ECO volume E opening index

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Volume E holds 100 codes and 357 lines. Each code links through to the families it covers.

ECO is a code used to classify openings. It is one letter and two digits, and the letter names the volume.

E006 lines

Families hereCatalan OpeningIndian Defense

  • Catalan Opening1. d4 Nf6 2. c4 e6 3. g35 moves
  • Catalan Opening1. d4 Nf6 2. c4 e6 3. g3 d56 moves
  • Hungarian Gambit1. d4 Nf6 2. c4 e6 3. g3 e56 moves
  • Indian Defense1. d4 Nf6 2. c4 e6 3. Qb35 moves
  • Devin Gambit1. d4 Nf6 2. c4 e6 3. g45 moves
  • Seirawan Attack1. d4 Nf6 2. c4 e6 3. Bg55 moves

E012 lines

Families hereCatalan Opening

  • Open Defense1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg27 moves
  • Tarrasch Defense1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. Nf3 Nc610 moves

E021 lines

Families hereCatalan Opening

  • Open Defense1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc48 moves

E032 lines

Families hereCatalan Opening

  • Open Defense1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc411 moves
  • Open Defense, Alekhine Variation1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc213 moves

E043 lines

Families hereCatalan Opening

  • Open Defense1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf39 moves
  • Open Defense1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 c6 5. Bg2 dxc410 moves
  • Open Defense, Modern Sharp Variation1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Nc6 6. Qa4 Bb4+12 moves

E052 lines

Families hereCatalan Opening

  • Open Defense, Classical Line1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be710 moves
  • Open Defense, Classical Line1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc412 moves

E064 lines

Families hereCatalan Opening

  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf39 moves
  • Closed1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. d4 O-O 6. O-O c612 moves
  • Closed1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O c6 8. Bf4 b616 moves
  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O c6 7. Qc2 b6 8. Nbd2 Bb7 9. e4 Na618 moves

E072 lines

Families hereCatalan Opening

  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd712 moves
  • Closed, Botvinnik Variation1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7 7. Nc3 c6 8. Qd315 moves

E087 lines

Families hereCatalan Opening

  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7 7. Qc213 moves
  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7 7. Qc2 c6 8. b315 moves
  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7 7. Qc2 c6 8. b3 b616 moves
  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O c6 7. Qc2 b6 8. Rd1 Nbd7 9. Bf417 moves
  • Closed1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7 7. Qc2 c6 8. Bf4 b6 9. Nbd2 Bb7 10. e419 moves
  • Closed, Spassky Gambit1. d4 Nf6 2. c4 e6 3. g3 Be7 4. Bg2 d5 5. Nf3 O-O 6. O-O Nbd7 7. Qc2 c6 8. b3 b6 9. Rd1 Bb7 10. Nc3 b520 moves
  • Closed, Zagoryansky Variation1. d4 e6 2. c4 Nf6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Rd1 b6 9. a417 moves

E096 lines

Families hereCatalan Opening

  • Closed Variation, Rabinovich Variation1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 e6 5. Nbd2 Be7 6. g3 Nbd7 7. Bg2 O-O 8. O-O b516 moves
  • Closed Variation, Traditional Variation1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Nbd2 b616 moves
  • Closed, Main Line1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Nbd215 moves
  • Closed, Main Line1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O c6 7. Qc2 b6 8. Nbd2 Bb7 9. e4 Nbd718 moves
  • Closed, Main Line1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Bf4 b6 9. Nbd2 Bb7 10. e4 dxe4 11. Nxe4 Nxe4 12. Qxe423 moves
  • Closed, Sokolsky Variation1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7 7. Qc2 c6 8. Nbd2 b6 9. b3 a5 10. Bb2 Ba620 moves

E107 lines

Families hereBlumenfeld CountergambitBlumenfeld Countergambit AcceptedIndian Defense

