ECO A15 · English Opening

English Opening: Anglo-Indian Defense, Slav Formation

1. c4 Nf6 2. Nf3 g6 3. g3 c6

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

4. b3+0.27

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

Analyze this position

In the English Opening: Anglo-Indian Defense, Slav Formation (A15), reached after 1. c4 Nf6 2. Nf3 g6 3. g3 c6, Stockfish 18 recommends 4. b3 for White. The position is roughly equal (+0.27).

Top engine moves

  1. +0.274. b3 Bg7 5. d4 d5 6. Bg2 O-O 7. Bb2 dxc4 8. bxc4 c5
  2. +0.274. Bg2 Bg7 5. b3 a5 6. d4 d5 7. Nc3 Ne4 8. Bb2 Nxc3
  3. +0.224. d4 d5 5. b3 Bg7 6. Bb2 O-O 7. Nbd2 a5 8. Bg2 a4

Frequently asked questions

What is the best move in the English Opening: Anglo-Indian Defense, Slav Formation?
After 1. c4 Nf6 2. Nf3 g6 3. g3 c6, Stockfish 18 at depth 18 recommends 4. b3 for White, continuing Bg7 5. d4 d5 6. Bg2 O-O 7. Bb2 dxc4 8. bxc4 c5. The position is roughly equal (+0.27). The next best moves are 4. Bg2 (+0.27) and 4. d4 (+0.22).
Is the English Opening: Anglo-Indian Defense, Slav Formation a good opening?
Stockfish rates the position at +0.27: 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 English Opening: Anglo-Indian Defense, Slav Formation?
A15. 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+).