1. e2e4  1... c7c5  2. b1c3  2... d7d6  3. g1e2  3... g8f6  4. h2h3  4... e7e5  5. d2d3  5... b8c6  6. g2g4 Andreikin expands on the kingside. His main idea is to remove the  black knight from the defense of the central outpost. 6... f8e7  7. f1g2  7... h7h5 On his turn Vachier-Lagrave challenges White's position before  his opponent consolidates.