Catalan Opening

The Catalan Opening (1.d4 Nf6 2.c4 e6 3.g3, usually followed by ...d5 and Bg2) combines the Queen's Gambit with a kingside fianchetto. The set-up puts pressure mainly on Black's queenside. Vladimir Kramnik, Viswanathan Anand and Magnus Carlsen have all played it in world championship games.

Origins

The name honours Catalonia. At the 1929 Barcelona tournament, the organisers asked Savielly Tartakower to create a new variation in tribute to Catalonia's chess history. The opening had been played a few times before: Réti–Leonhardt, Berlin 1928, transposed into an Open Catalan. In the 1930s and 1940s it entered the repertoire of leading players such as the world champions Capablanca, Alekhine and Botvinnik. Garry Kasparov and Viktor Korchnoi played it five times in their 1983 Candidates semi-final. Vladimir Kramnik used it three times in the 2006 world championship, Viswanathan Anand four times against Veselin Topalov in 2010, and Magnus Carlsen played it in the second game of his 2021 match with Ian Nepomniachtchi.

The idea

White combines the d4 and c4 pawns of the Queen's Gambit with a kingside fianchetto. The pressure is mainly on the queenside, and the white king is meant to stay safe in the long term. The c4-pawn is left vulnerable: White is ready to give it up to open the h1–a8 diagonal for the g2-bishop. Against that bishop Black can play ...c6 or the manoeuvre ...Bd7–c6. White usually aims for queenside pressure and in the end for the advance e2–e4, with the queen ideally on c2.

Main lines

• Open Catalan 4...dxc4: Black takes the pawn and either tries to keep it with ...a6 and ...b5, or returns it for extra time to free the position. The classical line is 5.Nf3 Be7.
• Closed Catalan with ...Be7, ...O-O, ...Nbd7 and ...c6: Black does not capture on c4 and gets a position that is quite solid but can be somewhat cramped for a while, as in the main line with Qc2 and Nbd2.
• Lines with ...Bb4+, which aim to make White misplace a piece, usually the dark-squared bishop on d2.

Strengths and weaknesses

Strengths

• Safe and solid for White, with long-lasting pressure and few risks.
• Played in the world championship matches of 2006, 2010 and 2021.
• Positions are mostly strategic, although the theory is extensively developed and some lines are forcing.

Weaknesses

• Black has solid ways to equalise, and the pressure can fizzle out if White plays without a plan.
• The Open Catalan needs concrete knowledge about how to win back the c4-pawn.
• It is slow: players who want quick attacks may find it dull.

Who should play it

The Catalan suits positional 1.d4 players who like long-term pressure, endgames and piece play, and who want an opening that also works at the top. It is effective against players who defend passively or don't know how to free the c8-bishop. It is less effective against well-prepared opponents who know the Open Catalan and give the pawn back at the right time.

The numbers

On Lichess White wins 52–53% and Black 41.5–43.4% below 2200, and 50.1% against 41.1% above it. In master games over the board 52.6% are drawn, White wins 27.3% and Black 20.2%.