1.g4 d5 2.Bg2 Bxg4 3.c4 opens the Grob's Attack: Fritz Gambit, ECO A00. Across rating levels it shows up in 1,357,323 recorded games — enough data to map exactly where it succeeds and where it stalls.
History and Notable Players
It arises from the Grob's Attack.
Performance Across Rating Levels
Popularity and results vary sharply by rating level. The 1200 bracket has 82,643 games (0.01% of all games at that level); White wins 54.7%, Black 42.5%, 2.8% are drawn. Move up to 1800 Elo and the share shifts to 0.05%, with White winning 56.5% versus Black's 40.1%. At the top end (2500+ Elo), popularity is 0.01% with 5.7% draws — a clear sign of how much theory rules the line at master level. White's edge erodes by 7.4pp from 1200 to 2500 Elo, suggesting Black's counterplay is easier to find with experience.
Time Control Patterns
Time control matters here: blitz players reach for this opening more than others. In bullet, it appears in 0.02% of games (622,446); White wins 59.2%. Blitz shows 0.03% adoption across 1,126,670 games, White scoring 56.3%. In rapid, the share rises to 0.02% — 230,653 games, White 53.5%. White's score swings 5.7pp across formats, so time control isn't just a stylistic choice here — it shifts the actual results.
Move Diversity and Theory Depth
Move choice is far from uniform in the Grob's Attack: Fritz Gambit. At 1200 Elo, the top reply is c6, played 26.6% of the time. There are 5 other moves seeing meaningful share, and 64.2% of games stick to established theory. Entropy: 2.58. By 2500, c6 dominates at 46.5% of replies; only 6 viable alternatives remain and 73.2% of moves are theory. Entropy drops to 2.31.
Historical Trends
Long-term, the trajectory of this opening is informative. Adoption peaked in 2017 at 0.03% (38,511 games). By 2025 it sits at 0.03% — a 317% shift overall, leaving the line on the rise.
Main Lines and Variations
The main branches off 1.g4 d5 2.Bg2 Bxg4 3.c4 include:
Each branch leads to a different middlegame character — the resulting pawn structure decides what kind of game you get.
Common Mistakes
- Neglecting development — It can feel productive to make extra pawn moves early, but falling behind in piece development is what loses most amateur games — especially in open positions where active pieces find squares fast.
- Overextending the attack — Gambits look like permission to throw everything forward. They aren't — every attacking move should improve a piece. Random checks and threats burn the initiative once they fail to coordinate.
Practice on Chessiverse
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