ecocodes
Volume A · Flank openings‹ A15A17 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

A16 English Opening: Anglo-Indian Defense, Queen’s Knight Variation

A16 holds seven named lines, all under the name English Opening. It leaves A15 (English Opening: Anglo-Indian Defense) with 2.Nc3. That final move, by the knight, opens a line for the rook on a1. Of all other reference positions, the board of A17 (Anglo-Indian Defense, Hedgehog System) comes closest, two squares apart.

Score sheet
#WhiteBlack
1c4Nf6
2Nc3

Lines filed under A16

All seven share their first three plies, the whole reference line.

NameAfter the shared startPliesAt the end
English Opening: Anglo-Indian Defense, Queen’s Knight Variation(the shared start itself)3
English Opening: Anglo-Grünfeld Defense2...d54
English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation2...d5 3.cxd5 Nxd5 4.Nf37
English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation2...d5 3.cxd5 Nxd5 4.Nf3 g68
English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation2...d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nb610
English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation2...d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc310Black +3
English Opening: Anglo-Grünfeld Defense, Korchnoi Variation2...d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3 Bg7 6.Bg2 e512

The road to A16

  1. 1.c4A10 English Opening
  2. 1...Nf6A15 Anglo-Indian Defense
  3. 2.Nc3A16

The position after 2.Nc3

White has brought out the knight on c3; Black the knight on f6. Black is to move and has 22 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed11Moves spent on pawns10Pawns on d4, e4, d5, e500Squares attacked in the other half22not castlednot castled

Codes that branch off from A16

The reference lines of one other code leave A16 from the position after 2.Nc3, each with its own moves.

CodeMovesReference line
A172...e6English Opening: Anglo-Indian Defense, Hedgehog System

Closest boards in other codes

CodeLineDiffers on
A22English Opening: King’s English Variation, Two Knights Variationtwo squares: e5, e7
A00Van Geet Openingfour squares: c2, c4, f6, g8
A10English Openingfour squares: b1, c3, f6, g8
A18English Opening: Mikenas-Carls Variationfour squares: e2, e4, e6, e7
A21English Opening: King’s English Variation, Reversed Sicilianfour squares: e5, f6, e7, g8
A34English Opening: Symmetrical Variation, Normal Variationfour squares: c5, f6, c7, g8
A50Indian Defense: Normal Variationfour squares: b1, d2, c3, d4

Where lines continue from here

Six named lines filed under other codes pass through the position after 2.Nc3. Besides the codes above, they belong to A15, A34.

Volume A

  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 English Opening codes