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Tree path 3 levels Nimzo-Indian Defense › Rubinstein System › Nimzo-Indian Defense: St. Petersburg Variation
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  2. Nimzo-Indian Defense E20
  3. Rubinstein System E40
  4. Nimzo-Indian Defense: St. Petersburg Variation E43 you are here
E43

Nimzo-Indian Defense: St. Petersburg Variation

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Overview

Nimzo-Indian Defense: St. Petersburg Variation is a specific line in the Indian Defenses family (ECO E43), arising from a recognised theoretical position.

The Indian Defenses group covers Indian defences — hypermodern lines where Black challenges the centre with pieces rather than pawns.

It is reached after 8 plies of play, with the move sequence 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6.

The line refines Nimzo-Indian Defense: Rubinstein System, which traces back to the root opening Nimzo-Indian Defense.

The line splits into 2 documented sub-systems: Nimzo-Indian Defense: St. Petersburg Variation, Nimzo-Indian Defense: St. Petersburg Variation.

In total, the branch covers 11 sub-variations across all depths.

Explore the position on the interactive board, study its real-world results from Lichess, and challenge the engine when you are ready.

ECO code
E43
Group
Indian Defenses (E)
Plies
8
Parent
Nimzo-Indian Defense: Rubinstein System
Direct variations
2
Total in subtree
11

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.

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Variations (2)

Related variations at the same level

Sister lines that share the same parent Nimzo-Indian Defense: Rubinstein System:

Show all 11 sub-variations (full subtree)

https://test.av-webdevs.com/openings/nimzo-indian-defense-st-petersburg-variation