ECO family guide

Benoni Defense — all variations and ECO codes

61 named lines across 24 ECO codes (A40–A79). Source: the CC0-licensed lichess.org opening database.

The main line

Position after 1.d4 Nf6 2.c4 c5 (A56). Open this line on Lichess → · Benoni Defense on Lichess

How the main line scores at your rating

Real Lichess win rates for 1.d4 Nf6 2.c4 c5, playing as black — the family's other variations are not separately tracked for win rate yet, main line only.

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Win/draw/loss rate by rating band
Rating band	Games	White / draw / Black	Score for black
1400-1600	554,364	46.3% / 3.4% / 50.3%	52.0%
1600-1800	1,423,684	44.5% / 4.0% / 51.5%	53.5%
1800-2000	2,862,803	44.0% / 4.8% / 51.2%	53.6%
2000+	5,430,248	46.1% / 6.4% / 47.5%	50.7%

All 61 named variations

Every named line in the Benoni Defense family, from the CC0-licensed ECO classification — not separately tracked for win rate, but every ECO code and move sequence is real, sourced data.

A56Benoni Defense (main line) — 1.d4 Nf6 2.c4 c5
A61Benoni Defense (main line) — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6
A40Franco-Sicilian Hybrid — 1.d4 e6 2.c4 c5 3.d5 exd5 4.cxd5 d6 5.Nc3 g6 6.e4 Bg7 7.Nf3 Ne7
A43Benoni Gambit Accepted — 1.d4 c5 2.dxc5
Benoni Gambit
- A43Schlenker Defense — 1.d4 c5 2.dxc5 Na6
A43Benoni-Indian Defense — 1.d4 c5 2.d5 Nf6
- A43Kingside Move Order — 1.d4 c5 2.d5 Nf6 3.Nf3
A43Benoni-Staunton Gambit — 1.d4 c5 2.d5 f5 3.e4
A43Cormorant Gambit — 1.d4 c5 2.dxc5 b6
A43French Benoni — 1.e4 e6 2.d4 c5 3.d5
A43Hawk Variation — 1.d4 Nf6 2.Nf3 c5 3.d5 c4
A43Old Benoni — 1.d4 c5
A43Old Benoni — 1.d4 c5 2.d5
A43Old Benoni — 1.d4 c5 2.d5 d6
A44Old Benoni — 1.d4 c5 2.d5 e5
- A43Mujannah Formation — 1.d4 c5 2.d5 f5
- A43Schmid Variation — 1.d4 c5 2.d5 d6 3.Nc3 g6
A43Snail Variation — 1.d4 c5 2.d5 Na6
A43Woozle — 1.d4 c5 2.d5 Nf6 3.Nc3 Qa5
A43Zilbermints-Benoni Gambit — 1.d4 c5 2.b4
A43Zilbermints-Benoni Gambit — 1.d4 c5 2.Nf3 cxd4 3.b4
- A43Tamarkin Countergambit — 1.d4 c5 2.Nf3 cxd4 3.b4 e5
A44Semi-Benoni — 1.d4 c5 2.d5 e5 3.e4 d6
A56Czech Benoni Defense — 1.d4 Nf6 2.c4 c5 3.d5 e5
A56Hromádka System — 1.d4 Nf6 2.c4 c5 3.d5 d6
A56King's Indian System — 1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6
A56Weenink Variation — 1.d4 Nf6 2.c4 c5 3.dxc5 e6
A60Modern Variation — 1.d4 Nf6 2.c4 c5 3.d5 e6
- A60Snake Variation — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 Bd6
A61Fianchetto Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.g3
A62Fianchetto Variation — 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
- A63Hastings Defense — 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 Nbd7
  - A64Main Line — 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
A61Knight's Tour Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Nd2
A61Uhlmann Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Bg5
A65King's Pawn Line — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4
A65King's Pawn Line — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f3 Bg7
A65King's Pawn Line — 1.d4 Nf6 2.c4 g6 3.f3 c5 4.d5 d6 5.e4 Bg7 6.Nc3 e6 7.Be3 O-O 8.Qd2 exd5 9.cxd5
- A65with Be3 — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f3 Bg7 8.Be3
- A65with Bg5 — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5
  A65with Bg5 — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f3 Bg7 8.Bg5
  A65with Bg5 — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5 9.exd5
- A65with Nge2 — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f3 Bg7 8.Nge2
  A65with Nge2 — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Nge2 c5 7.d5 e6 8.Ng3 exd5 9.cxd5
A66Mikenas Variation — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.e5
A66Pawn Storm Variation — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4
A67Taimanov Variation — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+
A68Four Pawns Attack — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O
- A69Main Line — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 9.Be2 Re8
A70Classical Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.e4
A72Classical Variation — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
- A70New York Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.e4 Bg7 8.h3
- A70Traditional Variation — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.e4 Bg7 8.Be2
- A71Averbakh-Grivas Attack — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.e4 Bg7 8.Bg5
- A73Main Line — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O
- A74Full Line — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O a6 10.a4
- A75Argentine Counterattack — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.e4 Bg7 8.Be2 O-O 9.O-O a6 10.a4 Bg4
- A76Czerniak Defense — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8
  A78Czerniak Defense — 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.e4 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6
  A79Czerniak Defense — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f3
  - A77Tal Line — 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2