The Sicilian Defence: 1.e4 c5 2.Nf3... 5.Bd3 begins with 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 (ECO B42). Lichess records 868,870 games in this line, which gives us a reliable view of how it actually performs in practice.
History and Notable Players
It arises from the Sicilian Defense: Kan Variation. On the White side, Mladen Palac (48 games), Oleg Korneev (42 games), Thomas Luther (40 games) top the database. Notable Black exponents: Normunds Miezis (121 games), Florin Gheorghiu (91 games), Petar Velikov (75 games).
Performance Across Rating Levels
How well the Sicilian Defence: 1.e4 c5 2.Nf3... 5.Bd3 works depends on what level you're playing at. Among 1200-rated players, it appears in 0.00% of games — 10,437 of them on record — with White winning 45.9% and Black 51.1%. Move up to 1800 Elo and the share shifts to 0.02%, with White winning 45.8% versus Black's 50%. At 2500, 0.20% of games go into this opening; draws sit at 7.7% — the line is well-mapped at this level.
Time Control Patterns
The Sicilian Defence: 1.e4 c5 2.Nf3... 5.Bd3 skews toward blitz chess. In bullet, it appears in 0.01% of games (330,617); White wins 45.9%. Blitz shows 0.02% adoption across 756,158 games, White scoring 47.1%. In rapid, the share rises to 0.01% — 112,712 games, White 47.1%.
Move Diversity and Theory Depth
What players actually play after the opening moves depends heavily on rating. At 1200 Elo, the top reply is Qc7, played 28.5% of the time. There are 6 other moves seeing meaningful share, and 62.6% of games stick to established theory. Entropy: 2.98. By 2500, Qc7 dominates at 29% of replies; only 5 viable alternatives remain and 74.9% of moves are theory. Entropy drops to 2.63.
Historical Trends
Year-over-year data tells you whether this opening is a contemporary fixture or a fading one. Adoption peaked in 2015 at 0.03% (6,054 games). By 2025 it sits at 0.02% — a 8% shift overall, leaving the line flat.
Common Mistakes
- Drifting away from main theory — At 400 Elo, theory adherence sits at 59.1% — versus 72.7% at 2000. The most popular deviation is Bc5 (played 15.9% of the time at 400, much less so up top). It looks fine but quietly hands the better-prepared side an edge.
- Neglecting development — Extra pawn moves in the opening are tempting, especially when you "know the moves". Developing a piece each turn is the simple correction.
- 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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