About this opening
French Defense: Tarrasch Variation, Open System is an opening in the Encyclopedia of Chess Openings,
classified under code C07. ECO group C (C00–C99)
covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached
after 6 half-moves from the
starting position, with the move sequence 1. e4 e6 2. d4 d5 3. Nd2 c5.
It belongs to the French Defense family.
Within that family this is a level-2 branch (the Tarrasch Variation → Open System line). The immediate parent line is French Defense: Tarrasch Variation, transitioned via 3…c5.
The opening sequence in prose form: 1.e4 e6, 2.d4 d5, 3.Nd2 c5. From this position 3 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.
Use the interactive board above to walk through the moves position-by-position. Click any move in the navigation to step backwards, or use the keyboard arrow keys. The list of recorded continuations sits directly below the board. For statistical data — how often master-level players have reached this position, White's win-rate, draw frequency, Black's score — see the panel in the right column.
Caissly's coverage of C07 extends through every named sub-variation in this line and across all four locales (English, Spanish, Portuguese, Russian). Where editorial commentary exists for a specific variation it appears as the page body; otherwise the page presents the structural data, board, and statistics as shown here.