ecocodes
Volume A · Flank openings‹ A45A47 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

A46 Indian Defense: Knights Variation

Also filed here: Torre Attack, Queen’s Pawn Game, Döry Defense, Yusupov-Rubinstein System.

A46 holds 15 named lines from five openings, most of them (seven) under Indian Defense. It leaves A45 (Indian Defense) with 2.Nf3. Black, to move in that position, has 22 legal moves, level for the fewest of the 8 Indian Defense codes. With 15 named lines it is the second-largest code of the 8 Indian Defense codes. At three plies, its reference line is the second-shortest of the 8 Indian Defense codes.

Score sheet
#WhiteBlack
1d4Nf6
2Nf3

The move that completes A46

The reference line of A47 plays all of these moves and continues beyond them; A46 is the position reached at 2.Nf3.

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

Lines filed under A46

All 15 share their first three plies, the whole reference line and then split seven ways at Black’s move 2.

NameAfter the shared startPlies
Indian Defense: Knights Variation(the shared start itself)3
Döry Defense2...Ne44
Indian Defense: Czech-Indian2...c64
Indian Defense: Knights Variation, Alburt-Miles Variation2...a64
Indian Defense: Polish Variation2...b54
Indian Defense: Spielmann-Indian2...c54
Indian Defense: Wade-Tartakower Defense2...d64
Indian Defense: London System2...e6 3.Bf45
Torre Attack: Classical Defense2...e6 3.Bg55
Yusupov-Rubinstein System2...e6 3.e35
Torre Attack: Classical Defense, Nimzowitsch Variation2...e6 3.Bg5 h66
Queen’s Pawn Game: Veresov Attack, Classical Defense2...e6 3.Nc3 d5 4.Bg57
Torre Attack: Wagner Gambit2...e6 3.Bg5 c5 4.e47
Torre Attack: Classical Defense, Petrosian Gambit2...e6 3.Bg5 c5 4.e3 b6 5.d59
Queen’s Pawn Game: Torre Attack, Breyer Variation2...e6 3.Bg5 d5 4.e3 c5 5.c3 Qb610

The road to A46

  1. 1.d4A40 Queen’s Pawn Game
  2. 1...Nf6A45 Indian Defense
  3. 2.Nf3A46

The position after 2.Nf3

White has brought out the knight on f3; Black the knight on f6.

WhiteBlackMaterial (pawn units)3939Minor pieces developed11Moves spent on pawns10Pawns on d4, e4, d5, e510Squares attacked in the other half42not castlednot castled

Codes that branch off from A46

The reference lines of two other codes leave A46 from the position after 2.Nf3, each with its own moves.

CodeMovesReference line
A472...b6Pseudo Queen’s Indian Defense
A482...g6East Indian Defense

Closest boards in other codes

CodeLineDiffers on
A05Zukertort Openingtwo squares: d2, d4
D23Queen’s Gambit Acceptedthree squares: c2, c4, d7
A04Zukertort Openingfour squares: d2, d4, f6, g8
A31English Opening: Symmetrical Variation, Anti-Benoni Variationfour squares: c2, c4, c5, c7
A40Queen’s Pawn Gamefour squares: g1, f3, f6, g8
A49Indian Defense: Przepiorka Variationfour squares: g2, g3, g6, g7
A50Indian Defense: Normal Variationfour squares: g1, c2, f3, c4

Where lines continue from here

Forty-five named lines filed under other codes pass through the position after 2.Nf3. Besides the codes above, they belong to A43, A49, D02, D05, D30, D75, D77, D85, E14, E60.

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
  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
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  80. 79
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  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 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

Other move orders

  • Indian Defense: Czech-Indian is also reached inside A40 Slav Indian: Kudischewitsch Gambit, whose order is 1.d4 c6 2.Nf3 Nf6.

Open this line in the finderAll Indian Defense codes