French Defense · C09

Tarrasch Variation, Open System, Main Line, after 6. Bb5

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. c3

An early pawn trade leaves the c-file as Black's avenue and the d-file as White's - both sides get real winning chances down their own file. Nd2 sidesteps the Winawer pin and keeps the pawn front intact: White accepts a modest centre in exchange for a sound, theory-light edge.

The first 4 moves, explained

• 1. e4 Stakes a claim in the centre, controlling d5, and frees the bishop and queen.
• 1... e6 Supports the centre, adding control of d5. Theory calls this the French Defense.
• 2. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen.
• 2... d5 Stakes a claim in the centre, controlling e4, and frees the bishop and queen.

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