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Sicilian Defence: 1.e4 c5 2.Nf3......... 6.Bg5
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Sicilian Defence: 1.e4 c5 2.Nf3......... 6.Bg5
Sicilian Defence: 1.e4 c5 2.Nf3.... 6.Bg5
TL;DR The Richter-Rauzer pins the f6-knight, prepares Qd2 and 0-0-0, and targets Black’s king with a queen-side pawn storm. This is a mainline weapon against the Classical Sicilian for nearly a century.
Summary
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 (ECO B60) is a key line in the Sicilian Defence: Four Knights Variation. Lichess records 1,001,831 games, making it one of the most played variations heavily relied upon in practice.
Performance Statistics
| Elo | Share | White Win% | Black Win% | Draw% |
|---|---|---|---|---|
| 1200 | 0.00% | 51.3% | 45.3% | 3.4% |
| 1800 | 0.03% | 49.7% | 45.8% | 4.5% |
| 2500 | 0.40% | 46.3% | 45.0% | 8.7% |
History and Notable Players
White's Elite Practitioners
- Vlastimil Jansa (75 games)
- Thomas Luther (66 games)
- Oleg Korneev (65 games)
Black’s Defenders
- Zdenko Kozul (207 games)
- Istvan Csom (107 games)
- Vasilios Kotronias (89 games)
Opening Analysis
Difficulty Level
⭐ Expert (heavily theoretical; memorisation and precision required).
Main Themes
The 6.Bg5 advance:
- Pins the Nf6 on the Nd2/f6 line
- Sets up Qd2 and long-castling (0-0-0)
- Paves the way for a queen and pawn storm (e3-e4/Qd2-b5)
Key Seite after 6...!?
Most Populous Reply:
- Black e6 7.Qd2: Sharp variations with quick minor exchanges.
- Black Bd7 (mid-upper levels): Maintains strategic flexibility.
Time Control Insights
| Format | Share | White Win% | Win Percentage Difference from Rapid |
|---|---|---|---|
| Bullet | 0.02% | 48.5% | +2.7pp vs Rapid |
| Blitz | 0.02% | 49.0% | |
| Rapid | 0.01% | 51.2% |
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Note: Time pressure impacts move selection, with lower entropy (higher theory adherence) in rapid play.
Move Selection and Theory Adherence
Top Candidates by Elo Bracket
| Elo | 1st | 1st (blitz/rapid) | 2nd (blitz/rapid) | 3rd (blitz/rapid) |
|---|---|---|---|---|
| 400 | e5 | 25.7 | g6 | 18.4% |
| 1800 | e6 | 44.1 | g6 | 14.8% |
| 2500 | e6 (76.5%) | N/A | Bd7 (14.5%) | N/A |
The entropy collapse at 2500 elo (1.20) proves that at peak levels, this line trims clear theory paths.
Common Pitfalls
❌ Amateur Mistakes:
- ** Lindering Away from Theory**: Giving premature side-splits (e.g., overplaying g6).
- Slow Development: Falling behind piece placement vs insightful attacking play.
- Underestimating White’s Kingside Attack: Many lower-level players ignore ** White’s h4 Long + ...** pressure or later Qd2-b5.
Practice on Chessiverse
Hone your skills: ✅ Bottom to Top: Play Ease mode against AI bots (simulated 400±1000 Elo). ✅ Advanced Mode: Test your theory under pressure in harder opponent AI (2200+ Elo).
Quick Facts
- Parent Syllabus: Sicilian Defence “Four Knights” (Nc3 prepared for Qd2).
- Win Data: White 49.3%, Black 45.5%, Draw 5.3% (Lichess databank).
Frequently Asked Questions
What is the Sicilian Defence: 1.e4 c5 2.Nf3... 6.Bg5?
This refers to 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 (ECO code B60), the 6.Bg5 option in the Richter-Rauzer. Named after chessplayers Rauzer and Richter, it serves as a reliable, theoretical option against the four-knight Sicilian.
Is this line good for beginners?
Yes! It challenges White’s structure and promotes ({}^{\textcolor{red}{\bf piece\ activity}})--so:
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✔ Learn key ideas: e.g. involving the queen first, pinning Nf6-F6, and storm pressures. ❌ Avoid relying on memorisation (expect deviations).
📝 Practice cue: Interact against Chessiverse AI Slav at low elo (800-1200), automatic lines open.
What are the main continuations after 6...?
6.Bg5: Most common replies:
- 7.Qd2 e6! → The “Classical Rep” (mainline with s6-s5g6 transpositions).
- Less formal shell:
- 7.Bb5! (The Richter-Rauzer Blockade tenet).
- 7...a5 (Taking Black’s counterplay aggressively).
How do Sicilian 4KN players interpret this?
White looks to exploit pin and queue control (doubles on rooks/queens), while Black trains endings: -Slow adopter of battle epos -Often get priority with minor pawn pushers/f7 ahead (e.g.: ...a5-a4-for-kingside.)
➡ Historical favourites: Karpov and Rubinstein casting for unbalanced ends.
Further Guidance Resources
TMatching Players?
Take Chessiverse’s free personality test to find curated openings that align with your intellectual style (e.g. positional Confucian Giant vs. thematic Need-for-Speed Hunter).
Conclusion
The Richter-Rauzer mainline (6.Bg5) hovers within Fair −10 ping, with slight premium for rigorous study and adaptation. Play it smoothly to reward bots at Cognitive levels (for combinatorial feedback).
[ shielding-3 ] ⚫ Black’s Remedies by Level
| Elo | Top Move | % Indulgence | Entropic Load | Key Motivation |
|---|---|---|---|---|
| 1800 | @e6 | 65% | 3.3 H | Menacing e3 pad push + pawn storm |
| 2400 | - | Reserved | 2.4 H | Alpha attack offside |
How often to update this?
Lichess suggests natural equilibrium at 1,000 samples +/–. Refresh/b1 hness after 5 years, beyond which decorrelation hits (as entropy drops below 1.5).
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