[Event "corr., 1993"] [White "Andrej Sustarsic"] [Black "Janko Potrata"] [FEN "1r2k3/2pn1p2/p1Qb3p/7q/3PP3/2P1BN1b/PP1N1Pr1/RR5K b - - 0 1"] %Hidden=1 1... Rg1+ 2. Nxg1 Bf1+ 3. Nh3 Qxh3+ 4. Kg1 Qg2#