ecocodes
a1b2c3d4e5f6g7h8
After 1...g6 · White to move

Modern Defense

The list files 39 lines under the name Modern Defense, spread over seven codes (A04, A40–A42, B06–B07, B27). B06 alone holds 26 of them. From the starting position of Modern Defense, the most-travelled continuation is 2.d4, with 25 lines. The deepest, Modern Defense: Two Knights Variation, Suttles Variation, Tal Gambit, runs to 6...Qxb2. At the end of five lines one side is ahead on material; nine names contain the word Gambit.

Score sheet
#WhiteBlack
1e4g6

Where the lines split

Twenty-six of the 39 lines continue from 1...g6; the bars show how many take each next move, and the indented rows the most common reply. The other 12 reach the opening by a different move order.

  1. 2.d425
    1. 2...Bg721
    2. 2...Nf62
    3. 2...f51
    4. 2...Nh61
  2. 2.Bc41
    1. 2...Bg71

Codes holding Modern 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

Volume B

  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)
A04Zukertort Opening3Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Accepted (10)
A40Queen’s Pawn Game2Modern Defense: Beefeater Variation (10)
A41Queen’s Pawn Game2Modern Defense (6)
A42Modern Defense: Averbakh System4Modern Defense: Averbakh Variation, Pseudo-Sämisch (9)
B06Modern Defense26Modern Defense: Two Knights Variation, Suttles Variation, Tal Gambit (12)
B07King’s Pawn Game: Maróczy Defense1Modern Defense: Geller’s System (7)
B27Sicilian Defense1Modern Defense: Pterodactyl Variation (8)

Longest Modern Defense lines

  1. Modern Defense: Two Knights Variation, Suttles Variation, Tal Gambit 12
  2. Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Accepted 10
  3. Modern Defense: Beefeater Variation 10
  4. Modern Defense: Dunworthy Variation 10
  5. Modern Defense: Gurgenidze Defense 10
  6. Modern Defense: Masur Gambit 10
  7. Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Declined 10
  8. Modern Defense: Averbakh Variation, Pseudo-Sämisch 9