ecocodes
Volume C · Open games and the French Defense‹ C29C31 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

C30 King’s Gambit

C30 holds 32 named lines, all under the name King’s Gambit. It leaves C20 (King’s Pawn Game) with 2.f4. Material is no longer level at the end of ten of its lines; the widest gap, one pawn in Black’s favour, comes in King’s Gambit Declined: Classical, Réti Variation. Lines of ten other codes continue from its position, the widest spread of the 10 King’s Gambit codes. At three plies, its reference line is the shortest of the 10 King’s Gambit codes.

Score sheet
#WhiteBlack
1e4e5
2f4

The move that completes C30

The reference line of C31 plays all of these moves and continues beyond them; C30 is the position reached at 2.f4.

  1. 2.f4 The f-pawn advances two squares to f4, covering e5 and g5.

Lines filed under C30

All 32 share the start 1.e4 and then split two ways at Black’s move 1.

NameAfter the shared startPliesAt the end
King’s Gambit1...e5 2.f43
King’s Gambit Declined: Classical Variation1...e5 2.f4 Bc54
King’s Gambit Declined: Keene’s Defense1...e5 2.f4 Qh4+4check
King’s Gambit Declined: Mafia Defense1...c5 2.f4 e54
King’s Gambit Declined: Norwalde Variation1...e5 2.f4 Qf64
King’s Gambit Declined: Panteldakis Countergambit1...e5 2.f4 f54
King’s Gambit Declined: Petrov’s Defense1...e5 2.f4 Nf64
King’s Gambit Declined: Queen’s Knight Defense1...e5 2.f4 Nc64
King’s Gambit Declined: Zilbermints Double Countergambit1...e5 2.f4 g54
King’s Gambit Declined: Classical Variation, Walthoffen Attack1...e5 2.f4 Bc5 3.Qh55
King’s Gambit Declined: Keene’s Defense1...e5 2.f4 Qh4+ 3.g35
King’s Gambit Declined: Keene Defense1...e5 2.f4 Qh4+ 3.g3 Qe76
King’s Gambit Declined: Miles Defense1...e5 2.f4 Nc6 3.Nf3 f56
King’s Gambit Declined: Panteldakis Countergambit, Greco Variation1...e5 2.f4 f5 3.exf5 Qh4+6White +1, check
King’s Gambit Declined: Panteldakis Countergambit, Schiller’s Defense1...e5 2.f4 f5 3.exf5 Bc56White +1
King’s Gambit Declined: Senechaud Countergambit1...e5 2.f4 Bc5 3.Nf3 g56
King’s Gambit Declined: Soller-Zilbermints Gambit1...e5 2.f4 f6 3.fxe5 Nc66White +1
King’s Gambit Declined: Zilbermints Double Gambit1...e5 2.f4 Nc6 3.Nf3 g56
King’s Gambit Declined: Classical Variation1...e5 2.f4 Bc5 3.Nf3 d6 4.c37
King’s Gambit Declined: Classical Variation, Rotlewi Countergambit1...e5 2.f4 Bc5 3.Nf3 d6 4.b47
King’s Gambit Declined: Classical, Soldatenkov Variation1...e5 2.f4 Bc5 3.Nf3 d6 4.fxe57White +1
King’s Gambit Declined: Norwalde Variation, Schubert Variation1...e5 2.f4 Qf6 3.Nc3 Qxf4 4.d47Black +1
King’s Gambit Declined: Classical Variation, Rubinstein Countergambit1...e5 2.f4 Bc5 3.Nf3 d6 4.c3 f58
King’s Gambit Declined: Classical, Hanham Variation1...e5 2.f4 Bc5 3.Nf3 d6 4.Nc3 Nd78
King’s Gambit Declined: Hobbs-Zilbermints Gambit1...e5 2.f4 Nc6 3.Nf3 g5 4.fxg5 h68White +1
King’s Gambit Declined: Panteldakis Countergambit, Shirazi Line1...e5 2.f4 f5 3.exf5 exf4 4.Qh5+ Ke78
King’s Gambit Declined: Norwalde Variation, Bücker Gambit1...e5 2.f4 Qf6 3.Nc3 Qxf4 4.Nf3 Bb4 5.Bc49Black +1
King’s Gambit Declined: Classical Variation, Euwe Attack1...e5 2.f4 Bc5 3.Nf3 d6 4.c3 Bg4 5.fxe5 dxe5 6.Qa4+11check
King’s Gambit Declined: Panteldakis Countergambit, Pawn Sacrifice Line1...e5 2.f4 f5 3.exf5 exf4 4.Qh5+ g6 5.fxg6 Qe7+ 6.Kd111White +1
King’s Gambit Declined: Panteldakis Countergambit, Symmetrical Variation1...e5 2.f4 f5 3.exf5 exf4 4.Nf3 d5 5.d4 Bd6 6.Bd311
King’s Gambit Declined: Classical, Réti Variation1...e5 2.f4 Bc5 3.Nf3 d6 4.c3 f5 5.fxe5 dxe5 6.d4 exd4 7.Bc413Black +1
King’s Gambit Declined: Classical, Svenonius Variation1...e5 2.Bc4 Nc6 3.Nc3 Nf6 4.d3 Bc5 5.f4 d6 6.Nf3 Bg4 7.h3 Bxf3 8.Qxf3 exf416Black +1

The road to C30

  1. 1.e4B00 King’s Pawn Game
  2. 1...e5C20 King’s Pawn Game
  3. 2.f4C30

The position after 2.f4

Black could capture with exf4. Undefended and attacked: the pawn on f4. Black is to move and has 30 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed00Moves spent on pawns21Pawns on d4, e4, d5, e511Squares attacked in the other half75not castlednot castled

Codes that branch off from C30

The reference lines of two other codes leave C30 from the position after 2.f4, each with its own moves.

CodeMovesReference line
C312...d5King’s Gambit Declined: Falkbeer Countergambit
C332...exf4King’s Gambit Accepted

Closest boards in other codes

CodeLineDiffers on
A02Bird Openingfour squares: e2, e4, e5, e7
B00King’s Pawn Gamefour squares: f2, f4, e5, e7
B21Sicilian Defense: McDonnell Attackfour squares: c5, e5, c7, e7
C00French Defensefour squares: f2, f4, e5, e6
C23Bishop’s Openingfour squares: f1, f2, c4, f4
C25Vienna Gamefour squares: b1, f2, c3, f4
C29Vienna Game: Vienna Gambitfour squares: b1, c3, f6, g8

Where lines continue from here

Besides the codes above, they belong to C25, C32, C34, C35, C36, C37, C38, C39.

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

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