ecocodes
Volume C · Open games and the French Defense‹ C30C32 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

C31 King’s Gambit Declined: Falkbeer Countergambit

Also filed here: Van Geet Opening.

C31 holds 15 named lines from two openings, most of them (14) under King’s Gambit. It leaves C30 (King’s Gambit) with 2...d5. Material is no longer level at the end of nine of its lines; the widest gap, two pawns in White’s favour, comes in King’s Gambit Declined: Falkbeer Countergambit, Pickler Gambit. Black’s pieces and pawns attack nine squares in White’s half, level for the most of the 10 King’s Gambit codes. White, to move in that position, has 31 legal moves, the third-highest count of the 10 King’s Gambit codes.

Score sheet
#WhiteBlack
1e4e5
2f4d5

The move that completes C31

The reference line of C32 plays all of these moves and continues beyond them; C31 is the position reached at 2...d5.

  1. 2...d5 The d-pawn advances two squares to d5, covering c4 and e4, opening a line for the bishop on c8 and the queen on d8.

Lines filed under C31

All 15 share the start 1.e4 e5 and then split two ways at White’s move 2.

NameAfter the shared startPliesAt the end
King’s Gambit Declined: Falkbeer Countergambit2.f4 d54
King’s Gambit Declined: Falkbeer Countergambit Accepted2.f4 d5 3.exd55White +1
King’s Gambit Declined: Falkbeer Countergambit, Blackburne Attack2.f4 d5 3.Nf35
King’s Gambit Declined: Falkbeer Countergambit, Hinrichsen Gambit2.f4 d5 3.d45
King’s Gambit Declined: Falkbeer Countergambit, Milner-Barry Variation2.f4 d5 3.Nc35
King’s Gambit Declined: Falkbeer Countergambit, Miles Gambit2.f4 d5 3.exd5 Bc56White +1
King’s Gambit Declined: Falkbeer Countergambit, Modern Transfer2.f4 d5 3.exd5 exf46
King’s Gambit Declined: Falkbeer Countergambit, Nimzowitsch-Marshall Countergambit2.f4 d5 3.exd5 c66White +1
King’s Gambit Declined: Falkbeer Countergambit, Staunton Line2.f4 d5 3.exd5 e46White +1
King’s Gambit Declined: Falkbeer Countergambit, Anderssen Attack2.f4 d5 3.exd5 e4 4.Bb5+7White +1, check
King’s Gambit Declined: Falkbeer Countergambit, Charousek Gambit2.f4 d5 3.exd5 e4 4.d37White +1
Van Geet Opening: Grünfeld Defense, Steiner Gambit2.f4 d5 3.Nc3 dxe4 4.Nxe47
King’s Gambit Declined: Falkbeer Countergambit, Pickler Gambit2.f4 d5 3.exd5 c6 4.dxc6 Bc58White +2
King’s Gambit Declined: Falkbeer Countergambit, Rubinstein Variation2.f4 d5 3.exd5 e4 4.Nc3 Nf6 5.Qe29White +1
King’s Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Morphy Defense2.Nc3 Nf6 3.f4 d5 4.exd5 e4 5.d3 Bb4 6.Bd2 e312White +1

The road to C31

  1. 1.e4one earlier stop: B00
  2. 1...e5C20 King’s Pawn Game
  3. 2.f4C30 King’s Gambit
  4. 2...d5C31

The position after 2...d5

White could capture with exd5, fxe5. Undefended and attacked: the pawn on e5.

WhiteBlackMaterial (pawn units)3939Minor pieces developed00Moves spent on pawns22Pawns on d4, e4, d5, e512Squares attacked in the other half79not castlednot castled

Codes that branch off from C31

The reference lines of one other code leave C31 from the position after 4.d3, each with its own moves.

CodeMovesReference line
C324...Nf6 5.dxe4King’s Gambit Declined: Falkbeer Countergambit, Charousek Gambit Accepted

Closest boards in other codes

CodeLineDiffers on
A03Bird Opening: Dutch Variationfour squares: e2, e4, e5, e7
B01Scandinavian Defensefour squares: f2, f4, e5, e7
C20King’s Pawn Gamefour squares: f2, f4, d5, d7
C33King’s Gambit Acceptedfour squares: f4, d5, e5, d7
C36King’s Gambit Accepted: Modern Defensefour squares: g1, f3, f4, e5
A02Bird Openingsix squares: e2, e4, d5, e5, d7, e7
B00King’s Pawn Gamesix squares: f2, f4, d5, e5, d7, e7

Where lines continue from here

Eight named lines filed under other codes pass through the position after 2...d5. 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
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  58. 57
  59. 58
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  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 King’s Gambit codes