ecocodes
Volume E · Indian defenses‹ E30E32 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

E31 Nimzo-Indian Defense: Leningrad Variation, Benoni Defense

E31 holds a single named line. It leaves E30 (Nimzo-Indian Defense: Leningrad Variation) with 4...h6 5.Bh4 c5 6.d5 d6. That final move, by the d-pawn, covers c5 and e5 and opens a line for the bishop on c8 and the queen on d8. Of all other reference positions, the board of A60 (Benoni Defense: Modern Variation) comes closest, ten squares apart.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3Nc3Bb4
4Bg5h6
5Bh4c5
6d5d6

Moves only E31 plays

Same as E30 up to 4.Bg5, then:

  1. 4...h6 The h-pawn advances to h6, covering g5, opening a line for the rook on h8, attacking the bishop on g5.
  2. 5.Bh4 The bishop goes from g5 to h4, attacking the knight on f6.
  3. 5...c5 The c-pawn advances two squares to c5, covering b4 and d4, opening a line for the queen on d8.
  4. 6.d5 The d-pawn advances to d5, covering c6 and e6, opening a line for the queen on d1.
  5. 6...d6 The d-pawn advances to d6, covering c5 and e5, opening a line for the bishop on c8 and the queen on d8.

The road to E31

  1. 1.d4 … 3.Nc3three earlier stops: A40, A45, A50
  2. 3...Bb4E20 Nimzo-Indian Defense
  3. 4.Bg5E30 Leningrad Variation
  4. 6...d6E31

The position after 6...d6

White has brought out the knight on c3 and bishop on h4; Black the knight on f6 and bishop on b4. White could capture with Bxf6, dxe6. White is to move and has 27 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed22Moves spent on pawns34Pawns on d4, e4, d5, e510Squares attacked in the other half66not castlednot castled

Closest boards in other codes

CodeLineDiffers on
A65Benoni Defense: King’s Pawn Lineten squares: c1, e2, b4, c4, e4, h4, e6, h6 …
E20Nimzo-Indian Defenseten squares: c1, d4, h4, c5, d5, d6, h6, c7 …
E38Nimzo-Indian Defense: Classical Variation, Berlin Variationten squares: c1, d1, c2, d4, h4, d5, d6, h6 …
E41Nimzo-Indian Defense: Rubinstein Systemten squares: c1, e2, e3, d4, h4, d5, d6, h6 …
B14Caro-Kann Defense: Panov Attack11 squares: c1, e2, b4, d4, h4, c5, d5, d6 …
D32Tarrasch Defense11 squares: c1, b4, d4, h4, d5, d6, f6, h6 …
D35Queen’s Gambit Declined: Normal Defense11 squares: c1, b4, d4, h4, c5, d5, d6, h6 …

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