[%c_effect c5;square;c5;type;Inaccuracy;persistent;true] A new move, but this makes things worse.
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  11... e8g8  12. b2b3 [%c_effect b3;square;b3;type;Inaccuracy;persistent;true] It's better to prepare the advance b4 to hinder the move c6-c5, as we will see in the game. 12... f8d8  13. f1d1  13... c6c5 This is a dream position for Black after the opening. This is a pawn structure that we often see in the French Defense, with the difference that here the light-squared bishop has already been exchanged.