B02 Alekhine Defense
B02 holds 27 named lines, all under the name Alekhine Defense. It leaves B00 (King’s Pawn Game) with 1...Nf6. Material is no longer level at the end of three of its lines; the widest gap, one pawn in White’s favour, comes in Alekhine Defense: Hunt Variation, Mikenas Gambit. That final move, by the knight, opens a line for the rook on h8.
| # | White | Black |
|---|---|---|
| 1 | e4 | Nf6 |
Lines filed under B02
All 27 share their first two plies, the whole reference line and then split four ways at White’s move 2.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Alekhine Defense | (the shared start itself) | 2 | |
| Alekhine Defense: Krejcik Variation | 2.Bc4 | 3 | |
| Alekhine Defense: Maróczy Variation | 2.d3 | 3 | |
| Alekhine Defense: Brooklyn Variation | 2.e5 Ng8 | 4 | |
| Alekhine Defense: Mokele Mbembe | 2.e5 Ne4 | 4 | |
| Alekhine Defense: Normal Variation | 2.e5 Nd5 | 4 | |
| Alekhine Defense: Scandinavian Variation | 2.Nc3 d5 | 4 | |
| Alekhine Defense: Buckley Attack | 2.e5 Nd5 3.Na3 | 5 | |
| Alekhine Defense: Krejcik Variation, Krejcik Gambit | 2.Bc4 Nxe4 3.Bxf7+ | 5 | check |
| Alekhine Defense: Sämisch Attack | 2.e5 Nd5 3.Nc3 | 5 | |
| Alekhine Defense: Two Pawns Attack | 2.e5 Nd5 3.c4 | 5 | |
| Alekhine Defense: Welling Variation | 2.e5 Nd5 3.b3 | 5 | |
| Alekhine Defense: Brooklyn Variation, Everglades Variation | 2.e5 Ng8 3.d4 f5 | 6 | |
| Alekhine Defense: Mokele Mbembe, Modern Line | 2.e5 Ne4 3.d4 f6 | 6 | |
| Alekhine Defense: Mokele Mbembe, Vavra Defense | 2.e5 Ne4 3.d4 e6 | 6 | |
| Alekhine Defense: Scandinavian Variation, Geschev Gambit | 2.Nc3 d5 3.exd5 c6 | 6 | White +1 |
| Alekhine Defense: The Squirrel | 2.e5 Nd5 3.c4 Nf4 | 6 | |
| Alekhine Defense: Scandinavian Variation, Myers Gambit | 2.Nc3 d5 3.d3 dxe4 4.Bg5 | 7 | Black +1 |
| Alekhine Defense: Spielmann Gambit | 2.Nc3 d5 3.e5 Nfd7 4.e6 | 7 | |
| Alekhine Defense: Steiner Variation | 2.e5 Nd5 3.c4 Nb6 4.b3 | 7 | |
| Alekhine Defense: Two Pawns Attack, Lasker Variation | 2.e5 Nd5 3.c4 Nb6 4.c5 | 7 | |
| Alekhine Defense: Two Pawns Attack, Tate Variation | 2.e5 Nd5 3.c4 Nb6 4.a4 | 7 | |
| Alekhine Defense: Kmoch Variation | 2.e5 Nd5 3.Bc4 Nb6 4.Bb3 c5 5.d3 | 9 | |
| Alekhine Defense: Hunt Variation, Lasker Simul Gambit | 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Bc4 e6 6.Nc3 | 11 | |
| Alekhine Defense: Two Pawns Attack, Mikenas Variation | 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Bc4 e6 6.Nc3 d6 | 12 | |
| Alekhine Defense: Hunt Variation, Matsukevich Gambit | 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Nc3 Nxc3 6.dxc3 d6 7.Bg5 | 13 | |
| Alekhine Defense: Hunt Variation, Mikenas Gambit | 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Bc4 e6 6.Nc3 d6 7.Nxd5 exd5 8.Bxd5 | 15 | White +1 |
The road to B02
- 1.e4B00 King’s Pawn Game
- 1...Nf6B02
The position after 1...Nf6
Black has brought out the knight on f6; White has not yet moved a knight or bishop. White is to move and has 30 legal moves.
Codes that branch off from B02
The reference lines of one other code leave B02 from the position after 2...Nd5, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| B03 | 3.d4 | Alekhine Defense |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A05 | Zukertort Opening | four squares: g1, e2, f3, e4 |
| A15 | English Opening: Anglo-Indian Defense | four squares: c2, e2, c4, e4 |
| A45 | Indian Defense | four squares: d2, e2, d4, e4 |
| B01 | Scandinavian Defense | four squares: d5, f6, d7, g8 |
| B06 | Modern Defense | four squares: f6, g6, g7, g8 |
| B10 | Caro-Kann Defense | four squares: c6, f6, c7, g8 |
| B20 | Sicilian Defense | four squares: c5, f6, c7, g8 |
Where lines continue from here
Twenty-nine named lines filed under other codes pass through the position after 1...Nf6. Besides the codes above, they belong to B04, B05.