Blumenfeld Countergambit — opening family
3 catalogued lines · ECO E10–E10
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; explore the full tree below and play any branch against the engine.
Variations tree of the Blumenfeld Countergambit family
Click any move to jump to that position; switch branches at any point with the alternative moves. Test your knowledge plays the shown position against the engine.
Start
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 |