ecocodes
Volume E · Indian defenses‹ E21E23 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

E22 Nimzo-Indian Defense: Spielmann Variation

E22 holds a single named line. It leaves E20 (Nimzo-Indian Defense) with 4.Qb3. That final move, by the queen, guards the pawn on c4 and attacks the bishop on b4. Of all other reference positions, the board of E32 (Classical Variation) comes closest, two squares apart.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3Nc3Bb4
4Qb3

The road to E22

  1. 1.d4 … 1...Nf6two earlier stops: A40, A45
  2. 2.c4A50 Normal Variation
  3. 3...Bb4E20 Nimzo-Indian Defense
  4. 4.Qb3E22

The position after 4.Qb3

White has brought out the knight on c3; Black the knight on f6 and bishop on b4. Black could capture with Bxc3+. Black is to move and has 33 legal moves.

WhiteBlackMaterial (pawn units)3939Minor pieces developed12Moves spent on pawns21Pawns on d4, e4, d5, e510Squares attacked in the other half64not castlednot castled

Codes that branch off from E22

The reference lines of one other code leave E22 from the position after 4.Qb3, each with its own moves.

CodeMovesReference line
E234...c5 5.dxc5 Nc6Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit

Closest boards in other codes

CodeLineDiffers on
E21Nimzo-Indian Defense: Three Knights Variationfour squares: d1, g1, b3, f3
E24Nimzo-Indian Defense: Sämisch Variationfour squares: d1, a2, a3, b3
E30Nimzo-Indian Defense: Leningrad Variationfour squares: c1, d1, b3, g5
E33Nimzo-Indian Defense: Classical Variation, Zurich Variationfour squares: c2, b3, c6, b8
E34Nimzo-Indian Defense: Classical Variation, Noa Variationfour squares: c2, b3, d5, d7
E38Nimzo-Indian Defense: Classical Variation, Berlin Variationfour squares: c2, b3, c5, c7
E40Nimzo-Indian Defense: Rubinstein Systemfour squares: d1, e2, b3, e3

Where lines continue from here

Four named lines filed under other codes pass through the position after 4.Qb3. All of them belong to the codes listed above.

Volume E

  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
  18. 17
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  20. 19
  21. 20
  22. 21
  23. 22
  24. 23
  25. 24
  26. 25
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  29. 28
  30. 29
  31. 30
  32. 31
  33. 32
  34. 33
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  38. 37
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  40. 39
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  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99

Open this line in the finderAll Nimzo-Indian Defense codes