Blumenfeld Gambit – Top-Level Repertoire for Black + PGN February 12, 2026

Blumenfeld Gambit According to Movahed — Top-Level Repertoire for Black

The Gambit That Refuses to Be Forgotten

For decades, 1.d4 Nf6 2.c4 e6 3.Nf3 has been White’s most reliable route to a safe, structured game — a move order preferred precisely because it steers clear of chaos. The Blumenfeld Gambit refuses that contract. With 3…c5 4.d5 b5, Black sacrifices a pawn for dynamic central control and immediate counterplay. Employed at the elite level by Aronian, Mamedyarov, and more recently Arjun Erigaisi, it remains one of the least-charted territories in modern opening theory. That obscurity is precisely what makes it dangerous.

A Complete and Battle-Tested Weapon

GM Sina Movahed has built a complete Black repertoire around the Blumenfeld, organized from White’s early sidelines (Chapters 1–3) through all critical responses to the gambit itself. The chapter on 7.e3 Bd6 (Chapter 12) serves as the strategic backbone: understanding those positions shows Black’s logic throughout the entire course. The final chapter covers the current theoretical frontier — 7.Nc3 Bb7 8.e4 Nbd7 9.Ng5 Qe7 — incorporating recent top-level practice including Gujarathi–Erigaisi 2024.

Variation Map

1.d4 Nf6 2.c4 e6 3.Nf3

• Chapter 1 — 4.Nc3 — Symmetrical English structure
• Chapter 2 — 4.g3 cxd4 5.Nxd4 d5 — Avoiding White’s d5; quick …e5 setup for Black
• Chapter 3 — 4.e3 a6 — Flexible White setup; precise Black move order

4.d5 b5 — The Blumenfeld Gambit Proper

• Chapter 4 — 5.e3 — Minor 5th-move alternatives; comfortable Black setup
• Chapter 5 — 5.Bg5 — Historical main declining line
• Chapter 6 — 5.Bf4 — Rare but requiring particular attention

5.e4 Nxe4 6.Bd3 Nf6 7.

• Chapter 7 — 7.0-0 and other 7th-move deviations — Dynamic positions, chances for both sides
• Chapter 8 — 7.Nc3 — Main continuation; accurate theoretical knowledge required from both sides

5.dxe6 fxe6 6.cxb5 d5 7.

• Chapter 9 — 7.Bf4 — Sokolov’s favorite; Black builds powerful central structure
• Chapter 10 — 7.Bg5 h6 8.Bh4 c4 — Rare and highly original; limited practical history
• Chapter 11 — 7.g3 a6 8.bxa6 Nc6 — Fianchetto setup; inspired by Mamedyarov–Duda
• Chapter 12 — 7.e3 Bd6 (+ …Qe7, 0-0) — Strategic backbone of the repertoire (Shankland’s recommendation for White)

7.Nc3 — Main Line

• Chapter 13 — 9.e5 Ng4 — Sharp and dynamic; detailed coverage
• Chapter 14 — 9.exd5 exd5 — Largely unexplored in practice
• Chapter 15 — 9.Ng5 Qe7 — Critical tabiya; current theoretical frontier