E45 Nimzo-Indian Defense: St. Petersburg Variation, Fischer Variation
E45 holds a single named line. It leaves E44 (Nimzo-Indian Defense: St. Petersburg Variation) with 5...Ba6. White, to move in that position, has 24 legal moves, level for the fewest of the 40 Nimzo-Indian Defense codes. That final move, by the bishop, opens a line for the queen on d8.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | e6 |
| 3 | Nc3 | Bb4 |
| 4 | e3 | b6 |
| 5 | Ne2 | Ba6 |
The road to E45
- 1.d4 … 4.e3five earlier stops: A40, A45, A50, E20, E40
- 4...b6E43 St. Petersburg Variation
- 5.Ne2E44 St. Petersburg Variation
- 5...Ba6E45
The position after 5...Ba6
White has brought out the knight on c3 and knight on e2; Black the knight on f6, bishop on a6 and bishop on b4.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| E43 | Nimzo-Indian Defense: St. Petersburg Variation | four squares: g1, e2, a6, c8 |
| E40 | Nimzo-Indian Defense: Rubinstein System | six squares: g1, e2, a6, b6, b7, c8 |
| E42 | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | six squares: c5, a6, b6, b7, c7, c8 |
| E20 | Nimzo-Indian Defense | seven squares: g1, e2, e3, a6, b6, b7, c8 |
| E21 | Nimzo-Indian Defense: Three Knights Variation | seven squares: e2, e3, f3, a6, b6, b7, c8 |
| E14 | Queen’s Indian Defense: Spassky System | eight squares: b1, e2, c3, f3, b4, a6, c8, f8 |
| E41 | Nimzo-Indian Defense: Rubinstein System | eight squares: g1, e2, c5, a6, b6, b7, c7, c8 |