Black to play and win
HE Price v M Powiecki 1972
Examine all biffs quickly leads to 1…Rf3+ when carnage ensues.
If white doesn't take on f3, playing say 2 Ke2, then 2…Qe4 mate; or 2 Kg1, 2….Rd1 mate. So 2 gf is forced, when 2…Qh3+ 3 Ke2 Qg2+ 4 Qf2 Rd2+ is 0-1