E52 Nimzo-Indian Defense: Normal Variation, Schlechter Defense
E52 holds two named lines, all under the name Nimzo-Indian Defense. It leaves E48 (Nimzo-Indian Defense: Normal Variation, Classical Defense) with 6.Nf3 b6. That final move, by the b-pawn, covers a5 and c5 and opens a line for the bishop on c8. Of all other reference positions, the board of E51 (Normal Variation, Ragozin Variation) comes closest, four squares apart.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | e6 |
| 3 | Nc3 | Bb4 |
| 4 | e3 | O-O |
| 5 | Bd3 | d5 |
| 6 | Nf3 | b6 |
Lines filed under E52
Both share the start 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 and then split two ways at Black’s move 4.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Nimzo-Indian Defense: Normal Variation, Schlechter Defense | 4...O-O 5.Bd3 d5 6.Nf3 b6 | 12 | Black castled |
| Nimzo-Indian Defense: Normal Variation, Schlechter Defense | 4...b6 5.Bd3 Bb7 6.Nf3 O-O 7.O-O d5 | 14 | both castled |
Nimzo-Indian Defense: Normal Variation, Schlechter Defense
- 4...b6 The b-pawn advances to b6, covering a5 and c5, opening a line for the bishop on c8.
- 5.Bd3 The bishop leaves f1 for d3.
- 5...Bb7 The bishop leaves c8 for b7, opening a line for the queen on d8, guarding the rook on a8.
- 6.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1.
- 6...O-O Black castles kingside, opening a line for the queen on d8, guarding the pawn on g7.
The road to E52
- 1.d4 … 4...O-Osix earlier stops: A40, A45, A50, E20, E40, E46
- 5.Bd3E47 Normal Variation
- 5...d5E48 Classical Defense
- 6...b6E52
The position after 6...b6
White has brought out the knight on c3, knight on f3 and bishop on d3; Black the knight on f6 and bishop on b4. White could capture with Bxh7+, cxd5. White is to move and has 36 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| E47 | Nimzo-Indian Defense: Normal Variation | six squares: g1, f3, d5, b6, b7, d7 |
| E50 | Nimzo-Indian Defense | six squares: f1, d3, d5, b6, b7, d7 |
| D55 | Queen’s Gambit Declined: Modern Variation, Normal Line | eight squares: c1, f1, d3, b4, g5, b6, b7, e7 |
| D58 | Queen’s Gambit Declined: Tartakower Defense | eight squares: c1, f1, d3, b4, h4, h6, e7, h7 |
| E46 | Nimzo-Indian Defense: Normal Variation | eight squares: f1, g1, d3, f3, d5, b6, b7, d7 |
| E49 | Nimzo-Indian Defense: Normal Variation, Botvinnik System | nine squares: g1, a2, b2, a3, c3, f3, b4, b6 … |
| D38 | Queen’s Gambit Declined: Ragozin Defense | ten squares: f1, e2, d3, e3, b6, b7, e8, f8 … |