Tree path 3 levels Nimzo-Indian Defense › Three Knights Variation › Nimzo-Indian Defense: St. Petersburg Variation
- Chess Codex
- Nimzo-Indian Defense E20
- Three Knights Variation E21
- Nimzo-Indian Defense: St. Petersburg Variation E43 you are here
Nimzo-Indian Defense: St. Petersburg Variation
Overview
Nimzo-Indian Defense: St. Petersburg Variation is a named branch in the Indian Defenses group of chess theory, classified under ECO E43.
The Indian Defenses group covers Indian defences — hypermodern lines where Black challenges the centre with pieces rather than pawns.
It is reached after 15 plies of play, with the move sequence 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Bxc3+ 5. bxc3 b6 6. e3 Bb7 7. Bd3 O-O 8. O-O.
In the opening tree, this line branches off from Nimzo-Indian Defense: Three Knights Variation, part of the broader Nimzo-Indian Defense system.
Use the board to walk through every move, check how the position has scored on Lichess, or take it head-to-head against Stockfish.
- ECO code
- E43
- Group
- Indian Defenses (E)
- Plies
- 15
This overview is generated automatically from the opening's metadata. A more detailed, human-written description is on the way — and you can speed it up by suggesting one yourself.
Statistics from Lichess
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Source: Lichess Opening Explorer · cached
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