FEN
[Event "Casual correspondence game"]
[Site "https://lichess.org/9rZXfv4M"]
[Date "2021.01.05"]
[White "ameggamer"]
[Black "William2020"]
[Result "1-0"]
[UTCDate "2021.01.05"]
[UTCTime "22:21:39"]
[WhiteElo "1808"]
[BlackElo "1500"]
[Variant "From Position"]
[TimeControl "-"]
[ECO "?"]
[Opening "?"]
[Termination "Normal"]
[FEN "8/6P1/3k4/p7/8/8/3KR3/8 w - - 0 1"]
[SetUp "1"]
[Annotator "lichess.org"]
1. g8=R a4 2. Rg3 Kc5 3. Re1 Kd5 4. Ra1 Ke4 5. Rh3 Kf4 6. Rxa4+ Ke5 7. Rh5+ Kf6 8. Rb5 Kg6 9. Ra6+ Kf7 10. Rb7+ Kf8 11. Ra8# { White wins by checkmate. } 1-0