The Fianchetto, Main Line is a variation of the Torre Attack, catalogued as ECO A46. The line runs 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 O-O, reaching the position shown below after 10 half-moves.
Both sides have pawns in the centre (White on d4, Black on d5). Development is level at three minor pieces each. It is White to move after five moves. Black has castled while White’s king is still uncommitted.
On the Torre Attack generally: ECO A46. A chess opening with 6 known variations.
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 5 Torre Attack variations →
The Fianchetto, Main Line goes 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 O-O. It is a variation of the Torre Attack and is catalogued as ECO A46.
The Fianchetto, Main Line is ECO A46. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Torre Attack.
Stockfish evaluates the position after 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 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.
Both sides have pawns in the centre (White on d4, Black on d5). Development is level at three minor pieces each. It is White to move. Black has castled while White’s king is still uncommitted.