ecocodes
Volume E · Indian defenses‹ E05E07 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

E06 Catalan Opening: Closed

E06 holds four named lines, all under the name Catalan Opening. It leaves E01 (Catalan Opening: Open Defense) with 4...Be7 5.Nf3. Lines of four other codes continue from its position, the third-widest spread of the 10 Catalan Opening codes. Its deepest line, Catalan Opening: Closed, runs to 9...Na6, the third-longest of the 10 Catalan Opening codes. Lines filed under E05, E08 and E09 reach one of its named positions by a different move order.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3g3d5
4Bg2Be7
5Nf3

The move that completes E06

The reference line of E07 plays all of these moves and continues beyond them; E06 is the position reached at 5.Nf3.

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

Lines filed under E06

They begin with two different first moves.

NameAfter the shared startPliesAt the end
Catalan Opening: Closed1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf39
Catalan Opening: Closed1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.d4 O-O 6.O-O c612both castled
Catalan Opening: Closed1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Bb4+ 5.Bd2 Be7 6.Bg2 O-O 7.O-O c6 8.Bf4 b616both castled
Catalan Opening: Closed1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O c6 7.Qc2 b6 8.Nbd2 Bb7 9.e4 Na618both castled

Catalan Opening: Closed

  1. 1.c4 The c-pawn advances two squares to c4, covering b5 and d5, opening a line for the queen on d1.
  2. 1...e6 The e-pawn advances to e6, covering d5 and f5, opening a line for the queen on d8 and the bishop on f8.
  3. 2.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1.
  4. 2...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.
  5. 3.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.

Catalan Opening: Closed

  1. 1.d4 The d-pawn advances two squares to d4, covering c5 and e5, opening a line for the bishop on c1 and the queen on d1.
  2. 1...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.
  3. 2.c4 The c-pawn advances two squares to c4, covering b5 and d5, opening a line for the queen on d1.
  4. 2...e6 The e-pawn advances to e6, covering d5 and f5, opening a line for the queen on d8 and the bishop on f8.
  5. 3.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1.

Catalan Opening: Closed

  1. 1.d4 The d-pawn advances two squares to d4, covering c5 and e5, opening a line for the bishop on c1 and the queen on d1.
  2. 1...Nf6 The knight leaves g8 for f6, opening a line for the rook on h8.
  3. 2.c4 The c-pawn advances two squares to c4, covering b5 and d5, opening a line for the queen on d1.
  4. 2...e6 The e-pawn advances to e6, covering d5 and f5, opening a line for the queen on d8 and the bishop on f8.
  5. 3.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.

The road to E06

  1. 1.d4 … 3.g3four earlier stops: A40, A45, A50, E00
  2. 3...d5E00 Catalan Opening
  3. 4.Bg2E01 Open Defense
  4. 5.Nf3E06

The position after 5.Nf3

White has brought out the knight on f3 and bishop on g2; Black the knight on f6 and bishop on e7. Black could capture with dxc4. Undefended and attacked: the pawn on c4. Black is to move and has 33 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed22Moves spent on pawns32Pawns on d4, e4, d5, e511Squares attacked in the other half65not castlednot castled

Codes that branch off from E06

The reference lines of one other code leave E06 from the position after 5.Nf3, each with its own moves.

CodeMovesReference line
E075...O-O 6.O-O Nbd7Catalan Opening: Closed

Closest boards in other codes

CodeLineDiffers on
E05Catalan Opening: Open Defense, Classical Linetwo squares: c4, d5
D73Neo-Grünfeld Defense: with g3four squares: e6, g6, e7, g7
E04Catalan Opening: Open Defensefour squares: c4, d5, e7, f8
E17Queen’s Indian Defense: Traditional Variationfive squares: d5, b6, b7, d7, c8
A14English Opening: Agincourt Defense, Neo-Catalan Declinedsix squares: e1, f1, g1, h1, d2, d4
A91Dutch Defense: Classical Variationsix squares: g1, f3, d5, f5, d7, f7
E02Catalan Opening: Open Defensesix squares: g1, f3, c4, d5, e7, f8

Where lines continue from here

Besides the codes above, they belong to E05, E08, E09.

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

  • Catalan Opening: Closed is also reached inside E05 Catalan Opening: Open Defense, Classical Line, whose order is 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2.
  • Catalan Opening: Closed is also reached inside E08 Catalan Opening: Closed, Spassky Gambit, whose order is 1.d4 Nf6 2.c4 e6 3.g3 Be7 4.Bg2 d5 5.Nf3.
  • Catalan Opening: Closed is also reached inside E09 Catalan Opening: Closed, Main Line, whose order is 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2 O-O 6.O-O c6.

Open this line in the finderAll Catalan Opening codes