Indian Defense: Knights Variation: what should White play?

In the Indian Defense: Knights Variation, White faces an immediate decision regarding the advanced pawn on d5 and the active enemy piece on b4. The primary recommendations in this position are c4 and a3, both of which counter Black's forward piece and secure an opening advantage. Across 91,518 recorded games, solidifying central control remains White's most reliable strategy to maintain pressure.

Strategic choices: c4 versus a3

The standard positional approach is c4, which protects the advanced central pawn and earns an engine evaluation of +0.82. An illustrative continuation runs c4 a5 Nc3 g6 e4 d6, where White constructs a massive pawn center while Black organizes queenside piece play. Alternatively, the direct pawn kick a3 carries the highest engine assessment at +1.05. By immediately driving the knight away, White prepares rapid queenside expansion, demonstrated in the variation a3 Na6 Nc3 Nc5 b4 Nce4.

Alternative continuations

White may also develop pieces directly rather than committing pawns to the flank. The natural developing move Nc3 achieves an evaluation of +0.58 and frequently transitions into the sequence Nc3 c6 e4 cxd5 exd5 Qa5. Offering the central pawn with e4 is another viable alternative assessed at +0.48, leading to tactical complications after e4 Nxe4 Nc3 Nf6 a3 Na6. The quiet fianchetto setup with g3 (+0.05) is also seen, though lines such as g3 Nbxd5 e4 Nb4 e5 Ne4 allow Black immediate counterplay in the center.