So comes with a novelty right away! His idea is typical:  the knight wants to get to g6 before the h-pawn advances.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. d2d3  4... f8c5  5. c1g5 A relatively rare move.