Tree path 3 levels Queen's Pawn Game › Modern Defense › Modern Defense
A41

Modern Defense

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Overview

Modern Defense is a named branch in the Flank Openings group of chess theory, classified under ECO A41.

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

It is reached after 6 plies of play, with the move sequence 1. d4 g6 2. c4 Bg7 3. Nc3 d6.

In the opening tree, this line branches off from Queen's Pawn Game: Modern Defense, part of the broader Queen's Pawn Game system.

It continues primarily into one named line, Averbakh System.

In total, the branch covers 3 sub-variations across all depths.

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
A41
Group
Flank Openings (A)
Plies
6
Parent
Queen's Pawn Game: Modern Defense
Direct variations
1
Total in subtree
3

This overview is generated automatically from the opening's metadata. A more detailed, human-written description is on the way — and you can speed it up by suggesting one yourself.

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Variations (1)

Show all 3 sub-variations (full subtree)