ecocodes
Volume D · Closed and semi-closed games‹ D79D81 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

D80 Grünfeld Defense

D80 holds seven named lines, all under the name Grünfeld Defense. It leaves E61 (King’s Indian Defense) with 3...d5. Lines of 19 other codes continue from its position, the widest spread of the 20 Grünfeld Defense codes. At six plies, its reference line is the shortest of the 20 Grünfeld Defense codes. With seven named lines it is level for the largest code of the 20 Grünfeld Defense codes.

Score sheet
#WhiteBlack
1d4Nf6
2c4g6
3Nc3d5

The move that completes D80

The reference line of D81 plays all of these moves and continues beyond them; D80 is the position reached at 3...d5.

  1. 3...d5 The d-pawn advances two squares to d5, covering c4 and e4, opening a line for the bishop on c8 and the queen on d8.

Lines filed under D80

All seven share their first six plies, the whole reference line and then split four ways at White’s move 4.

NameAfter the shared startPlies
Grünfeld Defense(the shared start itself)6
Grünfeld Defense: Gibbon Gambit4.g47
Grünfeld Defense: Lutikov Variation4.f37
Grünfeld Defense: Stockholm Variation4.Bg57
Grünfeld Defense: Zaitsev Gambit4.h47
Grünfeld Defense: Lutikov Variation, Murrey Attack4.f3 c5 5.cxd5 Nxd5 6.Na411
Grünfeld Defense: Lundin Variation4.Bg5 Ne4 5.Nxe4 dxe4 6.Qd2 c512

The road to D80

  1. 1.d4 … 2.c4three earlier stops: A40, A45, A50
  2. 2...g6E60 West Indian Defense
  3. 3.Nc3E61 King’s Indian Defense
  4. 3...d5D80

The position after 3...d5

White has brought out the knight on c3; Black the knight on f6. White could capture with Nxd5, cxd5. White is to move and has 33 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed11Moves spent on pawns22Pawns on d4, e4, d5, e511Squares attacked in the other half64not castlednot castled

Codes that branch off from D80

The reference lines of four other codes leave D80 from the position after 3...d5, each with its own moves.

CodeMovesReference line
D814.Qb3Grünfeld Defense: Russian Variation, Accelerated Variation
D824.Bf4Grünfeld Defense: Brinckmann Attack
D854.cxd5 Nxd5Grünfeld Defense: Exchange Variation
D904.Nf3Grünfeld Defense: Three Knights Variation

Closest boards in other codes

CodeLineDiffers on
D35Queen’s Gambit Declined: Normal Defensefour squares: e6, g6, e7, g7
D70Neo-Grünfeld Defense: Goglidze Attackfour squares: b1, f2, c3, f3
E60Indian Defense: West Indian Defensefour squares: b1, c3, d5, d7
A16English Opening: Anglo-Indian Defense, Queen’s Knight Variationsix squares: d2, d4, d5, g6, d7, g7
A50Indian Defense: Normal Variationsix squares: b1, c3, d5, g6, d7, g7
A53Old Indian Defensesix squares: b1, c3, d5, d6, g6, g7
A85Dutch Defense: Queen’s Knight Variationsix squares: d5, f5, g6, d7, f7, g7

Where lines continue from here

Besides the codes above, they belong to D83, D84, D86, D87, D88, D89, D91, D92, D93, D94, D95, D96, D97, D98, D99.

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

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