D00

London: Dual Daggers

1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. c4 e6 5. Qb3 b6 6. Nc3 Be7 7. cxd5 exd5 8. Nb5 Na6 9. Qa4

Opening moves: 1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. c4 e6 5. Qb3 b6 6. Nc3 Be7 7. cxd5 exd5 8. Nb5 Na6 9. Qa4. This position is classified under ECO code D00.

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About This Opening

ECO Code

D00

Category Volume D

Opening Family

London System

Position (FEN)

r2qk2r/p1p1bppp/np3n2/1N1p1b2/Q2P1B2/4P3/PP3PPP/R3KBNR b KQkq - 3 9

Lichess Stats

Across 2 rapid and classical games on Lichess (1600+ rated), White wins 50%, Black wins 50%, and 0% end in a draw from this position. The most common continuation is Bb4+, played in 50% of games, followed by c6.

Observation period: 2026-07.

Small sample: 2 games. These percentages are descriptive and are too uncertain to compare opening strength.

50%

White wins 50% Draws 0% Black wins 50%

2 rapid and classical games on Lichess (1600+)

Top Continuations

Bb4+

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