C42

Berger Variation, Petroff

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 Bg4 9. c3 f5 10. Nbd2

Opening moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 Bg4 9. c3 f5 10. Nbd2. This position is classified under ECO code C42.

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About This Opening

ECO Code

C42

Category Volume C

Opening Family

Petroff Defense

Position (FEN)

r2qk2r/ppp1b1pp/2n5/3p1p2/3Pn1b1/2PB1N2/PP1N1PPP/R1BQR1K1 b kq - 1 10

Lichess Stats

Across 4 rapid and classical games on Lichess (1600+ rated), White wins 25%, Black wins 25%, and 50% end in a draw from this position. The most common continuation is O-O, played in 100% of games.

Observation period: 2026-07.

Small sample: 4 games. These percentages are descriptive and are too uncertain to compare opening strength.

25%

50%

25%

White wins 25% Draws 50% Black wins 25%

4 rapid and classical games on Lichess (1600+)

Top Continuations

O-O

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