Blumenfeld Countergambit — opening family
3 catalogued lines · ECO E10–E10
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The shortest catalogued line of the family runs 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 — the position below. The continuation chips count how many catalogued lines extend this head with each next move; any branch can be explored on the interactive tree and played against the engine from there.
Main continuations
All 3 lines
| Name | ECO | Main line length |
|---|---|---|
| Blumenfeld Countergambit | E10 | 8 plies |
| Blumenfeld Countergambit: Duz-Khotimirsky Variation | E10 | 9 plies |
| Blumenfeld Countergambit: Spielmann Variation | E10 | 12 plies |