Chess · Nimzo-Indian Defense | Compare
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Using this reference
For Nimzo-Indian Defense, 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.
Opening lines
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.
The board shows one representative line for each ECO code. All collected branches and their PGN moves remain listed below.
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3
FEN: rnbqk2r/pppp1ppp/4pn2/8/1bPP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 3 4
E21 · Nimzo-Indian Defense
4 PGN · 4 FEN
- Nimzo-Indian Defense: Three Knights Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 - Nimzo-Indian Defense: Three Knights Variation, Korchnoi Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. d5 - Nimzo-Indian Defense: Three Knights Variation, Euwe Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. d5 Ne4 - Nimzo-Indian Defense: Three Knights Variation, Shocron Gambit:
1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 c5 5. d5 b5
E22 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense: Spielmann Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3
E23 · Nimzo-Indian Defense
4 PGN · 4 FEN
- Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 - Nimzo-Indian Defense: Spielmann Variation, Carlsbad Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Ne4 7. Bd2 Nxd2 - Nimzo-Indian Defense: Spielmann Variation, Stahlberg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Ne4 7. Bd2 Nxc5 - Nimzo-Indian Defense: Spielmann Variation, Stahlberg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Ne4 7. Bd2 Nxc5 8. Qc2 f5 9. g3
E25 · Nimzo-Indian Defense
3 PGN · 3 FEN
- Nimzo-Indian Defense: Sämisch Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 - Nimzo-Indian Defense: Sämisch Variation, Keres Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 - Nimzo-Indian Defense: Sämisch Variation, Romanovsky Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 f5
E26 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Sämisch Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 - Nimzo-Indian Defense: Sämisch Variation, O'Kelly Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 b6
E28 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense: Sämisch Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. a3 Bxc3+ 6. bxc3
E29 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Sämisch Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 O-O - Nimzo-Indian Defense: Sämisch Variation, Capablanca Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 O-O 8. Ne2 b6 9. e4 Ne8
E30 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Leningrad Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 - Nimzo-Indian Defense: Leningrad Variation, Averbakh Gambit:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 b5
E32 · Nimzo-Indian Defense
3 PGN · 3 FEN
- Nimzo-Indian Defense: Classical Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 - Nimzo-Indian Defense: Classical Variation, Keres Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b6 - Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b5
E33 · Nimzo-Indian Defense
5 PGN · 5 FEN
- Nimzo-Indian Defense: Classical Variation, Zurich Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 - Nimzo-Indian Defense: Classical Variation, Zurich Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 - Nimzo-Indian Defense: Classical Variation, Milner-Barry Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 - Nimzo-Indian Defense: Classical Variation, Zurich Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. e3 - Nimzo-Indian Defense: Classical Variation, Zurich Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 6. Bd2
E34 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Classical Variation, Noa Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 - Nimzo-Indian Defense: Classical Variation, Belyavsky Gambit:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 Qxd5 6. Nf3 Qf5 7. Qd1 e5
E36 · Nimzo-Indian Defense
4 PGN · 4 FEN
- Nimzo-Indian Defense: Classical Variation, Noa Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 - Nimzo-Indian Defense: Classical Variation, Noa Variation, Botvinnik Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Nc6 - Nimzo-Indian Defense: Classical Variation, Noa Variation, Main Line:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 - Nimzo-Indian Defense: Classical Variation, Romanishin Gambit:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 c5
E37 · Nimzo-Indian Defense
3 PGN · 3 FEN
- Nimzo-Indian Defense: Classical Variation, Noa Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 - Nimzo-Indian Defense: Classical Variation, Modern Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 c5 - Nimzo-Indian Defense: Classical Variation, Noa Variation, San Remo Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 Nc6 8. e3 e5
E38 · Nimzo-Indian Defense
3 PGN · 3 FEN
- Nimzo-Indian Defense: Classical Variation, Berlin Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 - Nimzo-Indian Defense: Classical Variation, Berlin Variation, Steiner Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Bxc3+ - Nimzo-Indian Defense: Classical Variation, Berlin Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e3 d5 6. Nf3 c5
E40 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Rubinstein System:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 - Nimzo-Indian Defense: Rubinstein System, Taimanov Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6
E41 · Nimzo-Indian Defense
3 PGN · 3 FEN
- Nimzo-Indian Defense: Rubinstein System:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 - Nimzo-Indian Defense: Rubinstein System, Hübner Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 - Nimzo-Indian Defense: Rubinstein System, Hübner Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. O-O O-O
E43 · Nimzo-Indian Defense
12 PGN · 12 FEN
- Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Ne4 6. Qc2 - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O - Nimzo-Indian Defense: St. Petersburg Variation, with Ne4:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 Ne4 - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O c5 - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Ne4 5. Qc2 f5 6. Nf3 b6 7. Bd3 Bb7 - Nimzo-Indian Defense: St. Petersburg Variation:
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 - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 b6 7. O-O Bb7 8. Na4 Qe7 - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Ne4 6. Qc2 Bb7 7. Bd3 Bxc3+ 8. bxc3 f5 9. O-O - Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O c5 8. Na4 cxd4 9. a3 Be7
E44 · Nimzo-Indian Defense
3 PGN · 3 FEN
- Nimzo-Indian Defense: St. Petersburg Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 - Nimzo-Indian Defense: St. Petersburg Variation, American Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Ne4 - Nimzo-Indian Defense: St. Petersburg Variation, Romanishin-Psakhis Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 c5 6. a3 Ba5
E45 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense: St. Petersburg Variation, Fischer Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Ba6
E47 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense: Normal Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3
E48 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Normal Variation, Classical Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 - Nimzo-Indian Defense: Ragozin Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O
E50 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3
E51 · Nimzo-Indian Defense
5 PGN · 5 FEN
- Nimzo-Indian Defense: Normal Variation, Ragozin Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 - Nimzo-Indian Defense: Normal Variation, Sämisch Deferred:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. a3 - Nimzo-Indian Defense: Normal Variation, Ragozin Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Bd2 Nc6 - Nimzo-Indian Defense: Normal Variation, Ragozin Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Bd2 Nc6 7. a3 - Nimzo-Indian Defense: Ragozin Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O dxc4
E52 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Normal Variation, Schlechter Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 - Nimzo-Indian Defense: Normal Variation, Schlechter Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5
E54 · Nimzo-Indian Defense
3 PGN · 3 FEN
- Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 - Nimzo-Indian Defense: Normal Variation, Gligoric System, Smyslov Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Qe7 - Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 cxd4 9. exd4
E55 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense: Normal Variation, Gligoric System, Bronstein Variation:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7
E56 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense: Normal Variation, Gligoric System, Bernstein Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6
E58 · Nimzo-Indian Defense
1 PGN · 1 FEN
- Nimzo-Indian Defense: Normal Variation, Bernstein Defense, Exchange Line:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 Bxc3 9. bxc3
E59 · Nimzo-Indian Defense
2 PGN · 2 FEN
- Nimzo-Indian Defense: Normal Variation, Bernstein Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 - Nimzo-Indian Defense: Normal Variation, Bernstein Defense:
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8. Bxc4 c5 9. Nf3 Nc6 10. O-O Qc7 11. Qc2
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