Réti Opening: Reversed Blumenfeld Gambit
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Statistics from Lichess
162,464 games: White 53.7% / Draw 3.9% / Black 42.4%
| Next move | Games | White / Draw / BlackW / D / B |
|---|---|---|
| 51,90152K | ||
| 50,31050K | ||
| 15,85716K | ||
| 12,62913K | ||
| 8,3718,371 | ||
| 6,8106,810 | ||
| 5,9455,945 | ||
| 2,8552,855 |
Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 31, 2026
Engine evaluation
+0.04 The position is about equal
Best play: 4... Nf6 5. b5 g6 6. Bb2 e5 7. Nxe5 Bg7 8. Be2 O-O 9. O-O
Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.
Overview
Réti Opening: Reversed Blumenfeld Gambit (ECO A09, Flank Openings) is a gambit in the Réti Opening: Advance Variation, reached after 1. Nf3 d5 2. c4 d4 3. e3 c5 4. b4 (4 moves).
In 162,464 rated Lichess games between players rated 1600 to 2500, White won 53.7%, Black 42.4% and 3.9% were drawn. Black's most played move here is 4…dxe3, in 32% of those games.
Written from the Lichess opening list and explorer. Know this line well? Write about it.
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How to play against the Réti Opening: Reversed Blumenfeld Gambit
4…cxb4 scores best for Black: 47.9%, with Black winning 45.7% and White 49.9% of 8,371 games. The most played, 4…dxe3, scores 47.3% in 52K games, and 4…b6 scores lowest: 38.5%. Stockfish's first choice is 4…Nf6.
Main answers: those played in at least 5% of these games. Score: Black's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings
Transpositions
Cite this page
Caissa Codex. “Réti Opening: Reversed Blumenfeld Gambit (A09)”. Lichess data as of 31 Oct 2026. https://chesscodex.org/openings/reti-opening-reversed-blumenfeld-gambit