East Indian Defense: what should Black play?

In the East Indian Defense (ECO A48), the position after White develops both knights to c3 and f3 presents Black with a key strategic choice. While the vast majority of practical games continue with kingside development via Bg7, the engine identifies the central stake d5 as the objective equalizer, assessing it at an even +0.00. Choosing between these options determines whether Black fights immediately for central space or allows White to establish a broad pawn presence with an early advance to e4.

The Engine Recommendation: d5

Engine analysis ranks d5 as Black's strongest option, evaluated at +0.00 across 7.4K recorded games (16.4% of the database). By striking at d5, Black firmly restrains White from pushing a pawn to e4 on the next turn. In the illustrative engine continuation d5 Bf4 Bg7 e3 O-O Nb5, White develops the dark-squared bishop outside the pawn chain before targeting c7, while Black secures king safety and maintains a level position.

The Practical Main Line: Bg7

In over-the-board practice, Bg7 represents the primary move, selected in 77.1% of recorded games (35K games). This natural continuation completes the fianchetto, though it permits White to claim spatial advantages in the center. Modern engines rate the position after Bg7 at +0.37 for White, pointing to dynamic play in the variation Bg7 e4 d5 e5 Ne4 h4, where White expands immediately on both the central files and the kingside.

Minor Alternatives

Other continuations occur with significantly lower frequency. Black adopts d6 in 4.7% of games (2.1K games), leading to a +0.58 evaluation after d6 e4 Bg7 Bg5 d5 exd5. Extremely rare setups include c6 (175 games, evaluated at +0.72) and a6 (15 games, evaluated at +0.65), both of which yield White comfortable control over the center with moves like a6 e4 d6 Bf4 Bg7 Qd2 or c6 e4 d6 Be3 Bg7 Qd2.