  • Blumenfeld Countergambit1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b58 moves
  • Blumenfeld Countergambit Accepted1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. dxe6 fxe6 6. cxb5 d512 moves
  • Duz-Khotimirsky Variation1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg59 moves
  • Spielmann Variation1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg5 exd5 6. cxd5 h612 moves
  • Anti-Nimzo-Indian1. d4 Nf6 2. c4 e6 3. Nf35 moves
  • Dzindzi-Indian Defense1. d4 Nf6 2. c4 e6 3. Nf3 a66 moves
  • Döry Indian1. d4 Nf6 2. c4 e6 3. Nf3 Ne46 moves

E1121 lines

Families hereBogo-Indian Defense

  • Bogo-Indian Defense1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+6 moves
  • Exchange Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+8 moves
  • Grünfeld Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd27 moves
  • Haiti Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Nc68 moves
  • Monticelli Trap1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 O-O 8. Nc3 Ne4 9. Qc2 Nxc3 10. Ng519 moves
  • New England Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nfd27 moves
  • Nimzowitsch Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe78 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Be78 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf311 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 O-O12 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 O-O 7. O-O13 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 O-O 7. Qc2 c6 8. O-O15 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 Nbd7 7. O-O O-O 8. Qc2 c616 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 Nbd7 7. O-O O-O 8. Qc2 c6 9. b317 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 Nbd7 7. O-O O-O 8. Qc2 c6 9. Rc117 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 Nbd7 7. O-O O-O 8. Qc2 c6 9. Rd117 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 Nbd7 7. O-O O-O 8. Qc2 c6 9. Rd1 h618 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O c6 8. Qc2 Nbd7 9. Bf4 b6 10. Nbd219 moves
  • Retreat Variation1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O c6 8. Qc2 Nbd7 9. Bf4 b6 10. Nbd2 Ba620 moves
  • Vitolins Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 c58 moves
  • Wade-Smyslov Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a58 moves

E1218 lines

Families hereQueen's Indian Defense

  • Queen's Indian Defense1. d4 Nf6 2. c4 e6 3. Nf3 b66 moves
  • Kasparov Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc37 moves
  • Kasparov Variation, Botvinnik Attack1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 h6 6. Bh4 g5 7. Bg3 Nh514 moves
  • Kasparov-Petrosian Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc39 moves
  • Kasparov-Petrosian Variation, Andersson Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Ne410 moves
  • Kasparov-Petrosian Variation, Classical Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 exd512 moves
  • Kasparov-Petrosian Variation, Hedgehog Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 g610 moves
  • Kasparov-Petrosian Variation, Kasparov Attack1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc213 moves
  • Kasparov-Petrosian Variation, Main Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d510 moves
  • Kasparov-Petrosian Variation, Marco Defense1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Be710 moves
  • Kasparov-Petrosian Variation, Modern Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd512 moves
  • Kasparov-Petrosian Variation, Petrosian Attack1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e313 moves
  • Kasparov-Petrosian Variation, Polovodin Gambit1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. a3 d5 6. cxd5 Nxd5 7. e413 moves
  • Kasparov-Petrosian Variation, Rashkovsky Attack1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qa4+13 moves
  • Kasparov-Petrosian Variation, Romanishin Attack1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Bd213 moves
  • Miles Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bf47 moves
  • Petrosian Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a37 moves
  • Petrosian Variation, Farago Defense1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb710 moves

E131 lines

Families hereQueen's Indian Defense

  • Kasparov Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. Bg5 h6 6. Bh4 Bb712 moves

