ECO A57 · Benko Gambit Declined

Benko Gambit Declined: Bishop Attack

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Bg5

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Black to move. The arrow shows Stockfish’s best move.
Best move

4… Ne4−0.12

The position is roughly equal. Stockfish 18, depth 18.

Analyze this position

In the Benko Gambit Declined: Bishop Attack (A57), reached after 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Bg5, Stockfish 18 recommends 4… Ne4 for Black. The position is roughly equal (−0.12).

Top engine moves

  1. −0.124… Ne4 5. h4 g6 6. cxb5 Bg7 7. Qc2 Qa5+ 8. Nd2 Nxg5 9. hxg5
  2. +0.014… Qa5+ 5. Nd2 bxc4 6. Bxf6 exf6 7. e4 g6 8. Ne2 Bh6 9. Nc3
  3. +0.044… b4 5. a3 g6 6. axb4 cxb4 7. Nd2 Bg7 8. e4 d6 9. c5

Frequently asked questions

What is the best move in the Benko Gambit Declined: Bishop Attack?
After 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Bg5, Stockfish 18 at depth 18 recommends 4… Ne4 for Black, continuing 5. h4 g6 6. cxb5 Bg7 7. Qc2 Qa5+ 8. Nd2 Nxg5 9. hxg5. The position is roughly equal (−0.12). The next best moves are 4… Qa5+ (+0.01) and 4… b4 (+0.04).
Is the Benko Gambit Declined: Bishop Attack a good opening?
Stockfish rates the position at −0.12: the position is roughly equal. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Benko Gambit Declined: Bishop Attack?
A57. ECO codes classify chess openings from A00 to E99; A is the volume for flank openings.

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).