Tree path 6 levels Queen's Pawn Game › Indian Defense › Normal Variation › Benoni Defense › Benko Gambit › Benko Gambit Declined: Sosonko Variation
- Chess Codex
- Queen's Pawn Game A40
- Indian Defense A45
- Normal Variation A50
- Benoni Defense A56
- Benko Gambit A57
- Benko Gambit Declined: Sosonko Variation A57 you are here
Benko Gambit Declined: Sosonko Variation
Overview
Benko Gambit Declined: Sosonko Variation is a sacrificial opening line filed under ECO A57 in the Flank Openings group. The defining idea is the early concession of material to seize the initiative and unbalance the position.
The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.
The line arises from 7 plies — specifically the moves 1. d4 Nf6 2. c4 c5 3. d5 b5 4. a4.
In the opening tree, this line branches off from Benko Gambit, part of the broader Queen's Pawn Game system.
Use the board to walk through every move, check how the position has scored on Lichess, or take it head-to-head against Stockfish.
- ECO code
- A57
- Group
- Flank Openings (A)
- Plies
- 7
- Parent
- Benko Gambit
This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.
Statistics from Lichess
60,945 games · White 48.1% / Draw 5.8% / Black 46.1%
| Moves | Games | W / D / B |
|---|---|---|
| bxc4 | 32,000 | |
| b4 | 23,498 | |
| Qa5+ | 3,026 | |
| a6 | 1,315 | |
| bxa4 | 782 | |
| e6 | 113 | |
| d6 | 93 | |
| g6 | 85 |
Source: Lichess Opening Explorer · cached 2026-09-26 01:32:27
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