E32 Nimzo-Indian Defense: Classical Variation
E32 holds three named lines, all under the name Nimzo-Indian Defense. It leaves E20 (Nimzo-Indian Defense) with 4.Qc2. Of all other reference positions, the board of E22 (Spielmann Variation) comes closest, two squares apart. When it ends, White has one minor piece out and Black two, and neither king has castled.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | e6 |
| 3 | Nc3 | Bb4 |
| 4 | Qc2 |
The move that completes E32
The reference line of E33 plays all of these moves and continues beyond them; E32 is the position reached at 4.Qc2.
- 4.Qc2 The queen goes from d1 to c2.
Lines filed under E32
All three share their first seven plies, the whole reference line.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Nimzo-Indian Defense: Classical Variation | (the shared start itself) | 7 | |
| Nimzo-Indian Defense: Classical Variation, Keres Defense | 4...O-O 5.a3 Bxc3+ 6.Qxc3 b6 | 12 | Black castled |
| Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit | 4...O-O 5.a3 Bxc3+ 6.Qxc3 b5 | 12 | Black castled |
Nimzo-Indian Defense: Classical Variation, Keres Defense
- 4...O-O Black castles kingside, opening a line for the queen on d8, guarding the pawn on g7.
- 5.a3 The a-pawn advances to a3, covering b4, opening a line for the rook on a1, attacking the bishop on b4.
- 5...Bxc3+ The bishop on b4 takes the knight on c3, giving check.
- 6.Qxc3 The queen on c2 takes the bishop on c3, guarding the pawn on c4 and the pawn on d4.
- 6...b6 The b-pawn advances to b6, covering a5 and c5, opening a line for the bishop on c8.
Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit
- 4...O-O Black castles kingside, opening a line for the queen on d8, guarding the pawn on g7.
- 5.a3 The a-pawn advances to a3, covering b4, opening a line for the rook on a1, attacking the bishop on b4.
- 5...Bxc3+ The bishop on b4 takes the knight on c3, giving check.
- 6.Qxc3 The queen on c2 takes the bishop on c3, guarding the pawn on c4 and the pawn on d4.
- 6...b5 The b-pawn advances two squares to b5, covering a4 and c4, opening a line for the bishop on c8.
The road to E32
- 1.d4 … 1...Nf6two earlier stops: A40, A45
- 2.c4A50 Normal Variation
- 3...Bb4E20 Nimzo-Indian Defense
- 4.Qc2E32
The position after 4.Qc2
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.
Codes that branch off from E32
The reference lines of three other codes leave E32 from the position after 4.Qc2, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| E33 | 4...Nc6 | Nimzo-Indian Defense: Classical Variation, Zurich Variation |
| E34 | 4...d5 | Nimzo-Indian Defense: Classical Variation, Noa Variation |
| E38 | 4...c5 | Nimzo-Indian Defense: Classical Variation, Berlin Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| E21 | Nimzo-Indian Defense: Three Knights Variation | four squares: d1, g1, c2, f3 |
| E24 | Nimzo-Indian Defense: Sämisch Variation | four squares: d1, a2, c2, a3 |
| E30 | Nimzo-Indian Defense: Leningrad Variation | four squares: c1, d1, c2, g5 |
| E35 | Nimzo-Indian Defense: Classical Variation, Noa Variation | four squares: c4, d5, e6, d7 |
| E36 | Nimzo-Indian Defense: Classical Variation, Noa Variation | four squares: a2, a3, d5, d7 |
| E40 | Nimzo-Indian Defense: Rubinstein System | four squares: d1, c2, e2, e3 |
| A17 | English Opening: Anglo-Indian Defense, Hedgehog System | six squares: d1, c2, d2, b4, d4, f8 |
Where lines continue from here
Twenty named lines filed under other codes pass through the position after 4.Qc2. Besides the codes above, they belong to E35, E36, E37, E39.