ecocodes
Volume C · Open games and the French Defense‹ C91C93 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

C92 Ruy Lopez: Closed

C92 holds six named lines, all under the name Ruy Lopez. It leaves C90, a position of the same name, with 9.h3. Both kings have castled by the end of the reference line, White on move 5 and Black on move 8. None of its six lines contains a capture.

Score sheet
#WhiteBlack
1e4e5
2Nf3Nc6
3Bb5a6
4Ba4Nf6
5O-OBe7
6Re1b5
7Bb3d6
8c3O-O
9h3

The move that completes C92

The reference line of C93 plays all of these moves and continues beyond them; C92 is the position reached at 9.h3.

  1. 9.h3 The h-pawn advances to h3, covering g4.

Lines filed under C92

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

NameAfter the shared startPliesAt the end
Ruy Lopez: Closed(the shared start itself)17both castled
Ruy Lopez: Closed, Flohr System9...Bb718both castled
Ruy Lopez: Closed, Karpov Variation9...Nd718both castled
Ruy Lopez: Closed, Kholmov Variation9...Be618both castled
Ruy Lopez: Closed, Zaitsev System9...Re818both castled
Ruy Lopez: Closed, Smyslov-Breyer-Zaitsev Hybrid9...Bb7 10.d4 Re8 11.Nbd2 Bf8 12.a3 h624both castled

The road to C92

  1. 1.e4 … 6...b5eight earlier stops: B00, C20, C40, C44, C60, C70, C78, C84
  2. 7.Bb3C88 Closed
  3. 8...O-OC90 Closed
  4. 9.h3C92

The position after 9.h3

White has brought out the knight on f3 and bishop on b3; Black the knight on c6, knight on f6 and bishop on e7. Black could capture with Bxh3, Nxe4. Black is to move and has 30 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed23Moves spent on pawns34Pawns on d4, e4, d5, e511Squares attacked in the other half68castled kingside, move 5castled kingside, move 8

Codes that branch off from C92

The reference lines of three other codes leave C92 from the position after 9.h3, each with its own moves.

CodeMovesReference line
C939...h6Ruy Lopez: Closed, Smyslov Defense
C949...Nb8Ruy Lopez: Closed, Breyer Defense
C979...Na5Ruy Lopez: Closed, Chigorin Defense

Closest boards in other codes

CodeLineDiffers on
C89Ruy Lopez: Marshall Attackfour squares: h2, h3, d5, d6
C91Ruy Lopez: Closed, Yates Variationfour squares: d2, h2, h3, d4
C95Ruy Lopez: Closed, Breyerfour squares: d2, d4, c6, b8
C96Ruy Lopez: Closed, Chigorin Defensefour squares: c2, b3, a5, c6
C98Ruy Lopez: Closed, Chigorin Defenseeight squares: b1, c2, d2, b3, d4, c5, c7, d8
C88Ruy Lopez: Closedten squares: c2, h2, c3, h3, d6, d7, e8, f8 …
C99Ruy Lopez: Closed, Chigorin Defense, Panov Systemten squares: b1, c2, d2, b3, c3, d4, a5, c6 …

Where lines continue from here

Nineteen named lines filed under other codes pass through the position after 9.h3. Besides the codes above, they belong to C95, C96, C98, C99.

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 Ruy Lopez codes