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  9... h6f5 It's necessary to improve White's game in the next moves, since Black will manage to solve all the opening problems. 10. c2c4 [%c_effect c4;square;c4;type;Inaccuracy;persistent;true] 10... f8e7 That's the problem: now White has to waste time defending the h4-pawn. 11. g2g3 