4 and e5. Theory calls this the Zukertort Opening.
- 1... Nf6 Develops the knight to f6, eyeing d5 and e4.
- 2. g3 Prepares the fianchetto: the bishop will take the long diagonal via g2.
- 2... d5 Stakes a claim in the centre, controlling e4, and frees the bishop and queen. Theory calls this the King's Indian Attack.
Main line, after 5. d3, through 5... h6A07
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 h6
Main line, after 5. d3, through 6. Nbd2A07
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 e6 6. Nbd2
Main line, after 5. d3, through 6. Nh4A07
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 e6 6. Nh4
Main line, after 5. d3, through 6... dxc4A07
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 h6 6. c4 dxc4
An early pawn trade leaves the c-file as White's avenue and the d-file as Black's - both sides get real winning chances down their own file.
Walk these lines on a board
An account opens every move's note in this family, the plan behind each line, and a trainer that plays the line back at you. It is free.