C49

Metger Unpin Variation, 4 Knights

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8

Opening moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8. This position is classified under ECO code C49.

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About This Opening

ECO Code

C49

Category Volume C

Position (FEN)

r1bn1rk1/ppp1qppp/3p1n2/1B2p1B1/4P3/2PP1N2/P1P2PPP/R2QR1K1 w - - 3 10

Lichess Stats

Across 3 rapid and classical games on Lichess (1600+ rated), White wins 33%, Black wins 33%, and 33% end in a draw from this position. The most common continuation is d4, played in 67% of games, followed by Nh4.

Observation period: 2026-07.

Small sample: 3 games. These percentages are descriptive and are too uncertain to compare opening strength.

33%

White wins 33% Draws 33% Black wins 33%

3 rapid and classical games on Lichess (1600+)

Top Continuations

Nh4

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