Benoni Defense: Old Benoni: what should Black play?

In the Benoni Defense: Old Benoni after White reinforces the center with an early pawn push to c3, Black's most accurate theoretical response is d5. This central thrust immediately equalizes the game, earning an engine evaluation of +0.07 while contesting space before White can establish a broad pawn front. Although played in only 6.5% of recorded games (424K recorded), it effectively neutralizes White's initiative and limits White to a 50.6% scoring rate.

Central Clarification with d5

The primary merit of d5 is that it forces White to clarify the central tension immediately. Rather than conceding space or trading passively, Black demands an answer against the d4 pawn. An illustrative engine continuation demonstrates this dynamic: d5 dxc5 Nf6 b4 a5 e3. In this sequence, Black attacks White's advanced queenside structure right away, ensuring active piece play and solid central presence.

Popular Alternatives

By far the most common human choice is cxd4, which appears in 69.2% of games (4.48M recorded) and yields an engine evaluation of +0.15. While completely playable, it resolves the central tension prematurely, allowing White a 51.7% score after the standard recapture shown in the line cxd4 cxd4 Nf6 Nf3 d5 Nc3. Another solid option is the flexible developing move Nf6, sharing the top engine evaluation of +0.07 across 426K recorded games (6.6%), leading into Nf6 Nf3 d5 dxc5 e6 Be3 where White scores 49.1%.

Passive Setups

Black also frequently tests e6, chosen in 15.6% of encounters (1.01M recorded, +0.17 eval), where play can transpose toward French-style structures after e6 e4 d5 e5 Nc6 Nf3, conceding a 51.9% score to White. The fianchetto attempt g6 is rarer at 2.1% (134K recorded) and evaluates at +0.52, leading to g6 dxc5 Nf6 Nf3 Bg7 g3 with White scoring 49.2%.