It's necessary to improve White's game in the next moves, since Black will manage to solve all the opening problems.
1. e2e4  1... c7c6  2. d2d4  2... d7d5  3. e4e5  3... c8f5  4. h2h4 This is a very popular system against the Caro-Kann these days. 4... h7h5 This is the best answer, stopping the advance of the white pawns. 5. f1d3  5... f5d3  6. d1d3  6... d8a5  7. b1d2  7... e7e6  8. g1f3  8... g8h6  9. e1g1 