ChessScreenshot

Catalan Opening

1.d4 Nf6 2.c4 e6 3.Nf3 d5 · E01–E09

Starting positionWhite to move

0 / 16

The long diagonal becomes active after exchanges

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The idea

White combines the Queen's Gambit with a kingside fianchetto, aiming the bishop down the long diagonal at Black's queenside.

Main line: 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.Qxc4 b5

What White wants

  • Regain the c4 pawn and press on the long diagonal and the c-file
  • Build slowly with Nf3, Qc2 and Rd1
  • Squeeze Black's queenside without allowing ...c5 to free the game

What Black wants

  • Hold the extra pawn with ...a6 and ...b5 or give it back for development
  • Free the position with ...c5 or ...e5
  • Trade pieces and neutralise the bishop on g2

Key idea

Understand this and the moves stop needing to be memorised.

The long diagonal becomes active after exchanges

The bishop on g2 aims along the diagonal through f3, e4, d5 and c6 toward b7. The f3 knight initially blocks its line. Central exchanges can release its pressure; Black uses ...dxc4, ...a6 and ...b5 to contest the queenside while White coordinates recovery and activity.

Common mistake

Expanding with ...a6 and ...b5 without checking White's active replies. These are established Catalan moves, not automatic mistakes; Black must calculate a4 and pressure along the diagonal, rather than assume the extra queenside space makes development unnecessary.

Mistake example: Bb7.

Representative position

The position this opening is aiming at. Copy the FEN, or open it in the analysis board and let the engine tell you what it is worth.

rnbq1rk1/2p1bppp/p3pn2/1p6/2QP4/5NP1/PP2PPBP/RNB2RK1 w - - 0 9

Analyze this position

Variations

1 line branching from here.

Related openings

Queen's Gambit Declined1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 · D30–D69Black holds d5 with ...e6 and accepts a slightly cramped but extremely solid position — the classical answer to 1.d4 for over a century.Queen's Pawn Opening1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 · D00–D69White stakes a claim in the centre with the queen's pawn and immediately challenges Black's d5 — the solid, positional counterpart to 1.e4.Neo-Grünfeld Defense1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 d5 · D70–D79White meets the Grünfeld's ...d5 with Nf3 and a kingside fianchetto, delaying Nc3. The game often centres on recovering c4 while the fianchettoed bishops influence the centre from opposite flanks.London System1.d4 Nf6 2.Nf3 e6 3.Bf4 d5 4.e3 Bd6 · D02White develops the dark-squared bishop outside the pawn chain before e3, then builds a familiar setup with Nf3, Bd3 and c3. The structure is practical, but plans still depend on Black's replies.Catalan: Closed Variation1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7 · E06–E08Black keeps the centre closed with ...Nbd7 and ...c6, declining the c4 pawn entirely and turning the game into a long, positional squeeze.