ecocodes
Volume B · Semi-open games‹ B11B13 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

B12 Caro-Kann Defense

B12 holds 24 named lines, all under the name Caro-Kann Defense. It leaves B10, a position of the same name, with 2.d4. Black, to move in that position, has 21 legal moves, the fewest of the 10 Caro-Kann Defense codes. Lines of seven other codes continue from its position, the second-widest spread of the 10 Caro-Kann Defense codes. With 24 named lines it is the second-largest code of the 10 Caro-Kann Defense codes.

Score sheet
#WhiteBlack
1e4c6
2d4

The move that completes B12

The reference line of B13 plays all of these moves and continues beyond them; B12 is the position reached at 2.d4.

  1. 2.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.

Lines filed under B12

All 24 share their first three plies, the whole reference line and then split four ways at Black’s move 2.

NameAfter the shared startPliesAt the end
Caro-Kann Defense(the shared start itself)3
Caro-Kann Defense2...d54
Caro-Kann Defense: De Bruycker Defense2...Na64
Caro-Kann Defense: Masi Variation2...Nf64
Caro-Kann Defense: Massachusetts Defense2...f54
Caro-Kann Defense: Advance Variation2...d5 3.e55
Caro-Kann Defense: Maróczy Variation2...d5 3.f35
Caro-Kann Defense: Mieses Gambit2...d5 3.Be35
Caro-Kann Defense: Modern Variation2...d5 3.Nd25
Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense2...d5 3.e5 c56
Caro-Kann Defense: De Bruycker Defense2...Na6 3.Nc3 Nc76
Caro-Kann Defense: Edinburgh Variation2...d5 3.Nd2 Qb66
Caro-Kann Defense: Advance Variation, Bayonet Attack2...d5 3.e5 Bf5 4.g47
Caro-Kann Defense: Advance Variation, Bronstein Variation2...d5 3.e5 Bf5 4.Ne27
Caro-Kann Defense: Advance Variation, Prins Attack2...d5 3.e5 Bf5 4.b47
Caro-Kann Defense: Advance Variation, Short Variation2...d5 3.e5 Bf5 4.Nf37
Caro-Kann Defense: Advance Variation, Tal Variation2...d5 3.e5 Bf5 4.h47
Caro-Kann Defense: Advance Variation, Van der Wiel Attack2...d5 3.e5 Bf5 4.Nc37
Caro-Kann Defense: Ulysses Gambit2...d5 3.Nf3 dxe4 4.Ng57Black +1
Caro-Kann Defense: Advance Variation, Van der Wiel Attack, Dreyev Defense2...d5 3.e5 Bf5 4.Nc3 Qb68
Caro-Kann Defense: Advance, Short Variation2...d5 3.e5 Bf5 4.c3 e6 5.Be29
Caro-Kann Defense: Mieses Attack, Landau Gambit2...d5 3.Bd3 Nf6 4.e5 Nfd7 5.e69
Caro-Kann Defense: Maróczy Variation, Maróczy Gambit2...d5 3.f3 dxe4 4.fxe4 e5 5.Nf3 exd4 6.Bc411Black +1
Caro-Kann Defense: Advance Variation, Van der Wiel Attack2...d5 3.e5 Bf5 4.Nc3 e6 5.g4 Bg6 6.Nge2 c5 7.h413

The road to B12

  1. 1.e4B00 King’s Pawn Game
  2. 1...c6B10 Caro-Kann Defense
  3. 2.d4B12

The position after 2.d4

WhiteBlackMaterial (pawn units)3939Minor pieces developed00Moves spent on pawns21Pawns on d4, e4, d5, e520Squares attacked in the other half90not castlednot castled

Codes that branch off from B12

The reference lines of two other codes leave B12 from the position after 2...d5, each with its own moves.

CodeMovesReference line
B133.exd5Caro-Kann Defense: Exchange Variation
B153.Nc3Caro-Kann Defense

Closest boards in other codes

CodeLineDiffers on
A40Queen’s Pawn Gamefour squares: e2, e4, c6, c7
A43Benoni Defense: Old Benonifour squares: e2, e4, c5, c6
A82Dutch Defense: Staunton Gambitfour squares: f5, c6, c7, f7
B00King’s Pawn Gamefour squares: d2, d4, c6, c7
B17Caro-Kann Defense: Karpov Variationfour squares: b1, e4, d7, b8
B20Sicilian Defensefour squares: d2, d4, c5, c6
C21Center Game Acceptedfour squares: d4, c6, c7, e7

Where lines continue from here

Besides the codes above, they belong to B14, B16, B17, B18, B19.

Volume B

  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 Caro-Kann Defense codes