1. e2e4  1... e7e6  2. d2d4  2... d7d5  3. e4e5  3... c7c5  4. c2c3  4... b8c6  5. g1f3  5... c8d7  6. f1e2  6... f7f6 This is one of the sharpest variations of the French advance, leading to positions with many tactical complications.