E1422 lines

Families hereQueen's Indian Defense

  • with e31. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. c411 moves
  • with e31. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. c4 Be712 moves
  • with e31. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. c4 g612 moves
  • with e31. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O Be7 6. c4 O-O 7. Nc313 moves
  • with e31. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 c5 6. b3 Be7 7. Bb2 d6 8. O-O O-O 9. c417 moves
  • with e31. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 b6 5. Nc3 Bb710 moves
  • with e31. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 b6 5. Nc3 Bd6 6. Bd311 moves
  • with e31. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 b6 5. Nc3 Bd6 6. Bd3 O-O 7. O-O Bb714 moves
  • with e31. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 Be7 5. Nc3 O-O 6. b3 b612 moves
  • with e31. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 Be7 5. b3 O-O 6. Bd3 b612 moves
  • with e31. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 Be7 5. b3 O-O 6. Bb2 b6 7. Nbd2 Bb7 8. Bd315 moves
  • with e31. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e313 moves
  • with e31. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 Be7 5. d4 O-O 6. b3 b6 7. cxd5 exd5 8. Bb2 Bb7 9. Bd317 moves
  • with e31. d4 Nf6 2. Nf3 d5 3. c4 e6 4. e3 b6 5. b3 Bb7 6. Bd3 Nbd7 7. O-O Bd6 8. Bb2 O-O 9. Nbd217 moves
  • with e3, Bb4+ Line1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 Bb710 moves
  • Averbakh Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 c5 6. O-O Be7 7. b3 O-O 8. Bb2 cxd4 9. Nxd417 moves
  • Spassky System1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e37 moves
  • Spassky System1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb78 moves
  • Spassky System1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd39 moves
  • Spassky System1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 d510 moves
  • Spassky System31. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 c510 moves
  • Spassky System31. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 c5 6. Nc3 cxd4 7. exd4 Be7 8. O-O d5 9. cxd5 Nxd518 moves

E1512 lines

Families hereQueen's Indian Defense

  • Buerger Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. d5 exd5 7. Ng513 moves
  • Fianchetto Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g37 moves
  • Fianchetto Variation, Check Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+10 moves
  • Fianchetto Variation, Check Variation, Intermezzo Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be712 moves
  • Fianchetto Variation, Check Variation, Modern Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Qe712 moves
  • Fianchetto Variation, Nimzowitsch Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba68 moves
  • Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qa49 moves
  • Fianchetto Variation, Nimzowitsch Variation, Quiet Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b39 moves
  • Fianchetto Variation, Nimzowitsch Variation, Timman's Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qb39 moves
  • Fianchetto Variation, Rubinstein Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. d5 exd5 7. Nh413 moves
  • Fianchetto Variation, Sämisch Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c510 moves
  • Fianchetto Variation, Traditional Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb78 moves

E163 lines

Families hereQueen's Indian Defense

  • Capablanca Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+10 moves
  • Riumin Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Be712 moves
  • Yates Variation1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a5 5. g3 b6 6. Bg2 Bb712 moves

E178 lines

Families hereQueen's Indian Defense

  • Anti-Queen's Indian System1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc311 moves
  • Classical Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O11 moves
  • Classical Variation, Polugaevsky Gambit1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. d5 exd5 8. Nh415 moves
  • Classical Variation, Taimanov Gambit1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. d5 exd5 8. Nd415 moves
  • Euwe Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. b313 moves
  • Fianchetto Variation, Kramnik Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Re113 moves
  • Opocensky Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Bd213 moves
  • Traditional Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be710 moves

E183 lines

Families hereQueen's Indian Defense

  • Classical Variation, Tiviakov Defense1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Na614 moves
  • Classical Variation, Traditional Variation1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc313 moves
  • Classical Variation, Traditional Variation, Nimzowitsch Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d514 moves

E191 lines

Families hereQueen's Indian Defense

  • Classical Variation, Traditional Variation, Main Line1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc317 moves

E207 lines

Families hereNimzo-Indian Defense

  • Nimzo-Indian Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb46 moves
  • Dilworth Gambit1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e47 moves
  • Kmoch Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f37 moves
  • Mikenas Attack1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qd37 moves
  • Romanishin Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g37 moves
  • Romanishin Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 O-O 6. Bg211 moves
  • Romanishin Variation, English Hybrid1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 O-O 7. Bg2 d5 8. cxd5 Nxd516 moves

