1.e4 c6 2.Bc4
Caro Kann Opening with hill billy attack involves the opening of the bishop to a comfortable position usually played at top level chess and in a effective way sacrificing a pawn.Below is the game which describes such a sacrifice in the opening.
d5 3.Bb3 dxe4 4.Qh5 e6 5.Nc3 Nf6 6.Qh4 Nbd7 7.f3 Nc5 8.fxe4 Nfxe4 9.Qxd8+ Kxd8 10.Nxe4 Nxe4 11.d4 Bb4+ 12.c3 Bd6 13.Nf3 f5 14.Be3 Kc7 15.0-0-0 Bd7 16.Rhe1 Rhe8 17.Bc2 Nf6 18.Ne5 Rf8 19.g3 Rad8 20.Bb3 Bc8 21.Nc4 Nd5 22.Nxd6 Nxe3 23.Nb5+
This allows black to be a pawn up but Carlsen is banking on activity at the centre over the lost pawn.
cxb5 24.Rxe3 f4
Giving away the pawn present at the centre.
25.gxf4 Rxf4 26.Bxe6 Re8 27.Rde1 Bxe6 28.Rxe6 Rxe6 29.Rxe6 Rf1+ 30.Kd2 Rf2+ 31.Re2 Rxe2+ 32.Kxe2 Kd6 33.Kd3 Kd5 34.b3 b6 35.a4 bxa4 36.bxa4 a6 37.c4+ Ke6 38.Ke4 g6
An equalized position but the move g6 turns the tides in white’s favour.
39.d5+ Kd6 40.Kd4 h6 41.Ke4 Kd7 42.Ke5 Ke7 43.h3 h5 44.h4
And white has a passer and wins the game.