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Bishop's OpeningBoi Variation

C23For WhiteSolidLow theory

1. e4 e5 2. Bc4 Bc5

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

Win rate, White
55.7%53.1%51.8%50.9%
Band 600, n = 34,392Band 1000, n = 69,201Band 1400, n = 49,542Band 1800, n = 52,898
Blunder rate
45.1%53.1%53.3%41.9%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
ABBB
White, band 600White, band 1000White, band 1400White, band 1800
Share of games
0.8%0.5%0.5%0.3%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60055.7%4.7%39.7%45.1%ply 4.034,392A
100053.1%3.6%43.3%53.1%ply 4.069,201B
140051.8%3.7%44.4%53.3%ply 4.049,542B
180050.9%4.2%44.9%41.9%ply 4.052,898B

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 bandA at 600Blunder rate 45.1%, band median 44.6%

At 600, the Bishop's Opening: Boi Variation scores 55.7% for White across 34,392 games. That is comfortably above average at this level. Games in this line leave known theory around move 2 on average, and 45.1% include an early material blunder (51 games at 600).

1000Your bandB at 1000Blunder rate 53.1%, band median 42.9%

At 1000, the Bishop's Opening: Boi Variation scores 53.1% for White across 69,201 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 53.1% include an early material blunder (130 games at 1000).

1400Your bandB at 1400Blunder rate 53.3%, band median 40.0%

At 1400, the Bishop's Opening: Boi Variation scores 51.8% for White across 49,542 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 53.3% include an early material blunder (90 games at 1400).

1800Your bandB at 1800Blunder rate 41.9%, band median 36.4%

At 1800, the Bishop's Opening: Boi Variation scores 50.9% for White across 52,898 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 41.9% include an early material blunder (86 games at 1800).

Questions

Common questions about this page.

At 600, the Bishop's Opening: Boi Variation scores 55.7% for White across 34,392 games. That is comfortably above average at this level. Games in this line leave known theory around move 2 on average, and 45.1% include an early material blunder (51 games at 600).

At 1000, the Bishop's Opening: Boi Variation scores 53.1% for White across 69,201 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 53.1% include an early material blunder (130 games at 1000).

The Bishop's Opening: Boi Variation (C23) is a line for White. The main line runs 1. e4 e5 2. Bc4 Bc5.