Chess — Blumenfeld Countergambit E10 : opening moves and positions
Chess · ECO E10
An ECO code groups opening lines, not one forced position. Step through legal notation from the CC0 Lichess dataset. This is a study viewer, without engine evaluation or a claim that a line is best.
1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5
FEN: rnbqkb1r/p2p1ppp/4pn2/1ppP4/2P5/5N2/PP2PPPP/RNBQKB1R w KQkq - 0 5
Source data · E10
7 PGN · 7 FEN · Opening line: 7
- Blumenfeld Countergambit:
1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 - Blumenfeld Countergambit: Duz-Khotimirsky Variation:
1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg5 - Blumenfeld Countergambit: Spielmann Variation:
1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg5 exd5 6. cxd5 h6 - Indian Defense: Anti-Nimzo-Indian:
1. d4 Nf6 2. c4 e6 3. Nf3 - Indian Defense: Dzindzi-Indian Defense:
1. d4 Nf6 2. c4 e6 3. Nf3 a6 - Indian Defense: Döry Indian:
1. d4 Nf6 2. c4 e6 3. Nf3 Ne4 - Blumenfeld Countergambit Accepted:
1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. dxe6 fxe6 6. cxb5 d5
Game and item names below retain the source’s English identifiers so you can find them in the linked documentation.
Related game questions
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- Chess — Queen's Indian Defense, with e3 E14 : opening moves and positions
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Using this reference
For Blumenfeld Countergambit, start at the first position and step through the moves rather than memorizing the final board. After each move, look for the piece that moved and the squares it now influences. The same opening name can cover several branches, so use the selected line’s move order as your reference.
The final position in the viewer is where this recorded line ends, not a verdict on the position. Choose another listed branch to see where the paths separate. The viewer displays legal source moves; it does not provide an engine evaluation or establish a forced continuation.
Sources and scope
Public source snapshot; changes after this version may differ. 2026-11-03
chess-a · CC0
chess-b · CC0
chess-c · CC0
chess-d · CC0
chess-e · CC0