Chess: The Most Brilliant Move Ever!

Levitzky-Marshall, Breslau 1912.
Black to play and win.

Solution



1 ... Qg3!!

So electrifying was its effect on the spectators that
they showered Marshall's board with gold pieces!
1 ... Qg3 threatens 2 ... Qxh2 mate. If 2 hxg3 Ne2
mate, and after 2 fxg3 Ne2+ it's mate next move.
Finally, if 2 Qxg3 Ne2+ 3 Kh1 Nxg3+ 4 Kg1 Nxf1,
and Black is a piece ahead.