Sicilian Defense: Richter-Rauzer Variation, Classical Variation (9. f4 e5)
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 e5
The Sicilian Defense: Richter-Rauzer Variation, Classical Variation is a chess opening classified as ECO B64, reached after 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 e5. It is a line of the Sicilian Defense. White is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 1 times by this move order. White won 100%, 0% were drawn and Black won 0%. The most popular continuation is 10. Nf5 (100% of games).
Engine evaluation: +1.22 (Stockfish, depth 26; best line 10. Nf5 Bxf5 11. exf5 Qa5 12. Bc4 Rfd8)
- ECO
- B64
- Moves
- 18 plies
- FEN
r1bq1rk1/pp2bppp/2np1n2/4p1B1/3NPP2/2N5/PPPQ2PP/2KR1B1R w - - 0 10- PGN
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 e5
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 2000+ | 1 | |
| All | 1 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 10. Nf5 | 1 (100%) |
Master games
3 over-the-board games are classified under this line (White 67%, draw 33%, Black 0%). The strongest:
- LCZero 0.31-dag-f7fb268-BT4-61 (3652) – Stockfish dev-20241208-cf10644 (3683) 1/2-1/2 · TCEC 27 Superfinal 2024 · 2024-12-30
- Stockfish dev-20241208-cf10644 (3683) – LCZero 0.31-dag-f7fb268-BT4-61 (3652) 1-0 · TCEC 27 Superfinal 2024 · 2024-12-30
- IM Ioannis Georgiadis (2481) – GM Miralles, G. (2441) 1-0 · TCh-SUI 2015 · 2015-10-10
Highest-rated Lichess games
- wakedog (2314) – Tim1991 (2392) 1-0 · 2026-09-06 · 180 + 0s
Comes from
Sicilian Defense: Open (4. Nxd4 Nf6) 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6
More Sicilian Defense lines (all)
- Sicilian Defense (1. e4 c5) B20
- Sicilian Defense: Amazon Attack B20
- Sicilian Defense: Big Clamp Formation B20
- Sicilian Defense: Bowdler Attack B20
- Sicilian Defense: Brick Variation B20
- Sicilian Defense: Czerniak Attack B20
- Sicilian Defense: Czerniak Attack, Queen Fianchetto Variation B20
- Sicilian Defense: Euwe Attack, Prins Gambit B20
- Sicilian Defense: Gloria Variation B20
- Sicilian Defense: Grob Variation B20
- Sicilian Defense: Keres Variation B20
- Sicilian Defense: King David's Opening B20
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.