The Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation (9...Be7) begins with 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.0-0-0 Bd7 9.f4 Be7 (ECO B68). Across rating levels it shows up in 30,116 recorded games — enough data to map exactly where it succeeds and where it stalls.
History and Notable Players
It arises from the Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation. Among the most prolific White practitioners are Janis Klovans (11 games), Lothar Vogt (7 games), Walter S Browne (7 games). Black-side regulars include Lars Ake Schneider (22 games), Alon Greenfeld (12 games), Anton Demchenko (11 games).
Performance Across Rating Levels
The picture changes a lot as you climb the rating ladder. Among 1200-rated players, it appears in 0.00% of games — 38 of them on record — with White winning 36.8% and Black 55.3%. By 1800, popularity is 0.00% and White's score is 50% to Black's 44.2%. At the top end (2500+ Elo), popularity is 0.04% with 9% draws — a clear sign of how much theory rules the line at master level. White's score improves by 9.8pp from the 1200 bracket to the 2500 bracket — the line rewards preparation.
Move Diversity and Theory Depth
What players actually play after the opening moves depends heavily on rating. Below 1400 the samples are small (38 games at 1200), so the comparison starts at 1400, with 223 games. There, the top reply is Nf3, played 17.7% of the time. Seven other moves each take at least 5% of games, and the top three moves account for 49.8% of games. Entropy: 3.29. By 2500 (5,106 games), Nf3 dominates at 62.1% of replies; only two other moves still reach 5% and the top three moves account for 83.6% of games. Entropy drops to 2.00. The narrowing is significant — strong players consolidate around a small set of best moves, while amateurs scatter across many plausible-looking options.
Main Lines and Variations
The main branches off 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.0-0-0 Bd7 9.f4 Be7 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.
- Ignoring the kingside attack — In sharp Sicilian lines, White typically castles long and pushes the h-pawn. Without your own counterplay on the queenside or in the centre, White's attack lands first.
Practice on Chessiverse
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