[Event "St Petersburg, 1876"] [White "Mikhail Chigorin"] [Black "Ilia Shumov"] [FEN "r2r4/p1p2p1p/n5k1/1p5N/2p2R2/5N2/P1K3PP/5R2 w - - 1 0"] %Hidden=1 1. Rf6+ Kxh5 2. g4+ Kxg4 3. Rg1+ Kh5 4. Rg5#