ecocodes
Volume C · Open games and the French Defense‹ C07C09 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

C08 French Defense: Tarrasch Variation, Open System

C08 holds two named lines, all under the name French Defense. It leaves C07, a position of the same name, with 4.exd5 exd5. That final move, by the e-pawn, covers c4 and e4 and opens a line for the bishop on c8. Of all other reference positions, the board of C03 (Tarrasch Variation) comes closest, four squares apart.

Score sheet
#WhiteBlack
1e4e6
2d4d5
3Nd2c5
4exd5exd5

Lines filed under C08

Both share their first eight plies, the whole reference line.

NameAfter the shared startPlies
French Defense: Tarrasch Variation, Open System(the shared start itself)8
French Defense: Tarrasch Variation, Open System, Advance Line5.Ngf3 c410

French Defense: Tarrasch Variation, Open System, Advance Line

  1. 5.Ngf3 The knight leaves g1 for f3, opening a line for the rook on h1, guarding the pawn on d4.
  2. 5...c4 The c-pawn advances to c4, covering b3 and d3, opening a line for the bishop on f8.

The road to C08

  1. 1.e4 … 2...d5four earlier stops: B00, C00
  2. 3.Nd2C03 Tarrasch Variation
  3. 3...c5C07 Open System
  4. 4...exd5C08

The position after 4...exd5

White has brought out the knight on d2; Black has not yet moved a knight or bishop. White could capture with dxc5. The e-file is fully open. White is to move and has 32 legal moves.

WhiteBlackMaterial (pawn units)3838Minor pieces developed10Moves spent on pawns34Pawns on d4, e4, d5, e511Squares attacked in the other half57not castlednot castled

Codes that branch off from C08

The reference lines of one other code leave C08 from the position after 4...exd5, each with its own moves.

CodeMovesReference line
C095.Ngf3 Nc6French Defense: Tarrasch Variation, Open System, Main Line

Closest boards in other codes

CodeLineDiffers on
A43Benoni Defense: Old Benonisix squares: b1, d2, e2, d5, d7, e7
B13Caro-Kann Defense: Exchange Variationsix squares: b1, d2, c5, d5, c6, e7
B15Caro-Kann Defensesix squares: d2, c3, e4, c5, c6, e7
C01French Defense: Exchange Variationsix squares: b1, d2, c5, d5, e6, c7
C02French Defense: Advance Variationsix squares: b1, d2, c5, e5, e6, c7
C05French Defense: Tarrasch Variation, Closed Variationsix squares: e4, c5, e6, f6, c7, g8
C10French Defense: Paulsen Variationsix squares: d2, c3, e4, c5, e6, c7

Where lines continue from here

Two named lines filed under other codes pass through the position after 4...exd5. All of them belong to the codes listed above.

Volume C

  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
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  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
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  78. 77
  79. 78
  80. 79
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  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99

Open this line in the finderAll French Defense codes