Sicilian Defense: Smith-Morra Gambit: what to play after d4?

In the Sicilian Defense: Smith-Morra Gambit (ECO B21), Black's overwhelmingly standard response is cxd4, which accepts the central challenge and maintains near-perfect equality with an engine evaluation of +0.06. Capturing on d4 is chosen in 75.3% of the 3.90M recorded games at this position, allowing Black to eliminate a central pawn before White can consolidate. Other alternatives concede significant space in the center, making the pawn capture the primary theoretical test.

Acceptance with cxd4

Choosing cxd4 liquidates White's central d4 and directly tests White's opening scheme. Having appeared in over 2.93M recorded games, this move yields the lowest engine evaluation among all candidates at +0.06. An illustrative continuation demonstrates central counterplay via cxd4 Nf3 e5 c3 Nc6 cxd4, where Black strikes back in the center and activates minor pieces while White attempts to maintain central control.

Solid Alternative: e6

The most common alternative is e6, selected in 8.7% of games (339K recorded). This move declines the capture on d4 in favor of solidifying the pawn structure and shielding the f7 square. The engine rates this position at +0.59, where play may unfold via e6 d5 Nf6 Nc3 d6 Bb5+, with White securing a spatial plus by pushing to d5.

Minor Options and Offbeat Tries

Other choices are far less common and hand White a clearer positional edge. The flank setup g6 occurs in 0.8% of recorded games (32K recorded) with an evaluation of +0.71, as shown in g6 dxc5 Bg7 Nc3 Bxc3+ bxc3. A central strike via d5 scores +0.87, featuring an immediate queen trade in d5 dxc5 Nf6 exd5 Qxd5 Qxd5. Finally, the passive a6 appears in just 0.2% of games (9.7K recorded) and leaves Black evaluated at +0.93 after a6 d5 g6 c4 d6 h3.