Chessy
Sicilian Defense: O'Kelly Variation, Réti System as White
After 1.e4 c5 2.Nf3 a6 3.g3, you are heading for a position where Black has chosen an offbeat Sicilian setup and you answer with a flexible kingside fianchetto. The position is already playable for White, and the numbers show a small edge in your favour. That makes this a good drill for learning calm development, good piece placement, and how to meet Black’s most natural reactions without drifting into passivity.
Play the Sicilian Defense: O'Kelly Variation, Réti System against the engine
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Create a free account →What the opening is asking you to do
This line is less about memorising sharp theory and more about understanding a healthy setup. Your g-pawn move signals a kingside fianchetto, so you want smooth development, a safe king, and pieces that support the centre. Against a Sicilian with ...a6, it is often useful to stay flexible and let Black show their plan first. The key is to keep your position compact, avoid rushing, and make sure your pieces work together.
The move the engine prefers
Stockfish rates this +0.45, a small edge for White. That means you stand a little better here, but only if you keep playing accurately. The engine’s best move for Black is Nc6, continuing Nc6 Bg2 Nf6 e5. In the drill, pay attention to how your developing moves can meet that kind of pressure while preserving your initiative and king safety.
What the database says
Across 34,117 games at this exact position, White scores 50.9%, draws 4.0%, and Black wins 45.1%. That is a practical result for White and it matches the engine’s mild approval. The most common continuations are Nc6, e6, b5, d6, g6, and Nf6, so you should expect a range of normal Sicilian setups rather than a single forced line. This is a good opening to practise handling familiar developing moves from the other side.
How to meet Black’s main continuations
The most played reply is Nc6, with 12,993 games and White scoring 50.8%. After that, the same calm principles still matter: develop naturally, keep your king secure, and stay ready to claim space when the position allows it. The other common replies, e6, b5, d6, g6, and Nf6, all point to a position where piece coordination matters more than tactics at first. If you stay disciplined, you are usually the side with the more comfortable development.
Results across 34,117 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nc6 | 12,993 | 50.8% |
| e6 | 6,867 | 50.8% |
| b5 | 5,208 | 51.3% |
| d6 | 4,426 | 49.5% |
| g6 | 1,334 | 51.0% |
| Nf6 | 912 | 53.8% |
Frequently asked questions
Is the Sicilian Defense: O'Kelly Variation, Réti System good for White?
Yes, this page is built around the White side, and the position is slightly favourable for you. Stockfish gives +0.45, and the game results at this exact position are also pleasant for White.
What is the main idea after 1.e4 c5 2.Nf3 a6 3.g3?
You are choosing a flexible kingside fianchetto and aiming for smooth development. The position is about solid piece placement, king safety, and handling Black’s Sicilian setup without overreacting.
What is Black’s best move in this position?
The engine’s best move is Nc6. The listed continuation is Nc6 Bg2 Nf6 e5, so you should be ready for Black to develop naturally and challenge your setup.
Which replies are most common here?
The most played continuations are Nc6, e6, b5, d6, g6, and Nf6. Nc6 is the most common, with 12,993 games, so that is the first reply to be comfortable against.
How many games feature the Sicilian Defense: O'Kelly Variation, Réti System?
Over 34K Lichess games have reached the Sicilian Defense: O'Kelly Variation, Réti System position. White wins 50.9%, Black wins 45.1%, with 4.0% draws — based on real rated games.