Chess Openings Lab
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Benoni Defense: Benoni-Indian Defense

The Benoni-Indian Defense is 1.d4 c5 2.d5 Nf6, where Black develops before deciding how to hit d5. White can play c4 to reach main Benoni or Benko lines, or keep the c-pawn back with Nc3 and e4; Black prepares ...e6, ...d6 or ...b5.

Moves
1.d4 c5 2.d5 Nf6
ECO
A43
Engine
+0.72 · a slight edge for White (Stockfish 17.1, depth 20)
Played
1,174 games in our lichess sample
White scores
55.0%

Key ideas for both sides

White

  • 3.Nc3 and e4 build a broad center without c4, as in the top engine line.
  • Use Bb5+ or Bc4 to develop the light bishop actively, since the c4 square stays free.
  • 3.c4 b5 4.cxb5 transposes to the Benko, so choose 3.c4 only if you know that territory.

Black

  • Hit d5 with ...e6 and follow with ...d6 and ...Be7 or a fianchetto, aiming for Benoni structures.
  • Against 3.Nf3, the gambit ...b5 4.e4 Nxe4 grabs the pawn back with play, as one engine line shows.
  • After Bb5+, block with ...Bd7 and trade light bishops to ease the space problem.

Plans and pawn structure

Without c4, White keeps the c-pawn flexible and can use the c4 square for a bishop or knight. Black's plan is still Benoni-like: ...e6 to open the e-file, ...d6, a dark bishop on e7 or g7, and queenside expansion with ...a6 and ...b5. White wants e4 and later e5 or f4, backed by Nc3 and Nf3. The missing c4 pawn leaves d5 with less pawn support but gives White's pieces more room.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.72: a slight edge for White. Its three top choices for White:

  1. +0.72 3.Nc3 e6 4.e4 d6 5.Bb5+ Bd7
  2. +0.65 3.Nf3 b5 4.e4 Nxe4 5.Bd3 Nf6
  3. +0.60 3.c4 b5 4.cxb5 a6 5.e3 e6

Pawns, from White's side.

How it scores on lichess

1,174 rated lichess games reached this position; White scored 55.0%.

under 120046.2%
1200–159958.0%
1600–199955.4%
2000 and up54.3%

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

Where it goes next

  • Benoni-Indian Defense, Kingside Move Order3.Nf3 · rare
  • Woozle3.Nc3 · rare

How to play against it

Play 3.Nc3 and e4 for a free center, or 3.c4 if you like main-line Benoni or Benko positions. Watch for ...b5 offers when your pieces are not ready to take. Avoid slow moves that let Black play ...e6 and ...exd5 with easy equality.

Questions

What are the moves of the Benoni Defense: Benoni-Indian Defense?

The Benoni Defense: Benoni-Indian Defense starts 1.d4 c5 2.d5 Nf6. Its ECO code is A43.

Is the Benoni Defense: Benoni-Indian Defense good for Black?

Stockfish 17.1 rates the position +0.72 at depth 20, which is a slight edge for White. In 1,174 lichess games from our sample, White scored 55.0%. A flexible move order for Benoni players, while White gets easy development and a choice of structures.

What is the main idea of the Benoni Defense: Benoni-Indian Defense?

Black develops the knight before choosing a pawn structure, keeping options like ...e6, ...d6 and ...b5. White decides whether to play c4 for main-line Benoni positions or Nc3 and e4 for a broad center.

What should White play next?

The engine's first choice is Nc3, with Nf3 and c4 close behind. 3.Nc3 supports e4 and keeps the c-pawn back, so White's light bishop can use c4 or b5.

Updated October 2026. Sources and method.