Mazukevich's Madness: A repertoire for Black against the Four Knights

In Mazukevich's Madness, Black stuns White with a piece sacrifice on move 5, completely changing the direction of the game of this otherwise solid and rather predictable opening.FIDE Master, FIDE Trainer, and opening specialist Carsten Hansen carefully analyzes all options for White after 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Nxe4!, showing that Black not only is doing fine, but can often s...