FEN
[Event "Casual rapid game"]
[Site "https://lichess.org/R4vw5mA6"]
[Date "2021.02.14"]
[White "primeideal"]
[Black "Lethgo"]
[Result "1-0"]
[UTCDate "2021.02.14"]
[UTCTime "18:42:01"]
[WhiteElo "1791"]
[BlackElo "1859"]
[Variant "From Position"]
[TimeControl "300+10"]
[ECO "?"]
[Opening "?"]
[Termination "Normal"]
[FEN "8/8/PK6/1R4pk/8/8/8/r7 w - - 0 1"]
[SetUp "1"]
[Annotator "lichess.org"]
1. Ra5 Rb1+ 2. Kc7 Rc1+ 3. Kd7 Rd1+ 4. Ke7 Re1+ 5. Kf7 Rf1+ 6. Kg7 Rc1 7. a7 Rc8 8. a8=Q Rxa8 9. Rxa8 g4 10. Kf6 g3 11. Kf5 Kh4 12. Rh8# { White wins by checkmate. } 1-0