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Fianchetto Variation

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6

Instead of recapturing immediately, Black fianchettoes first. The idea is simple: keep development smooth, prepare ...Bg7 and ...0-0, and then recover material while retaining strong queenside pressure.

ECO Code

A57-A59

Difficulty

Intermediate

Style

Positional/Flexible

Key Players

Kasparov, Shirov, Radjabov

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What Changes vs Immediate ...Bxa6?

The fianchetto move order reduces some sharp options and improves coordination. Black's king is usually safer, and the dark-squared bishop will often be excellent on g7, supporting pressure along the long diagonal.

Main Continuation

Recapture and Central Expansion

6.Nc3 Bxa6 7.e4

Black regains the pawn and White grabs space. From here the battle is about timing: White consolidates, Black activates rooks and targets queenside weaknesses.

Exchange Motif

...Bxf1 (after e4)

Once White plays e4, the a6 bishop can sometimes exchange on f1 to make development awkward and simplify into an active endgame.

Development Plan

...Bg7, ...d6, ...0-0

Black aims for smooth development and open-file rook pressure, without letting White consolidate too easily.

Plans

For White

  • Consolidate the center: e4 gives space, but it also becomes a target for counterplay
  • Limit rook activity: Prevent rooks from dominating open files
  • Choose king safety carefully: If castling is slow, keep the position stable

For Black

  • Rooks to open files: Pressure on a- and b-files is the whole point
  • Bishop activity: The g7 bishop supports queenside and central pressure
  • Timed pawn breaks: ...e6 and ...d6 can undermine White's center

Play the Benko with ...g6

This move order is a practical way to reach the Benko's typical pressure with flexible development.

Back to Benko Gambit Explore White Fianchetto
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