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A05

Zukertort Opening

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Overview

Zukertort Opening is a named branch in the Flank Openings group of chess theory, classified under ECO A05.

The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.

It begins with 2 plies and takes 1. Nf3 Nf6 to reach the canonical position.

It branches immediately from Zukertort Opening in the opening tree.

10 distinct sub-variations branch from this opening; prominent examples include King's Indian Attack, King's Indian Attack: Spassky Variation, King's Indian Attack: Symmetrical Defense, and others.

Together the deeper variations number 22 across the full subtree.

Use the board to walk through every move, check how the position has scored on Lichess, or take it head-to-head against Stockfish.

ECO code
A05
Group
Flank Openings (A)
Plies
2
Parent
Zukertort Opening
Direct variations
10
Total in subtree
22

This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.

Statistics from Lichess

18,562,771 games · White 49.1% / Draw 6.5% / Black 44.4%

MovesGamesW / D / B
g35,416,682
d45,034,782
c44,330,340
b31,131,177
Nc3804,650
d3710,528
e3660,954
e4164,853

Source: Lichess Opening Explorer · cached 2026-09-26 00:36:54

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Variations (10)

Show all 22 sub-variations (full subtree)