Tree path 6 levels Queen's Pawn Game › Indian Defense › Normal Variation › Indian Defense: Budapest Defense › Fajarowicz Variation › Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation
- Chess Codex
- Queen's Pawn Game A40
- Indian Defense A45
- Normal Variation A50
- Indian Defense: Budapest Defense A51
- Fajarowicz Variation A51
- Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation A51 you are here
Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation
Overview
Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation is a named branch in the Flank Openings group of chess theory, classified under ECO A51.
The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.
Play reaches this position via 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 b6, after 8 plies of opening development.
In the opening tree, this line branches off from Indian Defense: Budapest Defense, Fajarowicz Variation, 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
- A51
- Group
- Flank Openings (A)
- Plies
- 8
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
18,344 games · White 52.2% / Draw 4.8% / Black 43.0%
| Moves | Games | W / D / B |
|---|---|---|
| Nf3 | 7,405 | |
| Qc2 | 2,924 | |
| Qd5 | 2,488 | |
| Nd2 | 2,252 | |
| Bf4 | 765 | |
| e3 | 578 | |
| g3 | 542 | |
| f3 | 480 |
Source: Lichess Opening Explorer · cached 2026-09-26 01:45:20
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