ecocodes
Volume C · Open games and the French Defense‹ C15C17 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

C16 French Defense: Winawer Variation, Advance Variation

C16 holds two named lines, all under the name French Defense. It leaves C15 (French Defense: Winawer Variation) with 4.e5. White’s pieces and pawns attack ten squares in Black’s half, the second-highest count of the 19 French Defense codes. Black, to move in that position, has 35 legal moves, the fourth-highest count of the 19 French Defense codes.

Score sheet
#WhiteBlack
1e4e6
2d4d5
3Nc3Bb4
4e5

The move that completes C16

The reference line of C17 plays all of these moves and continues beyond them; C16 is the position reached at 4.e5.

  1. 4.e5 The e-pawn advances to e5, covering d6 and f6.

Lines filed under C16

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

NameAfter the shared startPlies
French Defense: Winawer Variation, Advance Variation(the shared start itself)7
French Defense: Winawer Variation, Petrosian Variation4...Qd78

French Defense: Winawer Variation, Petrosian Variation

  1. 4...Qd7 The queen goes from d8 to d7.

The road to C16

  1. 1.e4 … 2...d5four earlier stops: B00, C00
  2. 3.Nc3C10 Paulsen Variation
  3. 3...Bb4C15 Winawer Variation
  4. 4.e5C16

The position after 4.e5

White has brought out the knight on c3; Black the bishop on b4. Black could capture with Bxc3+.

WhiteBlackMaterial (pawn units)3939Minor pieces developed11Moves spent on pawns32Pawns on d4, e4, d5, e521Squares attacked in the other half105not castlednot castled

Codes that branch off from C16

The reference lines of one other code leave C16 from the position after 4.e5, each with its own moves.

CodeMovesReference line
C174...c5French Defense: Winawer Variation, Advance Variation

Closest boards in other codes

CodeLineDiffers on
C02French Defense: Advance Variationfour squares: b1, c3, b4, f8
C10French Defense: Paulsen Variationfour squares: b4, e4, e5, f8
C01French Defense: Exchange Variationsix squares: b1, c3, b4, d5, e5, f8
C03French Defense: Tarrasch Variationsix squares: d2, c3, b4, e4, e5, f8
C11French Defense: Classical Variationsix squares: b4, e4, e5, f6, f8, g8
D31Queen’s Gambit Declined: Queen’s Knight Variationsix squares: c2, e2, b4, c4, e5, f8
C18French Defense: Winawer Variation, Advance Variationseven squares: a2, b2, a3, c3, b4, c5, c7

Where lines continue from here

Thirty-nine named lines filed under other codes pass through the position after 4.e5. Besides the codes above, they belong to C18, C19.

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
  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

Open this line in the finderAll French Defense codes