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Sicilian DefenseClosed

B23For BlackAggressive

1. e4 c5 2. Nc3 e6

A line for Black. Every figure below is computed separately for each rating band, and every one carries its own sample size.

Win rate, Black
51.7%49.9%50.1%47.4%
Band 600, n = 2,251Band 1000, n = 14,727Band 1400, n = 17,092Band 1800, n = 55,037
Blunder rate
66.7%33.3%45.5%42.6%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
CBCC
Black, band 600Black, band 1000Black, band 1400Black, band 1800
Share of games
0.1%0.1%0.2%0.3%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60045.7%2.7%51.7%66.7%ply 4.02,251C
100046.8%3.3%49.9%33.3%ply 4.014,727B
140046.4%3.5%50.1%45.5%ply 4.017,092C
180048.5%4.1%47.4%42.6%ply 4.055,037C

Results by band

What it actually does, band by band.

All four bands are on the page. The one matching your rating is marked. Nothing here is averaged across bands.

600Your bandC at 600Blunder rate 66.7%, band median 44.6%

At 600, the Sicilian Defense: Closed scores 51.7% for Black across 2,251 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 66.7% include an early material blunder (3 games at 600).

1000Your bandB at 1000Blunder rate 33.3%, band median 42.9%

At 1000, the Sicilian Defense: Closed scores 49.9% for Black across 14,727 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 33.3% include an early material blunder (24 games at 1000).

1400Your bandC at 1400Blunder rate 45.5%, band median 40.0%

At 1400, the Sicilian Defense: Closed scores 50.1% for Black across 17,092 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 45.5% include an early material blunder (33 games at 1400).

1800Your bandC at 1800Blunder rate 42.6%, band median 36.4%

At 1800, the Sicilian Defense: Closed scores 47.4% for Black across 55,037 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 42.6% include an early material blunder (101 games at 1800).

Questions

Common questions about this page.

At 600, the Sicilian Defense: Closed scores 51.7% for Black across 2,251 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 66.7% include an early material blunder (3 games at 600).

At 1000, the Sicilian Defense: Closed scores 49.9% for Black across 14,727 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 33.3% include an early material blunder (24 games at 1000).

The Sicilian Defense: Closed (B23) is a line for Black. The main line runs 1. e4 c5 2. Nc3 e6.