ecocodes
Volume A · Flank openings‹ A83A85 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

A84 Dutch Defense

A84 holds seven named lines, all under the name Dutch Defense. It leaves A80, a position of the same name, with 2.c4. Black, to move in that position, has 20 legal moves, level for the fewest of the 20 Dutch Defense codes. Lines of 13 other codes continue from its position, the second-widest spread of the 20 Dutch Defense codes. With seven named lines it is the second-largest code of the 20 Dutch Defense codes.

Score sheet
#WhiteBlack
1d4f5
2c4

The move that completes A84

The reference line of A85 plays all of these moves and continues beyond them; A84 is the position reached at 2.c4.

  1. 2.c4 The c-pawn advances two squares to c4, covering b5 and d5, opening a line for the queen on d1.

Lines filed under A84

All seven share their first three plies, the whole reference line and then split three ways at Black’s move 2.

NameAfter the shared startPlies
Dutch Defense(the shared start itself)3
Dutch Defense: Classical Variation2...e64
Dutch Defense: Normal Variation2...Nf64
Dutch Defense: Bellon Gambit2...e6 3.e45
Dutch Defense: Rubinstein Variation2...e6 3.Nc35
Dutch Defense: Bladel Variation2...g6 3.Nc3 Nh66
Dutch Defense: Krause Variation2...Nf6 3.Nc3 d6 4.Nf3 Nc68

The road to A84

  1. 1.d4A40 Queen’s Pawn Game
  2. 1...f5A80 Dutch Defense
  3. 2.c4A84

The position after 2.c4

WhiteBlackMaterial (pawn units)3939Minor pieces developed00Moves spent on pawns21Pawns on d4, e4, d5, e510Squares attacked in the other half62not castlednot castled

Codes that branch off from A84

The reference lines of two other codes leave A84 from the position after 2...Nf6, each with its own moves.

CodeMovesReference line
A853.Nc3Dutch Defense: Queen’s Knight Variation
A863.g3Dutch Defense: Fianchetto Variation

Closest boards in other codes

CodeLineDiffers on
A10English Openingfour squares: d2, d4, f5, f7
A40Queen’s Pawn Gamefour squares: c2, c4, f5, f7
A50Indian Defense: Normal Variationfour squares: f5, f6, f7, g8
A81Dutch Defense: Fianchetto Attackfour squares: c2, g2, g3, c4
A82Dutch Defense: Staunton Gambitfour squares: c2, e2, c4, e4
D06Queen’s Gambitfour squares: d5, f5, d7, f7
D20Queen’s Gambit Acceptedfour squares: c4, f5, d7, f7

Where lines continue from here

Besides the codes above, they belong to A87, A90, A91, A92, A93, A94, A95, A96, A97, A98, A99.

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
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  17. 16
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  21. 20
  22. 21
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  32. 31
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  35. 34
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  44. 43
  45. 44
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  51. 50
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  54. 53
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  64. 63
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  66. 65
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  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 Dutch Defense codes