Chess opening
Nimzo-Indian Defense: Three Knights VariationE21
The Nimzo-Indian Defense: Three Knights Variation is a chess opening classified under ECO code E21. It is reached after the moves:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3
Play it vs Stockfish Open in analysis board
Comes from
Main continuations
- Nimzo-Indian Defense: Three Knights Variation, Korchnoi Variation (E21)
- Nimzo-Indian Defense: Romanishin Variation (E20)
- Nimzo-Indian Defense: St. Petersburg Variation (E43)
- Nimzo-Indian Defense: St. Petersburg Variation (E43)
- Nimzo-Indian Defense: Romanishin Variation, English Hybrid (E20)
Related lines in the Nimzo-Indian Defense
- Nimzo-Indian Defense (E20)
- Nimzo-Indian Defense: Dilworth Gambit (E20)
- Nimzo-Indian Defense: Kmoch Variation (E20)
- Nimzo-Indian Defense: Mikenas Attack (E20)
- Nimzo-Indian Defense: Romanishin Variation (E20)
- Nimzo-Indian Defense: Romanishin Variation (E20)
- Nimzo-Indian Defense: Romanishin Variation, English Hybrid (E20)
- Nimzo-Indian Defense: Three Knights Variation, Euwe Variation (E21)
Train this opening
LibreChess runs Stockfish in your browser — play the Nimzo-Indian Defense against the engine at any strength, get hints, and review your game move by move afterwards. Free, no account needed. You can also add this line to your repertoire and drill it with spaced repetition.