Library/Openings/Benoni Defense/Fianchetto Variation/Hastings Defense/Main Line ECO A64
Opening· 22 plies

Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line

An entry in the Encyclopedia of Chess Openings (ECO A64), reached after 22 half-moves: 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Nbd7 11. Nd2 Re8.

Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line ECO A64
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Black rook
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White pawn
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End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line is an opening in the Encyclopedia of Chess Openings, classified under code A64. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 22 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Nbd7 11. Nd2 Re8.

It belongs to the Benoni Defense family. Within that family this is a level-3 branch (the Fianchetto Variation → Hastings Defense → Main Line line). The immediate parent line is Benoni Defense: Fianchetto Variation, Hastings Defense, transitioned via 11…Re8.

The opening sequence in prose form: 1.d4 Nf6, 2.c4 e6, 3.g3 c5, 4.d5 exd5, 5.cxd5 d6, 6.Nc3 g6. 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.