[Event "St Petersburg, 1875"] [White "Consultants"] [Black "Mikhail Chigorin"] [FEN "7k/pbp3bp/3p4/1p5q/3n2p1/5rB1/PP1NrN1P/1Q1BRRK1 b - - 0 1"] %Hidden=1 1... Rxg3+ 2. hxg3 Qh1+ 3. Nxh1 Rg2#