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ECO E12: Queen's Indian Defense

ECO E12 is part of volume E — Indian Defenses. The Lichess chess-openings dataset files 18 named lines under it. The shortest is Queen's Indian Defense: 1. d4 Nf6 2. c4 e6 3. Nf3 b6.

That position has come up in 2,173,492 Lichess games between players rated 1600 to 2500: White won 47.9%, 6.9% were drawn and Black won 45.2%.

OpeningMovesPlies
Queen's Indian Defense 1. d4 Nf6 2. c4 e6 3. Nf3 b6 6
Queen's Indian Defense: Kasparov Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 7
Queen's Indian Defense: Miles Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bf4 7
Queen's Indian Defense: Petrosian Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 7
Queen's Indian Defense: Kasparov-Petrosian Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 9
Queen's Indian Defense: Kasparov-Petrosian Variation, Andersson Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Ne4 10
Queen's Indian Defense: Kasparov-Petrosian Variation, Hedgehog Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 g6 10
Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 10
Queen's Indian Defense: Kasparov-Petrosian Variation, Marco Defense 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Be7 10
Queen's Indian Defense: Petrosian Variation, Farago Defense 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 10
Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 exd5 12
Queen's Indian Defense: Kasparov-Petrosian Variation, Modern Variation 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 12
Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 13
Queen's Indian Defense: Kasparov-Petrosian Variation, Petrosian Attack 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 13
Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. a3 d5 6. cxd5 Nxd5 7. e4 13
Queen's Indian Defense: Kasparov-Petrosian Variation, Rashkovsky Attack 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qa4+ 13
Queen's Indian Defense: Kasparov-Petrosian Variation, Romanishin Attack 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Bd2 13
Queen's Indian Defense: Kasparov Variation, Botvinnik Attack 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 h6 6. Bh4 g5 7. Bg3 Nh5 14

https://chesscodex.org/eco/E12