C11

French Defense: Classical Variation, Swiss Variation

Chess diagram: French Defense: Classical Variation, Swiss Variation after 4. Bd3

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

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Statistics from Lichess

370,570 games: White 49.1% / Draw 4.9% / Black 46.0%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
124,436124K
106,296106K
73,58974K
35,67136K
7,5317,531
5,9315,931
4,8174,817
2,8722,872

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 24, 2026

Engine evaluation

−0.14 The position is about equal

Best play: 4... c5 5. Nf3 c4 6. Be2 Bb4 7. Nd2 Nc6 8. e5 Nd7 9. Nf3

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

By rating

The stronger the players, the better this line does for White: White scores 51% under 1400, 54% at 2200 and up (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 90K
1400–1799 142K
1800–2199 241K
2200 and up 41K
Masters, over the board 172

Master games

Rated blitz, rapid and classical Lichess games by rating band, and over-the-board games of players rated 2200+ from the Lichess masters database, updated Sep 27, 2026

Overview

French Defense: Classical Variation, Swiss Variation (ECO C11, Open Games) is a variation of the French Defense: Classical Variation, reached after 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bd3 (4 moves).

In 370,570 rated Lichess games between players rated 1600 to 2500, White won 49.1%, Black 46.0% and 4.9% were drawn. Black's most played move here is 4…c5, in 34% of those games.

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How to play against the French Defense: Classical Variation, Swiss Variation

The most played answer, 4…c5, also scores best for Black: 52.4%, with Black winning 49.9% and White 45.0% of 124K games. Of the main answers, 4…dxe4 scores lowest: 45.3%. Stockfish's first choice is also 4…c5.

Main answers: those played in at least 5% of these games. Score: Black's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Popularity by year

The French Defense: Classical Variation, Swiss Variation peaked in 2018 at 0.019% of Lichess games and has slipped since: 0.015% in 2025.

Numbers by year
YearShare of gamesGames
20160.014%5,026
20170.018%9,644
20180.019%14,572
20190.017%20,602
20200.015%44,311
20210.014%53,201
20220.013%49,042
20230.013%49,622
20240.014%49,915
20250.015%51,582
2026 (Jan–Apr)0.015%16,788

Share of rated Lichess games between players rated 1600 to 2500 (blitz, rapid and classical) that reach this position, by year; 2026: January to April. Which openings are rising and falling

Cite this page

Caissa Codex. “French Defense: Classical Variation, Swiss Variation (C11)”. Lichess data as of 24 Oct 2026. https://chesscodex.org/openings/french-defense-classical-variation-swiss-variation