10 / 10
  1. 1.
  2. 2.
  3. 3.
  4. 4.
  5. 5.

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

Italian GameTwo Knights Defense, Polerio Defense

C58For BlackAggressive

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5

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
53.2%51.2%50.8%48.9%
Band 600, n = 2,979Band 1000, n = 25,149Band 1400, n = 19,437Band 1800, n = 32,320
Blunder rate
45.5%40.5%25.9%29.2%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
BBBB
Black, band 600Black, band 1000Black, band 1400Black, band 1800
Share of games
0.1%0.2%0.2%0.2%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60043.6%3.2%53.2%45.5%ply 10.02,979B
100046.0%2.8%51.2%40.5%ply 10.025,149B
140046.2%3.1%50.8%25.9%ply 10.019,437B
180047.5%3.6%48.9%29.2%ply 10.032,320B

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 45.5%, band median 44.6%

At 600, the Italian Game: Two Knights Defense, Polerio Defense scores 53.2% for Black across 2,979 games. That is close to the average at this level. Games in this line leave known theory around move 5 on average, and 45.5% include an early material blunder (11 games at 600).

1000Your bandB at 1000Blunder rate 40.5%, band median 42.9%

At 1000, the Italian Game: Two Knights Defense, Polerio Defense scores 51.2% for Black across 25,149 games. That is close to the average at this level. Games in this line leave known theory around move 5 on average, and 40.5% include an early material blunder (37 games at 1000).

1400Your bandB at 1400Blunder rate 25.9%, band median 40.0%

At 1400, the Italian Game: Two Knights Defense, Polerio Defense scores 50.8% for Black across 19,437 games. That is close to the average at this level. Games in this line leave known theory around move 5 on average, and 25.9% include an early material blunder (27 games at 1400).

1800Your bandB at 1800Blunder rate 29.2%, band median 36.4%

At 1800, the Italian Game: Two Knights Defense, Polerio Defense scores 48.9% for Black across 32,320 games. That is close to the average at this level. Games in this line leave known theory around move 5 on average, and 29.2% include an early material blunder (48 games at 1800).

Questions

Common questions about this page.

At 600, the Italian Game: Two Knights Defense, Polerio Defense scores 53.2% for Black across 2,979 games. That is close to the average at this level. Games in this line leave known theory around move 5 on average, and 45.5% include an early material blunder (11 games at 600).

At 1000, the Italian Game: Two Knights Defense, Polerio Defense scores 51.2% for Black across 25,149 games. That is close to the average at this level. Games in this line leave known theory around move 5 on average, and 40.5% include an early material blunder (37 games at 1000).

The Italian Game: Two Knights Defense, Polerio Defense (C58) is a line for Black. The main line runs 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5.