About this opening
Benko Gambit Accepted: Fianchetto Variation is an opening in the Encyclopedia of Chess Openings,
classified under code A58. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 17 half-moves from the
starting position, with the move sequence 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. g3 d6 8. Bg2 Bg7 9. Nf3.
It belongs to the Benko Gambit Accepted family. Within that family this is a sub-variation (the Fianchetto Variation line).
The opening sequence in prose form: 1.d4 Nf6, 2.c4 c5, 3.d5 b5, 4.cxb5 a6, 5.bxa6 g6, 6.Nc3 Bxa6. 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 A58 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.