French Defense: Tarrasch Variation, Guimard Defense

An entry in the Encyclopedia of Chess Openings (ECO C03), reached after 6 half-moves: 1. e4 e6 2. d4 d5 3. Nd2 Nc6.

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4.c3 1 line
- C03 Thunderbunny Variation
4.Ngf3 1 line
- C04 Main Line

About this opening

French Defense: Tarrasch Variation, Guimard Defense is an opening in the Encyclopedia of Chess Openings, classified under code C03. 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 Nc6.

It belongs to the French Defense family. Within that family this is a level-2 branch (the Tarrasch Variation → Guimard Defense line). The immediate parent line is French Defense: Tarrasch Variation, transitioned via 3…Nc6.

The opening sequence in prose form: 1.e4 e6, 2.d4 d5, 3.Nd2 Nc6. From this position 2 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.