Modern Defense

B061.e4 g6
Feb 20, 2026
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TL;DR

1...g6 is the Modern defence, also known as the Robatsch defence after Karl Robatsch . Black prepares to fianchetto their bishop to g7.

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Modern Defense: A Complete Guide
Modern Defense - Opening Moves
Summary

The Modern Defense arises after 1.e4 g6 and falls under ECO code B06. 1...g6 is the Modern defence, also known as the Robatsch defence after Karl Robatsch . Black prepares to fianchetto their bishop to g7. It is a hypermodern opening: Black allows White space and a classical centre, hoping to undermine it later. This is a similar idea to the Pirc, 1...d6 . In the Pirc player wants to play Nf6 and pressure e4, but needs d6 first to prevent White from playing e5!. In the Modern, Black delays a decision on the g8 knight and so doesn't need to commit to d6 just yet. They prioritise the fianchetto with with 1...g6 and 2...Bg7 instead (but d6 and Nf6 may come later). White usually takes the centre with 2. d4 and Black completes the fianchetto with 2...Bg7. After that White has options: usually 3. Nc3 d6 follows, but since Black hasn't played Nf6 to threaten e4, White can try 3. c4, obtaining structure normally seen against the King's Indian defence, or 3. Nf3. The first modern defences were played in the 19th century and involved 1...g6 and 2...e6 setup. That setup was horrible at a time when people were used to playing open, tactical games, and as a result, 1...g6 was considered to be a very bad opening. Its reputation was sealed when Wilhelm Steinitz beat Augustus Mongredien's Modern defence in under 30 moves. No one knew how to use its flexibility and dynamism to its potential. With 55,535 games in the master database, it is a well-established opening choice.

History and Notable Players

It arises from the King's Pawn Game. Among the most prolific practitioners on the White side are Heikki MJ Westerinen (62 games), Michele Godena (54 games), Evgeny Sveshnikov (44 games). On the Black side, notable exponents include Colin Anderson McNab (323 games), Boris Chatalbashev (187 games), Peter Petran (182 games).

Statistics

Based on 55,535 master-level games:

  • White wins: 37.2%
  • Black wins: 34.7%
  • Draws: 28.1%

The statistics show a roughly balanced opening where both sides have equal chances.

Common Mistakes to Avoid

  • Neglecting development: In the Modern Defense, it can be tempting to make extra pawn moves early on. However, falling behind in development can be punished quickly, especially in open positions where opponent pieces can find active squares.
  • Allowing White to build an overwhelming center: Hypermodern openings allow White space in the center, but you need to strike back at the right moment. Delaying the counterattack too long can leave you without active play.
  • Playing without a plan: Each position in the Modern Defense demands a specific approach. Understand whether you should be attacking, defending, or maneuvering before making your move. Random moves lead to random results.
  • Forgetting about piece coordination: Chess pieces are strongest when they work together. A single piece attacking alone is easy to defend against, but coordinated pieces can create unstoppable threats.

Practice on Chessiverse

The best way to learn the Modern Defense is through practice. On Chessiverse, you can play chess against computer opponents that specialize in this opening. Our AI bots range from beginner to grandmaster level, each with unique playing styles — from aggressive attackers to solid defenders. Choose a bot that matches your rating and work your way up as you master the opening's key ideas.

Quick Facts

Main Line1.e4 g6
FENrnbqkbnr/pppppp1p/6p1/8/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2
ECO CodeB06
DifficultyBeginner
Parent OpeningKing's Pawn Game
Style

Hypermodern openings let the opponent occupy the center with pawns, then attack it from the flanks with pieces and fianchettoed bishops. Control is exerted from a distance rather than by direct occupation.

55,535games in database
37.2%
28.1%
34.7%
White wins Draws Black wins

Top Players

Data from 365chess.com

Play this opening as...

Training Recommendations

Targeted drills using our bots' unique playstyles to sharpen your skills in this opening.

First Steps in the Modern Defense

beginner

Benny Dovetail is a defensive Observer who thrives in complex positions, while Sasha Kingly is an aggressive Savage who thrives in complex positions. Practice at the beginner level to learn the basic patterns.

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Building Foundations in the Modern Defense

novice

Juan Diagonal is a defensive Observer who thrives in complex positions, while Odin Bjerke is a balanced Mediator with a well-rounded approach. Practice at the novice level to solidify your understanding.

Sharpening Your Play in the Modern Defense

intermediate

Marge Pie is an aggressive Savage who thrives in complex positions, while Wendy Wind is a balanced Mediator with a well-rounded approach. Practice at the intermediate level to handle sharper positions.

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Proving Your Preparation in the Modern Defense

skilled

Layla O'Connor is a balanced Mediator with a well-rounded approach, while Olive Oyl is a defensive Observer who thrives in complex positions. Practice at the skilled level to test your preparation.

Master-Level Challenge in the Modern Defense

advanced

Brooke Rivers is an aggressive Hunter who prefers to simplify, while Sonny Day is a balanced Mediator with a well-rounded approach. Practice at the advanced level to face master-level opponents.

Frequently Asked Questions

What is the Modern Defense?

The Modern Defense begins with 1.e4 g6 and is classified under ECO code B06. 1...g6 is the Modern defence, also known as the Robatsch defence after Karl Robatsch .

Is the Modern Defense good for beginners?

The Modern Defense can be played at any level. Beginners should focus on understanding the key strategic ideas rather than memorizing long theoretical lines. Our AI bots at various rating levels provide a great way to practice the opening concepts.

What are the win rates for the Modern Defense?

In a database of 55,535 master games, White wins 37.2% of the time, Black wins 34.7%, and 28.1% are drawn. Notable players on the White side include Heikki MJ Westerinen and Michele Godena. On the Black side, Colin Anderson McNab and Boris Chatalbashev are among the most frequent practitioners.

How can I practice the Modern Defense?

On Chessiverse, you can practice the Modern Defense against AI bots specifically designed to play this opening. Our bots range from beginner (around 801 rating) to advanced (2673+ rating), so you can find the right challenge for your level.

Written by

Chessiverse
Chessiverse TeamOpening Guides

Expert chess content backed by opening theory and our database of 600+ AI bots with unique playing styles and opening repertoires.

Practice This Opening on Chessiverse

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