Alekhine Defense: O'Sullivan Gambit B03
Family: Alekhine Defense · basic page
♞ View line on interactive board Explore Alekhine Defense tree (56 lines) 🎓 Train this family
1. e4 Nf6 2. e5 Nd5 3. d4 b5
- Position after 6 half-moves — White to move.
- Material is balanced.
- Family “Alekhine Defense” contains 56 recorded variation(s) here.
Variations of this family
| Name | ECO | Main line length |
|---|---|---|
| Alekhine Defense | B02 | 2 plies |
| Alekhine Defense: Brooklyn Variation | B02 | 4 plies |
| Alekhine Defense: Brooklyn Variation, Everglades Variation | B02 | 6 plies |
| Alekhine Defense: Buckley Attack | B02 | 5 plies |
| Alekhine Defense: Hunt Variation, Lasker Simul Gambit | B02 | 11 plies |
| Alekhine Defense: Hunt Variation, Matsukevich Gambit | B02 | 13 plies |
| Alekhine Defense: Hunt Variation, Mikenas Gambit | B02 | 15 plies |
| Alekhine Defense: Kmoch Variation | B02 | 9 plies |
| Alekhine Defense: Krejcik Variation | B02 | 3 plies |
| Alekhine Defense: Krejcik Variation, Krejcik Gambit | B02 | 5 plies |
| Alekhine Defense: Maróczy Variation | B02 | 3 plies |
| Alekhine Defense: Mokele Mbembe | B02 | 4 plies |
Related puzzles
Lichess tactics played in this opening — solve them right on the board: