FEN
[Event "Casual rapid game"]
[Site "https://lichess.org/t0OQmX7A"]
[Date "2021.03.23"]
[White "El2010"]
[Black "Konstantin71"]
[Result "1-0"]
[UTCDate "2021.03.23"]
[UTCTime "00:30:36"]
[WhiteElo "1385"]
[BlackElo "1551"]
[Variant "From Position"]
[TimeControl "300+5"]
[ECO "?"]
[Opening "?"]
[Termination "Normal"]
[FEN "8/8/8/8/8/k7/5R2/6RK w - - 0 1"]
[SetUp "1"]
[Annotator "lichess.org"]
1. Rf4 Kb3 2. Rg3+ Kc2 3. Rf2+ Kd1 4. Rg1# { White wins by checkmate. } 1-0