Caissa Codex

← All ECO codes

ECO B28: Sicilian Defense: O'Kelly Variation

ECO B28 is part of volume B, Semi-Open Games. The Lichess chess-openings dataset files 20 named lines under it. The shortest is Sicilian Defense: O'Kelly Variation: 1. e4 c5 2. Nf3 a6. All of them are lines of the Sicilian Defense: O'Kelly Variation.

That position has come up in 4,703,886 Lichess games between players rated 1600 to 2500: White won 46.9%, 4.9% were drawn and Black won 48.2%.

OpeningMovesGamesLength
Sicilian Defense: O'Kelly Variation 1. e4 c5 2. Nf3 a6 4.7M 2 moves
Sicilian Defense: O'Kelly Variation, Aronin System 1. e4 c5 2. Nf3 a6 3. Be2 70K 3 moves
Sicilian Defense: O'Kelly Variation, Kieseritzky System 1. e4 c5 2. Nf3 a6 3. b3 52K 3 moves
Sicilian Defense: O'Kelly Variation, Maróczy Bind 1. e4 c5 2. Nf3 a6 3. c4 264K 3 moves
Sicilian Defense: O'Kelly Variation, Normal System 1. e4 c5 2. Nf3 a6 3. d4 2.4M 3 moves
Sicilian Defense: O'Kelly Variation, Quiet System 1. e4 c5 2. Nf3 a6 3. d3 97K 3 moves
Sicilian Defense: O'Kelly Variation, Réti System 1. e4 c5 2. Nf3 a6 3. g3 90K 3 moves
Sicilian Defense: O'Kelly Variation, Venice System 1. e4 c5 2. Nf3 a6 3. c3 719K 3 moves
Sicilian Defense: O'Kelly Variation, Wing Gambit 1. e4 c5 2. Nf3 a6 3. b4 31K 3 moves
Sicilian Defense: O'Kelly Variation, Yerevan System 1. e4 c5 2. Nf3 a6 3. Nc3 659K 3 moves
Sicilian Defense: O'Kelly Variation, Maróczy Bind, Paulsen Line 1. e4 c5 2. Nf3 a6 3. c4 e6 289K 3 moves
Sicilian Defense: O'Kelly Variation, Maróczy Bind, Robatsch Line 1. e4 c5 2. Nf3 a6 3. c4 d6 57K 3 moves
Sicilian Defense: O'Kelly Variation, Venice System, Barcza Line 1. e4 c5 2. Nf3 a6 3. c3 Nf6 46K 3 moves
Sicilian Defense: O'Kelly Variation, Venice System, Ljubojevic Line 1. e4 c5 2. Nf3 a6 3. c3 b5 70K 3 moves
Sicilian Defense: O'Kelly Variation, Venice System, Steiner Line 1. e4 c5 2. Nf3 a6 3. c3 d6 267K 3 moves
Sicilian Defense: O'Kelly Variation, Normal System, Cortlever Gambit 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Bc4 35K 4 moves
Sicilian Defense: O'Kelly Variation, Normal System, Smith-Morra Line 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. c3 129K 4 moves
Sicilian Defense: O'Kelly Variation, Normal System, Zagorovsky Line 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Qxd4 92K 4 moves
Sicilian Defense: O'Kelly Variation, Normal System, Taimanov Line 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 e5 423K 4 moves
Sicilian Defense: O'Kelly Variation, Venice System, Gambit Line 1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Nf6 14K 4 moves

https://chesscodex.org/eco/B28