ecocodes
Volume E · Indian defenses‹ E14E16 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

E15 Queen’s Indian Defense: Fianchetto Variation

E15 holds 12 named lines, all under the name Queen’s Indian Defense. It leaves E12 (Queen’s Indian Defense) with 4.g3. Lines of five other codes continue from its position, the second-widest spread of the 8 Queen’s Indian Defense codes. With 12 named lines it is the third-largest code of the 8 Queen’s Indian Defense codes. At seven plies, its reference line is the second-shortest of the 8 Queen’s Indian Defense codes.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3Nf3b6
4g3

The move that completes E15

The reference line of E16 plays all of these moves and continues beyond them; E15 is the position reached at 4.g3.

  1. 4.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.

Lines filed under E15

All 12 share their first seven plies, the whole reference line and then split two ways at Black’s move 4.

NameAfter the shared startPliesAt the end
Queen’s Indian Defense: Fianchetto Variation(the shared start itself)7
Queen’s Indian Defense: Fianchetto Variation, Nimzowitsch Variation4...Ba68
Queen’s Indian Defense: Fianchetto Variation, Traditional Line4...Bb78
Queen’s Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack4...Ba6 5.Qa49
Queen’s Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Quiet Line4...Ba6 5.b39
Queen’s Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Timman’s Line4...Ba6 5.Qb39
Queen’s Indian Defense: Fianchetto Variation, Check Variation4...Ba6 5.b3 Bb4+10check
Queen’s Indian Defense: Fianchetto Variation, Sämisch Variation4...Bb7 5.Bg2 c510
Queen’s Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line4...Ba6 5.b3 Bb4+ 6.Bd2 Be712
Queen’s Indian Defense: Fianchetto Variation, Check Variation, Modern Line4...Ba6 5.b3 Bb4+ 6.Bd2 Qe712
Queen’s Indian Defense: Buerger Variation4...Bb7 5.Bg2 c5 6.d5 exd5 7.Ng513Black +1
Queen’s Indian Defense: Fianchetto Variation, Rubinstein Variation4...Bb7 5.Bg2 c5 6.d5 exd5 7.Nh413Black +1

The road to E15

  1. 1.d4 … 2...e6three earlier stops: A40, A45, A50
  2. 3.Nf3E10 Anti-Nimzo-Indian
  3. 3...b6E12 Queen’s Indian Defense
  4. 4.g3E15

The position after 4.g3

White has brought out the knight on f3; Black the knight on f6. Black is to move and has 29 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed11Moves spent on pawns32Pawns on d4, e4, d5, e510Squares attacked in the other half64not castlednot castled

Codes that branch off from E15

The reference lines of two other codes leave E15 from the position after 4...Bb7, each with its own moves.

CodeMovesReference line
E165.Bg2 Bb4+Queen’s Indian Defense: Capablanca Variation
E175.Bg2 Be7Queen’s Indian Defense: Traditional Variation

Closest boards in other codes

CodeLineDiffers on
E00Catalan Openingfour squares: g1, f3, b6, b7
E10Indian Defense: Anti-Nimzo-Indianfour squares: g2, g3, b6, b7
E14Queen’s Indian Defense: Spassky Systemfour squares: e2, g2, e3, g3
A47Pseudo Queen’s Indian Defensesix squares: c2, g2, g3, c4, e6, e7
E04Catalan Opening: Open Defensesix squares: f1, g2, c4, b6, b7, d7
E11Bogo-Indian Defensesix squares: g2, g3, b4, b6, b7, f8
A32English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defenseseven squares: g2, f3, g3, d4, b6, b7, c7

Where lines continue from here

Besides the codes above, they belong to E11, E18, E19.

Volume E

  1. 00
  2. 01
  3. 02
  4. 03
  5. 04
  6. 05
  7. 06
  8. 07
  9. 08
  10. 09
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
  16. 15
  17. 16
  18. 17
  19. 18
  20. 19
  21. 20
  22. 21
  23. 22
  24. 23
  25. 24
  26. 25
  27. 26
  28. 27
  29. 28
  30. 29
  31. 30
  32. 31
  33. 32
  34. 33
  35. 34
  36. 35
  37. 36
  38. 37
  39. 38
  40. 39
  41. 40
  42. 41
  43. 42
  44. 43
  45. 44
  46. 45
  47. 46
  48. 47
  49. 48
  50. 49
  51. 50
  52. 51
  53. 52
  54. 53
  55. 54
  56. 55
  57. 56
  58. 57
  59. 58
  60. 59
  61. 60
  62. 61
  63. 62
  64. 63
  65. 64
  66. 65
  67. 66
  68. 67
  69. 68
  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
  75. 74
  76. 75
  77. 76
  78. 77
  79. 78
  80. 79
  81. 80
  82. 81
  83. 82
  84. 83
  85. 84
  86. 85
  87. 86
  88. 87
  89. 88
  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99

Open this line in the finderAll Queen’s Indian Defense codes