Library/Openings/Zukertort Opening/Double Fianchetto Attack ECO A05
Opening· 11 plies

Zukertort Opening: Double Fianchetto Attack

An entry in the Encyclopedia of Chess Openings (ECO A05), reached after 11 half-moves: 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O.

Zukertort Opening: Double Fianchetto Attack ECO A05
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About this opening

Zukertort Opening: Double Fianchetto Attack is an opening in the Encyclopedia of Chess Openings, classified under code A05. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 11 half-moves from the starting position, with the move sequence 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O.

It belongs to the Zukertort Opening family. Within that family this is a sub-variation (the Double Fianchetto Attack line).

The opening sequence in prose form: 1.Nf3 Nf6, 2.g3 g6, 3.b3 Bg7, 4.Bb2 O-O, 5.Bg2 d6, 6.O-O. 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.

Use the interactive board above to walk through the moves position-by-position. Click any move in the navigation to step backwards, or use the keyboard arrow keys. For statistical data — how often master-level players have reached this position, White's win-rate, draw frequency, Black's score — see the panel in the right column.

Caissly's coverage of A05 extends through every named sub-variation in this line and across all four locales (English, Spanish, Portuguese, Russian). Where editorial commentary exists for a specific variation it appears as the page body; otherwise the page presents the structural data, board, and statistics as shown here.