ecocodes
Volume C · Open games and the French Defense‹ C81C83 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

C82 Ruy Lopez: Open

C82 holds seven named lines, all under the name Ruy Lopez. It leaves C80 (Ruy Lopez: Open, Main Line) with 9.c3. Black, to move in that position, has 48 legal moves, level for the most of the 40 Ruy Lopez codes. That final move, by the c-pawn, covers b4 and d4 and opens a line for the queen on d1 and the bishop on b3.

Score sheet
#WhiteBlack
1e4e5
2Nf3Nc6
3Bb5a6
4Ba4Nf6
5O-ONxe4
6d4b5
7Bb3d5
8dxe5Be6
9c3

Lines filed under C82

All seven share their first 17 plies, the whole reference line and then split two ways at Black’s move 9.

NameAfter the shared startPliesAt the end
Ruy Lopez: Open(the shared start itself)17White castled
Ruy Lopez: Open, Berlin Variation9...Nc518White castled
Ruy Lopez: Open, Italian Variation9...Bc518White castled
Ruy Lopez: Open, Motzko Attack9...Bc5 10.Qd319White castled
Ruy Lopez: Open, St. Petersburg Variation9...Bc5 10.Nbd219White castled
Ruy Lopez: Open, Motzko Attack, Nenarokov Variation9...Bc5 10.Qd3 Ne720White castled
Ruy Lopez: Open, Dilworth Variation9...Bc5 10.Nbd2 O-O 11.Bc2 Nxf222Black +1, both castled

The road to C82

  1. 1.e4 … 7...d5ten earlier stops: B00, C20, C40, C44, C60, C70, C78, C80
  2. 8.dxe5C80 Open
  3. 8...Be6C80 Main Line
  4. 9.c3C82

The position after 9.c3

White has brought out the knight on f3 and bishop on b3; Black the knight on c6, knight on e4 and bishop on e6. White has a half-open d-file; Black a half-open e-file. Black could capture with Nxc3, Nxe5, Nxf2.

WhiteBlackMaterial (pawn units)3838Minor pieces developed23Moves spent on pawns44Pawns on d4, e4, d5, e511Squares attacked in the other half613castled kingside, move 5not castled

Codes that branch off from C82

The reference lines of one other code leave C82 from the position after 9.c3, each with its own moves.

CodeMovesReference line
C839...Be7Ruy Lopez: Open, Classical Defense

Closest boards in other codes

CodeLineDiffers on
C81Ruy Lopez: Open, Howell Attackfour squares: d1, c2, e2, c3
C67Ruy Lopez: Berlin Defense, Rio Gambit Accepted13 squares: c2, d2, b3, c3, b5, d5, e5, a6 …
C69Ruy Lopez: Exchange Variation, Normal Variation13 squares: c2, d2, b3, c3, e4, b5, d5, e5 …
C89Ruy Lopez: Marshall Attack13 squares: e1, f1, d2, e4, e5, e6, f6, e7 …
C72Ruy Lopez: Morphy Defense, Modern Steinitz Defense14 squares: c2, d2, b3, c3, a4, e4, b5, d5 …
C78Ruy Lopez: Morphy Defense14 squares: c2, d2, b3, c3, a4, e4, b5, d5 …
C79Ruy Lopez: Morphy Defense, Steinitz Deferred14 squares: c2, d2, b3, c3, a4, e4, b5, d5 …

Where lines continue from here

Four named lines filed under other codes pass through the position after 9.c3. 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
  68. 67
  69. 68
  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
  75. 74
  76. 75
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  78. 77
  79. 78
  80. 79
  81. 80
  82. 81
  83. 82
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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 Ruy Lopez codes