E214 lines

Families hereNimzo-Indian Defense

  • Three Knights Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf37 moves
  • Three Knights Variation, Euwe Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. d5 Ne410 moves
  • Three Knights Variation, Korchnoi Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. d59 moves
  • Three Knights Variation, Shocron Gambit1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 c5 5. d5 b510 moves

E221 lines

Families hereNimzo-Indian Defense

  • Spielmann Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb37 moves

E234 lines

Families hereNimzo-Indian Defense

  • Spielmann Variation, Carlsbad Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Ne4 7. Bd2 Nxd214 moves
  • Spielmann Variation, Romanovsky Gambit1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc610 moves
  • Spielmann Variation, Stahlberg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Ne4 7. Bd2 Nxc514 moves
  • Spielmann Variation, Stahlberg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Ne4 7. Bd2 Nxc5 8. Qc2 f5 9. g317 moves

E242 lines

Families hereNimzo-Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a37 moves
  • Sämisch Variation, Botvinnik Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. e3 O-O 8. cxd5 Nxd516 moves

E253 lines

Families hereNimzo-Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd513 moves
  • Sämisch Variation, Keres Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc515 moves
  • Sämisch Variation, Romanovsky Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 f516 moves

E262 lines

Families hereNimzo-Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e311 moves
  • Sämisch Variation, O'Kelly Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 b612 moves

E271 lines

Families hereNimzo-Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O10 moves

E281 lines

Families hereNimzo-Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. a3 Bxc3+ 6. bxc311 moves

E292 lines

Families hereNimzo-Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 O-O14 moves
  • Sämisch Variation, Capablanca Variation1. 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 Ne818 moves

E302 lines

Families hereNimzo-Indian Defense

  • Leningrad Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg57 moves
  • Leningrad Variation, Averbakh Gambit1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 b512 moves

E311 lines

Families hereNimzo-Indian Defense

  • Leningrad Variation, Benoni Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 d612 moves

E323 lines

Families hereNimzo-Indian Defense

  • Classical Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc27 moves
  • Classical Variation, Keres Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b612 moves
  • Classical Variation, Vitolins-Adorjan Gambit1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b512 moves

E332 lines

Families hereNimzo-Indian Defense

  • Classical Variation, Milner-Barry Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d610 moves
  • Classical Variation, Zurich Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc68 moves

E342 lines

Families hereNimzo-Indian Defense

  • Classical Variation, Belyavsky Gambit1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 Qxd5 6. Nf3 Qf5 7. Qd1 e514 moves
  • Classical Variation, Noa Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d58 moves

E351 lines

Families hereNimzo-Indian Defense

  • Classical Variation, Noa Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd510 moves

E364 lines

Families hereNimzo-Indian Defense

  • Classical Variation, Noa Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a39 moves
  • Classical Variation, Noa Variation, Botvinnik Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Nc612 moves
  • Classical Variation, Noa Variation, Main Line1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne412 moves
  • Classical Variation, Romanishin Gambit1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 c512 moves

E373 lines

Families hereNimzo-Indian Defense

  • Classical Variation, Modern Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 c514 moves
  • Classical Variation, Noa Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc213 moves
  • Classical Variation, Noa Variation, San Remo Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 Nc6 8. e3 e516 moves

E383 lines

Families hereNimzo-Indian Defense

  • Classical Variation, Berlin Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c58 moves
  • Classical Variation, Berlin Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e3 d5 6. Nf3 c512 moves
  • Classical Variation, Berlin Variation, Steiner Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Bxc3+10 moves

E392 lines

Families hereNimzo-Indian Defense

  • Classical Variation, Berlin Variation, Macieja System1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 b614 moves
  • Classical Variation, Berlin Variation, Pirc Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O10 moves

