ecocodes
a1b2c3d4e5f6g7h8
After 1...c5 · White to move

Benoni Defense

The list files 66 lines under the name Benoni Defense, spread over 24 codes (A40, A43–A44, A56, A60–A79). A43 alone holds 18 of them. From the starting position of Benoni Defense: Old Benoni, the most-travelled continuation is 2.d5, with 11 lines. The deepest, Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line, runs to 11...Re8. At the end of six lines one side is ahead on material; seven names contain the word Gambit.

Score sheet
#WhiteBlack
1d4c5

Where the lines split

Seventeen of the 66 lines continue from 1...c5; the bars show how many take each next move, and the indented rows the most common reply. The other 48 reach the opening by a different move order.

  1. 2.d511
    1. 2...Nf63
    2. 2...f52
    3. 2...d62
    4. 2...e52
  2. 2.dxc53
    1. 2...Na61
    2. 2...b61
  3. 2.Nf32
    1. 2...cxd42
  4. 2.b41

Codes holding Benoni Defense lines

Volume A

  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
CodeReference lineLinesLongest line (plies)
A40Queen’s Pawn Game1Benoni Defense: Franco-Sicilian Hybrid (14)
A43Benoni Defense: Old Benoni18Benoni Defense: Hawk Variation (6)
A44Benoni Defense: Old Benoni2Benoni Defense: Semi-Benoni (6)
A56Benoni Defense5Benoni Defense: King’s Indian System (10)
A60Benoni Defense: Modern Variation2Benoni Defense: Modern Variation, Snake Variation (10)
A61Benoni Defense4Benoni Defense: Fianchetto Variation (13)
A62Benoni Defense: Fianchetto Variation1Benoni Defense: Fianchetto Variation (16)
A63Benoni Defense: Fianchetto Variation, Hastings Defense1Benoni Defense: Fianchetto Variation, Hastings Defense (18)
A64Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line1Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line (22)
A65Benoni Defense: King’s Pawn Line9Benoni Defense: King’s Pawn Line (17)
A66Benoni Defense: Pawn Storm Variation2Benoni Defense: Mikenas Variation (15)
A67Benoni Defense: Taimanov Variation1Benoni Defense: Taimanov Variation (15)
A68Benoni Defense: Four Pawns Attack2Benoni Defense: Four Pawns Attack (17)
A69Benoni Defense: Four Pawns Attack, Main Line4Benoni Defense: Four Pawns Attack, Main Line (21)
A70Benoni Defense: Classical Variation3Benoni Defense: Classical Variation, New York Variation (15)
A71Benoni Defense: Classical Variation, Averbakh-Grivas Attack1Benoni Defense: Classical Variation, Averbakh-Grivas Attack (15)
A72Benoni Defense: Classical Variation1Benoni Defense: Classical Variation (16)
A73Benoni Defense: Classical Variation, Main Line1Benoni Defense: Classical Variation, Main Line (17)
A74Benoni Defense: Classical Variation, Full Line1Benoni Defense: Classical Variation, Full Line (19)
A75Benoni Defense: Classical Variation, Argentine Counterattack1Benoni Defense: Classical Variation, Argentine Counterattack (20)
A76Benoni Defense: Classical Variation, Czerniak Defense1Benoni Defense: Classical Variation, Czerniak Defense (18)
A77Benoni Defense: Classical Variation, Czerniak Defense, Tal Line2Benoni Defense: Classical Variation, Czerniak Defense, Tal Line (20)
A78Benoni Defense: Classical Variation, Czerniak Defense1Benoni Defense: Classical Variation, Czerniak Defense (20)
A79Benoni Defense: Classical Variation, Czerniak Defense1Benoni Defense: Classical Variation, Czerniak Defense (21)

Longest Benoni Defense lines

  1. Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line 22
  2. Benoni Defense: Four Pawns Attack, Main Line 21
  3. Benoni Defense: Four Pawns Attack, Main Line 21
  4. Benoni Defense: Classical Variation, Czerniak Defense 21
  5. Benoni Defense: Four Pawns Attack, Main Line 20
  6. Benoni Defense: Classical Variation, Argentine Counterattack 20
  7. Benoni Defense: Classical Variation, Czerniak Defense, Tal Line 20
  8. Benoni Defense: Classical Variation, Czerniak Defense 20