Rapport tries a sound positional idea that, however, requires perfect timing as Black will be seriously lagging in development.
1. e2e4  1... e7e6  2. d2d4  2... d7d5  3. e4e5 The Advanced French visits the top-GM level tournaments nowadays mainly thanks to the efforts of Grischuk. 3... c7c5  4. c2c3  4... d8b6  5. g1f3 