E402 lines

Families hereNimzo-Indian Defense

  • Rubinstein System1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e37 moves
  • Rubinstein System, Taimanov Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc68 moves

E413 lines

Families hereNimzo-Indian Defense

  • Rubinstein System1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c58 moves
  • Rubinstein System, Hübner Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d614 moves
  • Rubinstein System, Hübner Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. O-O O-O16 moves

E423 lines

Families hereNimzo-Indian Defense

  • Rubinstein System, Rubinstein Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne29 moves
  • Rubinstein System, Rubinstein Variation, Main Line1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 O-O 7. a313 moves
  • Rubinstein System, Rubinstein Variation, Sherbakov Attack1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 O-O 7. c513 moves

E4312 lines

Families hereNimzo-Indian Defense

  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b68 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf311 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O12 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O13 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O c514 moves
  • St. Petersburg Variation1. 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 Be718 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Ne4 5. Qc2 f5 6. Nf3 b6 7. Bd3 Bb714 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 b6 7. O-O Bb7 8. Na4 Qe716 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Bxc3+ 5. bxc3 b6 6. e3 Bb7 7. Bd3 O-O 8. O-O15 moves
  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Ne4 6. Qc211 moves
  • St. Petersburg Variation1. 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-O17 moves
  • St. Petersburg Variation, with Ne41. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 Ne412 moves

E443 lines

Families hereNimzo-Indian Defense

  • St. Petersburg Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne29 moves
  • St. Petersburg Variation, American Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Ne410 moves
  • St. Petersburg Variation, Romanishin-Psakhis Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 c5 6. a3 Ba512 moves

E451 lines

Families hereNimzo-Indian Defense

  • St. Petersburg Variation, Fischer Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Ba610 moves

E463 lines

Families hereNimzo-Indian Defense

  • Normal Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O8 moves
  • Reshevsky Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne29 moves
  • Simagin Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne2 d5 6. a3 Bd612 moves

E471 lines

Families hereNimzo-Indian Defense

  • Normal Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd39 moves

E482 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Classical Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d510 moves
  • Ragozin Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O13 moves

E491 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Botvinnik System1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+ 7. bxc313 moves

E501 lines

Families hereNimzo-Indian Defense

  • Nimzo-Indian Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf39 moves

E513 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Ragozin Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d510 moves
  • Normal Variation, Sämisch Deferred1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. a311 moves
  • Ragozin Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O dxc414 moves

E522 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Schlechter Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b612 moves
  • Normal Variation, Schlechter Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d514 moves

E533 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Gligoric System1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c512 moves
  • Normal Variation, Gligoric System1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nbd714 moves
  • Normal Variation, Gligoric System, Keres Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O b614 moves

E543 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Gligoric System, Exchange Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc415 moves
  • Normal Variation, Gligoric System, Exchange Variation1. 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. exd417 moves
  • Normal Variation, Gligoric System, Smyslov Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Qe716 moves

E551 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Gligoric System, Bronstein Variation1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd716 moves

E561 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Gligoric System, Bernstein Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc614 moves

E571 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Gligoric System, Bernstein Defense1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 cxd418 moves

E581 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Bernstein Defense, Exchange Line1. 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. bxc317 moves

E592 lines

Families hereNimzo-Indian Defense

  • Normal Variation, Bernstein Defense1. 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. Bxc419 moves
  • Normal Variation, Bernstein Defense1. 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. Qc221 moves

