2 / 2
  1. 1.

Click a move, or focus the board and use the arrow keys.

Benoni DefenseOld Benoni

A43For BlackAggressive

1. d4 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
45.3%48.0%48.4%48.2%
Band 600, n = 11,539Band 1000, n = 71,554Band 1400, n = 75,568Band 1800, n = 206,593
Blunder rate
50.0%44.7%37.1%29.4%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
CCBB
Black, band 600Black, band 1000Black, band 1400Black, band 1800
Share of games
0.3%0.5%0.7%1.0%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60050.6%4.1%45.3%50.0%ply 2.011,539C
100048.9%3.2%48.0%44.7%ply 2.071,554C
140048.2%3.4%48.4%37.1%ply 2.075,568B
180047.5%4.2%48.2%29.4%ply 2.0206,593B

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 50.0%, band median 44.6%

At 600, the Benoni Defense: Old Benoni scores 45.3% for Black across 11,539 games. That is below average at this level. Games in this line leave known theory around move 1 on average, and 50.0% include an early material blunder (6 games at 600).

1000Your bandC at 1000Blunder rate 44.7%, band median 42.9%

At 1000, the Benoni Defense: Old Benoni scores 48.0% for Black across 71,554 games. That is below average at this level. Games in this line leave known theory around move 1 on average, and 44.7% include an early material blunder (85 games at 1000).

1400Your bandB at 1400Blunder rate 37.1%, band median 40.0%

At 1400, the Benoni Defense: Old Benoni scores 48.4% for Black across 75,568 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 37.1% include an early material blunder (97 games at 1400).

1800Your bandB at 1800Blunder rate 29.4%, band median 36.4%

At 1800, the Benoni Defense: Old Benoni scores 48.2% for Black across 206,593 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 29.4% include an early material blunder (194 games at 1800).

Variations

Where the line goes next.

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

  • CCCCA43

    Benoni Defense: Benoni Gambit Accepted

    1. d4 c5 2. dxc5

    0.1% of games at 600, n = 4,6350.2% of games at 1000, n = 23,3900.2% of games at 1400, n = 20,1790.2% of games at 1800, n = 36,716

  • CCCBA43

    Benoni Defense: Old Benoni

    1. d4 c5 2. d5

    0.0% of games at 600, n = 1,1430.1% of games at 1000, n = 13,7080.2% of games at 1400, n = 20,7970.4% of games at 1800, n = 76,217

Questions

Common questions about this page.

At 600, the Benoni Defense: Old Benoni scores 45.3% for Black across 11,539 games. That is below average at this level. Games in this line leave known theory around move 1 on average, and 50.0% include an early material blunder (6 games at 600).

At 1000, the Benoni Defense: Old Benoni scores 48.0% for Black across 71,554 games. That is below average at this level. Games in this line leave known theory around move 1 on average, and 44.7% include an early material blunder (85 games at 1000).

The Benoni Defense: Old Benoni (A43) is a line for Black. The main line runs 1. d4 c5.