The Modern Defense: Robatsch Variation arises after 1.e4 g6 and falls under ECO code B06. Also called the Robatsch Defence after Karl Robatsch, this hypermodern system sees Black fianchetto their bishop to g7, deliberately conceding space and a classical pawn center to White with the plan of undermining it later. The approach shares common ground with the Pirc Defence (1...d6), but differs in an important way: the Pirc commits to ...d6 early because Black intends ...Nf6 to pressure e4 and needs to prevent e5 in response. In the Modern, Black postpones the decision about the g8 knight entirely, prioritizing the fianchetto with 1...g6 and 2...Bg7, though ...d6 and ...Nf6 often follow later. White typically seizes the center with 2. d4, and after 2...Bg7 has several options: the standard 3. Nc3 d6, or since Black has not yet played ...Nf6 to challenge e4, White can try 3. c4 to reach a King's Indian Defence-type structure, or simply 3. Nf3. Historically, 1...g6 appeared as early as the 19th century, usually paired with 2...e6, but in an era that favored open tactical play, this setup was considered weak. Its reputation suffered further when Wilhelm Steinitz defeated Augustus Mongredien's Modern Defence in under 30 moves, and it took decades before players learned to harness the opening's inherent flexibility and dynamic potential. With 78 million Lichess games across all rating levels, it is a well-established opening choice.
History and Notable Players
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 38.1 million Lichess games across all rating levels:
- White wins: 49.4%
- Black wins: 46.2%
- Draws: 4.4%
The statistics show a roughly balanced opening where both sides have equal chances.
Common Mistakes to Avoid
- 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.
Practice on Chessiverse
The best way to learn the Modern Defense: Robatsch Variation 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.
Performance Across Rating Levels
The picture changes a lot as you climb the rating ladder. The 1200 bracket has 3,681,894 games (0.55% of all games at that level); White wins 48.7%, Black 47.4%, 3.9% are drawn. At 1800 the opening surfaces in 1.06% of games; White wins 50.1%, Black 45.5%, draws 4.4%. At 2500, 1.53% of games go into this opening; draws sit at 8.7% — the line is well-mapped at this level.
Time Control Patterns
Look at the same opening across time controls and bullet stands out. In bullet, it appears in 2.60% of games (69,239,622); White wins 48.5%. Blitz shows 1.79% adoption across 64,191,206 games, White scoring 48.8%. In rapid, the share rises to 1.25% — 13,845,656 games, White 49%.
Move Diversity and Theory Depth
Looking at move selection shows how forcing — or not — the position really is. At 1200 Elo, the top reply is d4, played 34.6% of the time. There are 4 other moves seeing meaningful share, and 78.7% of games stick to established theory. Entropy: 2.47. By 2500, d4 dominates at 81% of replies; only 2 viable alternatives remain and 92.1% of moves are theory. Entropy drops to 1.15. That entropy collapse is the signature of a line where preparation pays off: at the top, players know the best move and play it.
Historical Trends
Year-over-year data tells you whether this opening is a contemporary fixture or a fading one. Adoption peaked in 2024 at 1.72% (12,817,395 games). By 2025 it sits at 1.71% — a 10% shift overall, leaving the line flat.
