1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6
An opening favoured by some of the most dynamic players in the history of chess - Garry Kasparov, Bobby Fischer, Hikaru Nakamura and many more. Black plays the simple moves Nf6-g6-Bg7 and 0-0, then the play becomes sharp as White has built a huge centre and Black tries to smash it down.