E6014 lines

Families hereGrünfeld DefenseIndian DefenseKing's Indian DefenseQueen's Pawn

  • Counterthrust Variation1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d58 moves
  • Anti-Grünfeld, Adorjan Gambit1. d4 Nf6 2. c4 g6 3. d5 b56 moves
  • Anti-Grünfeld, Advance Variation1. d4 Nf6 2. c4 g6 3. d55 moves
  • Anti-Grünfeld, Alekhine Variation1. d4 Nf6 2. c4 g6 3. f35 moves
  • Anti-Grünfeld, Alekhine Variation, Leko Gambit1. d4 Nf6 2. c4 g6 3. f3 e56 moves
  • Anti-Grünfeld, Basman-Williams Attack1. d4 Nf6 2. c4 g6 3. h45 moves
  • West Indian Defense1. d4 Nf6 2. c4 g64 moves
  • Fianchetto Variation1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g37 moves
  • Fianchetto Variation, Immediate Fianchetto1. d4 Nf6 2. c4 g6 3. g35 moves
  • Normal Variation, King's Knight Variation1. d4 Nf6 2. Nf3 g6 3. c45 moves
  • Santasiere Variation1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. b47 moves
  • Semi-Classical Variation, Benoni Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. e3 d6 6. Be2 c612 moves
  • Semi-Classical Variation, Hollywood Variation1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e3 d6 6. Be2 Nc612 moves
  • Mengarini Attack1. d4 Nf6 2. c4 g6 3. Qc25 moves

E616 lines

Families hereKing's Indian Defense

  • King's Indian Defense1. d4 Nf6 2. c4 g6 3. Nc35 moves
  • Fianchetto Variation, Benjamin Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 O-O 6. Bg2 c6 7. O-O Qb614 moves
  • Semi-Classical Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. e3 d6 6. Be211 moves
  • Semi-Classical Variation, Exchange Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. e3 d6 6. Be2 Nbd7 7. O-O e5 8. dxe5 dxe516 moves
  • Semi-Classical Variation, Queenside Storm Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. e3 d6 6. Be2 Nbd7 7. O-O e5 8. b415 moves
  • Smyslov Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. Bg59 moves

E627 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Carlsbad Variation1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc612 moves
  • Fianchetto Variation, Delayed Fianchetto1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g39 moves
  • Fianchetto Variation, Kavalek Defense1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O c6 7. Nc3 Qa514 moves
  • Fianchetto Variation, Larsen Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 O-O 6. Bg2 c6 7. O-O Bf514 moves
  • Fianchetto Variation, Lesser Simagin (Spassky)1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bf514 moves
  • Fianchetto Variation, Simagin Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 O-O 6. Bg2 Nc6 7. O-O Bg414 moves
  • Fianchetto Variation, Uhlmann-Szabo System1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 e514 moves

E634 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Panno Variation1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a614 moves
  • Fianchetto Variation, Panno Variation, Blockade Line1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. d5 Na5 9. Nd2 c5 10. Qc2 e520 moves
  • Fianchetto Variation, Panno Variation, Donner Line1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8 11. b3 b5 12. Bb2 bxc4 13. bxc4 Bh626 moves
  • Fianchetto Variation, Panno Variation, Korchnoi Line1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. h3 Rb8 9. Be3 b5 10. Nd219 moves

E645 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Double Fianchetto Attack1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 e5 8. b315 moves
  • Fianchetto Variation, Hungarian Variation1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 a614 moves
  • Fianchetto Variation, Pterodactyl Variation1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 c5 5. Bg2 Qa5+10 moves
  • Fianchetto Variation, Yugoslav System1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 O-O 6. O-O c512 moves
  • Fianchetto Variation, Yugoslav Variation, Rare Line1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c512 moves

E652 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Yugoslav Variation1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O c5 7. Nc313 moves
  • Fianchetto Variation, Yugoslav Variation, Exchange Line1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O c5 7. Nc3 Nc6 8. dxc5 dxc516 moves

E661 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Yugoslav Variation, Advance Line1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O c5 7. Nc3 Nc6 8. d515 moves

E672 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Classical Fianchetto1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e514 moves
  • Fianchetto Variation, Debrecen Defense1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd712 moves

E682 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Classical Variation1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. e415 moves
  • Fianchetto Variation, Long Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 O-O 6. Bg2 Nbd7 7. O-O e5 8. e4 Re8 9. h3 exd4 10. Nxd4 Nc5 11. Re1 a522 moves

