Play the Sicilian Defense: Morphy Gambit: g6 as White

In most Sicilian lines, the light-squared bishop goes to e2 or d3. Here, 4.Bc4 is more aggressive — it eyes the weak f7 square and supports a quick e5 push. Black has just fianchettoed with g6, so the bishop on c4 also puts pressure on the dark-squared bishop's diagonal. The idea is simple: develop with a threat and dare Black to prove the g6 setup is solid. Because the position is dead level (+0.15), neither you nor your opponent has a head start — the game will be decided by who understands the resulting structures better.

By far, Black's favourite move here is 4...Bg7, appearing in 25,859 games. It's the natural fianchetto follow-up, completing the development of the kingside bishop. Unfortunately for White, Black scores a solid 53.6% from this continuation (White only 46.4%). That doesn't mean you're lost — it means you need a plan. Your typical response should involve castling kingside, controlling the centre with c3 or e5, and preparing to exploit the half-open d-file. This is a strategic fight, not a tactical blowout.

Stockfish's top recommendation for Black is 4...Nf6, even though it's the least popular of the main replies (just 563 games in the database). The engine's line runs 4...Nf6 5.e5 d5 6.Bb3, where Black immediately challenges your central space. You score a healthy 50.1% here — slightly above your overall average in this position. Notice the idea: after 5.e5, Black can't retreat the knight to g8 (too passive), so they play 5...d5, hitting your pawn centre. Your bishop drops back to b3, maintaining pressure. This is a critical line to know because it tests whether you can handle a tense, closed centre.

Black can go wrong quickly in this position. Two inaccuracies stand out in the data: 4...e6 and 4...e5. Both lose material or positional ground compared to the better move 4...Nc6. If Black plays 4...e6, the evaluation drops by roughly 0.6 pawns in your favour — they block their own light-squared bishop and weaken the d5 square. Even worse is 4...e5, a blunder-level inaccuracy losing about 0.8 pawns. Black tries to close the centre prematurely, but your bishop on c4 already eyes f7 and Black's own centre becomes a liability. When you see either of these moves, increase your confidence: you've already gained a tangible edge.

The numbers from over 34,000 games paint an honest picture. White wins 47.0%, draws 2.9%, and Black wins 50.1% — so you're fighting for equality, not an advantage. Yet notice the trend: as Black's moves become less common, your results improve. Against 4...Bg7, your win rate is 46.4%; against 4...Nc6 it climbs to 47.5%; against 4...e6, 49.4%; and against 4...Nf6 or 4...e5, you cross 50%. Translation: the more Black knows what they're doing (i.e., the most popular lines), the tougher your task. Your job in this opening is to steer the game toward positions where Black hasn't studied as deeply, and to punish inaccuracies like 4...e6 or 4...e5 when they appear.