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Catalan Opening: Open Defense

ECO code
E02
Moves
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About this variation

Black takes on c4 and tries to keep or return the pawn on good terms. White's bishop on g2 then becomes especially strong.

The Open Defense of the Catalan arises after 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4. Black takes the c4 pawn and opens the long diagonal for White's bishop on g2, but in return gets free development and the chance to keep the pawn for a while with ...a6 and ...b5. It is one of the two main ways to meet the Catalan in master games, alongside the Closed set-up with 4...Be7.

White's usual plan is to castle, then win the pawn back with Qc2 or Qa4+ and Qxc4, or with Ne5 and Nxc4 in some lines. White's bishop on g2 presses against Black's queenside, especially the b7 and a8 squares, so Black has to be careful about the timing of moves such as ...b5 and ...c5.

Black's main ideas are to develop with ...Be7, ...O-O and ...Nbd7 or ...Nc6, to play ...c5 to challenge White's center, and to solve the problem of the light-squared bishop with ...b6 and ...Bb7 or ...b5 and ...Bb7. If Black completes development smoothly, the position is roughly level and very solid.

White's long-term trumps are the bishop on g2 and the pressure along the long diagonal, which can leave Black with a weak c-pawn or a backward queenside. White often aims for a slightly better endgame where the bishop is stronger than Black's minor pieces, a type of position in which Catalan players are very comfortable.

The Open Defense suits Black players who like classical, active development and are willing to accept some pressure in exchange for a sound position. Many strong players use it as their main answer to the Catalan, and its plans are easy to understand once the role of the g2 bishop is clear.

A common mistake for Black is to cling to the extra pawn too long, leaving the queenside weak and the pieces undeveloped. A common mistake for White is to regain the pawn slowly and allow Black to finish development with ...c5 under ideal conditions. Both sides do best by focusing on piece activity rather than material.

It is one of the main lines of the Catalan Opening.

Catalan Opening: Open Defense statistics

The Catalan Opening: Open Defense was reached in 15,554 master games (<0.1% of all master games), and White scored 51% from there. On Lichess it comes up in <0.1% of games, most often among players rated 2201–2400 (<0.1%).

Master games

15,554

<0.1% of games between players rated 2500+

Club games on Lichess

8,575

<0.1% of games between players rated up to 2400

White wins Draws Black wins

How often it comes up, by rating

  • 1001–1200 <0.1%
  • 1201–1400 <0.1%
  • 1401–1600 <0.1%
  • 1601–1800 <0.1%
  • 1801–2000 <0.1%
  • 2001–2200 <0.1%
  • 2201–2400 <0.1%

Most common next moves in master games

MoveGamesPlayedResults
5. Nf313,27085%
5. Qa4+2,09213%
5. Nc3920.6%
5. Na3210.1%
5. Nd2200.1%

Famous players with the most games here

  • Eric Rosen 50 games
  • Wesley So 21 games
  • Daniel Naroditsky 20 games
  • Rameshbabu Praggnanandhaa 17 games
  • Anatoly Karpov 15 games
  • Dommaraju Gukesh 8 games

Master games from the Chessmont database (CC BY-SA 4.0). Club games from the Lichess open database.

Other Catalan Opening variations