E691 lines

Families hereKing's Indian Defense

  • Fianchetto Variation, Classical Main Line1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. e4 c6 9. h317 moves

E704 lines

Families hereKing's Indian Defense

  • Accelerated Averbakh Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bg59 moves
  • Kramer Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nge29 moves
  • Normal Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e47 moves
  • Normal Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d68 moves

E712 lines

Families hereKing's Indian Defense

  • Karpov System1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be311 moves
  • Makogonov Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h39 moves

E722 lines

Families hereKing's Indian Defense

  • Normal Variation, Deferred Fianchetto1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. g39 moves
  • Pomar System1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. g3 O-O 6. Bg2 e5 7. Nge213 moves

E739 lines

Families hereKing's Indian Defense

  • Averbakh Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg511 moves
  • Averbakh Variation, Flexible Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 h612 moves
  • Averbakh Variation, Geller Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 Nbd712 moves
  • Averbakh Variation, Modern Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 Na612 moves
  • Averbakh Variation, Modern Defense, Burgess Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 Na6 7. Qd2 c614 moves
  • Averbakh Variation, Nc6 Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 Nc612 moves
  • Averbakh Variation, Spanish Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 a612 moves
  • Normal Variation, Standard Development1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be29 moves
  • Semi-Averbakh System1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Be311 moves

E743 lines

Families hereKing's Indian Defense

  • Averbakh Variation, Benoni Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c512 moves
  • Averbakh Variation, Benoni Defense, Advance Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5 7. d513 moves
  • Averbakh Variation, Benoni Defense, Exchange Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5 7. dxc513 moves

E751 lines

Families hereKing's Indian Defense

  • Averbakh Variation, Main Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5 7. d5 e614 moves

E763 lines

Families hereKing's Indian Defense

  • Four Pawns Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f49 moves
  • Four Pawns Attack, Dynamic Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d513 moves
  • Four Pawns Attack, Modern Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 Na610 moves

E774 lines

Families hereKing's Indian Defense

  • Four Pawns Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. f411 moves
  • Four Pawns Attack, Florentine Gambit1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. e517 moves
  • Four Pawns Attack, Normal Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be215 moves
  • Six Pawns Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Be2 c5 7. d5 e6 8. dxe6 fxe6 9. g4 Nc6 10. h419 moves

E781 lines

Families hereKing's Indian Defense

  • Four Pawns Attack, Fluid Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. Be213 moves

E791 lines

Families hereKing's Indian Defense

  • Four Pawns Attack, Exchange Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. Be2 cxd4 8. Nxd4 Nc6 9. Be317 moves

E801 lines

Families hereKing's Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f39 moves

E819 lines

Families hereKing's Indian Defense

  • Steiner Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg511 moves
  • Steiner Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 c5 7. d5 h6 8. Bf415 moves
  • Steiner Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 c5 7. d5 e6 8. Qd2 exd5 9. Nxd517 moves
  • Steiner Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 c5 7. d5 e6 8. Qd2 h6 9. Bxh617 moves
  • Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge211 moves
  • Sämisch Variation, Byrne Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c6 7. Bd3 a614 moves
  • Sämisch Variation, Normal Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O10 moves
  • Sämisch Variation, Sämisch Gambit1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c512 moves
  • Sämisch Variation, Sämisch Gambit Accepted1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c5 7. dxc5 dxc5 8. Qxd8 Rxd8 9. Bxc517 moves

E821 lines

Families hereKing's Indian Defense

  • Sämisch Variation, Double Fianchetto1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 b612 moves

E833 lines

Families hereKing's Indian Defense

  • Sämisch Variation, Panno Formation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Nge2 a614 moves
  • Sämisch Variation, Ruban Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Nge2 Rb814 moves
  • Sämisch Variation, Yates Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc612 moves

