ECO E09 · Catalan Opening

Catalan Opening: Closed Variation, Traditional Variation

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Nbd2 b6

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

9. e4+0.49

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Catalan Opening: Closed Variation, Traditional Variation (E09), reached after 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Nbd2 b6, Stockfish 18 recommends 9. e4 for White. White is slightly better (+0.49).

Top engine moves

  1. +0.499. e4 dxc4 10. Nxc4 Bb7 11. Rd1 c5 12. e5 Nd5 13. Qe4 Ba6
  2. +0.409. Rd1 Bb7 10. e4 c5 11. exd5 exd5 12. dxc5 Nxc5 13. Nd4 Ne6
  3. +0.249. b3 Bb7 10. Rd1 c5 11. cxd5 Nxd5 12. Nc4 Nb4 13. Qd2 Nf6

Frequently asked questions

What is the best move in the Catalan Opening: Closed Variation, Traditional Variation?
After 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Nbd2 b6, Stockfish 18 at depth 18 recommends 9. e4 for White, continuing dxc4 10. Nxc4 Bb7 11. Rd1 c5 12. e5 Nd5 13. Qe4 Ba6. White is slightly better (+0.49). The next best moves are 9. Rd1 (+0.40) and 9. b3 (+0.24).
Is the Catalan Opening: Closed Variation, Traditional Variation a good opening?
Stockfish rates the position at +0.49: white is slightly better. 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 Catalan Opening: Closed Variation, Traditional Variation?
E09. ECO codes classify chess openings from A00 to E99; E is the volume for indian defenses.

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