An  interesting pawn sacrifice.
1. e2e4  1... c7c5  2. a2a3 When qualified, why not try something original? This line  was heavily analyzed and popularized by the Russian GM Alexei Bezgodov,  who even wrote a book about it. 2... g7g6  3. f1c4  3... f8g7  4. h2h4  4... e7e6  5. b1c3  5... g8e7  6. h4h5 Already a novelty! 6... d7d5 A classical approach by a great classical player. 7. c4a2  7... d5d4  8. c3e2  8... d4d3 It is a good moment to generate central counterplay while the  opponent is pushing his side pawns. 9. c2d3  9... d8d3 