E841 lines

Families hereKing's Indian Defense

  • Sämisch Variation, Panno Main Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Nge2 a6 8. Qd2 Rb816 moves

E851 lines

Families hereKing's Indian Defense

  • Sämisch Variation, Orthodox Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e512 moves

E861 lines

Families hereKing's Indian Defense

  • Sämisch Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. Nge2 c614 moves

E873 lines

Families hereKing's Indian Defense

  • Sämisch Variation, Bronstein Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d5 Nh5 8. Qd2 Qh4+ 9. g3 Nxg3 10. Qf2 Nxf1 11. Qxh4 Nxe3 12. Ke223 moves
  • Sämisch Variation, Closed Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d513 moves
  • Sämisch Variation, Orthodox Variation, Bronstein Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d5 Nh5 8. Qd2 Qh4+ 9. g3 Nxg3 10. Qf2 Nxf1 11. Qxh4 Nxe3 12. Ke2 Nxc424 moves

E881 lines

Families hereKing's Indian Defense

  • Sämisch Variation, Closed Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d5 c614 moves

E891 lines

Families hereKing's Indian Defense

  • Sämisch Variation, Closed Variation, Main Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. Nge2 c6 8. d5 cxd516 moves

E903 lines

Families hereKing's Indian Defense

  • Larsen Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be311 moves
  • Normal Variation, Rare Defenses1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf39 moves
  • Zinnowitz Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Bg511 moves

E912 lines

Families hereKing's Indian Defense

  • Kazakh Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Na612 moves
  • Orthodox Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be211 moves

E925 lines

Families hereKing's Indian Defense

  • Exchange Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. dxe513 moves
  • Orthodox Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e512 moves
  • Orthodox Variation, Gligoric-Taimanov System1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. Be313 moves
  • Petrosian Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d513 moves
  • Petrosian Variation, Stein Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 a514 moves

E932 lines

Families hereKing's Indian Defense

  • Petrosian Variation, Keres Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 Nbd7 8. Bg5 h6 9. Bh4 g5 10. Bg3 Nh5 11. h421 moves
  • Petrosian Variation, Normal Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 Nbd714 moves

E946 lines

Families hereKing's Indian Defense

  • Orthodox Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O13 moves
  • Orthodox Variation, Donner Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O c614 moves
  • Orthodox Variation, Glek Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Na614 moves
  • Orthodox Variation, Positional Defense1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 g6 6. Be2 Bg7 7. O-O O-O14 moves
  • Orthodox Variation, Positional Defense, Closed Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. d515 moves
  • Orthodox Variation, Ukrainian Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O a514 moves

E951 lines

Families hereKing's Indian Defense

  • Orthodox Variation1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nbd7 8. Re115 moves

E961 lines

Families hereKing's Indian Defense

  • Orthodox Variation, Positional Defense, Main Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nbd7 8. Re1 c6 9. Bf1 a518 moves

E976 lines

Families hereKing's Indian Defense

  • Orthodox Variation, Aronin-Taimanov Defense1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc614 moves
  • Orthodox Variation, Bayonet Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b417 moves
  • Orthodox Variation, Bayonet Attack, Sokolov's Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 Nh5 10. Re119 moves
  • Orthodox Variation, Bayonet Attack, Yepishin's Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 Nh5 10. Qc219 moves
  • Orthodox Variation, Korchnoi Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Bd217 moves
  • Orthodox Variation, Modern System1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Nd217 moves

E983 lines

Families hereKing's Indian Defense

  • Orthodox Variation, Classical System1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne117 moves
  • Orthodox Variation, Classical System, Kozul Gambit1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. Rc1 Ng6 14. c527 moves
  • Orthodox Variation, Classical System, Neo-Classical Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be319 moves

E992 lines

Families hereKing's Indian Defense

  • Orthodox Variation, Classical System, Benko Attack1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. f3 f5 11. g421 moves
  • Orthodox Variation, Classical System, Traditional Line1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. f3 f520 moves

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