B05 Alekhine Defense: Modern Variation, Main Line
B05 holds five named lines, all under the name Alekhine Defense. It leaves B04 (Alekhine Defense: Modern Variation) with 4...Bg4. None of its five lines contains a capture. That final move, by the bishop, opens a line for the queen on d8 and attacks the knight on f3.
| # | White | Black |
|---|---|---|
| 1 | e4 | Nf6 |
| 2 | e5 | Nd5 |
| 3 | d4 | d6 |
| 4 | Nf3 | Bg4 |
Lines filed under B05
All five share their first eight plies, the whole reference line and then split three ways at White’s move 5.
| Name | After the shared start | Plies |
|---|---|---|
| Alekhine Defense: Modern Variation, Main Line | (the shared start itself) | 8 |
| Alekhine Defense: Modern Variation, Alekhine Variation | 5.c4 | 9 |
| Alekhine Defense: Modern Variation, Panov Variation | 5.h3 | 9 |
| Alekhine Defense: Modern Variation, Flohr Variation | 5.Be2 c6 | 10 |
| Alekhine Defense: Modern Variation, Vitolins Attack | 5.c4 Nb6 6.d5 | 11 |
The road to B05
- 1.e4 … 3.d4four earlier stops: B00, B02, B03
- 3...d6B03 Alekhine Defense
- 4.Nf3B04 Modern Variation
- 4...Bg4B05
The position after 4...Bg4
White has brought out the knight on f3; Black the knight on d5 and bishop on g4. White could capture with exd6. White is to move and has 34 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A54 | Old Indian Defense: Tartakower-Indian | six squares: c2, e2, c4, d5, e5, f6 |
| B03 | Alekhine Defense | six squares: g1, f3, g4, d6, d7, c8 |
| D02 | Queen’s Pawn Game: Zukertort Variation | seven squares: e2, g4, d5, e5, d6, c8, g8 |
| D04 | Queen’s Pawn Game: Colle System | seven squares: e3, g4, d5, e5, d6, f6, c8 |
| A41 | Queen’s Pawn Game | eight squares: g1, e2, f3, g4, d5, e5, c8, g8 |
| A46 | Indian Defense: Knights Variation | eight squares: e2, g4, d5, e5, d6, f6, d7, c8 |
| A06 | Zukertort Opening | nine squares: d2, e2, d4, g4, d5, e5, d6, c8 … |