ecocodes
Volume D · Closed and semi-closed games‹ D32D34 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

D33 Tarrasch Defense: Rubinstein System

D33 holds six named lines, all under the name Tarrasch Defense. It leaves D32 (Tarrasch Defense: Two Knights Variation) with 5...Nc6 6.g3. Lines filed under D34 reach one of its named positions by a different move order. That final move, by the g-pawn, covers f4 and h4 and opens a line for the bishop on f1.

Score sheet
#WhiteBlack
1d4d5
2c4e6
3Nc3c5
4cxd5exd5
5Nf3Nc6
6g3

Lines filed under D33

All six share their first 11 plies, the whole reference line and then split two ways at Black’s move 6.

NameAfter the shared startPlies
Tarrasch Defense: Rubinstein System(the shared start itself)11
Tarrasch Defense: Prague Variation6...Nf612
Tarrasch Defense: Swedish Variation6...c412
Tarrasch Defense: Swedish Variation, Central Break6...c4 7.e413
Tarrasch Defense: Wagner Variation6...Nf6 7.Bg2 Bg414
Tarrasch Defense: Dubov Tarrasch6...Nf6 7.Bg2 cxd4 8.Nxd4 Bc516

The road to D33

  1. 1.d4 … 4.cxd5six earlier stops: A40, D00, D06, D30, D31, D32
  2. 4...exd5D32 Tarrasch Defense
  3. 5.Nf3D32 Two Knights Variation
  4. 6.g3D33

The position after 6.g3

White has brought out the knight on c3 and knight on f3; Black the knight on c6. White has a half-open c-file; Black a half-open e-file. Black could capture with Nxd4, cxd4. Black is to move and has 40 legal moves.

WhiteBlackMaterial (pawn units)3838Minor pieces developed21Moves spent on pawns44Pawns on d4, e4, d5, e511Squares attacked in the other half67not castlednot castled

Codes that branch off from D33

The reference lines of one other code leave D33 from the position after 6...Nf6, each with its own moves.

CodeMovesReference line
D347.Bg2 Be7Tarrasch Defense: Prague Variation, Main Line

Closest boards in other codes

CodeLineDiffers on
C09French Defense: Tarrasch Variation, Open System, Main Linesix squares: c2, d2, e2, g2, c3, g3
A36English Opening: Symmetrical Variation, Two Knights, Fianchetto Variationeight squares: g1, d2, f3, c4, d4, d5, d7, e7
D09Queen’s Gambit Declined: Albin Countergambit, Fianchetto Variationeight squares: b1, c3, c4, d4, c5, d5, e5, c7
D40Queen’s Gambit Declined: Semi-Tarrasch Defenseeight squares: g2, g3, c4, c6, e6, f6, b8, g8
D41Queen’s Gambit Declined: Semi-Tarrasch Defenseeight squares: g2, g3, d5, c6, e6, f6, b8, g8
D11Slav Defense: Modern Linenine squares: b1, g2, c3, g3, c4, c5, c6, e7 …
D15Slav Defense: Three Knights Variationnine squares: g2, g3, c4, c5, c6, f6, e7, b8 …

Where lines continue from here

Eleven named lines filed under other codes pass through the position after 6.g3. All of them belong to the codes listed above.

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

Other move orders

  • Tarrasch Defense: Prague Variation is also reached inside D34 Tarrasch Defense: Classical Variation, Bogoljubow Variation, whose order is 1.d4 Nf6 2.c4 e6 3.Nc3 c5 4.Nf3 d5 5.cxd5 exd5 6.g3 Nc6.

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