Tree path 5 levels King's Pawn Game › Alekhine Defense › Normal Variation › Alekhine Defense › O'Sullivan Gambit
- Chess Codex
- King's Pawn Game B00
- Alekhine Defense B02
- Normal Variation B02
- Alekhine Defense B03
- O'Sullivan Gambit B03 you are here
Alekhine Defense: O'Sullivan Gambit
Overview
Alekhine Defense: O'Sullivan Gambit belongs to the gambit family of chess openings (ECO B03, Semi-Open Games). It trades material for attacking chances — a classic trade-off that has fascinated players from the Romantic era to modern correspondence chess.
The Semi-Open Games group covers semi-open games — replies to 1.e4 where Black declines the symmetrical 1…e5 in favour of an asymmetric pawn structure.
The line arises from 6 plies — specifically the moves 1. e4 Nf6 2. e5 Nd5 3. d4 b5.
The line refines Alekhine Defense, which traces back to the root opening King's Pawn Game.
Explore the position on the interactive board, study its real-world results from Lichess, and challenge the engine when you are ready.
- ECO code
- B03
- Group
- Semi-Open Games (B)
- Plies
- 6
- Parent
- Alekhine Defense
This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.
Statistics from Lichess
158,253 games · White 43.7% / Draw 3.4% / Black 52.9%
| Moves | Games | W / D / B |
|---|---|---|
| Bxb5 | 90,893 | |
| Nf3 | 30,712 | |
| c4 | 13,829 | |
| f4 | 10,390 | |
| c3 | 4,119 | |
| Nc3 | 2,043 | |
| b3 | 1,332 | |
| Bd3 | 833 |
Source: Lichess Opening Explorer · cached 2026-09-26 01:19:24
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