ecocodes
Volume E · Indian defenses‹ E09E11 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

E10 Indian Defense: Anti-Nimzo-Indian

Also filed here: Blumenfeld Countergambit.

E10 holds seven named lines from two openings, most of them (four) under Blumenfeld Countergambit. It leaves A50 (Indian Defense: Normal Variation) with 2...e6 3.Nf3. At five plies, its reference line is the second-longest of the 8 Indian Defense codes. Its deepest line, Blumenfeld Countergambit Accepted, runs to 6...d5, the second-longest of the 8 Indian Defense codes. Black’s pieces and pawns attack four squares in White’s half, the third-highest count of the 8 Indian Defense codes.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3Nf3

The move that completes E10

The reference line of A61 plays all of these moves and continues beyond them; E10 is the position reached at 3.Nf3.

  1. 3.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1.

Lines filed under E10

All seven share their first five plies, the whole reference line and then split three ways at Black’s move 3.

NameAfter the shared startPliesAt the end
Indian Defense: Anti-Nimzo-Indian(the shared start itself)5
Indian Defense: Dzindzi-Indian Defense3...a66
Indian Defense: Döry Indian3...Ne46
Blumenfeld Countergambit3...c5 4.d5 b58
Blumenfeld Countergambit: Duz-Khotimirsky Variation3...c5 4.d5 b5 5.Bg59
Blumenfeld Countergambit Accepted3...c5 4.d5 b5 5.dxe6 fxe6 6.cxb5 d512White +1
Blumenfeld Countergambit: Spielmann Variation3...c5 4.d5 b5 5.Bg5 exd5 6.cxd5 h612

The road to E10

  1. 1.d4one earlier stop: A40
  2. 1...Nf6A45 Indian Defense
  3. 2.c4A50 Normal Variation
  4. 3.Nf3E10

The position after 3.Nf3

White has brought out the knight on f3; Black the knight on f6. Black is to move and has 28 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed11Moves spent on pawns21Pawns on d4, e4, d5, e510Squares attacked in the other half64not castlednot castled

Codes that branch off from E10

The reference lines of four other codes leave E10 from the position after 3.Nf3, each with its own moves.

CodeMovesReference line
A613...c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6Benoni Defense
D373...d5 4.Nc3Queen’s Gambit Declined: Three Knights Variation
E113...Bb4+Bogo-Indian Defense
E123...b6Queen’s Indian Defense

Closest boards in other codes

CodeLineDiffers on
A32English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defensethree squares: f3, d4, c7
A31English Opening: Symmetrical Variation, Anti-Benoni Variationfour squares: c5, e6, c7, e7
A46Indian Defense: Knights Variationfour squares: c2, c4, e6, e7
A51Indian Defense: Budapest Gambitfour squares: g1, f3, e5, e6
D23Queen’s Gambit Acceptedfour squares: c4, e6, d7, e7
D26Queen’s Gambit Accepted: Normal Variation, Traditional Systemfour squares: e2, e3, c4, d7
E00Catalan Openingfour squares: g1, g2, f3, g3

Where lines continue from here

One hundred and fifty-seven named lines filed under other codes pass through the position after 3.Nf3. Besides the codes above, they belong to A70, A71, A75, A78, D30, D32, D35, D36, D38, D39, D40, D41, D42, D44, D55, D56, D58, D60, D62, D63, D64, D68, E04, E05, E06, E08, E09, E13, E14, E15, E16, E17, E18, E19, E21.

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

Volume D

  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
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  61. 60
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  63. 62
  64. 63
  65. 64
  66. 65
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  89. 88
  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99

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
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  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

Other move orders

  • Indian Defense: Anti-Nimzo-Indian is also reached inside D30 Queen’s Gambit Declined: Capablanca Variation, whose order is 1.d4 Nf6 2.Nf3 e6 3.c4.
  • Indian Defense: Anti-Nimzo-Indian is also reached inside E08 Catalan Opening: Closed, Zagoryansky Variation, whose order is 1.d4 e6 2.c4 Nf6 3.Nf3.

Open this line in the finderAll Indian Defense codes