Chess Openings Lab
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Zukertort Opening: Sicilian Invitation

The Sicilian Invitation is 1...c5 against 1.Nf3, offering Sicilian or English structures. White can play 2.e4 for an Open Sicilian, 2.c4 for an English, or 2.e3 for a quiet setup.

Moves
1.Nf3 c5
ECO
A04
Engine
+0.37 · a slight edge for White (Stockfish 17.1, depth 20)
Played
5,717 games in our lichess sample
White scores
51.2%

Key ideas for both sides

White

  • 2.e4 Nc6 3.d4 cxd4 4.Nxd4 enters Open Sicilian lines with active piece play.
  • 2.c4 Nf6 3.d4 cxd4 4.Nxd4 leads to symmetrical English positions with central tension.
  • 2.e3 d5 3.d4 e6 4.c4 leads to Queen's Gambit structures with isolated pawn chances.

Black

  • Against 2.e4, ...Nc6 and ...e5 lead to Kalashnikov-style play with ...d6 against Nb5.
  • Against 2.c4, ...Nf6 and ...cxd4 with ...e6 and ...d5 reach a solid center.
  • Against 2.e3, play ...d5 and ...e6 for a solid Queen's Gambit structure.

Plans and pawn structure

This is a flexible move order. In the Open Sicilian, White uses the d4 knight and quick development, while Black strikes with ...e5 and ...d6 and uses the c-file. In the English lines, central tension decides the game, with both sides trading pawns on d4. In the 2.e3 lines, the game turns into a Queen's Gambit with chances of an isolated d-pawn.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.37: a slight edge for White. Its three top choices for White:

  1. +0.37 2.e4 Nc6 3.d4 cxd4 4.Nxd4 e5
  2. +0.25 2.c4 Nf6 3.d4 cxd4 4.Nxd4 e6
  3. +0.21 2.e3 d5 3.d4 e6 4.c4 Nf6

Pawns, from White's side.

How it scores on lichess

5,717 rated lichess games reached this position; White scored 51.2%.

under 120048.3%
1200–159950.0%
1600–199951.2%
2000 and up52.9%

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

Where it goes next

  • Speelsmet Gambit2.d4 · rare
  • Rhamphorhynchus Variation2.e3 · rare
  • Pterodactyl Defense2.c4 · rare

How to play against it

As White, choose a setup you know: 2.e4 for Open Sicilian play or 2.c4 for English structures. Don't play slowly and let Black grab the center with ...d5 and ...e5. In the Open Sicilian lines, answer ...e5 with Nb5 to hit d6, as the top engine line does.

Questions

What are the moves of the Zukertort Opening: Sicilian Invitation?

The Zukertort Opening: Sicilian Invitation starts 1.Nf3 c5. Its ECO code is A04.

Is the Zukertort Opening: Sicilian Invitation good for Black?

Stockfish 17.1 rates the position +0.37 at depth 20, which is a slight edge for White. In 5,717 lichess games from our sample, White scored 51.2%. A flexible move for Sicilian players, but it requires knowing English and Queen's Gambit lines too.

What is the main idea of the Zukertort Opening: Sicilian Invitation?

Black plays ...c5 and waits to see whether White chooses Sicilian, English or Queen's Gambit structures. Each choice leads to a different type of game.

What should White play next?

The engine's first choice is e4, with c4 and e3 close behind. 2.e4 enters Sicilian play, and after ...Nc6 and d4 White gets active piece play.

Updated October 2026. Sources and method.