ecocodes
Volume C · Open games and the French Defense‹ C93C95 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

C94 Ruy Lopez: Closed, Breyer Defense

C94 holds two named lines, all under the name Ruy Lopez. It leaves C92 (Ruy Lopez: Closed) with 9...Nb8. Both kings have castled by the end of the reference line, White on move 5 and Black on move 8. Of all other reference positions, the board of C95 (Closed, Breyer) comes closest, two squares apart.

Score sheet
#WhiteBlack
1e4e5
2Nf3Nc6
3Bb5a6
4Ba4Nf6
5O-OBe7
6Re1b5
7Bb3d6
8c3O-O
9h3Nb8

The move that completes C94

The reference line of C95 plays all of these moves and continues beyond them; C94 is the position reached at 9...Nb8.

  1. 9...Nb8 The knight goes from c6 to b8.

Lines filed under C94

Both share their first 18 plies, the whole reference line.

NameAfter the shared startPliesAt the end
Ruy Lopez: Closed, Breyer Defense(the shared start itself)18both castled
Ruy Lopez: Closed, Breyer Defense, Quiet Variation10.d319both castled

Ruy Lopez: Closed, Breyer Defense, Quiet Variation

  1. 10.d3 The d-pawn advances to d3, covering c4 and e4, opening a line for the bishop on c1 and the queen on d1.

The road to C94

  1. 1.e4 … 8.c3nine earlier stops: B00, C20, C40, C44, C60, C70, C78, C84, C88
  2. 8...O-OC90 Closed
  3. 9.h3C92 Closed
  4. 9...Nb8C94

The position after 9...Nb8

White has brought out the knight on f3 and bishop on b3; Black the knight on f6 and bishop on e7. White could capture with Bxf7+, Nxe5. White is to move and has 28 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed22Moves spent on pawns34Pawns on d4, e4, d5, e511Squares attacked in the other half67castled kingside, move 5castled kingside, move 8

Codes that branch off from C94

The reference lines of one other code leave C94 from the position after 9...Nb8, each with its own moves.

CodeMovesReference line
C9510.d4Ruy Lopez: Closed, Breyer

Closest boards in other codes

CodeLineDiffers on
C97Ruy Lopez: Closed, Chigorin Defensetwo squares: a5, b8
C90Ruy Lopez: Closedfour squares: h2, h3, c6, b8
C93Ruy Lopez: Closed, Smyslov Defensefour squares: c6, h6, h7, b8
C96Ruy Lopez: Closed, Chigorin Defensefour squares: c2, b3, a5, b8
C89Ruy Lopez: Marshall Attacksix squares: h2, h3, d5, c6, d6, b8
C91Ruy Lopez: Closed, Yates Variationsix squares: d2, h2, h3, d4, c6, b8
C98Ruy Lopez: Closed, Chigorin Defenseten squares: b1, c2, d2, b3, d4, c5, c6, c7 …

Where lines continue from here

Four named lines filed under other codes pass through the position after 9...Nb8. 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
  77. 76
  78. 77
  79. 78
  80. 79
  81. 80
  82. 81
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  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 Ruy Lopez codes