ecocodes
Volume A · Flank openings‹ A44A46 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

A45 Indian Defense

Also filed here: Trompowsky Attack, Queen’s Pawn Game, Amazon Attack, Basque Opening, Canard Opening, Paleface Attack.

A45 holds 32 named lines from seven openings, most of them (16) under Indian Defense. It leaves A40 (Queen’s Pawn Game) with 1...Nf6. Lines of 193 other codes continue from its position, the third-widest spread of all 500 codes. With 32 named lines it is the largest code of the 8 Indian Defense codes. At two plies, its reference line is the shortest of the 8 Indian Defense codes.

Score sheet
#WhiteBlack
1d4Nf6

The move that completes A45

The reference line of A46 plays all of these moves and continues beyond them; A45 is the position reached at 1...Nf6.

  1. 1...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.

Lines filed under A45

All 32 share their first two plies, the whole reference line and then split 11 ways at White’s move 2.

NameAfter the shared startPliesAt the end
Indian Defense(the shared start itself)2
Basque Opening2.b33
Canard Opening2.f43
Indian Defense: Accelerated London System2.Bf43
Indian Defense: Gibbins-Weidenhagen Gambit2.g43
Indian Defense: Omega Gambit2.e43
Indian Defense: Pawn Push Variation2.d53
Indian Defense: Tartakower Attack2.g33
Paleface Attack2.f33
Trompowsky Attack2.Bg53
Indian Defense: Gibbins-Weidenhagen Gambit Accepted2.g4 Nxg44Black +1
Indian Defense: Gibbins-Weidenhagen Gambit, Oshima Defense2.g4 e54
Indian Defense: Lazard Gambit2.Nd2 e54
Indian Defense: Maddigan Gambit2.Nc3 e54
Indian Defense: Reversed Chigorin Defense2.Nc3 c54
Queen’s Pawn Game: Chigorin Variation2.Nc3 d54
Trompowsky Attack: Classical Defense2.Bg5 e64
Amazon Attack: Siberian Attack2.Nc3 d5 3.Qd35
Indian Defense: Gedult Attack2.f3 d5 3.g45
Indian Defense: Paleface Attack, Blackmar-Diemer Gambit Deferred2.f3 d5 3.e45
Queen’s Pawn Game: Veresov, Richter Attack2.f3 d5 3.Nc35
Trompowsky Attack: Classical Defense, Big Center Variation2.Bg5 e6 3.e45
Trompowsky Attack: Edge Variation2.Bg5 Ne4 3.Bh45
Trompowsky Attack: Raptor Variation2.Bg5 Ne4 3.h45
Trompowsky Attack: Borg Variation2.Bg5 Ne4 3.Bf4 g56
Indian Defense: Gibbins-Weidenhagen Gambit, Maltese Falcon2.g4 Nxg4 3.f3 Nf6 4.e47Black +1
Indian Defense: Omega Gambit, Arafat Gambit2.e4 Nxe4 3.Bd3 Nf6 4.Bg57Black +1
Trompowsky Attack: Poisoned Pawn Variation2.Bg5 c5 3.d5 Qb6 4.Nc37
Trompowsky Attack: Raptor Variation, Hergert Gambit2.Bg5 Ne4 3.h4 Nxg5 4.hxg5 e58
Indian Defense: Gibbins-Weidenhagen Gambit, Stummer Gambit2.g4 Nxg4 3.e4 d6 4.Be2 Nf6 5.Nc39Black +1
Trompowsky Attack: Edge Variation, Hergert Gambit2.Bg5 Ne4 3.Bh4 d5 4.f3 Nf6 5.Nc3 Bf5 6.e411
Trompowsky Attack: Edge Variation, Hergert Gambit2.Bg5 Ne4 3.Bh4 c6 4.Nd2 Qa5 5.c3 Nxd2 6.Qxd2 d5 7.e413

The road to A45

  1. 1.d4A40 Queen’s Pawn Game
  2. 1...Nf6A45

The position after 1...Nf6

Black has brought out the knight on f6; White has not yet moved a knight or bishop. White is to move and has 28 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed01Moves spent on pawns10Pawns on d4, e4, d5, e510Squares attacked in the other half42not castlednot castled

Codes that branch off from A45

The reference lines of three other codes leave A45 from two of its named positions; “From” gives the last part of that position’s name.

CodeFromMovesReference line
A46Indian Defense2.Nf3Indian Defense: Knights Variation
A50Indian Defense2.c4Indian Defense: Normal Variation
D01Chigorin Variation3.Bg5Richter-Veresov Attack

Closest boards in other codes

CodeLineDiffers on
A05Zukertort Openingfour squares: g1, d2, f3, d4
A15English Opening: Anglo-Indian Defensefour squares: c2, d2, c4, d4
A41Queen’s Pawn Gamefour squares: d6, f6, d7, g8
A43Benoni Defense: Old Benonifour squares: c5, f6, c7, g8
A47Pseudo Queen’s Indian Defensefour squares: g1, f3, b6, b7
A48East Indian Defensefour squares: g1, f3, g6, g7
A51Indian Defense: Budapest Gambitfour squares: c2, c4, e5, e7

Where lines continue from here

Besides the codes above, they belong to A31, A43, A47, A48, A49, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A62, A63, A64, A65, A66, A67, A68, A69, A70, A71, A72, A73, A74, A75, A76, A77, A78, A79, D00, D02, D05, D30, D32, D34, D35, D36, D37, D38, D39, D40, D41, D42, D44, D53, D54, D55, D56, D57, D58, D60, D62, D63, D64, D68, D70, D71, D72, D73, D74, D75, D76, D77, D78, D79, D80, D81, D82, D83, D84, D85, D86, D87, D88, D89, D90, D91, D92, D93, D94, D95, D96, D97, D98, D99, E00, E01, E02, E03, E04, E05, E06, E07, E08, E09, E10, E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23, E24, E25, E26, E27, E28, E29, E30, E31, E32, E33, E34, E35, E36, E37, E38, E39, E40, E41, E42, E43, E44, E45, E46, E47, E48, E49, E50, E51, E52, E53, E54, E55, E56, E57, E58, E59, E60, E61, E62, E63, E64, E65, E66, E67, E68, E69, E70, E71, E72, E73, E74, E75, E76, E77, E78, E79, E80, E81, E82, E83, E84, E85, E86, E87, E88, E89, E90, E91, E92, E93, E94, E95, E96, E97, E98, E99.

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
  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 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

  • Queen’s Pawn Game: Chigorin Variation is also reached inside D01 Rapport-Jobava System, whose order is 1.d4 d5 2.Nc3 Nf6.

Open this line in the finderAll Indian Defense codes