[Event "Escalier de LASKER"] [Site "Cours Alain Anim Michel"] [Date "????.??.??"] [Result "1-0"] [Variant "From Position"] [ECO "?"] [Opening "?"] [Annotator "https://lichess.org/@/michel_PR"] [FEN "8/K1P2R2/8/k7/8/8/2r2p2/8 w - - 0 1"] [SetUp "1"] [Source "https://lichess.org/study/PN400wEt/EgdXjUH3"] [Orientation "white"] 1. Rf5+! Ka4! { Oblige! si 1…; Rb4?? - 2 Rb7! suivi de 3 c8D! gagne } 2. Kb7! Rb2+ 3. Ka6 Rc2! 4. Rf4+! Ka3 { si 4…; Rb2? - 5 Rb7! suivi de 6 c8D! gagne } 5. Kb6! Rb2+ { si 5…; Rb2? - 6 Rb7! suivi de 7 c8D! gagne si 5…; Ra2? - 6 Txf2; Txf2 - 8 c8D! gagne } 6. Ka5 Rc2 7. Rf3+! Kb2 8. Rxf2!! Rxf2 9. c8=Q { 1-0 Black resigns. } 9... Kb3 1-0