[Event "Lucena position: Chapter 1"] [Date "2020.04.26"] [Result "*"] [Variant "Standard"] [ECO "?"] [Opening "?"] [StudyName "Lucena position"] [ChapterName "Chapter 1"] [ChapterURL "https://lichess.org/study/Svs3ZGTd/G4fqmooA"] [Annotator "https://lichess.org/@/Mechsuman"] [FEN "2K1k3/2P5/8/8/8/8/r7/3R4 w - - 0 1"] [SetUp "1"] [UTCDate "2020.04.26"] [UTCTime "10:48:15"] [Orientation "white"] 1. Re1+ { [%csl Gc8][%cal Gd1d8,Ge1e8] } 1... Kf7 2. Re4 { [%csl Gb7,Gd7,Gf6] } 2... Kf6 (2... Ra5 3. Kd7 Rd5+ 4. Kc6 Ra5) 3. Kd7 { [%csl Gc8][%cal Gc7c8,Ga2c2] } 3... Rd2+ 4. Kc6 Rc2+ 5. Kd6 Rd2+ 6. Kc5 Rc2+ 7. Rc4 Rxc4+ 8. Kxc4 Ke7 9. c8=Q *