The Double Fianchetto Attack is a variation of the Zukertort Opening, catalogued as ECO A05. The line runs 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O, reaching the position shown below after 11 half-moves.
The four central squares are empty of pawns, so the fight for them is being conducted by pieces. Development is level at three minor pieces each. It is Black to move after six moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.
On the Zukertort Opening generally: A flexible system starting with Nf3. Can transpose into many different openings.
You can play through this variation move by move in your browser — Learn mode walks the line with an explanation at each step, and Drill mode replays it from memory so you find out whether you actually know it. No account is required.
See all 4 Zukertort Opening variations →
The Double Fianchetto Attack goes 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O. It is a variation of the Zukertort Opening and is catalogued as ECO A05.
The Double Fianchetto Attack is ECO A05. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Zukertort Opening.
Stockfish evaluates the position after 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O at 0.00 at depth 18, which is balanced. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
The four central squares are empty of pawns, so the fight for them is being conducted by pieces. Development is level at three minor pieces each. It is Black to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.