ECO family guide

Latvian Gambit — all variations and ECO codes

17 named lines across 2 ECO codes (C40–C44). Source: the CC0-licensed lichess.org opening database.

The main line

Position after 1.e4 e5 2.Nf3 f5 (C40). Open this line on Lichess → · Latvian Gambit on Lichess

How the main line scores at your rating

Real Lichess win rates for 1.e4 e5 2.Nf3 f5, 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	1,125,828	50.1% / 3.0% / 46.9%	48.4%
1600-1800	1,371,376	48.7% / 3.2% / 48.2%	49.7%
1800-2000	1,350,931	48.0% / 3.6% / 48.4%	50.2%
2000+	939,248	47.6% / 4.5% / 47.9%	50.1%

All 17 named variations

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

C40Latvian Gambit (main line) — 1.e4 e5 2.Nf3 f5
C40Behting Variation — 1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Qg5 5.Nf7 Qxg2 6.Rf1 d5 7.Nxh8 Nf6
C40Corkscrew Countergambit — 1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Nf6
C40Corkscrew Gambit — 1.e4 e5 2.Nf3 f5 3.Nxe5 Nf6 4.Bc4 fxe4 5.Nf7 Qe7 6.Nxh8 d5
C40Diepstraten Countergambit — 1.e4 e5 2.Nf3 f5 3.c4
C40Fraser Defense — 1.e4 e5 2.Nf3 f5 3.Nxe5 Nc6
C40Greco Variation — 1.e4 e5 2.Nf3 f5 3.Nxe5 Qe7
C40Lobster Gambit — 1.e4 e5 2.Nf3 f5 3.g4
C40Mason Countergambit — 1.e4 e5 2.Nf3 f5 3.d4
C40Mayet Attack — 1.e4 e5 2.Nf3 f5 3.Bc4
- C40Morgado Defense — 1.e4 e5 2.Nf3 f5 3.Bc4 Nf6
- C40Poisoned Pawn Variation — 1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Qg5 5.d4 Qxg2
- C40Polerio-Svedenborg Variation — 1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 d5
- C40Strautins Gambit — 1.e4 e5 2.Nf3 f5 3.Bc4 b5
C40Mlotkowski Variation — 1.e4 e5 2.Nf3 f5 3.Nc3
C40Senechaud Gambit — 1.e4 e5 2.Nf3 f5 3.b4
C44Clam Gambit — 1.e4 e5 2.Nf3 Nc6 3.d3 f5 4.exf5