Chessy
Sicilian Defense: O'Kelly Variation, Aronin System — Playing as White
When Black plays 2…a6 in the Sicilian, they're asking you a question: are you ready to push d4? In the O'Kelly Variation, Aronin System, you answer with a calm 3.Be2 — developing, keeping the centre flexible, and saying no to immediate confrontation. This quiet move is surprisingly effective. Across over 54,000 games, White scores a solid 49.8% from here, and Stockfish gives +0.27, a small plus in your favour. That means you are slightly better right out of the opening. The drill below will test how you handle Black's most common replies and whether you can turn that edge into a full point.
Play the Sicilian Defense: O'Kelly Variation, Aronin System against the engine
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Create a free account →What You're Fighting For
By playing 3.Be2, you keep every option open. Black's early …a6 doesn't help their development, so you can aim to build a classical centre with d4 and castling. The engine's top choice for Black is 3…d6, planning …Nf6 and …e5 to challenge you in the centre. Your job is to complete development (O-O, maybe c3 or d4 when it's safe) and make sure Black feels the tempo they spent on a6. You're not trying to crush them instantly — this is a patient, positional edge that grows if they misstep.
The Engine's Blueprint
Stockfish says the best way for Black to respond is 3…d6, followed by O-O Nf6 e5. Let's walk through that: after 3.Be2 d6, you castle (4.O-O), Black develops the knight (4…Nf6), and you push 5.e5, immediately asking the knight what it's doing. This central push gains space and forces Black to decide: retreat, trade, or find a square. The engine sees this as the cleanest path to keeping your +0.27 edge — White has more room and Black's king is still stuck in the centre.
What the Statistics Reveal
The database of 54,014 games gives a clear picture of Black's preferences and your chances against each one. Here is how White scores against the most-played replies to 3.Be2: - 3…Nc6 (20,693 games): White wins 49.8% — the most popular reply, but no better for Black than average. - 3…e6 (11,992 games): White scores 49.0% — very even, play continues in a French-like structure. - 3…b5 (7,780 games): White wins 50.4% — Black's queenside expansion is a slight overreach. - 3…d6 (7,131 games): White scores 48.9% — the engine's top choice, but your winning chances are still healthy. - 3…g6 (1,817 games): White scores 50.1% — a kingside fianchetto that you can meet with d4 and play. - 3…Nf6 (1,343 games): White scores 53.2% — and as the FACTS note, this move is actually an inaccuracy! More on that below.
The One Mistake Worth Punishing
Black's 3…Nf6 is listed as a known mistake in this position — an inaccuracy that loses about 0.7 pawns compared to the correct 3…d6. Even so, it's been played over 1,300 times, and White scores a very respectable 53.2% against it. Why is it bad? Black develops the knight before you've committed your own pawns, and you can immediately gain time with 4.e5, chasing the knight away. From there, White gets a space advantage and easy development. If you face 3…Nf6 in the drill, remember: push e5, don't let Black off the hook.
Results across 54,014 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nc6 | 20,693 | 49.8% |
| e6 | 11,992 | 49.0% |
| b5 | 7,780 | 50.4% |
| d6 | 7,131 | 48.9% |
| g6 | 1,817 | 50.1% |
| Nf6 | 1,343 | 53.2% |
Frequently asked questions
Is 3.Be2 a passive move in the Sicilian?
Not at all. While it looks quiet, 3.Be2 is a flexible developing move that keeps all of White's central options open. You can follow up with O-O, c3, or d4 depending on what Black plays. Stockfish rates it +0.27, a small advantage for White, and White scores just under 50% across tens of thousands of games.
How should White punish 3…Nf6 in the Aronin System?
Black's 3…Nf6 is a known inaccuracy that loses about 0.7 pawns. White should reply with 4.e5, kicking the knight away and gaining central space. After the knight moves, White develops quickly with d4 or O-O and enjoys a comfortable edge.
What is Black's best response to 3.Be2?
According to the engine, Black's strongest move is 3…d6, preparing …Nf6 and …e5 to challenge White's centre. The recommended continuation is 4.O-O Nf6 5.e5, after which White keeps a small but stable advantage.
What do the statistics say about White's chances after 3.Be2?
White wins 49.8% of games from this position, draws 3.8%, and Black wins 46.4%. That is a healthy practical score. Against every major Black reply — Nc6, e6, b5, d6, g6, even the inaccurate Nf6 — White scores between 48.9% and 53.2%.