1. g1f3  1... d7d5  2. g2g3  2... g8f6  3. f1g2  3... g7g6  4. c2c4  4... d5c4  5. d1a4  5... f6d7  6. h2h4 It's no wonder that capturing on c4 immediately is the most popular move, but there's nothing terribly wrong with the optimistic and thematic h-pawn advance. 6... b8c6 Now Black is threatening Nb6, so the pawn has to be taken. 7. a4c4  7... f8g7 Black doesn't need to worry too much about the pawn advance to h5, but if he wanted he could play h7-h6 immediately, with the idea of responding to h4-h5 with g6-g5.