Opening Basics #25: Scotch game - 4 ... Qh4 and 4 ... Nf6

Now we get to one of the two main lines of the Scotch game, the move 4 ... Nf6 (after 4. Nxd4). But first I have to take a look at a fascinating offbeat line, the early queen move 4 ... Qh4. This move virtually wins a pawn by force, but is it any good?