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Semi-Slav Defense

D43For BlackSolid

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. 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
45.7%44.8%44.7%44.3%
Band 600, n = 530Band 1000, n = 5,644Band 1400, n = 8,872Band 1800, n = 47,463
Blunder rate
pendingpendingpending50.0%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
DDDD
Black, band 600Black, band 1000Black, band 1400Black, band 1800
Share of games
0.0%0.0%0.1%0.2%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60051.1%3.2%45.7%--530D
100051.6%3.6%44.8%--5,644D
140051.3%4.0%44.7%--8,872D
180050.7%5.1%44.3%50.0%ply 8.047,463D

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 bandD at 600

At 600, the Semi-Slav Defense scores 45.7% for Black across 530 games. Most openings score better than this at this level.

1000Your bandD at 1000

At 1000, the Semi-Slav Defense scores 44.8% for Black across 5,644 games. Most openings score better than this at this level.

1400Your bandD at 1400

At 1400, the Semi-Slav Defense scores 44.7% for Black across 8,872 games. Most openings score better than this at this level.

1800Your bandD at 1800Blunder rate 50.0%, band median 36.4%

At 1800, the Semi-Slav Defense scores 44.3% for Black across 47,463 games. Most openings score better than this at this level. Games in this line leave known theory around move 4 on average, and 50.0% include an early material blunder (4 games at 1800).

Questions

Common questions about this page.

At 600, the Semi-Slav Defense scores 45.7% for Black across 530 games. Most openings score better than this at this level.

At 1000, the Semi-Slav Defense scores 44.8% for Black across 5,644 games. Most openings score better than this at this level.

The Semi-Slav Defense (D43) is a line for Black. The main line runs 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6.