C66

Closed Showalter Variation, Ruy Lopez

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 7. Bxc6

Opening moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 7. Bxc6. This position is classified under ECO code C66.

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About This Opening

ECO Code

C66

Category Volume C

Opening Family

Ruy Lopez

Position (FEN)

r2qk2r/pppbbppp/2Bp1n2/4p3/3PP3/2N2N2/PPP2PPP/R1BQ1RK1 b kq - 0 7

Lichess Stats

Across 20 rapid and classical games on Lichess (1600+ rated), White wins 70%, Black wins 20%, and 10% end in a draw from this position. The most common continuation is Bxc6, played in 75% of games, followed by bxc6.

Observation period: 2026-07.

Small sample: 20 games. These percentages are descriptive and are too uncertain to compare opening strength.

70%

10%

20%

White wins 70% Draws 10% Black wins 20%

20 rapid and classical games on Lichess (1600+)

Top Continuations

Bxc6

bxc6

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