It seems like Le is all about the d5 square.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. g2g3 This positional line is a rare occurrence at the top level. 6... e7e5  7. d4b3  7... f8e7 