Chessy
Sicilian Defense: Open — what to do as White
After 1.e4 c5 2.Nf3 Nc6 3.d4, you reach the Open Sicilian. This is a sharp, practical opening choice where you challenge Black right away and ask the first important question in the centre. In the position below it is Black to move, and your task is to steer the game with White. The drill will train you on the most important reply, the common alternatives, and the moves that tend to go wrong.
Play the Sicilian Defense: Open against the engine
Free, no signup — you play white, the engine adapts to your level.
Play the drill now and practise the critical reply against an adapting engine. Create a free account to keep training this opening.
Create a free account →The first test in the centre
The Open Sicilian starts with an early central challenge. By playing 3.d4, White opens the position and invites a direct response. That usually leads to active piece play and an unbalanced middlegame, which is exactly why this opening is so popular. In the position you will drill, the engine’s best move is cxd4, and that is the reply you should expect most often. Your job is to stay calm, keep developing, and be ready for an open fight.
What the numbers say here
Stockfish rates this +0.38, a small edge for White. That means you are slightly better here. The database confirms that this is a very live position: across 24,531,072 games, White wins 49.7%, draws 4.0%, and Black wins 46.3%. In other words, this is not a quiet equalising system for Black; White gets a playable position with real chances, but you still need accurate moves.
Black’s most common replies
The main reply is cxd4, with 21,552,387 games and White scoring 48.7%. That is the critical move to know well, because it is also the engine’s best move. The other replies you will meet in the drill are less common but still worth knowing: e6, d6, b6, d5, and g6. These moves can appear in practice, so the goal is not just memorising one line, but recognising how to meet different setups without drifting into passivity.
Mistakes you can punish
The database marks a few replies as going wrong. e6 is a mistake and loses about 1.1 pawns, with cxd4 better. d6 is an inaccuracy and loses about 0.6 pawns, again with cxd4 better. b6 is also a mistake and loses about 1.4 pawns, with cxd4 better. If Black chooses one of these, you should still rely on sound development and central control, but it helps to know that these choices are already less accurate than the main capture.
Results across 24,531,072 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| cxd4 | 21,552,387 | 48.7% |
| e6 | 1,338,624 | 55.9% |
| d6 | 553,561 | 57.4% |
| b6 | 194,387 | 60.1% |
| d5 | 179,401 | 57.2% |
| g6 | 174,496 | 54.3% |
Frequently asked questions
What is the Sicilian Defense: Open?
It is the position after 1.e4 c5 2.Nf3 Nc6 3.d4. White has challenged the centre early, and Black to move must decide how to respond. This opening usually leads to open, active play rather than a locked pawn structure.
What is the best move for Black in this position?
The engine’s best move is cxd4, continuing cxd4 Nxd4 Nf6 Nc3. That is the main reply to learn in the drill. It is also the most-played continuation by a wide margin.
Is White better here?
Yes, only slightly. Stockfish gives +0.38, which is a small edge for White. You are not winning by force, but you do have a pleasant position and practical chances.
Which replies should I be ready for as White?
The most-played continuations are cxd4, e6, d6, b6, d5, and g6. The drill will help you recognise the main capture and the less common alternatives. It is especially useful to know that e6, d6, and b6 are marked as inferior choices.
How many games feature the Sicilian Defense: Open?
Over 25 million Lichess games have reached the Sicilian Defense: Open position. White wins 49.7%, Black wins 46.3%, with 4.0% draws — based on real rated games.