ecocodes
Volume E · Indian defenses‹ E55E57 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

E56 Nimzo-Indian Defense: Normal Variation, Gligoric System, Bernstein Defense

E56 holds a single named line. It leaves E53 (Nimzo-Indian Defense: Normal Variation, Gligoric System) with 7.O-O Nc6. White, to move in that position, has 38 legal moves, the third-highest count of the 40 Nimzo-Indian Defense codes. Both kings have castled by the end of the reference line, White on move 7 and Black on move 4.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3Nc3Bb4
4e3O-O
5Bd3d5
6Nf3c5
7O-ONc6

The move that completes E56

The reference line of E57 plays all of these moves and continues beyond them; E56 is the position reached at 7...Nc6.

  1. 7...Nc6 The knight leaves b8 for c6, opening a line for the rook on a8.

The road to E56

  1. 1.d4 … 5.Bd3seven earlier stops: A40, A45, A50, E20, E40, E46, E47
  2. 5...d5E48 Classical Defense
  3. 6...c5E53 Gligoric System
  4. 7...Nc6E56

The position after 7...Nc6

White has brought out the knight on c3, knight on f3 and bishop on d3; Black the knight on c6, knight on f6 and bishop on b4. White could capture with Bxh7+, Nxd5, cxd5, dxc5.

WhiteBlackMaterial (pawn units)3939Minor pieces developed33Moves spent on pawns33Pawns on d4, e4, d5, e511Squares attacked in the other half87castled kingside, move 7castled kingside, move 4

Codes that branch off from E56

The reference lines of two other codes leave E56 from the position after 7...Nc6, each with its own moves.

CodeMovesReference line
E578.a3 dxc4 9.Bxc4 cxd4Nimzo-Indian Defense: Normal Variation, Gligoric System, Bernstein Defense
E588.a3 Bxc3 9.bxc3Nimzo-Indian Defense: Normal Variation, Bernstein Defense, Exchange Line

Closest boards in other codes

CodeLineDiffers on
E54Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variationfive squares: d3, c4, d5, c6, b8
E55Nimzo-Indian Defense: Normal Variation, Gligoric System, Bronstein Variationfive squares: d3, c4, d5, c6, d7
E59Nimzo-Indian Defense: Normal Variation, Bernstein Defenseeight squares: a2, b2, a3, c3, d3, b4, c4, d5
E48Nimzo-Indian Defense: Normal Variation, Classical Defensenine squares: e1, f1, g1, h1, f3, c5, c6, c7 …
E51Nimzo-Indian Defense: Normal Variation, Ragozin Variationnine squares: e1, f1, g1, h1, d3, c5, c6, c7 …
E52Nimzo-Indian Defense: Normal Variation, Schlechter Defenseten squares: e1, f1, g1, h1, c5, b6, c6, b7 …
E47Nimzo-Indian Defense: Normal Variation11 squares: e1, f1, g1, h1, f3, c5, d5, c6 …

Where lines continue from here

Three named lines filed under other codes pass through the position after 7...Nc6. Besides the codes above, they belong to E59.

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 Nimzo-Indian Defense codes