Sicilian Defense: Staunton-Cochrane Variation with g6 – Guide for White

The move 2.c4 gives the Staunton-Cochrane its unique character. You're building a Maróczy Bind-style centre without committing the d-pawn too early. The pawn on c4 controls the d5 square, while the pawn on e4 eyes the centre from the other side. After 3.Nf3, you threaten d4 next, which would open the position while your centre pawns already cover key squares. Black's g6 signals a kingside fianchetto – they want to put pressure on d4 after you push it. Your job is to time that push correctly. If Black delays counterplay, you can expand further with d4, gaining space and handing Black a cramped position.

By far the most common reply is 3...Bg7, played in nearly 94,000 of the 109,585 games in the database. Black fianchettoes the bishop to challenge your centre from afar. From this position, your best plan is straightforward: play d4. Black will almost certainly capture ...cxd4, and after Nxd4 you have a comfortable Maróczy-style structure. Your knight sits on d4, your pawns on c4 and e4 control the centre, and you can develop your remaining pieces naturally. White scores 44.0% after Bg7 – slightly below overall but still a healthy share. The key is not to rush: develop calmly and don't fear the fianchettoed bishop, because your centre is well-supported.

The Stockfish engine at depth 16 recommends Black play 3...Nc6, rating it as best at +0.59. That might surprise you – it's not even the most popular move – but it makes sense. The knight develops, eyes d4, and prepares ...Bg7 without blocking the diagonal yet. The engine's continuation is Nc6 d4 cxd4 Nxd4, reaching a well-known tabiya. After 4...Bg7, you have a standard Sicilian structure where your knight on d4 is safe and you can finish development naturally. In the 10,336 games after Nc6, White scores 43.9% – almost identical to the Bg7 line. Treat both replies the same: push d4, recapture with the knight, and you'll reach positions you can play by feel.

Among Black's possible continuations, 3...e6 is classified as an inaccuracy that loses roughly 0.8 pawns. The engine says the better move was 3...d6. Why is e6 weak? It blocks the dark-squared bishop's fianchetto without contesting the centre, and it creates a hole on d6. Black's king's bishop is stuck behind the pawn chain, and you can occupy d5 with a knight or pawn later. After e6, your job is simple: play d4 immediately. Black can't pressure d4 with a bishop on g7 (it's blocked), so you gain a free space advantage. The 953 games after e6 show White scoring 48.8%, the second-highest win rate of all the statistically significant replies. Keep an eye out for this move – it's a sign your opponent doesn't know the line.