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Sicilian Defense

B20For BlackAggressive

1. e4 c5

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
48.8%49.1%48.8%47.6%
Band 600, n = 130,324Band 1000, n = 850,797Band 1400, n = 937,107Band 1800, n = 2,610,015
Blunder rate
52.9%41.1%35.4%25.6%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
BBBA
Black, band 600Black, band 1000Black, band 1400Black, band 1800
Share of games
3.1%6.0%8.7%12.5%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60047.4%3.7%48.8%52.9%ply 2.0130,324B
100047.5%3.3%49.1%41.1%ply 2.0850,797B
140047.7%3.6%48.8%35.4%ply 2.0937,107B
180048.0%4.4%47.6%25.6%ply 2.02,610,015A

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 bandB at 600Blunder rate 52.9%, band median 44.6%

At 600, the Sicilian Defense scores 48.8% for Black across 130,324 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 52.9% include an early material blunder (51 games at 600).

1000Your bandB at 1000Blunder rate 41.1%, band median 42.9%

At 1000, the Sicilian Defense scores 49.1% for Black across 850,797 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 41.1% include an early material blunder (202 games at 1000).

1400Your bandB at 1400Blunder rate 35.4%, band median 40.0%

At 1400, the Sicilian Defense scores 48.8% for Black across 937,107 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 35.4% include an early material blunder (164 games at 1400).

1800Your bandA at 1800Blunder rate 25.6%, band median 36.4%

At 1800, the Sicilian Defense scores 47.6% for Black across 2,610,015 games. That is comfortably above average at this level. Games in this line leave known theory around move 1 on average, and 25.6% include an early material blunder (363 games at 1800).

Variations

Where the line goes next.

The lines that continue the Sicilian Defense, most played first at your band. Switch the band in the header and both the figures and the order follow.

  • BBBBB27

    Sicilian Defense

    1. e4 c5 2. Nf3

    1.0% of games at 600, n = 44,4732.7% of games at 1000, n = 385,3694.3% of games at 1400, n = 466,0866.6% of games at 1800, n = 1,381,673

  • CCBBB20

    Sicilian Defense: Bowdler Attack

    1. e4 c5 2. Bc4

    0.6% of games at 600, n = 23,8881.0% of games at 1000, n = 146,6401.3% of games at 1400, n = 138,0411.1% of games at 1800, n = 231,195

  • BBBAB21

    Sicilian Defense: Smith-Morra Gambit

    1. e4 c5 2. d4

    0.4% of games at 600, n = 15,4850.6% of games at 1000, n = 90,6360.7% of games at 1400, n = 78,3121.0% of games at 1800, n = 209,515

  • DCBBB23

    Sicilian Defense: Closed

    1. e4 c5 2. Nc3

    0.3% of games at 600, n = 14,1950.5% of games at 1000, n = 69,4370.7% of games at 1400, n = 72,0941.1% of games at 1800, n = 233,562

  • BBBBB22

    Sicilian Defense: Alapin Variation

    1. e4 c5 2. c3

    0.1% of games at 600, n = 3,1920.3% of games at 1000, n = 37,4650.5% of games at 1400, n = 57,2310.9% of games at 1800, n = 191,864

  • DBCBB21

    Sicilian Defense: McDonnell Attack

    1. e4 c5 2. f4

    0.1% of games at 600, n = 2,2920.2% of games at 1000, n = 24,4820.4% of games at 1400, n = 44,6180.8% of games at 1800, n = 169,259

  • DCCCB20

    Sicilian Defense: Staunton-Cochrane Variation

    1. e4 c5 2. c4

    0.1% of games at 600, n = 4,2930.1% of games at 1000, n = 17,9280.1% of games at 1400, n = 13,2780.2% of games at 1800, n = 32,965

Questions

Common questions about this page.

At 600, the Sicilian Defense scores 48.8% for Black across 130,324 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 52.9% include an early material blunder (51 games at 600).

At 1000, the Sicilian Defense scores 49.1% for Black across 850,797 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 41.1% include an early material blunder (202 games at 1000).

The Sicilian Defense (B20) is a line for Black. The main line runs 1. e4 c5.